./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/bist_cell.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/systemc/bist_cell.cil.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 de455e90ef2ae1a82fb7a87bbcdb07831c7ef68e47976e1b2868a3e9de47a0a2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 16:06:22,323 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 16:06:22,389 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 16:06:22,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 16:06:22,394 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 16:06:22,417 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 16:06:22,417 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 16:06:22,418 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 16:06:22,419 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 16:06:22,419 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 16:06:22,419 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 16:06:22,419 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 16:06:22,419 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 16:06:22,420 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 16:06:22,420 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 16:06:22,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 16:06:22,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 16:06:22,420 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 16:06:22,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 16:06:22,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 16:06:22,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 16:06:22,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 16:06:22,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 16:06:22,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 16:06:22,421 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 16:06:22,421 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 16:06:22,421 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 16:06:22,421 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 16:06:22,421 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:06:22,422 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 16:06:22,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 16:06:22,422 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 -> de455e90ef2ae1a82fb7a87bbcdb07831c7ef68e47976e1b2868a3e9de47a0a2 [2025-02-05 16:06:22,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 16:06:22,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 16:06:22,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 16:06:22,746 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 16:06:22,747 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 16:06:22,748 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/bist_cell.cil.c [2025-02-05 16:06:24,095 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/db34e3ff0/ad88ed63bbe744eb9bfed16e42dfedc6/FLAGf1e4a06e3 [2025-02-05 16:06:24,369 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 16:06:24,369 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/systemc/bist_cell.cil.c [2025-02-05 16:06:24,391 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/db34e3ff0/ad88ed63bbe744eb9bfed16e42dfedc6/FLAGf1e4a06e3 [2025-02-05 16:06:24,411 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/db34e3ff0/ad88ed63bbe744eb9bfed16e42dfedc6 [2025-02-05 16:06:24,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 16:06:24,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 16:06:24,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 16:06:24,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 16:06:24,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 16:06:24,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,423 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20526bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24, skipping insertion in model container [2025-02-05 16:06:24,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,441 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 16:06:24,543 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/systemc/bist_cell.cil.c[639,652] [2025-02-05 16:06:24,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:06:24,616 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 16:06:24,624 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/systemc/bist_cell.cil.c[639,652] [2025-02-05 16:06:24,653 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:06:24,672 INFO L204 MainTranslator]: Completed translation [2025-02-05 16:06:24,673 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24 WrapperNode [2025-02-05 16:06:24,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 16:06:24,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 16:06:24,675 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 16:06:24,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 16:06:24,680 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,687 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,711 INFO L138 Inliner]: procedures = 30, calls = 30, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 223 [2025-02-05 16:06:24,715 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 16:06:24,716 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 16:06:24,716 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 16:06:24,716 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 16:06:24,724 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,727 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,746 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-05 16:06:24,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,750 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,752 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,757 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,758 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 16:06:24,763 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 16:06:24,763 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 16:06:24,763 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 16:06:24,764 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (1/1) ... [2025-02-05 16:06:24,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:06:24,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:24,797 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 16:06:24,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 16:06:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 16:06:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2025-02-05 16:06:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2025-02-05 16:06:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2025-02-05 16:06:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2025-02-05 16:06:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2025-02-05 16:06:24,835 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2025-02-05 16:06:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2025-02-05 16:06:24,835 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2025-02-05 16:06:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 16:06:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2025-02-05 16:06:24,835 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2025-02-05 16:06:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 16:06:24,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 16:06:24,904 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 16:06:24,906 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 16:06:25,210 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2025-02-05 16:06:25,210 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 16:06:25,222 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 16:06:25,222 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 16:06:25,225 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:06:25 BoogieIcfgContainer [2025-02-05 16:06:25,225 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 16:06:25,227 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 16:06:25,227 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 16:06:25,231 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 16:06:25,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 04:06:24" (1/3) ... [2025-02-05 16:06:25,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513270fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:06:25, skipping insertion in model container [2025-02-05 16:06:25,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:06:24" (2/3) ... [2025-02-05 16:06:25,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@513270fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:06:25, skipping insertion in model container [2025-02-05 16:06:25,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:06:25" (3/3) ... [2025-02-05 16:06:25,234 INFO L128 eAbstractionObserver]: Analyzing ICFG bist_cell.cil.c [2025-02-05 16:06:25,247 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 16:06:25,248 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bist_cell.cil.c that has 6 procedures, 103 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-05 16:06:25,309 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 16:06:25,321 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;@1cc2bdfa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 16:06:25,321 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 16:06:25,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 86 states have (on average 1.5348837209302326) internal successors, (132), 88 states have internal predecessors, (132), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-05 16:06:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-05 16:06:25,333 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:25,334 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:25,334 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:25,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:25,337 INFO L85 PathProgramCache]: Analyzing trace with hash 136620446, now seen corresponding path program 1 times [2025-02-05 16:06:25,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:25,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326339016] [2025-02-05 16:06:25,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:25,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:25,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-05 16:06:25,446 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 16:06:25,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:25,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:06:25,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:25,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326339016] [2025-02-05 16:06:25,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326339016] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:25,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:06:25,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:06:25,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520725140] [2025-02-05 16:06:25,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:25,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:25,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:25,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:25,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:06:25,705 INFO L87 Difference]: Start difference. First operand has 103 states, 86 states have (on average 1.5348837209302326) internal successors, (132), 88 states have internal predecessors, (132), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 16:06:25,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:25,913 INFO L93 Difference]: Finished difference Result 220 states and 327 transitions. [2025-02-05 16:06:25,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:06:25,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2025-02-05 16:06:25,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:25,924 INFO L225 Difference]: With dead ends: 220 [2025-02-05 16:06:25,925 INFO L226 Difference]: Without dead ends: 117 [2025-02-05 16:06:25,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:06:25,934 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 95 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:25,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 412 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:06:25,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-02-05 16:06:25,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2025-02-05 16:06:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 100 states have (on average 1.5) internal successors, (150), 101 states have internal predecessors, (150), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2025-02-05 16:06:25,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 171 transitions. [2025-02-05 16:06:25,979 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 171 transitions. Word has length 42 [2025-02-05 16:06:25,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:25,979 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 171 transitions. [2025-02-05 16:06:25,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-05 16:06:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 171 transitions. [2025-02-05 16:06:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-05 16:06:25,983 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:25,983 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:25,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 16:06:25,983 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:25,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:25,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1249242541, now seen corresponding path program 1 times [2025-02-05 16:06:25,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:25,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943442053] [2025-02-05 16:06:25,984 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:25,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:26,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:26,021 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:26,022 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:26,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:26,214 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:26,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:26,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943442053] [2025-02-05 16:06:26,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943442053] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:26,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013768714] [2025-02-05 16:06:26,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:26,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:26,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:26,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:26,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 16:06:26,299 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:26,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:26,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:26,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:26,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 16:06:26,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:26,448 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:26,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013768714] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:26,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:26,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:06:26,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778398680] [2025-02-05 16:06:26,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:26,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:06:26,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:26,450 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:06:26,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:26,451 INFO L87 Difference]: Start difference. First operand 117 states and 171 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:26,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:26,469 INFO L93 Difference]: Finished difference Result 227 states and 333 transitions. [2025-02-05 16:06:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:06:26,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2025-02-05 16:06:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:26,470 INFO L225 Difference]: With dead ends: 227 [2025-02-05 16:06:26,471 INFO L226 Difference]: Without dead ends: 117 [2025-02-05 16:06:26,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:26,472 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 128 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:26,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 142 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:06:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-02-05 16:06:26,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2025-02-05 16:06:26,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 100 states have (on average 1.49) internal successors, (149), 101 states have internal predecessors, (149), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2025-02-05 16:06:26,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 170 transitions. [2025-02-05 16:06:26,480 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 170 transitions. Word has length 101 [2025-02-05 16:06:26,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:26,480 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 170 transitions. [2025-02-05 16:06:26,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:26,481 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 170 transitions. [2025-02-05 16:06:26,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-05 16:06:26,483 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:26,484 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:26,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-05 16:06:26,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:26,685 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:26,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:26,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1877528500, now seen corresponding path program 1 times [2025-02-05 16:06:26,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:26,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050060834] [2025-02-05 16:06:26,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:26,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:26,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:26,705 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:26,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:26,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:26,829 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:26,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050060834] [2025-02-05 16:06:26,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050060834] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:26,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42891863] [2025-02-05 16:06:26,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:26,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:26,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:26,833 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:26,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 16:06:26,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:26,939 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:26,939 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:26,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:26,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 16:06:26,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:27,030 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 16:06:27,030 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:27,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42891863] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:27,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:27,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:06:27,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490739497] [2025-02-05 16:06:27,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:27,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:27,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:27,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:27,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:27,032 INFO L87 Difference]: Start difference. First operand 117 states and 170 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:27,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:27,297 INFO L93 Difference]: Finished difference Result 347 states and 513 transitions. [2025-02-05 16:06:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:06:27,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2025-02-05 16:06:27,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:27,300 INFO L225 Difference]: With dead ends: 347 [2025-02-05 16:06:27,301 INFO L226 Difference]: Without dead ends: 239 [2025-02-05 16:06:27,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-05 16:06:27,302 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 237 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:27,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 381 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:06:27,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2025-02-05 16:06:27,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 229. [2025-02-05 16:06:27,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 196 states have (on average 1.489795918367347) internal successors, (292), 199 states have internal predecessors, (292), 19 states have call successors, (19), 11 states have call predecessors, (19), 13 states have return successors, (27), 20 states have call predecessors, (27), 19 states have call successors, (27) [2025-02-05 16:06:27,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 338 transitions. [2025-02-05 16:06:27,340 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 338 transitions. Word has length 101 [2025-02-05 16:06:27,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:27,340 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 338 transitions. [2025-02-05 16:06:27,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:27,343 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 338 transitions. [2025-02-05 16:06:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-05 16:06:27,349 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:27,349 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:27,355 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 [2025-02-05 16:06:27,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:27,550 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:27,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:27,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1937687284, now seen corresponding path program 1 times [2025-02-05 16:06:27,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:27,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39416000] [2025-02-05 16:06:27,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:27,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:27,562 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:27,566 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:27,566 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:27,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:27,648 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:27,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:27,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39416000] [2025-02-05 16:06:27,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39416000] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:27,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978233794] [2025-02-05 16:06:27,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:27,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:27,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:27,652 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:27,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 16:06:27,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:27,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:27,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:27,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:27,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 16:06:27,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 16:06:27,821 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:27,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978233794] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:27,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:27,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:06:27,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806465226] [2025-02-05 16:06:27,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:27,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:27,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:27,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:27,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:27,824 INFO L87 Difference]: Start difference. First operand 229 states and 338 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:28,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:28,018 INFO L93 Difference]: Finished difference Result 747 states and 1130 transitions. [2025-02-05 16:06:28,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:06:28,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2025-02-05 16:06:28,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:28,022 INFO L225 Difference]: With dead ends: 747 [2025-02-05 16:06:28,022 INFO L226 Difference]: Without dead ends: 531 [2025-02-05 16:06:28,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-05 16:06:28,024 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 250 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:28,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 425 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:06:28,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2025-02-05 16:06:28,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 485. [2025-02-05 16:06:28,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 418 states have (on average 1.4736842105263157) internal successors, (616), 427 states have internal predecessors, (616), 37 states have call successors, (37), 21 states have call predecessors, (37), 29 states have return successors, (71), 40 states have call predecessors, (71), 37 states have call successors, (71) [2025-02-05 16:06:28,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 724 transitions. [2025-02-05 16:06:28,073 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 724 transitions. Word has length 101 [2025-02-05 16:06:28,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:28,073 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 724 transitions. [2025-02-05 16:06:28,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:28,074 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 724 transitions. [2025-02-05 16:06:28,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-05 16:06:28,076 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:28,076 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:28,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 16:06:28,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:28,279 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:28,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:28,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1168308300, now seen corresponding path program 1 times [2025-02-05 16:06:28,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:28,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991733729] [2025-02-05 16:06:28,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:28,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:28,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:28,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:28,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:28,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:28,372 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:28,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991733729] [2025-02-05 16:06:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991733729] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333995101] [2025-02-05 16:06:28,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:28,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:28,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:28,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:28,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 16:06:28,416 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:28,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:28,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:28,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:28,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 16:06:28,468 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:28,544 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-05 16:06:28,545 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:28,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333995101] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:28,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:28,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:06:28,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340714160] [2025-02-05 16:06:28,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:28,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:28,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:28,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:28,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:28,546 INFO L87 Difference]: Start difference. First operand 485 states and 724 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:28,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:28,785 INFO L93 Difference]: Finished difference Result 1577 states and 2425 transitions. [2025-02-05 16:06:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:06:28,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2025-02-05 16:06:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:28,795 INFO L225 Difference]: With dead ends: 1577 [2025-02-05 16:06:28,795 INFO L226 Difference]: Without dead ends: 1113 [2025-02-05 16:06:28,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-05 16:06:28,798 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 245 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:28,798 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 409 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:06:28,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2025-02-05 16:06:28,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1045. [2025-02-05 16:06:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 904 states have (on average 1.4513274336283186) internal successors, (1312), 931 states have internal predecessors, (1312), 73 states have call successors, (73), 41 states have call predecessors, (73), 67 states have return successors, (201), 80 states have call predecessors, (201), 73 states have call successors, (201) [2025-02-05 16:06:28,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1586 transitions. [2025-02-05 16:06:28,874 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1586 transitions. Word has length 101 [2025-02-05 16:06:28,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:28,874 INFO L471 AbstractCegarLoop]: Abstraction has 1045 states and 1586 transitions. [2025-02-05 16:06:28,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:28,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1586 transitions. [2025-02-05 16:06:28,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-05 16:06:28,885 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:28,885 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:28,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 16:06:29,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:29,090 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:29,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:29,091 INFO L85 PathProgramCache]: Analyzing trace with hash -809708276, now seen corresponding path program 1 times [2025-02-05 16:06:29,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:29,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784417110] [2025-02-05 16:06:29,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:29,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:29,105 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:29,109 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:29,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:29,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:29,203 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:29,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784417110] [2025-02-05 16:06:29,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784417110] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:29,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515059714] [2025-02-05 16:06:29,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:29,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:29,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:29,207 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:29,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 16:06:29,246 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:29,291 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:29,291 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:29,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:29,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 16:06:29,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:29,374 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 16:06:29,377 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:29,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515059714] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:29,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:29,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:06:29,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326582777] [2025-02-05 16:06:29,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:29,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:29,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:29,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:29,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:29,379 INFO L87 Difference]: Start difference. First operand 1045 states and 1586 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:29,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:29,641 INFO L93 Difference]: Finished difference Result 3425 states and 5395 transitions. [2025-02-05 16:06:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 16:06:29,641 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2025-02-05 16:06:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:29,661 INFO L225 Difference]: With dead ends: 3425 [2025-02-05 16:06:29,661 INFO L226 Difference]: Without dead ends: 2417 [2025-02-05 16:06:29,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-02-05 16:06:29,669 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 226 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:29,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 407 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:06:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2025-02-05 16:06:29,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2285. [2025-02-05 16:06:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2285 states, 1970 states have (on average 1.4223350253807105) internal successors, (2802), 2059 states have internal predecessors, (2802), 145 states have call successors, (145), 81 states have call predecessors, (145), 169 states have return successors, (611), 160 states have call predecessors, (611), 145 states have call successors, (611) [2025-02-05 16:06:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2285 states to 2285 states and 3558 transitions. [2025-02-05 16:06:29,874 INFO L78 Accepts]: Start accepts. Automaton has 2285 states and 3558 transitions. Word has length 101 [2025-02-05 16:06:29,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:29,874 INFO L471 AbstractCegarLoop]: Abstraction has 2285 states and 3558 transitions. [2025-02-05 16:06:29,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:29,875 INFO L276 IsEmpty]: Start isEmpty. Operand 2285 states and 3558 transitions. [2025-02-05 16:06:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-05 16:06:29,888 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:29,889 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:29,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-05 16:06:30,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:30,090 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:30,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:30,091 INFO L85 PathProgramCache]: Analyzing trace with hash 466107052, now seen corresponding path program 1 times [2025-02-05 16:06:30,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:30,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855458140] [2025-02-05 16:06:30,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:30,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:30,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:30,108 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:30,109 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:30,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:30,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855458140] [2025-02-05 16:06:30,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855458140] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:30,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684046749] [2025-02-05 16:06:30,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:30,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:30,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:30,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:30,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 16:06:30,233 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:30,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:30,288 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:30,288 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:30,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 16:06:30,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:30,349 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:06:30,349 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:30,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684046749] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:30,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:30,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2025-02-05 16:06:30,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925699161] [2025-02-05 16:06:30,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:30,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:06:30,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:30,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:06:30,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:06:30,355 INFO L87 Difference]: Start difference. First operand 2285 states and 3558 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:30,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:30,480 INFO L93 Difference]: Finished difference Result 4549 states and 6998 transitions. [2025-02-05 16:06:30,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:06:30,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2025-02-05 16:06:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:30,493 INFO L225 Difference]: With dead ends: 4549 [2025-02-05 16:06:30,493 INFO L226 Difference]: Without dead ends: 2365 [2025-02-05 16:06:30,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:06:30,500 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:30,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 692 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:06:30,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2025-02-05 16:06:30,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2365. [2025-02-05 16:06:30,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2365 states, 2034 states have (on average 1.4090462143559488) internal successors, (2866), 2123 states have internal predecessors, (2866), 145 states have call successors, (145), 81 states have call predecessors, (145), 185 states have return successors, (643), 176 states have call predecessors, (643), 145 states have call successors, (643) [2025-02-05 16:06:30,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 3654 transitions. [2025-02-05 16:06:30,640 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 3654 transitions. Word has length 101 [2025-02-05 16:06:30,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:30,640 INFO L471 AbstractCegarLoop]: Abstraction has 2365 states and 3654 transitions. [2025-02-05 16:06:30,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 3654 transitions. [2025-02-05 16:06:30,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-05 16:06:30,650 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:30,650 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:30,656 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 [2025-02-05 16:06:30,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-05 16:06:30,855 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:30,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:30,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1852892462, now seen corresponding path program 1 times [2025-02-05 16:06:30,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:30,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167246214] [2025-02-05 16:06:30,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:30,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:30,865 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:30,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:30,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:30,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:30,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:30,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167246214] [2025-02-05 16:06:30,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167246214] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:30,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500115681] [2025-02-05 16:06:30,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:30,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:30,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:30,943 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:30,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 16:06:30,988 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:31,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:31,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:31,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:31,035 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:06:31,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-05 16:06:31,068 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:31,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500115681] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:31,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:31,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:06:31,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823717577] [2025-02-05 16:06:31,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:31,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:06:31,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:31,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:06:31,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:31,069 INFO L87 Difference]: Start difference. First operand 2365 states and 3654 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:31,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:31,167 INFO L93 Difference]: Finished difference Result 5182 states and 7979 transitions. [2025-02-05 16:06:31,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:06:31,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2025-02-05 16:06:31,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:31,202 INFO L225 Difference]: With dead ends: 5182 [2025-02-05 16:06:31,202 INFO L226 Difference]: Without dead ends: 2918 [2025-02-05 16:06:31,206 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:31,207 INFO L435 NwaCegarLoop]: 142 mSDtfsCounter, 65 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:31,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 270 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:06:31,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2025-02-05 16:06:31,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 2626. [2025-02-05 16:06:31,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2626 states, 2191 states have (on average 1.3738019169329074) internal successors, (3010), 2288 states have internal predecessors, (3010), 209 states have call successors, (209), 113 states have call predecessors, (209), 225 states have return successors, (788), 256 states have call predecessors, (788), 209 states have call successors, (788) [2025-02-05 16:06:31,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 4007 transitions. [2025-02-05 16:06:31,325 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 4007 transitions. Word has length 101 [2025-02-05 16:06:31,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:31,327 INFO L471 AbstractCegarLoop]: Abstraction has 2626 states and 4007 transitions. [2025-02-05 16:06:31,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:31,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 4007 transitions. [2025-02-05 16:06:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2025-02-05 16:06:31,337 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:31,338 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:31,344 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 16:06:31,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:31,538 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:31,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:31,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1369217135, now seen corresponding path program 1 times [2025-02-05 16:06:31,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:31,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030044161] [2025-02-05 16:06:31,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:31,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:31,546 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:31,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:31,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:31,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:31,592 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:31,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:31,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030044161] [2025-02-05 16:06:31,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030044161] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:31,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774438366] [2025-02-05 16:06:31,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:31,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:31,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:31,595 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:31,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 16:06:31,654 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-02-05 16:06:31,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-02-05 16:06:31,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:31,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:31,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 16:06:31,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-05 16:06:31,743 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:31,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774438366] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:31,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:31,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:06:31,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786981106] [2025-02-05 16:06:31,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:31,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:31,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:31,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:31,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:31,744 INFO L87 Difference]: Start difference. First operand 2626 states and 4007 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:31,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:31,861 INFO L93 Difference]: Finished difference Result 5074 states and 7724 transitions. [2025-02-05 16:06:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:06:31,862 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2025-02-05 16:06:31,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:31,879 INFO L225 Difference]: With dead ends: 5074 [2025-02-05 16:06:31,880 INFO L226 Difference]: Without dead ends: 2674 [2025-02-05 16:06:31,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:31,888 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:31,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 551 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:06:31,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2674 states. [2025-02-05 16:06:32,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2674 to 2674. [2025-02-05 16:06:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 2239 states have (on average 1.3657882983474765) internal successors, (3058), 2336 states have internal predecessors, (3058), 209 states have call successors, (209), 113 states have call predecessors, (209), 225 states have return successors, (788), 256 states have call predecessors, (788), 209 states have call successors, (788) [2025-02-05 16:06:32,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4055 transitions. [2025-02-05 16:06:32,054 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4055 transitions. Word has length 101 [2025-02-05 16:06:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:32,055 INFO L471 AbstractCegarLoop]: Abstraction has 2674 states and 4055 transitions. [2025-02-05 16:06:32,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4055 transitions. [2025-02-05 16:06:32,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-05 16:06:32,066 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:32,067 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:32,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 16:06:32,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:32,267 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:32,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:32,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1527675382, now seen corresponding path program 1 times [2025-02-05 16:06:32,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:32,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779681546] [2025-02-05 16:06:32,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:32,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:32,275 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-05 16:06:32,278 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-05 16:06:32,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:32,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:32,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:32,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779681546] [2025-02-05 16:06:32,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779681546] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:32,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952772636] [2025-02-05 16:06:32,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:32,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:32,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:32,335 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:32,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 16:06:32,385 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-05 16:06:32,439 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-05 16:06:32,440 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:32,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:32,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:06:32,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:32,465 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 16:06:32,465 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:32,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952772636] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:32,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:32,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:06:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161807043] [2025-02-05 16:06:32,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:32,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:06:32,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:32,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:06:32,467 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:32,467 INFO L87 Difference]: Start difference. First operand 2674 states and 4055 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:32,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:32,627 INFO L93 Difference]: Finished difference Result 5420 states and 8619 transitions. [2025-02-05 16:06:32,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:06:32,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2025-02-05 16:06:32,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:32,642 INFO L225 Difference]: With dead ends: 5420 [2025-02-05 16:06:32,642 INFO L226 Difference]: Without dead ends: 2956 [2025-02-05 16:06:32,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:32,651 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 15 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:32,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:06:32,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2025-02-05 16:06:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2956. [2025-02-05 16:06:32,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 2425 states have (on average 1.3509278350515463) internal successors, (3276), 2522 states have internal predecessors, (3276), 273 states have call successors, (273), 145 states have call predecessors, (273), 257 states have return successors, (1046), 320 states have call predecessors, (1046), 273 states have call successors, (1046) [2025-02-05 16:06:32,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 4595 transitions. [2025-02-05 16:06:32,804 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 4595 transitions. Word has length 104 [2025-02-05 16:06:32,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:32,804 INFO L471 AbstractCegarLoop]: Abstraction has 2956 states and 4595 transitions. [2025-02-05 16:06:32,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:32,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 4595 transitions. [2025-02-05 16:06:32,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-05 16:06:32,815 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:32,815 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:32,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 16:06:33,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:33,020 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:33,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:33,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1599095659, now seen corresponding path program 1 times [2025-02-05 16:06:33,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:33,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519141297] [2025-02-05 16:06:33,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:33,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:33,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-05 16:06:33,033 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-05 16:06:33,033 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:33,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:33,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519141297] [2025-02-05 16:06:33,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519141297] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:33,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830995214] [2025-02-05 16:06:33,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:33,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:33,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:33,094 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:33,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 16:06:33,158 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-05 16:06:33,214 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-05 16:06:33,214 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:33,214 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:33,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 16:06:33,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:33,296 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 16:06:33,296 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:33,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830995214] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:33,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:33,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:06:33,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85517804] [2025-02-05 16:06:33,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:33,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:33,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:33,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:33,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:33,298 INFO L87 Difference]: Start difference. First operand 2956 states and 4595 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:33,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:33,675 INFO L93 Difference]: Finished difference Result 9400 states and 15196 transitions. [2025-02-05 16:06:33,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 16:06:33,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2025-02-05 16:06:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:33,713 INFO L225 Difference]: With dead ends: 9400 [2025-02-05 16:06:33,713 INFO L226 Difference]: Without dead ends: 6702 [2025-02-05 16:06:33,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-05 16:06:33,726 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 210 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:33,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 727 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:06:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6702 states. [2025-02-05 16:06:34,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6702 to 6578. [2025-02-05 16:06:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6578 states, 5509 states have (on average 1.3479760392085678) internal successors, (7426), 5808 states have internal predecessors, (7426), 481 states have call successors, (481), 257 states have call predecessors, (481), 587 states have return successors, (2540), 576 states have call predecessors, (2540), 481 states have call successors, (2540) [2025-02-05 16:06:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6578 states to 6578 states and 10447 transitions. [2025-02-05 16:06:34,130 INFO L78 Accepts]: Start accepts. Automaton has 6578 states and 10447 transitions. Word has length 104 [2025-02-05 16:06:34,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:34,132 INFO L471 AbstractCegarLoop]: Abstraction has 6578 states and 10447 transitions. [2025-02-05 16:06:34,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:34,132 INFO L276 IsEmpty]: Start isEmpty. Operand 6578 states and 10447 transitions. [2025-02-05 16:06:34,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-05 16:06:34,170 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:34,170 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:34,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 16:06:34,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:34,371 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:34,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:34,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2087794774, now seen corresponding path program 1 times [2025-02-05 16:06:34,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:34,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002434725] [2025-02-05 16:06:34,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:34,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:34,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-05 16:06:34,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-05 16:06:34,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:34,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:34,430 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:34,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:34,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002434725] [2025-02-05 16:06:34,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002434725] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:34,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308014382] [2025-02-05 16:06:34,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:34,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:34,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:34,433 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:34,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 16:06:34,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 104 statements into 1 equivalence classes. [2025-02-05 16:06:34,515 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 104 of 104 statements. [2025-02-05 16:06:34,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:34,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:34,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 16:06:34,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:34,573 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:34,574 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:34,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308014382] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:34,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:34,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2025-02-05 16:06:34,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827842975] [2025-02-05 16:06:34,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:34,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:34,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:34,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:34,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:34,576 INFO L87 Difference]: Start difference. First operand 6578 states and 10447 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:34,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:34,994 INFO L93 Difference]: Finished difference Result 14354 states and 22461 transitions. [2025-02-05 16:06:34,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:06:34,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2025-02-05 16:06:34,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:35,053 INFO L225 Difference]: With dead ends: 14354 [2025-02-05 16:06:35,054 INFO L226 Difference]: Without dead ends: 8042 [2025-02-05 16:06:35,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:06:35,086 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 87 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:35,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 300 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:06:35,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8042 states. [2025-02-05 16:06:35,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8042 to 6578. [2025-02-05 16:06:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6578 states, 5509 states have (on average 1.3476129969141406) internal successors, (7424), 5808 states have internal predecessors, (7424), 481 states have call successors, (481), 257 states have call predecessors, (481), 587 states have return successors, (2540), 576 states have call predecessors, (2540), 481 states have call successors, (2540) [2025-02-05 16:06:35,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6578 states to 6578 states and 10445 transitions. [2025-02-05 16:06:35,443 INFO L78 Accepts]: Start accepts. Automaton has 6578 states and 10445 transitions. Word has length 104 [2025-02-05 16:06:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:35,443 INFO L471 AbstractCegarLoop]: Abstraction has 6578 states and 10445 transitions. [2025-02-05 16:06:35,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:35,444 INFO L276 IsEmpty]: Start isEmpty. Operand 6578 states and 10445 transitions. [2025-02-05 16:06:35,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-05 16:06:35,472 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:35,472 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:35,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-05 16:06:35,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-05 16:06:35,673 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:35,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:35,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1374195273, now seen corresponding path program 1 times [2025-02-05 16:06:35,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:35,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160003610] [2025-02-05 16:06:35,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:35,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:35,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 16:06:35,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 16:06:35,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:35,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:35,744 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:35,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:35,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160003610] [2025-02-05 16:06:35,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160003610] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:35,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466797677] [2025-02-05 16:06:35,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:35,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:35,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:35,747 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) [2025-02-05 16:06:35,750 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 [2025-02-05 16:06:35,797 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 16:06:35,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 16:06:35,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:35,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:35,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:06:35,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-05 16:06:35,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:35,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466797677] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:35,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:35,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:06:35,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302147347] [2025-02-05 16:06:35,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:35,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:06:35,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:35,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:06:35,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:35,877 INFO L87 Difference]: Start difference. First operand 6578 states and 10445 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:36,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:36,101 INFO L93 Difference]: Finished difference Result 13114 states and 21113 transitions. [2025-02-05 16:06:36,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:06:36,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2025-02-05 16:06:36,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:36,153 INFO L225 Difference]: With dead ends: 13114 [2025-02-05 16:06:36,153 INFO L226 Difference]: Without dead ends: 7014 [2025-02-05 16:06:36,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:36,175 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 19 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:36,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:06:36,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7014 states. [2025-02-05 16:06:36,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7014 to 7014. [2025-02-05 16:06:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7014 states, 5801 states have (on average 1.339079469057059) internal successors, (7768), 6100 states have internal predecessors, (7768), 577 states have call successors, (577), 305 states have call predecessors, (577), 635 states have return successors, (2916), 672 states have call predecessors, (2916), 577 states have call successors, (2916) [2025-02-05 16:06:36,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7014 states to 7014 states and 11261 transitions. [2025-02-05 16:06:36,566 INFO L78 Accepts]: Start accepts. Automaton has 7014 states and 11261 transitions. Word has length 107 [2025-02-05 16:06:36,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:36,567 INFO L471 AbstractCegarLoop]: Abstraction has 7014 states and 11261 transitions. [2025-02-05 16:06:36,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:36,567 INFO L276 IsEmpty]: Start isEmpty. Operand 7014 states and 11261 transitions. [2025-02-05 16:06:36,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-05 16:06:36,593 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:36,594 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:36,603 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 [2025-02-05 16:06:36,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:36,795 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:36,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:36,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1711529784, now seen corresponding path program 1 times [2025-02-05 16:06:36,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:36,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892721918] [2025-02-05 16:06:36,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:36,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:36,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 16:06:36,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 16:06:36,807 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:36,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:36,865 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:36,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:36,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892721918] [2025-02-05 16:06:36,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892721918] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:36,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475017440] [2025-02-05 16:06:36,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:36,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:36,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:36,869 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) [2025-02-05 16:06:36,875 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 [2025-02-05 16:06:36,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 16:06:36,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 16:06:36,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:36,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:36,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 16:06:36,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 16:06:37,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:37,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475017440] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:37,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:37,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:06:37,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262891021] [2025-02-05 16:06:37,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:37,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:37,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:37,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:37,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:37,057 INFO L87 Difference]: Start difference. First operand 7014 states and 11261 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:37,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:37,540 INFO L93 Difference]: Finished difference Result 13646 states and 21333 transitions. [2025-02-05 16:06:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 16:06:37,541 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 107 [2025-02-05 16:06:37,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:37,576 INFO L225 Difference]: With dead ends: 13646 [2025-02-05 16:06:37,576 INFO L226 Difference]: Without dead ends: 7174 [2025-02-05 16:06:37,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-05 16:06:37,599 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 198 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:37,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 695 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:06:37,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7174 states. [2025-02-05 16:06:37,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7174 to 7170. [2025-02-05 16:06:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7170 states, 5921 states have (on average 1.3298429319371727) internal successors, (7874), 6256 states have internal predecessors, (7874), 577 states have call successors, (577), 305 states have call predecessors, (577), 671 states have return successors, (2560), 672 states have call predecessors, (2560), 577 states have call successors, (2560) [2025-02-05 16:06:38,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 11011 transitions. [2025-02-05 16:06:38,030 INFO L78 Accepts]: Start accepts. Automaton has 7170 states and 11011 transitions. Word has length 107 [2025-02-05 16:06:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:38,030 INFO L471 AbstractCegarLoop]: Abstraction has 7170 states and 11011 transitions. [2025-02-05 16:06:38,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 7170 states and 11011 transitions. [2025-02-05 16:06:38,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-05 16:06:38,047 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:38,047 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:38,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-05 16:06:38,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:38,249 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:38,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:38,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1343054251, now seen corresponding path program 2 times [2025-02-05 16:06:38,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:38,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457831027] [2025-02-05 16:06:38,250 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 16:06:38,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:38,257 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-02-05 16:06:38,262 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 51 of 107 statements. [2025-02-05 16:06:38,262 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-05 16:06:38,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:38,308 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-05 16:06:38,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:38,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457831027] [2025-02-05 16:06:38,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457831027] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:38,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:06:38,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-05 16:06:38,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747363292] [2025-02-05 16:06:38,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:38,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:38,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:38,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:38,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:06:38,311 INFO L87 Difference]: Start difference. First operand 7170 states and 11011 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:06:38,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:38,501 INFO L93 Difference]: Finished difference Result 7366 states and 11270 transitions. [2025-02-05 16:06:38,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:06:38,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 107 [2025-02-05 16:06:38,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:38,541 INFO L225 Difference]: With dead ends: 7366 [2025-02-05 16:06:38,541 INFO L226 Difference]: Without dead ends: 7362 [2025-02-05 16:06:38,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-05 16:06:38,549 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:38,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 553 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:06:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7362 states. [2025-02-05 16:06:38,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7362 to 7362. [2025-02-05 16:06:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7362 states, 6113 states have (on average 1.3194830688696222) internal successors, (8066), 6448 states have internal predecessors, (8066), 577 states have call successors, (577), 305 states have call predecessors, (577), 671 states have return successors, (2560), 672 states have call predecessors, (2560), 577 states have call successors, (2560) [2025-02-05 16:06:38,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7362 states to 7362 states and 11203 transitions. [2025-02-05 16:06:38,956 INFO L78 Accepts]: Start accepts. Automaton has 7362 states and 11203 transitions. Word has length 107 [2025-02-05 16:06:38,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:38,957 INFO L471 AbstractCegarLoop]: Abstraction has 7362 states and 11203 transitions. [2025-02-05 16:06:38,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:06:38,957 INFO L276 IsEmpty]: Start isEmpty. Operand 7362 states and 11203 transitions. [2025-02-05 16:06:38,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-05 16:06:38,978 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:38,978 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:38,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-05 16:06:38,978 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:38,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:38,979 INFO L85 PathProgramCache]: Analyzing trace with hash 431953111, now seen corresponding path program 1 times [2025-02-05 16:06:38,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:38,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106410188] [2025-02-05 16:06:38,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:38,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:38,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 16:06:38,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 16:06:38,991 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:38,991 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:39,040 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:06:39,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:39,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106410188] [2025-02-05 16:06:39,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106410188] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:39,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988970409] [2025-02-05 16:06:39,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:39,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:39,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:39,043 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) [2025-02-05 16:06:39,048 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 [2025-02-05 16:06:39,090 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-05 16:06:39,130 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-05 16:06:39,130 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:39,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:39,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 16:06:39,134 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-05 16:06:39,175 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:39,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988970409] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:39,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:39,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2025-02-05 16:06:39,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785577062] [2025-02-05 16:06:39,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:39,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:06:39,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:39,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:06:39,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:06:39,177 INFO L87 Difference]: Start difference. First operand 7362 states and 11203 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:06:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:39,399 INFO L93 Difference]: Finished difference Result 14070 states and 21005 transitions. [2025-02-05 16:06:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:06:39,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 107 [2025-02-05 16:06:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:39,436 INFO L225 Difference]: With dead ends: 14070 [2025-02-05 16:06:39,436 INFO L226 Difference]: Without dead ends: 7266 [2025-02-05 16:06:39,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:06:39,455 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:39,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 692 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:06:39,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7266 states. [2025-02-05 16:06:39,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7266 to 7266. [2025-02-05 16:06:39,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 6017 states have (on average 1.313943825826824) internal successors, (7906), 6352 states have internal predecessors, (7906), 577 states have call successors, (577), 305 states have call predecessors, (577), 671 states have return successors, (2560), 672 states have call predecessors, (2560), 577 states have call successors, (2560) [2025-02-05 16:06:39,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 11043 transitions. [2025-02-05 16:06:39,744 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 11043 transitions. Word has length 107 [2025-02-05 16:06:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:39,744 INFO L471 AbstractCegarLoop]: Abstraction has 7266 states and 11043 transitions. [2025-02-05 16:06:39,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:06:39,745 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 11043 transitions. [2025-02-05 16:06:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-02-05 16:06:39,761 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:39,761 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:39,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-05 16:06:39,961 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,SelfDestructingSolverStorable15 [2025-02-05 16:06:39,962 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:39,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:39,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1393698087, now seen corresponding path program 1 times [2025-02-05 16:06:39,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:39,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144486605] [2025-02-05 16:06:39,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:39,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:39,970 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-02-05 16:06:39,972 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-02-05 16:06:39,972 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:39,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:40,019 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 16:06:40,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:40,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144486605] [2025-02-05 16:06:40,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144486605] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:40,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553348032] [2025-02-05 16:06:40,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:40,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:40,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:40,024 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) [2025-02-05 16:06:40,033 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 [2025-02-05 16:06:40,077 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 110 statements into 1 equivalence classes. [2025-02-05 16:06:40,124 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 110 of 110 statements. [2025-02-05 16:06:40,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:40,125 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:40,127 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 16:06:40,130 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:40,167 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 16:06:40,167 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:40,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553348032] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:40,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:40,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2025-02-05 16:06:40,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930092553] [2025-02-05 16:06:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:40,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:40,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:40,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:40,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:40,169 INFO L87 Difference]: Start difference. First operand 7266 states and 11043 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:40,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:40,660 INFO L93 Difference]: Finished difference Result 15454 states and 23283 transitions. [2025-02-05 16:06:40,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:06:40,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2025-02-05 16:06:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:40,693 INFO L225 Difference]: With dead ends: 15454 [2025-02-05 16:06:40,693 INFO L226 Difference]: Without dead ends: 8490 [2025-02-05 16:06:40,709 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:06:40,710 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 85 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:40,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 288 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:06:40,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8490 states. [2025-02-05 16:06:41,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8490 to 7266. [2025-02-05 16:06:41,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7266 states, 6017 states have (on average 1.313279042712315) internal successors, (7902), 6352 states have internal predecessors, (7902), 577 states have call successors, (577), 305 states have call predecessors, (577), 671 states have return successors, (2560), 672 states have call predecessors, (2560), 577 states have call successors, (2560) [2025-02-05 16:06:41,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7266 states to 7266 states and 11039 transitions. [2025-02-05 16:06:41,171 INFO L78 Accepts]: Start accepts. Automaton has 7266 states and 11039 transitions. Word has length 110 [2025-02-05 16:06:41,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:41,171 INFO L471 AbstractCegarLoop]: Abstraction has 7266 states and 11039 transitions. [2025-02-05 16:06:41,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:41,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7266 states and 11039 transitions. [2025-02-05 16:06:41,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-05 16:06:41,191 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:41,191 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:41,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-05 16:06:41,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-05 16:06:41,392 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:41,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:41,392 INFO L85 PathProgramCache]: Analyzing trace with hash 792759081, now seen corresponding path program 1 times [2025-02-05 16:06:41,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:41,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364841667] [2025-02-05 16:06:41,393 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:41,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:41,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 16:06:41,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 16:06:41,402 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:41,402 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 16:06:41,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:41,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364841667] [2025-02-05 16:06:41,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364841667] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:41,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800900313] [2025-02-05 16:06:41,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:41,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:41,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:41,438 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) [2025-02-05 16:06:41,439 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 [2025-02-05 16:06:41,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 16:06:41,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 16:06:41,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:41,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:41,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:06:41,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-05 16:06:41,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:41,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800900313] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:41,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:41,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:06:41,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751423830] [2025-02-05 16:06:41,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:41,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:06:41,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:41,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:06:41,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:41,529 INFO L87 Difference]: Start difference. First operand 7266 states and 11039 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:41,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:41,749 INFO L93 Difference]: Finished difference Result 14670 states and 22445 transitions. [2025-02-05 16:06:41,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:06:41,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 113 [2025-02-05 16:06:41,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:41,777 INFO L225 Difference]: With dead ends: 14670 [2025-02-05 16:06:41,777 INFO L226 Difference]: Without dead ends: 7930 [2025-02-05 16:06:41,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:41,790 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 21 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:41,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 283 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:06:41,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7930 states. [2025-02-05 16:06:42,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7930 to 7930. [2025-02-05 16:06:42,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7930 states, 6465 states have (on average 1.3008507347254448) internal successors, (8410), 6800 states have internal predecessors, (8410), 721 states have call successors, (721), 377 states have call predecessors, (721), 743 states have return successors, (3000), 816 states have call predecessors, (3000), 721 states have call successors, (3000) [2025-02-05 16:06:42,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7930 states to 7930 states and 12131 transitions. [2025-02-05 16:06:42,152 INFO L78 Accepts]: Start accepts. Automaton has 7930 states and 12131 transitions. Word has length 113 [2025-02-05 16:06:42,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:42,152 INFO L471 AbstractCegarLoop]: Abstraction has 7930 states and 12131 transitions. [2025-02-05 16:06:42,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:42,153 INFO L276 IsEmpty]: Start isEmpty. Operand 7930 states and 12131 transitions. [2025-02-05 16:06:42,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-05 16:06:42,178 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:42,179 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:42,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-05 16:06:42,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-05 16:06:42,380 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:42,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:42,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1647862678, now seen corresponding path program 1 times [2025-02-05 16:06:42,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:42,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424119785] [2025-02-05 16:06:42,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:42,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:42,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 16:06:42,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 16:06:42,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:42,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 16:06:42,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424119785] [2025-02-05 16:06:42,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424119785] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:42,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575703064] [2025-02-05 16:06:42,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:42,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:42,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:42,438 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) [2025-02-05 16:06:42,440 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 [2025-02-05 16:06:42,488 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 16:06:42,548 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 16:06:42,548 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:42,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:42,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 16:06:42,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 16:06:42,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:42,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575703064] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:42,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:42,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:06:42,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491157744] [2025-02-05 16:06:42,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:42,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:42,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:42,608 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:42,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:42,608 INFO L87 Difference]: Start difference. First operand 7930 states and 12131 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:43,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:43,040 INFO L93 Difference]: Finished difference Result 15448 states and 22963 transitions. [2025-02-05 16:06:43,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 16:06:43,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 113 [2025-02-05 16:06:43,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:43,068 INFO L225 Difference]: With dead ends: 15448 [2025-02-05 16:06:43,068 INFO L226 Difference]: Without dead ends: 8132 [2025-02-05 16:06:43,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-05 16:06:43,084 INFO L435 NwaCegarLoop]: 221 mSDtfsCounter, 194 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:43,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 650 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:06:43,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8132 states. [2025-02-05 16:06:43,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8132 to 8128. [2025-02-05 16:06:43,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8128 states, 6609 states have (on average 1.29081555454683) internal successors, (8531), 6998 states have internal predecessors, (8531), 721 states have call successors, (721), 377 states have call predecessors, (721), 797 states have return successors, (2680), 816 states have call predecessors, (2680), 721 states have call successors, (2680) [2025-02-05 16:06:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 11932 transitions. [2025-02-05 16:06:43,397 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 11932 transitions. Word has length 113 [2025-02-05 16:06:43,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:43,398 INFO L471 AbstractCegarLoop]: Abstraction has 8128 states and 11932 transitions. [2025-02-05 16:06:43,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:43,398 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 11932 transitions. [2025-02-05 16:06:43,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2025-02-05 16:06:43,417 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:43,417 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:43,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-05 16:06:43,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:43,618 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:43,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash 976591049, now seen corresponding path program 1 times [2025-02-05 16:06:43,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:43,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642048533] [2025-02-05 16:06:43,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:43,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:43,624 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 16:06:43,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 16:06:43,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:43,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 16:06:43,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:43,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642048533] [2025-02-05 16:06:43,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642048533] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:43,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219237399] [2025-02-05 16:06:43,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:43,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:43,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:43,662 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) [2025-02-05 16:06:43,664 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 [2025-02-05 16:06:43,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 113 statements into 1 equivalence classes. [2025-02-05 16:06:43,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 113 of 113 statements. [2025-02-05 16:06:43,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:43,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:43,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 16:06:43,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 16:06:43,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:43,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219237399] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:43,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:43,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2025-02-05 16:06:43,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665431467] [2025-02-05 16:06:43,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:43,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:43,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:43,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:43,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:43,789 INFO L87 Difference]: Start difference. First operand 8128 states and 11932 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:44,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:44,199 INFO L93 Difference]: Finished difference Result 16758 states and 24469 transitions. [2025-02-05 16:06:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:06:44,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 113 [2025-02-05 16:06:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:44,239 INFO L225 Difference]: With dead ends: 16758 [2025-02-05 16:06:44,239 INFO L226 Difference]: Without dead ends: 8992 [2025-02-05 16:06:44,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:06:44,258 INFO L435 NwaCegarLoop]: 107 mSDtfsCounter, 83 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:44,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 276 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:06:44,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8992 states. [2025-02-05 16:06:44,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8992 to 8128. [2025-02-05 16:06:44,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8128 states, 6609 states have (on average 1.2896050839763957) internal successors, (8523), 6998 states have internal predecessors, (8523), 721 states have call successors, (721), 377 states have call predecessors, (721), 797 states have return successors, (2680), 816 states have call predecessors, (2680), 721 states have call successors, (2680) [2025-02-05 16:06:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 11924 transitions. [2025-02-05 16:06:44,626 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 11924 transitions. Word has length 113 [2025-02-05 16:06:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:44,627 INFO L471 AbstractCegarLoop]: Abstraction has 8128 states and 11924 transitions. [2025-02-05 16:06:44,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 11924 transitions. [2025-02-05 16:06:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-05 16:06:44,646 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:44,646 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:44,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-05 16:06:44,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:44,847 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:44,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash 951579813, now seen corresponding path program 1 times [2025-02-05 16:06:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:44,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902340056] [2025-02-05 16:06:44,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:44,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:44,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-05 16:06:44,859 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 16:06:44,859 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:44,859 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:44,910 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 16:06:44,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:44,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902340056] [2025-02-05 16:06:44,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902340056] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:44,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790392434] [2025-02-05 16:06:44,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:44,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:44,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:44,914 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) [2025-02-05 16:06:44,922 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 [2025-02-05 16:06:44,972 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-05 16:06:45,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 16:06:45,029 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:45,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:45,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 16:06:45,033 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:45,092 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 16:06:45,092 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:45,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790392434] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:45,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:45,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:06:45,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293432103] [2025-02-05 16:06:45,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:45,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:45,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:45,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:45,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:45,093 INFO L87 Difference]: Start difference. First operand 8128 states and 11924 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:45,737 INFO L93 Difference]: Finished difference Result 19312 states and 28458 transitions. [2025-02-05 16:06:45,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 16:06:45,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 116 [2025-02-05 16:06:45,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:45,783 INFO L225 Difference]: With dead ends: 19312 [2025-02-05 16:06:45,784 INFO L226 Difference]: Without dead ends: 11798 [2025-02-05 16:06:45,801 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-05 16:06:45,801 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 208 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:45,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 520 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:06:45,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11798 states. [2025-02-05 16:06:46,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11798 to 11762. [2025-02-05 16:06:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11762 states, 9538 states have (on average 1.292199622562382) internal successors, (12325), 10084 states have internal predecessors, (12325), 1065 states have call successors, (1065), 565 states have call predecessors, (1065), 1158 states have return successors, (4016), 1208 states have call predecessors, (4016), 1065 states have call successors, (4016) [2025-02-05 16:06:46,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11762 states to 11762 states and 17406 transitions. [2025-02-05 16:06:46,330 INFO L78 Accepts]: Start accepts. Automaton has 11762 states and 17406 transitions. Word has length 116 [2025-02-05 16:06:46,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:46,331 INFO L471 AbstractCegarLoop]: Abstraction has 11762 states and 17406 transitions. [2025-02-05 16:06:46,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2025-02-05 16:06:46,331 INFO L276 IsEmpty]: Start isEmpty. Operand 11762 states and 17406 transitions. [2025-02-05 16:06:46,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2025-02-05 16:06:46,365 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:46,365 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:46,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-05 16:06:46,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:46,567 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:46,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:46,568 INFO L85 PathProgramCache]: Analyzing trace with hash 343502950, now seen corresponding path program 1 times [2025-02-05 16:06:46,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:46,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997988646] [2025-02-05 16:06:46,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:46,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:46,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-05 16:06:46,578 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 16:06:46,578 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:46,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-05 16:06:46,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:46,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997988646] [2025-02-05 16:06:46,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997988646] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:46,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687639693] [2025-02-05 16:06:46,622 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:46,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:46,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:46,625 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:46,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-05 16:06:46,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 116 statements into 1 equivalence classes. [2025-02-05 16:06:46,718 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 116 of 116 statements. [2025-02-05 16:06:46,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:46,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:46,721 INFO L256 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 16:06:46,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:46,840 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-05 16:06:46,840 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:46,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687639693] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:46,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:46,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2025-02-05 16:06:46,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385870211] [2025-02-05 16:06:46,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:46,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:06:46,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:46,841 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:06:46,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-05 16:06:46,841 INFO L87 Difference]: Start difference. First operand 11762 states and 17406 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:06:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:47,523 INFO L93 Difference]: Finished difference Result 17052 states and 24832 transitions. [2025-02-05 16:06:47,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-05 16:06:47,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 116 [2025-02-05 16:06:47,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:47,586 INFO L225 Difference]: With dead ends: 17052 [2025-02-05 16:06:47,586 INFO L226 Difference]: Without dead ends: 17048 [2025-02-05 16:06:47,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:47,594 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 171 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:47,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 256 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:06:47,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17048 states. [2025-02-05 16:06:48,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17048 to 16976. [2025-02-05 16:06:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16976 states, 13913 states have (on average 1.2881477754617983) internal successors, (17922), 14662 states have internal predecessors, (17922), 1395 states have call successors, (1395), 847 states have call predecessors, (1395), 1667 states have return successors, (5416), 1610 states have call predecessors, (5416), 1395 states have call successors, (5416) [2025-02-05 16:06:48,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16976 states to 16976 states and 24733 transitions. [2025-02-05 16:06:48,329 INFO L78 Accepts]: Start accepts. Automaton has 16976 states and 24733 transitions. Word has length 116 [2025-02-05 16:06:48,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:48,329 INFO L471 AbstractCegarLoop]: Abstraction has 16976 states and 24733 transitions. [2025-02-05 16:06:48,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:06:48,329 INFO L276 IsEmpty]: Start isEmpty. Operand 16976 states and 24733 transitions. [2025-02-05 16:06:48,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-02-05 16:06:48,364 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:48,364 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:48,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-05 16:06:48,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:48,565 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:48,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash -244527190, now seen corresponding path program 1 times [2025-02-05 16:06:48,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:48,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640331311] [2025-02-05 16:06:48,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:48,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:48,571 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-05 16:06:48,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-05 16:06:48,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:48,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:48,679 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 16:06:48,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:48,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640331311] [2025-02-05 16:06:48,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640331311] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:48,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845305467] [2025-02-05 16:06:48,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:48,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:48,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:48,682 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:48,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-05 16:06:48,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 119 statements into 1 equivalence classes. [2025-02-05 16:06:48,754 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 119 of 119 statements. [2025-02-05 16:06:48,754 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:48,755 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:48,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 16:06:48,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-05 16:06:48,802 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:48,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845305467] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:48,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:48,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2025-02-05 16:06:48,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314655206] [2025-02-05 16:06:48,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:48,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:48,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:48,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:48,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:06:48,803 INFO L87 Difference]: Start difference. First operand 16976 states and 24733 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:50,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:50,685 INFO L93 Difference]: Finished difference Result 48874 states and 72215 transitions. [2025-02-05 16:06:50,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-05 16:06:50,686 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 119 [2025-02-05 16:06:50,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:50,820 INFO L225 Difference]: With dead ends: 48874 [2025-02-05 16:06:50,821 INFO L226 Difference]: Without dead ends: 32008 [2025-02-05 16:06:50,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2025-02-05 16:06:50,874 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 231 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:50,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 301 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:06:50,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32008 states. [2025-02-05 16:06:52,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32008 to 31212. [2025-02-05 16:06:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31212 states, 25526 states have (on average 1.2574238031810703) internal successors, (32097), 27192 states have internal predecessors, (32097), 2183 states have call successors, (2183), 1693 states have call predecessors, (2183), 3502 states have return successors, (9184), 2374 states have call predecessors, (9184), 2183 states have call successors, (9184) [2025-02-05 16:06:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31212 states to 31212 states and 43464 transitions. [2025-02-05 16:06:52,509 INFO L78 Accepts]: Start accepts. Automaton has 31212 states and 43464 transitions. Word has length 119 [2025-02-05 16:06:52,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:52,509 INFO L471 AbstractCegarLoop]: Abstraction has 31212 states and 43464 transitions. [2025-02-05 16:06:52,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2025-02-05 16:06:52,510 INFO L276 IsEmpty]: Start isEmpty. Operand 31212 states and 43464 transitions. [2025-02-05 16:06:52,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-02-05 16:06:52,539 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:52,539 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:52,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-05 16:06:52,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-05 16:06:52,743 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:52,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1317178783, now seen corresponding path program 1 times [2025-02-05 16:06:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:52,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853738693] [2025-02-05 16:06:52,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:52,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:52,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-02-05 16:06:52,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-02-05 16:06:52,763 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:52,763 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 16:06:52,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:52,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853738693] [2025-02-05 16:06:52,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853738693] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:52,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2138585859] [2025-02-05 16:06:52,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:52,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:52,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:52,904 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:52,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-05 16:06:52,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 134 statements into 1 equivalence classes. [2025-02-05 16:06:52,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 134 of 134 statements. [2025-02-05 16:06:52,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:52,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:52,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 16:06:52,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 16:06:53,000 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:53,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2138585859] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:53,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:53,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:06:53,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970348608] [2025-02-05 16:06:53,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:53,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:06:53,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:53,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:06:53,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:53,002 INFO L87 Difference]: Start difference. First operand 31212 states and 43464 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-05 16:06:54,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:54,141 INFO L93 Difference]: Finished difference Result 62248 states and 86537 transitions. [2025-02-05 16:06:54,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:06:54,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 134 [2025-02-05 16:06:54,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:54,249 INFO L225 Difference]: With dead ends: 62248 [2025-02-05 16:06:54,249 INFO L226 Difference]: Without dead ends: 31428 [2025-02-05 16:06:54,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:06:54,296 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:54,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 270 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:06:54,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31428 states. [2025-02-05 16:06:55,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31428 to 31428. [2025-02-05 16:06:55,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31428 states, 25742 states have (on average 1.2552637712687438) internal successors, (32313), 27408 states have internal predecessors, (32313), 2183 states have call successors, (2183), 1693 states have call predecessors, (2183), 3502 states have return successors, (9184), 2374 states have call predecessors, (9184), 2183 states have call successors, (9184) [2025-02-05 16:06:56,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31428 states to 31428 states and 43680 transitions. [2025-02-05 16:06:56,099 INFO L78 Accepts]: Start accepts. Automaton has 31428 states and 43680 transitions. Word has length 134 [2025-02-05 16:06:56,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:56,100 INFO L471 AbstractCegarLoop]: Abstraction has 31428 states and 43680 transitions. [2025-02-05 16:06:56,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-05 16:06:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand 31428 states and 43680 transitions. [2025-02-05 16:06:56,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-02-05 16:06:56,128 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:06:56,129 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:06:56,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-05 16:06:56,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-05 16:06:56,329 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:06:56,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:06:56,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1418043478, now seen corresponding path program 1 times [2025-02-05 16:06:56,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:06:56,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933764827] [2025-02-05 16:06:56,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:56,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:06:56,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-02-05 16:06:56,339 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-02-05 16:06:56,339 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:56,339 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 16:06:56,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:06:56,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933764827] [2025-02-05 16:06:56,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933764827] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:06:56,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539931488] [2025-02-05 16:06:56,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:06:56,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:06:56,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:06:56,389 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:06:56,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-05 16:06:56,435 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 135 statements into 1 equivalence classes. [2025-02-05 16:06:56,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 135 of 135 statements. [2025-02-05 16:06:56,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:06:56,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:06:56,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:06:56,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:06:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 16:06:56,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:06:56,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539931488] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:06:56,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:06:56,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:06:56,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400086575] [2025-02-05 16:06:56,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:06:56,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:06:56,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:06:56,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:06:56,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:56,599 INFO L87 Difference]: Start difference. First operand 31428 states and 43680 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 16:06:58,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:06:58,196 INFO L93 Difference]: Finished difference Result 62464 states and 86537 transitions. [2025-02-05 16:06:58,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:06:58,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 135 [2025-02-05 16:06:58,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:06:58,324 INFO L225 Difference]: With dead ends: 62464 [2025-02-05 16:06:58,324 INFO L226 Difference]: Without dead ends: 31428 [2025-02-05 16:06:58,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:06:58,388 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 290 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:06:58,389 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 143 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:06:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31428 states. [2025-02-05 16:06:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31428 to 31428. [2025-02-05 16:06:59,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31428 states, 25742 states have (on average 1.2524667857975293) internal successors, (32241), 27408 states have internal predecessors, (32241), 2183 states have call successors, (2183), 1693 states have call predecessors, (2183), 3502 states have return successors, (9184), 2374 states have call predecessors, (9184), 2183 states have call successors, (9184) [2025-02-05 16:06:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31428 states to 31428 states and 43608 transitions. [2025-02-05 16:06:59,974 INFO L78 Accepts]: Start accepts. Automaton has 31428 states and 43608 transitions. Word has length 135 [2025-02-05 16:06:59,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:06:59,975 INFO L471 AbstractCegarLoop]: Abstraction has 31428 states and 43608 transitions. [2025-02-05 16:06:59,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 16:06:59,975 INFO L276 IsEmpty]: Start isEmpty. Operand 31428 states and 43608 transitions. [2025-02-05 16:07:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-02-05 16:07:00,003 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:00,003 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:00,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-05 16:07:00,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2025-02-05 16:07:00,204 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:00,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash 726015847, now seen corresponding path program 1 times [2025-02-05 16:07:00,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:00,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795462808] [2025-02-05 16:07:00,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:00,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:00,209 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 16:07:00,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 16:07:00,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:00,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 16:07:00,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:00,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795462808] [2025-02-05 16:07:00,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795462808] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:07:00,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598973827] [2025-02-05 16:07:00,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:00,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:07:00,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:07:00,245 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:07:00,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-05 16:07:00,287 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 16:07:00,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 16:07:00,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:00,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:00,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:07:00,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:07:00,338 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 16:07:00,338 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:07:00,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598973827] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:00,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:07:00,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:07:00,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797707843] [2025-02-05 16:07:00,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:00,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:07:00,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:00,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:07:00,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:00,339 INFO L87 Difference]: Start difference. First operand 31428 states and 43608 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-05 16:07:01,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:01,497 INFO L93 Difference]: Finished difference Result 63328 states and 87833 transitions. [2025-02-05 16:07:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:07:01,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 136 [2025-02-05 16:07:01,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:01,615 INFO L225 Difference]: With dead ends: 63328 [2025-02-05 16:07:01,615 INFO L226 Difference]: Without dead ends: 32292 [2025-02-05 16:07:01,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:01,675 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 11 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:01,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 280 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:07:01,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32292 states. [2025-02-05 16:07:03,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32292 to 32004. [2025-02-05 16:07:03,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32004 states, 26318 states have (on average 1.257884337715632) internal successors, (33105), 27984 states have internal predecessors, (33105), 2183 states have call successors, (2183), 1693 states have call predecessors, (2183), 3502 states have return successors, (9184), 2374 states have call predecessors, (9184), 2183 states have call successors, (9184) [2025-02-05 16:07:03,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32004 states to 32004 states and 44472 transitions. [2025-02-05 16:07:03,967 INFO L78 Accepts]: Start accepts. Automaton has 32004 states and 44472 transitions. Word has length 136 [2025-02-05 16:07:03,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:03,968 INFO L471 AbstractCegarLoop]: Abstraction has 32004 states and 44472 transitions. [2025-02-05 16:07:03,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-05 16:07:03,968 INFO L276 IsEmpty]: Start isEmpty. Operand 32004 states and 44472 transitions. [2025-02-05 16:07:03,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-02-05 16:07:03,996 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:03,996 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:04,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-02-05 16:07:04,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-05 16:07:04,197 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:04,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:04,197 INFO L85 PathProgramCache]: Analyzing trace with hash -944497722, now seen corresponding path program 1 times [2025-02-05 16:07:04,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:04,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791492236] [2025-02-05 16:07:04,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:04,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:04,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 16:07:04,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 16:07:04,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:04,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 16:07:04,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:04,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791492236] [2025-02-05 16:07:04,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791492236] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:07:04,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261052037] [2025-02-05 16:07:04,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:04,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:07:04,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:07:04,242 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:07:04,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-05 16:07:04,284 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 16:07:04,325 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 16:07:04,325 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:04,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:04,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:07:04,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:07:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 16:07:04,339 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:07:04,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261052037] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:04,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:07:04,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-05 16:07:04,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078153524] [2025-02-05 16:07:04,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:04,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 16:07:04,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:04,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 16:07:04,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:04,340 INFO L87 Difference]: Start difference. First operand 32004 states and 44472 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-05 16:07:05,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:05,709 INFO L93 Difference]: Finished difference Result 63616 states and 88121 transitions. [2025-02-05 16:07:05,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 16:07:05,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 136 [2025-02-05 16:07:05,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:05,857 INFO L225 Difference]: With dead ends: 63616 [2025-02-05 16:07:05,857 INFO L226 Difference]: Without dead ends: 32004 [2025-02-05 16:07:05,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:07:05,927 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 3 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:05,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 266 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:07:05,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32004 states. [2025-02-05 16:07:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32004 to 31932. [2025-02-05 16:07:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31932 states, 26246 states have (on average 1.2448754095862227) internal successors, (32673), 27912 states have internal predecessors, (32673), 2183 states have call successors, (2183), 1693 states have call predecessors, (2183), 3502 states have return successors, (9184), 2374 states have call predecessors, (9184), 2183 states have call successors, (9184) [2025-02-05 16:07:07,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31932 states to 31932 states and 44040 transitions. [2025-02-05 16:07:07,753 INFO L78 Accepts]: Start accepts. Automaton has 31932 states and 44040 transitions. Word has length 136 [2025-02-05 16:07:07,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:07,754 INFO L471 AbstractCegarLoop]: Abstraction has 31932 states and 44040 transitions. [2025-02-05 16:07:07,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2025-02-05 16:07:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 31932 states and 44040 transitions. [2025-02-05 16:07:07,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2025-02-05 16:07:07,778 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:07,778 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:07,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-05 16:07:07,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2025-02-05 16:07:07,979 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:07,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:07,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1383017402, now seen corresponding path program 1 times [2025-02-05 16:07:07,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:07,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635663416] [2025-02-05 16:07:07,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:07,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:07,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 16:07:07,989 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 16:07:07,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:07,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 16:07:08,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635663416] [2025-02-05 16:07:08,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635663416] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:07:08,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271565274] [2025-02-05 16:07:08,035 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:08,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:07:08,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:07:08,041 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:07:08,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-05 16:07:08,079 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 136 statements into 1 equivalence classes. [2025-02-05 16:07:08,120 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 136 of 136 statements. [2025-02-05 16:07:08,120 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:08,120 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:08,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:07:08,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:07:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 16:07:08,212 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:07:08,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271565274] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:08,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:07:08,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:07:08,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249867627] [2025-02-05 16:07:08,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:08,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:07:08,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:08,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:07:08,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:07:08,213 INFO L87 Difference]: Start difference. First operand 31932 states and 44040 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 16:07:09,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:09,407 INFO L93 Difference]: Finished difference Result 63472 states and 87257 transitions. [2025-02-05 16:07:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:07:09,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 136 [2025-02-05 16:07:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:09,538 INFO L225 Difference]: With dead ends: 63472 [2025-02-05 16:07:09,538 INFO L226 Difference]: Without dead ends: 31932 [2025-02-05 16:07:09,602 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:07:09,603 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 227 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:09,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 174 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:07:09,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31932 states. [2025-02-05 16:07:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31932 to 31932. [2025-02-05 16:07:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31932 states, 26246 states have (on average 1.2393888592547435) internal successors, (32529), 27912 states have internal predecessors, (32529), 2183 states have call successors, (2183), 1693 states have call predecessors, (2183), 3502 states have return successors, (9184), 2374 states have call predecessors, (9184), 2183 states have call successors, (9184) [2025-02-05 16:07:12,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31932 states to 31932 states and 43896 transitions. [2025-02-05 16:07:12,063 INFO L78 Accepts]: Start accepts. Automaton has 31932 states and 43896 transitions. Word has length 136 [2025-02-05 16:07:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:12,063 INFO L471 AbstractCegarLoop]: Abstraction has 31932 states and 43896 transitions. [2025-02-05 16:07:12,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 16:07:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 31932 states and 43896 transitions. [2025-02-05 16:07:12,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2025-02-05 16:07:12,089 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:12,089 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:12,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-05 16:07:12,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-05 16:07:12,289 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:12,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:12,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1065086762, now seen corresponding path program 1 times [2025-02-05 16:07:12,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:12,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228120210] [2025-02-05 16:07:12,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:12,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:12,298 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-05 16:07:12,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-05 16:07:12,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:12,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:12,334 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 16:07:12,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:12,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228120210] [2025-02-05 16:07:12,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228120210] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:07:12,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796609511] [2025-02-05 16:07:12,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:12,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:07:12,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:07:12,336 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:07:12,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-05 16:07:12,376 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 137 statements into 1 equivalence classes. [2025-02-05 16:07:12,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 137 of 137 statements. [2025-02-05 16:07:12,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:12,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:12,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:07:12,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:07:12,503 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-05 16:07:12,503 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:07:12,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796609511] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:07:12,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:07:12,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-02-05 16:07:12,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46040285] [2025-02-05 16:07:12,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:12,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:07:12,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:12,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:07:12,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:07:12,504 INFO L87 Difference]: Start difference. First operand 31932 states and 43896 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 16:07:14,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:14,444 INFO L93 Difference]: Finished difference Result 62968 states and 86393 transitions. [2025-02-05 16:07:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:07:14,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 137 [2025-02-05 16:07:14,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:14,580 INFO L225 Difference]: With dead ends: 62968 [2025-02-05 16:07:14,581 INFO L226 Difference]: Without dead ends: 31428 [2025-02-05 16:07:14,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-05 16:07:14,648 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 181 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:14,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 146 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:07:14,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31428 states. [2025-02-05 16:07:16,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31428 to 31428. [2025-02-05 16:07:16,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31428 states, 25742 states have (on average 1.2356848729702432) internal successors, (31809), 27408 states have internal predecessors, (31809), 2183 states have call successors, (2183), 1693 states have call predecessors, (2183), 3502 states have return successors, (9184), 2374 states have call predecessors, (9184), 2183 states have call successors, (9184) [2025-02-05 16:07:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31428 states to 31428 states and 43176 transitions. [2025-02-05 16:07:16,574 INFO L78 Accepts]: Start accepts. Automaton has 31428 states and 43176 transitions. Word has length 137 [2025-02-05 16:07:16,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:16,576 INFO L471 AbstractCegarLoop]: Abstraction has 31428 states and 43176 transitions. [2025-02-05 16:07:16,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 16:07:16,576 INFO L276 IsEmpty]: Start isEmpty. Operand 31428 states and 43176 transitions. [2025-02-05 16:07:16,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-05 16:07:16,603 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:16,603 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:16,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-02-05 16:07:16,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-05 16:07:16,804 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:16,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:16,805 INFO L85 PathProgramCache]: Analyzing trace with hash -984016762, now seen corresponding path program 1 times [2025-02-05 16:07:16,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:16,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111327507] [2025-02-05 16:07:16,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:16,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:16,811 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 16:07:16,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 16:07:16,814 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:16,814 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-02-05 16:07:16,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:16,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111327507] [2025-02-05 16:07:16,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111327507] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:07:16,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863927016] [2025-02-05 16:07:16,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:16,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:07:16,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:07:16,854 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:07:16,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-05 16:07:16,898 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 16:07:16,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 16:07:16,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:16,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:16,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 586 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 16:07:16,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:07:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 16:07:17,021 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:07:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-05 16:07:17,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863927016] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:07:17,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:07:17,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-05 16:07:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917166661] [2025-02-05 16:07:17,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:07:17,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 16:07:17,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:17,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 16:07:17,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:17,191 INFO L87 Difference]: Start difference. First operand 31428 states and 43176 transitions. Second operand has 9 states, 9 states have (on average 21.444444444444443) internal successors, (193), 9 states have internal predecessors, (193), 4 states have call successors, (24), 6 states have call predecessors, (24), 8 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-02-05 16:07:18,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:18,586 INFO L93 Difference]: Finished difference Result 53603 states and 73746 transitions. [2025-02-05 16:07:18,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 16:07:18,586 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.444444444444443) internal successors, (193), 9 states have internal predecessors, (193), 4 states have call successors, (24), 6 states have call predecessors, (24), 8 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 138 [2025-02-05 16:07:18,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:18,683 INFO L225 Difference]: With dead ends: 53603 [2025-02-05 16:07:18,683 INFO L226 Difference]: Without dead ends: 22469 [2025-02-05 16:07:18,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 282 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=531, Unknown=0, NotChecked=0, Total=702 [2025-02-05 16:07:18,743 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 518 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:18,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 878 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:07:18,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22469 states. [2025-02-05 16:07:19,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22469 to 22369. [2025-02-05 16:07:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22369 states, 18305 states have (on average 1.2173723026495493) internal successors, (22284), 19587 states have internal predecessors, (22284), 1509 states have call successors, (1509), 1177 states have call predecessors, (1509), 2554 states have return successors, (5801), 1636 states have call predecessors, (5801), 1509 states have call successors, (5801) [2025-02-05 16:07:19,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22369 states to 22369 states and 29594 transitions. [2025-02-05 16:07:19,958 INFO L78 Accepts]: Start accepts. Automaton has 22369 states and 29594 transitions. Word has length 138 [2025-02-05 16:07:19,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:19,958 INFO L471 AbstractCegarLoop]: Abstraction has 22369 states and 29594 transitions. [2025-02-05 16:07:19,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.444444444444443) internal successors, (193), 9 states have internal predecessors, (193), 4 states have call successors, (24), 6 states have call predecessors, (24), 8 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2025-02-05 16:07:19,958 INFO L276 IsEmpty]: Start isEmpty. Operand 22369 states and 29594 transitions. [2025-02-05 16:07:19,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-05 16:07:19,975 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:07:19,975 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:07:19,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-02-05 16:07:20,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:07:20,176 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:07:20,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:07:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2021240217, now seen corresponding path program 1 times [2025-02-05 16:07:20,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:07:20,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799401799] [2025-02-05 16:07:20,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:20,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:07:20,181 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 16:07:20,185 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 16:07:20,185 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:20,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 16:07:20,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:07:20,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799401799] [2025-02-05 16:07:20,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799401799] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:07:20,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728625939] [2025-02-05 16:07:20,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:07:20,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:07:20,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:07:20,239 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:07:20,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-05 16:07:20,279 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 138 statements into 1 equivalence classes. [2025-02-05 16:07:20,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 138 of 138 statements. [2025-02-05 16:07:20,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:07:20,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:07:20,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-05 16:07:20,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:07:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 42 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:07:20,393 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:07:20,454 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-05 16:07:20,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728625939] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-05 16:07:20,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-05 16:07:20,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 9 [2025-02-05 16:07:20,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120348017] [2025-02-05 16:07:20,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:07:20,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-05 16:07:20,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:07:20,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-05 16:07:20,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:20,456 INFO L87 Difference]: Start difference. First operand 22369 states and 29594 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 16:07:23,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:07:23,355 INFO L93 Difference]: Finished difference Result 70222 states and 95132 transitions. [2025-02-05 16:07:23,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:07:23,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 138 [2025-02-05 16:07:23,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:07:23,526 INFO L225 Difference]: With dead ends: 70222 [2025-02-05 16:07:23,526 INFO L226 Difference]: Without dead ends: 55352 [2025-02-05 16:07:23,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2025-02-05 16:07:23,565 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 715 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:07:23,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 483 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:07:23,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55352 states. [2025-02-05 16:07:26,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55352 to 54020. [2025-02-05 16:07:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54020 states, 44340 states have (on average 1.2275372124492558) internal successors, (54429), 47278 states have internal predecessors, (54429), 3561 states have call successors, (3561), 2941 states have call predecessors, (3561), 6118 states have return successors, (14752), 3832 states have call predecessors, (14752), 3561 states have call successors, (14752) [2025-02-05 16:07:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54020 states to 54020 states and 72742 transitions. [2025-02-05 16:07:26,898 INFO L78 Accepts]: Start accepts. Automaton has 54020 states and 72742 transitions. Word has length 138 [2025-02-05 16:07:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:07:26,898 INFO L471 AbstractCegarLoop]: Abstraction has 54020 states and 72742 transitions. [2025-02-05 16:07:26,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (11), 1 states have call predecessors, (11), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2025-02-05 16:07:26,899 INFO L276 IsEmpty]: Start isEmpty. Operand 54020 states and 72742 transitions.