./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-invgen/up.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-invgen/up.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 02:58:16,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 02:58:16,427 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 02:58:16,430 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 02:58:16,431 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 02:58:16,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 02:58:16,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 02:58:16,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 02:58:16,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 02:58:16,446 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 02:58:16,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 02:58:16,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 02:58:16,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 02:58:16,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 02:58:16,446 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 02:58:16,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 02:58:16,447 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 02:58:16,447 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 02:58:16,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 02:58:16,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 02:58:16,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 02:58:16,447 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 02:58:16,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 02:58:16,447 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 02:58:16,447 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 02:58:16,447 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 02:58:16,448 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 02:58:16,448 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 02:58:16,448 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 02:58:16,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:58:16,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:58:16,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:58:16,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:58:16,448 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 02:58:16,448 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 02:58:16,448 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 02:58:16,448 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 02:58:16,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:58:16,449 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 02:58:16,449 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 02:58:16,449 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 02:58:16,449 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 02:58:16,449 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 02:58:16,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 02:58:16,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 02:58:16,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 02:58:16,449 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 02:58:16,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 02:58:16,450 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 -> ff5c10c83c8d29dcc2c2798035fa2754df224d2313ad9c91b6ee5bb6ca3d9a9f [2025-01-09 02:58:16,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 02:58:16,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 02:58:16,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 02:58:16,670 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 02:58:16,670 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 02:58:16,671 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/up.i [2025-01-09 02:58:17,928 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/afe2ee850/e8dfa0802b4e46a992ff25e06f0e86db/FLAG040e73d57 [2025-01-09 02:58:18,129 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 02:58:18,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-invgen/up.i [2025-01-09 02:58:18,152 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/afe2ee850/e8dfa0802b4e46a992ff25e06f0e86db/FLAG040e73d57 [2025-01-09 02:58:18,168 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/afe2ee850/e8dfa0802b4e46a992ff25e06f0e86db [2025-01-09 02:58:18,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 02:58:18,171 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 02:58:18,172 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 02:58:18,172 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 02:58:18,176 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 02:58:18,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,177 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e56fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18, skipping insertion in model container [2025-01-09 02:58:18,178 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,188 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 02:58:18,290 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/loop-invgen/up.i[893,906] [2025-01-09 02:58:18,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:58:18,307 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 02:58:18,314 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/loop-invgen/up.i[893,906] [2025-01-09 02:58:18,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 02:58:18,326 INFO L204 MainTranslator]: Completed translation [2025-01-09 02:58:18,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18 WrapperNode [2025-01-09 02:58:18,326 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 02:58:18,327 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 02:58:18,327 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 02:58:18,327 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 02:58:18,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,342 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2025-01-09 02:58:18,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 02:58:18,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 02:58:18,343 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 02:58:18,343 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 02:58:18,348 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,348 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,349 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,355 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 02:58:18,355 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,355 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,356 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,358 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,359 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,360 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 02:58:18,360 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 02:58:18,360 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 02:58:18,360 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 02:58:18,361 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (1/1) ... [2025-01-09 02:58:18,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 02:58:18,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:18,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 02:58:18,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 02:58:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 02:58:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 02:58:18,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 02:58:18,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 02:58:18,432 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 02:58:18,434 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 02:58:18,482 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-01-09 02:58:18,483 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 02:58:18,487 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 02:58:18,488 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 02:58:18,488 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:58:18 BoogieIcfgContainer [2025-01-09 02:58:18,488 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 02:58:18,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 02:58:18,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 02:58:18,492 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 02:58:18,492 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 02:58:18" (1/3) ... [2025-01-09 02:58:18,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596382be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:58:18, skipping insertion in model container [2025-01-09 02:58:18,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 02:58:18" (2/3) ... [2025-01-09 02:58:18,493 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596382be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 02:58:18, skipping insertion in model container [2025-01-09 02:58:18,493 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 02:58:18" (3/3) ... [2025-01-09 02:58:18,494 INFO L128 eAbstractionObserver]: Analyzing ICFG up.i [2025-01-09 02:58:18,502 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 02:58:18,503 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG up.i that has 1 procedures, 11 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-01-09 02:58:18,529 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 02:58:18,536 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;@24b96289, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 02:58:18,536 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 02:58:18,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:18,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 02:58:18,542 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:18,542 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 02:58:18,542 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:18,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:18,545 INFO L85 PathProgramCache]: Analyzing trace with hash 889601065, now seen corresponding path program 1 times [2025-01-09 02:58:18,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:18,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181118338] [2025-01-09 02:58:18,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:58:18,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:18,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 02:58:18,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 02:58:18,601 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:18,601 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:18,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:18,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181118338] [2025-01-09 02:58:18,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181118338] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:58:18,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 02:58:18,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 02:58:18,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102812821] [2025-01-09 02:58:18,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:58:18,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 02:58:18,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:18,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 02:58:18,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 02:58:18,709 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:18,730 INFO L93 Difference]: Finished difference Result 21 states and 26 transitions. [2025-01-09 02:58:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 02:58:18,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-01-09 02:58:18,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:18,735 INFO L225 Difference]: With dead ends: 21 [2025-01-09 02:58:18,735 INFO L226 Difference]: Without dead ends: 9 [2025-01-09 02:58:18,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 02:58:18,738 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:18,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2025-01-09 02:58:18,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2025-01-09 02:58:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2025-01-09 02:58:18,755 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2025-01-09 02:58:18,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:18,756 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2025-01-09 02:58:18,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:18,756 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2025-01-09 02:58:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-09 02:58:18,756 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:18,756 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:18,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 02:58:18,757 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:18,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:18,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1805860105, now seen corresponding path program 1 times [2025-01-09 02:58:18,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:18,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020716062] [2025-01-09 02:58:18,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:58:18,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:18,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 02:58:18,766 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 02:58:18,766 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:18,766 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:18,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:18,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:18,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020716062] [2025-01-09 02:58:18,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020716062] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:18,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080533385] [2025-01-09 02:58:18,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:58:18,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:18,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:18,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:18,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 02:58:18,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 02:58:18,869 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 02:58:18,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:18,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:18,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 02:58:18,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:18,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:18,905 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 02:58:18,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080533385] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 02:58:18,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 02:58:18,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-01-09 02:58:18,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095822007] [2025-01-09 02:58:18,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 02:58:18,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 02:58:18,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:18,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 02:58:18,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-01-09 02:58:18,907 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:18,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:18,933 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2025-01-09 02:58:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 02:58:18,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-01-09 02:58:18,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:18,934 INFO L225 Difference]: With dead ends: 19 [2025-01-09 02:58:18,934 INFO L226 Difference]: Without dead ends: 17 [2025-01-09 02:58:18,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-09 02:58:18,935 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:18,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:18,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-01-09 02:58:18,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2025-01-09 02:58:18,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:18,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2025-01-09 02:58:18,937 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2025-01-09 02:58:18,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:18,937 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2025-01-09 02:58:18,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:18,938 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2025-01-09 02:58:18,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 02:58:18,938 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:18,938 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:18,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 02:58:19,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:19,142 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:19,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:19,144 INFO L85 PathProgramCache]: Analyzing trace with hash -377153276, now seen corresponding path program 1 times [2025-01-09 02:58:19,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:19,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943775061] [2025-01-09 02:58:19,145 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:58:19,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:19,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 02:58:19,160 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 02:58:19,160 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:19,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:19,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:19,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:19,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943775061] [2025-01-09 02:58:19,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943775061] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:19,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259629572] [2025-01-09 02:58:19,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 02:58:19,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:19,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:19,230 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:19,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 02:58:19,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 02:58:19,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 02:58:19,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:19,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:19,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 02:58:19,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:19,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:19,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:19,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259629572] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:19,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:19,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-01-09 02:58:19,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10864631] [2025-01-09 02:58:19,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:19,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 02:58:19,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:19,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 02:58:19,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-09 02:58:19,373 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:19,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:19,403 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2025-01-09 02:58:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 02:58:19,404 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-09 02:58:19,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:19,404 INFO L225 Difference]: With dead ends: 21 [2025-01-09 02:58:19,404 INFO L226 Difference]: Without dead ends: 12 [2025-01-09 02:58:19,404 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-01-09 02:58:19,405 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:19,405 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:19,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-01-09 02:58:19,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-01-09 02:58:19,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:19,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2025-01-09 02:58:19,407 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 10 [2025-01-09 02:58:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:19,407 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2025-01-09 02:58:19,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:19,407 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2025-01-09 02:58:19,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-01-09 02:58:19,407 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:19,407 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 02:58:19,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:19,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:19,608 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:19,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:19,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1778996764, now seen corresponding path program 2 times [2025-01-09 02:58:19,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:19,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953384607] [2025-01-09 02:58:19,609 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:19,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:19,615 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-01-09 02:58:19,629 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 02:58:19,629 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:19,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:19,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:19,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953384607] [2025-01-09 02:58:19,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953384607] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:19,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610634834] [2025-01-09 02:58:19,735 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:19,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:19,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:19,738 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:19,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 02:58:19,780 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 2 equivalence classes. [2025-01-09 02:58:19,798 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 11 of 11 statements. [2025-01-09 02:58:19,798 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:19,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:19,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 02:58:19,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:19,854 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:19,922 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:19,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610634834] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:19,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:19,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2025-01-09 02:58:19,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541767375] [2025-01-09 02:58:19,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:19,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 02:58:19,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:19,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 02:58:19,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-01-09 02:58:19,923 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:20,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:20,001 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2025-01-09 02:58:20,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 02:58:20,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-01-09 02:58:20,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:20,002 INFO L225 Difference]: With dead ends: 23 [2025-01-09 02:58:20,002 INFO L226 Difference]: Without dead ends: 21 [2025-01-09 02:58:20,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2025-01-09 02:58:20,003 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:20,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 27 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:20,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-01-09 02:58:20,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2025-01-09 02:58:20,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2025-01-09 02:58:20,006 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 11 [2025-01-09 02:58:20,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:20,006 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2025-01-09 02:58:20,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2025-01-09 02:58:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 02:58:20,007 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:20,007 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-09 02:58:20,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 02:58:20,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:20,212 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:20,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:20,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1808644681, now seen corresponding path program 3 times [2025-01-09 02:58:20,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:20,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130636733] [2025-01-09 02:58:20,214 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:20,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:20,221 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 3 equivalence classes. [2025-01-09 02:58:20,225 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 02:58:20,226 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 02:58:20,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:20,295 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:20,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:20,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130636733] [2025-01-09 02:58:20,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130636733] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:20,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581720715] [2025-01-09 02:58:20,296 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:20,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:20,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:20,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:20,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 02:58:20,317 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 14 statements into 3 equivalence classes. [2025-01-09 02:58:20,325 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 02:58:20,325 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-01-09 02:58:20,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:20,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 02:58:20,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:20,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:20,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:20,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581720715] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:20,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:20,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-01-09 02:58:20,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015912593] [2025-01-09 02:58:20,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:20,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 02:58:20,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:20,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 02:58:20,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-01-09 02:58:20,461 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:20,486 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2025-01-09 02:58:20,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 02:58:20,487 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-01-09 02:58:20,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:20,487 INFO L225 Difference]: With dead ends: 28 [2025-01-09 02:58:20,487 INFO L226 Difference]: Without dead ends: 16 [2025-01-09 02:58:20,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-01-09 02:58:20,488 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:20,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:20,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-01-09 02:58:20,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-01-09 02:58:20,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2025-01-09 02:58:20,490 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 14 [2025-01-09 02:58:20,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:20,491 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2025-01-09 02:58:20,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:20,491 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2025-01-09 02:58:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-09 02:58:20,491 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:20,491 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1] [2025-01-09 02:58:20,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:20,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:20,692 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:20,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1900796713, now seen corresponding path program 4 times [2025-01-09 02:58:20,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:20,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858951057] [2025-01-09 02:58:20,693 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:20,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:20,697 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-01-09 02:58:20,712 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 02:58:20,712 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:20,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:20,790 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:20,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:20,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858951057] [2025-01-09 02:58:20,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858951057] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:20,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361753518] [2025-01-09 02:58:20,790 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:20,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:20,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:20,792 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:20,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 02:58:20,828 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 15 statements into 2 equivalence classes. [2025-01-09 02:58:20,836 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-01-09 02:58:20,836 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:20,836 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:20,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 02:58:20,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:20,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:20,901 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:20,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:20,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361753518] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:20,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:20,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 8 [2025-01-09 02:58:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730491280] [2025-01-09 02:58:20,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:20,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 02:58:20,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:20,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 02:58:20,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-01-09 02:58:20,934 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:20,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:20,965 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2025-01-09 02:58:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 02:58:20,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-01-09 02:58:20,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:20,966 INFO L225 Difference]: With dead ends: 27 [2025-01-09 02:58:20,966 INFO L226 Difference]: Without dead ends: 25 [2025-01-09 02:58:20,966 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2025-01-09 02:58:20,967 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:20,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 17 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-01-09 02:58:20,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2025-01-09 02:58:20,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:20,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2025-01-09 02:58:20,969 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2025-01-09 02:58:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:20,969 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2025-01-09 02:58:20,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2025-01-09 02:58:20,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 02:58:20,970 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:20,970 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1] [2025-01-09 02:58:20,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:21,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:21,171 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:21,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1790854884, now seen corresponding path program 5 times [2025-01-09 02:58:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:21,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902557056] [2025-01-09 02:58:21,171 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:21,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:21,175 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 4 equivalence classes. [2025-01-09 02:58:21,180 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 02:58:21,180 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 02:58:21,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:21,242 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:21,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:21,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902557056] [2025-01-09 02:58:21,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902557056] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:21,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708132263] [2025-01-09 02:58:21,243 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:21,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:21,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:21,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:21,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 02:58:21,265 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 18 statements into 4 equivalence classes. [2025-01-09 02:58:21,273 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 02:58:21,273 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2025-01-09 02:58:21,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:21,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 02:58:21,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:21,358 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:21,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708132263] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:21,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:21,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2025-01-09 02:58:21,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265523509] [2025-01-09 02:58:21,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:21,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 02:58:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:21,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 02:58:21,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-01-09 02:58:21,418 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:21,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:21,447 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2025-01-09 02:58:21,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 02:58:21,447 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-01-09 02:58:21,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:21,448 INFO L225 Difference]: With dead ends: 35 [2025-01-09 02:58:21,448 INFO L226 Difference]: Without dead ends: 20 [2025-01-09 02:58:21,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-01-09 02:58:21,448 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:21,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:21,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-01-09 02:58:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-01-09 02:58:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2025-01-09 02:58:21,451 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2025-01-09 02:58:21,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:21,451 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2025-01-09 02:58:21,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:21,451 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2025-01-09 02:58:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 02:58:21,451 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:21,451 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1] [2025-01-09 02:58:21,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:21,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-01-09 02:58:21,655 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:21,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:21,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1350629316, now seen corresponding path program 6 times [2025-01-09 02:58:21,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:21,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985775538] [2025-01-09 02:58:21,655 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:21,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:21,659 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-01-09 02:58:21,664 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 02:58:21,664 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 02:58:21,664 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:21,728 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:21,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:21,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985775538] [2025-01-09 02:58:21,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985775538] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:21,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353106216] [2025-01-09 02:58:21,729 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:21,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:21,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:21,730 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:21,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 02:58:21,753 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 19 statements into 4 equivalence classes. [2025-01-09 02:58:21,762 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 02:58:21,762 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2025-01-09 02:58:21,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:21,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 02:58:21,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:21,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:21,842 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:21,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353106216] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:21,842 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:21,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2025-01-09 02:58:21,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084294385] [2025-01-09 02:58:21,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:21,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 02:58:21,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:21,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 02:58:21,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2025-01-09 02:58:21,843 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:21,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:21,888 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2025-01-09 02:58:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 02:58:21,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-01-09 02:58:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:21,889 INFO L225 Difference]: With dead ends: 31 [2025-01-09 02:58:21,889 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 02:58:21,889 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 8 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2025-01-09 02:58:21,890 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:21,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 21 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 02:58:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2025-01-09 02:58:21,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:21,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2025-01-09 02:58:21,892 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 19 [2025-01-09 02:58:21,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:21,892 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2025-01-09 02:58:21,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:21,892 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2025-01-09 02:58:21,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-01-09 02:58:21,892 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:21,892 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1] [2025-01-09 02:58:21,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:22,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:22,093 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:22,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:22,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1349132393, now seen corresponding path program 7 times [2025-01-09 02:58:22,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:22,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133153366] [2025-01-09 02:58:22,094 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:22,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:22,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 02:58:22,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 02:58:22,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:22,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:22,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133153366] [2025-01-09 02:58:22,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133153366] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:22,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447831175] [2025-01-09 02:58:22,190 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:22,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:22,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:22,192 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:22,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 02:58:22,216 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-01-09 02:58:22,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-01-09 02:58:22,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:22,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:22,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 02:58:22,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:22,313 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:22,374 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:22,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447831175] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:22,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:22,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2025-01-09 02:58:22,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384497390] [2025-01-09 02:58:22,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:22,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 02:58:22,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:22,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 02:58:22,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2025-01-09 02:58:22,376 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:22,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:22,410 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2025-01-09 02:58:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 02:58:22,411 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-01-09 02:58:22,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:22,411 INFO L225 Difference]: With dead ends: 42 [2025-01-09 02:58:22,411 INFO L226 Difference]: Without dead ends: 24 [2025-01-09 02:58:22,411 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2025-01-09 02:58:22,412 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:22,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:22,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-09 02:58:22,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-01-09 02:58:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2025-01-09 02:58:22,414 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2025-01-09 02:58:22,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:22,414 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2025-01-09 02:58:22,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 19 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2025-01-09 02:58:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 02:58:22,415 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:22,415 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1] [2025-01-09 02:58:22,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:22,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:22,615 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:22,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:22,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1101619529, now seen corresponding path program 8 times [2025-01-09 02:58:22,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:22,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449259295] [2025-01-09 02:58:22,616 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:22,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:22,632 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-01-09 02:58:22,635 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 02:58:22,635 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:22,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:22,739 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:22,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:22,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449259295] [2025-01-09 02:58:22,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449259295] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:22,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373905119] [2025-01-09 02:58:22,739 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:22,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:22,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:22,741 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:22,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 02:58:22,762 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-01-09 02:58:22,771 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 02:58:22,771 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:22,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:22,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 02:58:22,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:22,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:22,885 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 15 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:22,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373905119] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:22,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:22,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2025-01-09 02:58:22,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413023971] [2025-01-09 02:58:22,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:22,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 02:58:22,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:22,885 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 02:58:22,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2025-01-09 02:58:22,886 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:22,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:22,966 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2025-01-09 02:58:22,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 02:58:22,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-01-09 02:58:22,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:22,966 INFO L225 Difference]: With dead ends: 35 [2025-01-09 02:58:22,966 INFO L226 Difference]: Without dead ends: 33 [2025-01-09 02:58:22,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 11 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2025-01-09 02:58:22,967 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:22,967 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:22,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2025-01-09 02:58:22,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2025-01-09 02:58:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:22,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2025-01-09 02:58:22,969 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 23 [2025-01-09 02:58:22,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:22,969 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2025-01-09 02:58:22,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:22,969 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2025-01-09 02:58:22,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-01-09 02:58:22,970 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:22,970 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1] [2025-01-09 02:58:22,977 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 [2025-01-09 02:58:23,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:23,170 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:23,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:23,172 INFO L85 PathProgramCache]: Analyzing trace with hash 507088068, now seen corresponding path program 9 times [2025-01-09 02:58:23,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:23,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621079829] [2025-01-09 02:58:23,172 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:23,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:23,176 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 6 equivalence classes. [2025-01-09 02:58:23,182 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 02:58:23,182 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 02:58:23,182 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 27 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:23,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:23,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621079829] [2025-01-09 02:58:23,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621079829] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:23,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740673522] [2025-01-09 02:58:23,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:23,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:23,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:23,309 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:23,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 02:58:23,335 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 26 statements into 6 equivalence classes. [2025-01-09 02:58:23,347 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 26 of 26 statements. [2025-01-09 02:58:23,347 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-01-09 02:58:23,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:23,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 02:58:23,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:23,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:23,594 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 40 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:23,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740673522] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:23,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:23,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 22 [2025-01-09 02:58:23,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312691478] [2025-01-09 02:58:23,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:23,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 02:58:23,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:23,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 02:58:23,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2025-01-09 02:58:23,595 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:23,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:23,655 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2025-01-09 02:58:23,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-01-09 02:58:23,656 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-01-09 02:58:23,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:23,656 INFO L225 Difference]: With dead ends: 49 [2025-01-09 02:58:23,656 INFO L226 Difference]: Without dead ends: 28 [2025-01-09 02:58:23,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 34 SyntacticMatches, 10 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2025-01-09 02:58:23,657 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:23,657 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:23,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-09 02:58:23,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-01-09 02:58:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2025-01-09 02:58:23,659 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2025-01-09 02:58:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:23,659 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2025-01-09 02:58:23,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2025-01-09 02:58:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 02:58:23,661 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:23,661 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1] [2025-01-09 02:58:23,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:23,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:23,862 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:23,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash -366125660, now seen corresponding path program 10 times [2025-01-09 02:58:23,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:23,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690842295] [2025-01-09 02:58:23,862 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:23,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:23,874 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-01-09 02:58:23,895 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 02:58:23,895 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:23,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:23,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:23,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690842295] [2025-01-09 02:58:24,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690842295] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:24,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991912094] [2025-01-09 02:58:24,000 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:24,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:24,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:24,007 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:24,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 02:58:24,045 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 27 statements into 2 equivalence classes. [2025-01-09 02:58:24,061 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 02:58:24,061 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:24,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:24,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 02:58:24,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:24,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:24,258 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:24,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991912094] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:24,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:24,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 11 [2025-01-09 02:58:24,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652408229] [2025-01-09 02:58:24,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:24,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 02:58:24,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:24,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 02:58:24,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2025-01-09 02:58:24,259 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:24,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:24,357 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2025-01-09 02:58:24,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 02:58:24,360 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-01-09 02:58:24,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:24,361 INFO L225 Difference]: With dead ends: 39 [2025-01-09 02:58:24,361 INFO L226 Difference]: Without dead ends: 37 [2025-01-09 02:58:24,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 46 SyntacticMatches, 12 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2025-01-09 02:58:24,361 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:24,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 16 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:24,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-09 02:58:24,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2025-01-09 02:58:24,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:24,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2025-01-09 02:58:24,363 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2025-01-09 02:58:24,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:24,364 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2025-01-09 02:58:24,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:24,364 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2025-01-09 02:58:24,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-01-09 02:58:24,364 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:24,364 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1] [2025-01-09 02:58:24,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:24,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 02:58:24,568 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:24,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:24,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1972203145, now seen corresponding path program 11 times [2025-01-09 02:58:24,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:24,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102942216] [2025-01-09 02:58:24,568 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:24,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:24,572 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 7 equivalence classes. [2025-01-09 02:58:24,597 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 02:58:24,597 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-09 02:58:24,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:24,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:24,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102942216] [2025-01-09 02:58:24,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102942216] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:24,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652489776] [2025-01-09 02:58:24,752 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:24,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:24,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:24,754 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:24,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 02:58:24,783 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 30 statements into 7 equivalence classes. [2025-01-09 02:58:24,797 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) and asserted 30 of 30 statements. [2025-01-09 02:58:24,797 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2025-01-09 02:58:24,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:24,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 02:58:24,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:24,941 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:24,942 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:25,042 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 57 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:25,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652489776] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:25,042 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:25,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 23 [2025-01-09 02:58:25,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400549585] [2025-01-09 02:58:25,042 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:25,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 02:58:25,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:25,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 02:58:25,043 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2025-01-09 02:58:25,044 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:25,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:25,106 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2025-01-09 02:58:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-01-09 02:58:25,107 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-01-09 02:58:25,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:25,108 INFO L225 Difference]: With dead ends: 56 [2025-01-09 02:58:25,108 INFO L226 Difference]: Without dead ends: 32 [2025-01-09 02:58:25,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 13 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2025-01-09 02:58:25,109 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:25,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:25,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-01-09 02:58:25,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-01-09 02:58:25,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.064516129032258) internal successors, (33), 31 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:25,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2025-01-09 02:58:25,115 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 30 [2025-01-09 02:58:25,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:25,115 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2025-01-09 02:58:25,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:25,116 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2025-01-09 02:58:25,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 02:58:25,117 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:25,117 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1] [2025-01-09 02:58:25,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 02:58:25,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:25,318 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:25,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:25,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1888628887, now seen corresponding path program 12 times [2025-01-09 02:58:25,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:25,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826778870] [2025-01-09 02:58:25,319 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:25,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:25,323 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 7 equivalence classes. [2025-01-09 02:58:25,330 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 02:58:25,330 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 02:58:25,330 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:25,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:25,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826778870] [2025-01-09 02:58:25,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826778870] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:25,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014009854] [2025-01-09 02:58:25,457 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:25,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:25,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:25,458 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:25,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 02:58:25,484 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 31 statements into 7 equivalence classes. [2025-01-09 02:58:25,499 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 02:58:25,499 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-01-09 02:58:25,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:25,499 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 02:58:25,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:25,544 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:25,544 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 28 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:25,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014009854] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:25,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:25,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2025-01-09 02:58:25,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625382626] [2025-01-09 02:58:25,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:25,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 02:58:25,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:25,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 02:58:25,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2025-01-09 02:58:25,630 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:25,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:25,712 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2025-01-09 02:58:25,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 02:58:25,712 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-01-09 02:58:25,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:25,713 INFO L225 Difference]: With dead ends: 43 [2025-01-09 02:58:25,713 INFO L226 Difference]: Without dead ends: 41 [2025-01-09 02:58:25,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 14 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2025-01-09 02:58:25,713 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:25,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:25,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-01-09 02:58:25,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2025-01-09 02:58:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 34 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:25,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2025-01-09 02:58:25,715 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2025-01-09 02:58:25,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:25,715 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2025-01-09 02:58:25,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:25,716 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2025-01-09 02:58:25,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 02:58:25,716 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:25,716 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1] [2025-01-09 02:58:25,722 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 [2025-01-09 02:58:25,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:25,918 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:25,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:25,919 INFO L85 PathProgramCache]: Analyzing trace with hash -66786652, now seen corresponding path program 13 times [2025-01-09 02:58:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:25,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037212983] [2025-01-09 02:58:25,919 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:25,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:25,925 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 02:58:25,929 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 02:58:25,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:25,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 58 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:26,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:26,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037212983] [2025-01-09 02:58:26,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037212983] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:26,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981678482] [2025-01-09 02:58:26,096 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:26,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:26,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:26,101 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:26,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 02:58:26,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 02:58:26,137 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 02:58:26,137 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:26,137 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:26,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 02:58:26,138 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:26,323 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:26,454 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 77 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:26,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981678482] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:26,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:26,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 28 [2025-01-09 02:58:26,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852361494] [2025-01-09 02:58:26,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:26,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 02:58:26,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:26,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 02:58:26,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2025-01-09 02:58:26,456 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:26,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:26,526 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2025-01-09 02:58:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-01-09 02:58:26,527 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-01-09 02:58:26,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:26,527 INFO L225 Difference]: With dead ends: 63 [2025-01-09 02:58:26,527 INFO L226 Difference]: Without dead ends: 36 [2025-01-09 02:58:26,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 44 SyntacticMatches, 14 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2025-01-09 02:58:26,528 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:26,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:26,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-01-09 02:58:26,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-01-09 02:58:26,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2025-01-09 02:58:26,530 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 34 [2025-01-09 02:58:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:26,530 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2025-01-09 02:58:26,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:26,530 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2025-01-09 02:58:26,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-01-09 02:58:26,530 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:26,530 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1] [2025-01-09 02:58:26,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:26,731 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,SelfDestructingSolverStorable14 [2025-01-09 02:58:26,731 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:26,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:26,731 INFO L85 PathProgramCache]: Analyzing trace with hash 2064243588, now seen corresponding path program 14 times [2025-01-09 02:58:26,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:26,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026078325] [2025-01-09 02:58:26,731 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:26,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:26,735 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-01-09 02:58:26,738 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 02:58:26,739 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:26,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 28 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:26,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:26,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026078325] [2025-01-09 02:58:26,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026078325] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:26,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23222861] [2025-01-09 02:58:26,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:26,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:26,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:26,872 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:26,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 02:58:26,902 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 35 statements into 2 equivalence classes. [2025-01-09 02:58:26,916 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 35 of 35 statements. [2025-01-09 02:58:26,916 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:26,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:26,917 INFO L256 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 02:58:26,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:26,972 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:26,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 36 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23222861] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:27,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:27,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2025-01-09 02:58:27,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755671194] [2025-01-09 02:58:27,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:27,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 02:58:27,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:27,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 02:58:27,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2025-01-09 02:58:27,099 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:27,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:27,190 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2025-01-09 02:58:27,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 02:58:27,190 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-01-09 02:58:27,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:27,191 INFO L225 Difference]: With dead ends: 47 [2025-01-09 02:58:27,191 INFO L226 Difference]: Without dead ends: 45 [2025-01-09 02:58:27,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 17 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2025-01-09 02:58:27,191 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:27,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:27,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-01-09 02:58:27,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2025-01-09 02:58:27,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 38 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:27,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2025-01-09 02:58:27,195 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 35 [2025-01-09 02:58:27,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:27,195 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2025-01-09 02:58:27,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2025-01-09 02:58:27,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 02:58:27,195 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:27,195 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1] [2025-01-09 02:58:27,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-09 02:58:27,396 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,SelfDestructingSolverStorable15 [2025-01-09 02:58:27,396 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:27,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:27,396 INFO L85 PathProgramCache]: Analyzing trace with hash 543794345, now seen corresponding path program 15 times [2025-01-09 02:58:27,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:27,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815892549] [2025-01-09 02:58:27,396 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:27,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:27,401 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 9 equivalence classes. [2025-01-09 02:58:27,410 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 02:58:27,410 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-09 02:58:27,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:27,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:27,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815892549] [2025-01-09 02:58:27,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815892549] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:27,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262772422] [2025-01-09 02:58:27,634 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:27,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:27,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:27,635 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:27,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 02:58:27,664 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 38 statements into 9 equivalence classes. [2025-01-09 02:58:27,681 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 02:58:27,681 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-09 02:58:27,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:27,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 02:58:27,682 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:27,925 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:27,925 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 100 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:28,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262772422] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:28,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:28,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 31 [2025-01-09 02:58:28,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339931627] [2025-01-09 02:58:28,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:28,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-01-09 02:58:28,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:28,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-01-09 02:58:28,075 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2025-01-09 02:58:28,076 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:28,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:28,265 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2025-01-09 02:58:28,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 02:58:28,266 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-01-09 02:58:28,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:28,269 INFO L225 Difference]: With dead ends: 70 [2025-01-09 02:58:28,269 INFO L226 Difference]: Without dead ends: 40 [2025-01-09 02:58:28,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 49 SyntacticMatches, 16 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=223, Invalid=707, Unknown=0, NotChecked=0, Total=930 [2025-01-09 02:58:28,270 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:28,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 87 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:58:28,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-01-09 02:58:28,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-01-09 02:58:28,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2025-01-09 02:58:28,280 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 38 [2025-01-09 02:58:28,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:28,280 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2025-01-09 02:58:28,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.2580645161290325) internal successors, (70), 31 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:28,280 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2025-01-09 02:58:28,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-01-09 02:58:28,281 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:28,281 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1] [2025-01-09 02:58:28,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:28,481 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,SelfDestructingSolverStorable16 [2025-01-09 02:58:28,481 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:28,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:28,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1077205623, now seen corresponding path program 16 times [2025-01-09 02:58:28,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:28,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997669973] [2025-01-09 02:58:28,482 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:28,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:28,486 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-09 02:58:28,496 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:58:28,496 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:28,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:28,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:28,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997669973] [2025-01-09 02:58:28,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997669973] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:28,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241599708] [2025-01-09 02:58:28,636 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:28,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:28,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:28,638 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:28,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 02:58:28,669 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 39 statements into 2 equivalence classes. [2025-01-09 02:58:28,683 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-01-09 02:58:28,683 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:28,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:28,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 02:58:28,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:28,729 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:28,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 45 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:28,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241599708] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:28,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:28,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2025-01-09 02:58:28,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239479222] [2025-01-09 02:58:28,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:28,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 02:58:28,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:28,845 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 02:58:28,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-01-09 02:58:28,845 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:28,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:28,926 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2025-01-09 02:58:28,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 02:58:28,927 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-01-09 02:58:28,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:28,927 INFO L225 Difference]: With dead ends: 51 [2025-01-09 02:58:28,927 INFO L226 Difference]: Without dead ends: 49 [2025-01-09 02:58:28,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 67 SyntacticMatches, 18 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=309, Unknown=0, NotChecked=0, Total=506 [2025-01-09 02:58:28,928 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:28,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 19 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:28,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-01-09 02:58:28,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2025-01-09 02:58:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:28,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2025-01-09 02:58:28,930 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 39 [2025-01-09 02:58:28,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:28,930 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2025-01-09 02:58:28,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 14 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:28,931 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2025-01-09 02:58:28,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-01-09 02:58:28,931 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:28,931 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 1, 1, 1, 1, 1] [2025-01-09 02:58:28,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-09 02:58:29,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-01-09 02:58:29,132 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:29,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash 967729284, now seen corresponding path program 17 times [2025-01-09 02:58:29,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:29,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231503835] [2025-01-09 02:58:29,133 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:29,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:29,136 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 10 equivalence classes. [2025-01-09 02:58:29,144 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 42 of 42 statements. [2025-01-09 02:58:29,144 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-01-09 02:58:29,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:29,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:29,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231503835] [2025-01-09 02:58:29,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231503835] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:29,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001851855] [2025-01-09 02:58:29,384 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:29,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:29,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:29,387 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:29,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 02:58:29,417 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 10 equivalence classes. [2025-01-09 02:58:29,434 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 42 of 42 statements. [2025-01-09 02:58:29,434 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-01-09 02:58:29,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:29,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-01-09 02:58:29,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:29,692 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:29,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:29,850 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 126 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:29,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001851855] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:29,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:29,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 32 [2025-01-09 02:58:29,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544215648] [2025-01-09 02:58:29,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:29,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 02:58:29,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:29,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 02:58:29,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2025-01-09 02:58:29,852 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:29,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:29,912 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2025-01-09 02:58:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 02:58:29,916 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2025-01-09 02:58:29,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:29,916 INFO L225 Difference]: With dead ends: 77 [2025-01-09 02:58:29,916 INFO L226 Difference]: Without dead ends: 44 [2025-01-09 02:58:29,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 55 SyntacticMatches, 19 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2025-01-09 02:58:29,917 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:29,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:29,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-01-09 02:58:29,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-01-09 02:58:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:29,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2025-01-09 02:58:29,921 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 42 [2025-01-09 02:58:29,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:29,921 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2025-01-09 02:58:29,921 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:29,921 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2025-01-09 02:58:29,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-01-09 02:58:29,922 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:29,922 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1] [2025-01-09 02:58:29,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-09 02:58:30,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:30,126 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:30,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:30,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1487171940, now seen corresponding path program 18 times [2025-01-09 02:58:30,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:30,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730683247] [2025-01-09 02:58:30,127 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:30,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:30,130 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 10 equivalence classes. [2025-01-09 02:58:30,139 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 43 of 43 statements. [2025-01-09 02:58:30,139 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-01-09 02:58:30,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:30,274 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 45 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:30,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:30,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730683247] [2025-01-09 02:58:30,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730683247] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:30,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162646000] [2025-01-09 02:58:30,275 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:30,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:30,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:30,276 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:30,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 02:58:30,307 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 43 statements into 10 equivalence classes. [2025-01-09 02:58:30,324 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 43 of 43 statements. [2025-01-09 02:58:30,324 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-01-09 02:58:30,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:30,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 02:58:30,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:30,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 55 proven. 126 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:30,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162646000] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:30,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:30,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2025-01-09 02:58:30,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584413576] [2025-01-09 02:58:30,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:30,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-01-09 02:58:30,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:30,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-01-09 02:58:30,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2025-01-09 02:58:30,518 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:30,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:30,615 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2025-01-09 02:58:30,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 02:58:30,615 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-01-09 02:58:30,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:30,616 INFO L225 Difference]: With dead ends: 55 [2025-01-09 02:58:30,616 INFO L226 Difference]: Without dead ends: 53 [2025-01-09 02:58:30,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 73 SyntacticMatches, 20 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2025-01-09 02:58:30,616 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:30,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:30,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-01-09 02:58:30,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2025-01-09 02:58:30,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.0434782608695652) internal successors, (48), 46 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2025-01-09 02:58:30,622 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 43 [2025-01-09 02:58:30,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:30,622 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2025-01-09 02:58:30,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:30,622 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2025-01-09 02:58:30,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-01-09 02:58:30,622 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:30,623 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 1, 1, 1, 1, 1] [2025-01-09 02:58:30,632 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-09 02:58:30,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:30,824 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:30,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:30,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1756414665, now seen corresponding path program 19 times [2025-01-09 02:58:30,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:30,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807436143] [2025-01-09 02:58:30,825 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:30,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:30,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-09 02:58:30,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-09 02:58:30,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:30,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:31,061 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 127 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:31,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:31,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807436143] [2025-01-09 02:58:31,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807436143] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:31,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087191997] [2025-01-09 02:58:31,062 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:31,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:31,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:31,066 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) [2025-01-09 02:58:31,067 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 [2025-01-09 02:58:31,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-01-09 02:58:31,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-01-09 02:58:31,112 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:31,112 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:31,112 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 02:58:31,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:31,378 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:31,574 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 155 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:31,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087191997] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:31,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:31,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 37 [2025-01-09 02:58:31,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98304190] [2025-01-09 02:58:31,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:31,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-09 02:58:31,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:31,575 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-09 02:58:31,576 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 02:58:31,576 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:31,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:31,638 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2025-01-09 02:58:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 02:58:31,638 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2025-01-09 02:58:31,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:31,638 INFO L225 Difference]: With dead ends: 84 [2025-01-09 02:58:31,638 INFO L226 Difference]: Without dead ends: 48 [2025-01-09 02:58:31,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 59 SyntacticMatches, 20 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=1017, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 02:58:31,639 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:31,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-01-09 02:58:31,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2025-01-09 02:58:31,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 47 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:31,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2025-01-09 02:58:31,641 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 46 [2025-01-09 02:58:31,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:31,641 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2025-01-09 02:58:31,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2025-01-09 02:58:31,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-01-09 02:58:31,641 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:31,642 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1, 1] [2025-01-09 02:58:31,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:31,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:31,846 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:31,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:31,846 INFO L85 PathProgramCache]: Analyzing trace with hash 175334313, now seen corresponding path program 20 times [2025-01-09 02:58:31,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:31,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778836538] [2025-01-09 02:58:31,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:31,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:31,850 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-01-09 02:58:31,854 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-01-09 02:58:31,854 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:31,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:32,003 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 55 proven. 166 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:32,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:32,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778836538] [2025-01-09 02:58:32,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778836538] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:32,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39183140] [2025-01-09 02:58:32,004 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:32,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:32,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:32,006 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) [2025-01-09 02:58:32,007 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 [2025-01-09 02:58:32,037 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-01-09 02:58:32,053 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-01-09 02:58:32,053 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:32,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:32,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 02:58:32,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:32,103 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:32,103 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 66 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:32,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39183140] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:32,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:32,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 17 [2025-01-09 02:58:32,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447761407] [2025-01-09 02:58:32,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:32,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 02:58:32,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:32,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 02:58:32,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2025-01-09 02:58:32,258 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:32,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:32,394 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2025-01-09 02:58:32,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 02:58:32,397 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2025-01-09 02:58:32,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:32,397 INFO L225 Difference]: With dead ends: 59 [2025-01-09 02:58:32,397 INFO L226 Difference]: Without dead ends: 57 [2025-01-09 02:58:32,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 79 SyntacticMatches, 23 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2025-01-09 02:58:32,403 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:32,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 20 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 02:58:32,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-01-09 02:58:32,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2025-01-09 02:58:32,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.04) internal successors, (52), 50 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:32,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2025-01-09 02:58:32,410 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 47 [2025-01-09 02:58:32,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:32,410 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2025-01-09 02:58:32,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:32,410 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2025-01-09 02:58:32,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-01-09 02:58:32,411 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:32,411 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 1, 1, 1, 1, 1] [2025-01-09 02:58:32,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:32,611 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,SelfDestructingSolverStorable21 [2025-01-09 02:58:32,611 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:32,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash 709095012, now seen corresponding path program 21 times [2025-01-09 02:58:32,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:32,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055827032] [2025-01-09 02:58:32,612 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:32,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:32,617 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 12 equivalence classes. [2025-01-09 02:58:32,634 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 02:58:32,634 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 02:58:32,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:32,938 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 156 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:32,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:32,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055827032] [2025-01-09 02:58:32,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055827032] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:32,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432620315] [2025-01-09 02:58:32,939 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:32,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:32,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:32,941 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) [2025-01-09 02:58:32,943 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 [2025-01-09 02:58:32,976 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 50 statements into 12 equivalence classes. [2025-01-09 02:58:32,996 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 50 of 50 statements. [2025-01-09 02:58:32,997 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-01-09 02:58:32,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:32,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 02:58:32,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:33,292 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:33,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 187 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432620315] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:33,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:33,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 40 [2025-01-09 02:58:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090232240] [2025-01-09 02:58:33,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:33,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-01-09 02:58:33,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:33,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-01-09 02:58:33,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 02:58:33,501 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:33,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:33,606 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2025-01-09 02:58:33,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-01-09 02:58:33,607 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-01-09 02:58:33,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:33,607 INFO L225 Difference]: With dead ends: 91 [2025-01-09 02:58:33,607 INFO L226 Difference]: Without dead ends: 52 [2025-01-09 02:58:33,608 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 64 SyntacticMatches, 22 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 818 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=367, Invalid=1193, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 02:58:33,608 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:33,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-01-09 02:58:33,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-01-09 02:58:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2025-01-09 02:58:33,612 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 50 [2025-01-09 02:58:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:33,612 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2025-01-09 02:58:33,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.275) internal successors, (91), 40 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:33,612 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2025-01-09 02:58:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-09 02:58:33,612 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:33,612 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1, 1] [2025-01-09 02:58:33,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:33,812 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,SelfDestructingSolverStorable22 [2025-01-09 02:58:33,813 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:33,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:33,813 INFO L85 PathProgramCache]: Analyzing trace with hash -167043260, now seen corresponding path program 22 times [2025-01-09 02:58:33,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:33,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656460890] [2025-01-09 02:58:33,813 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:33,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:33,818 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-01-09 02:58:33,823 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 02:58:33,823 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:33,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:33,996 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:33,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:33,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656460890] [2025-01-09 02:58:33,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656460890] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:33,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592656527] [2025-01-09 02:58:33,997 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:33,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:33,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:33,999 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) [2025-01-09 02:58:34,000 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 [2025-01-09 02:58:34,034 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 51 statements into 2 equivalence classes. [2025-01-09 02:58:34,051 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 02:58:34,051 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:34,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:34,052 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 02:58:34,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:34,102 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:34,102 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:34,257 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 78 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:34,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592656527] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:34,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:34,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 17 [2025-01-09 02:58:34,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142906444] [2025-01-09 02:58:34,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:34,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 02:58:34,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:34,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 02:58:34,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2025-01-09 02:58:34,258 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:34,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:34,359 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2025-01-09 02:58:34,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-09 02:58:34,360 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-01-09 02:58:34,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:34,360 INFO L225 Difference]: With dead ends: 63 [2025-01-09 02:58:34,360 INFO L226 Difference]: Without dead ends: 61 [2025-01-09 02:58:34,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 88 SyntacticMatches, 24 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=314, Invalid=498, Unknown=0, NotChecked=0, Total=812 [2025-01-09 02:58:34,360 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:34,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:34,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-09 02:58:34,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2025-01-09 02:58:34,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.037037037037037) internal successors, (56), 54 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:34,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2025-01-09 02:58:34,363 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 51 [2025-01-09 02:58:34,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:34,364 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2025-01-09 02:58:34,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 17 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:34,364 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2025-01-09 02:58:34,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-01-09 02:58:34,364 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:34,364 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 1, 1, 1, 1, 1] [2025-01-09 02:58:34,370 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 [2025-01-09 02:58:34,564 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,SelfDestructingSolverStorable23 [2025-01-09 02:58:34,565 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:34,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:34,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1486145769, now seen corresponding path program 23 times [2025-01-09 02:58:34,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:34,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992063252] [2025-01-09 02:58:34,565 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:34,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:34,571 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 13 equivalence classes. [2025-01-09 02:58:34,581 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 54 of 54 statements. [2025-01-09 02:58:34,581 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-01-09 02:58:34,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:34,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:34,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992063252] [2025-01-09 02:58:34,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992063252] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:34,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812977072] [2025-01-09 02:58:34,903 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:34,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:34,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:34,905 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) [2025-01-09 02:58:34,906 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 [2025-01-09 02:58:34,955 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 54 statements into 13 equivalence classes. [2025-01-09 02:58:34,980 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 54 of 54 statements. [2025-01-09 02:58:34,981 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-01-09 02:58:34,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:34,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 02:58:34,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:35,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 222 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:35,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812977072] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:35,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:35,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 41 [2025-01-09 02:58:35,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148130717] [2025-01-09 02:58:35,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:35,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-01-09 02:58:35,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:35,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-01-09 02:58:35,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=1236, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 02:58:35,547 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:35,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:35,665 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2025-01-09 02:58:35,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-01-09 02:58:35,667 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2025-01-09 02:58:35,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:35,667 INFO L225 Difference]: With dead ends: 98 [2025-01-09 02:58:35,667 INFO L226 Difference]: Without dead ends: 56 [2025-01-09 02:58:35,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 70 SyntacticMatches, 25 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=404, Invalid=1236, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 02:58:35,669 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:35,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:35,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-01-09 02:58:35,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-01-09 02:58:35,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:35,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2025-01-09 02:58:35,676 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 54 [2025-01-09 02:58:35,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:35,676 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2025-01-09 02:58:35,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:35,676 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2025-01-09 02:58:35,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-01-09 02:58:35,677 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:35,677 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1, 1] [2025-01-09 02:58:35,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-09 02:58:35,877 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,SelfDestructingSolverStorable24 [2025-01-09 02:58:35,877 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:35,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:35,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1718056503, now seen corresponding path program 24 times [2025-01-09 02:58:35,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:35,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982041240] [2025-01-09 02:58:35,878 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:35,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:35,883 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 55 statements into 13 equivalence classes. [2025-01-09 02:58:35,909 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 55 of 55 statements. [2025-01-09 02:58:35,910 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-01-09 02:58:35,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 78 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:36,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:36,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982041240] [2025-01-09 02:58:36,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982041240] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:36,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868160104] [2025-01-09 02:58:36,160 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:36,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:36,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:36,162 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) [2025-01-09 02:58:36,162 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 [2025-01-09 02:58:36,202 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 55 statements into 13 equivalence classes. [2025-01-09 02:58:36,243 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 55 of 55 statements. [2025-01-09 02:58:36,243 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-01-09 02:58:36,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:36,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 02:58:36,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:36,347 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:36,547 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 91 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:36,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868160104] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:36,548 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:36,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 19 [2025-01-09 02:58:36,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828859487] [2025-01-09 02:58:36,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:36,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 02:58:36,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:36,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 02:58:36,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2025-01-09 02:58:36,549 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:36,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:36,695 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2025-01-09 02:58:36,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 02:58:36,696 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-01-09 02:58:36,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:36,697 INFO L225 Difference]: With dead ends: 67 [2025-01-09 02:58:36,697 INFO L226 Difference]: Without dead ends: 65 [2025-01-09 02:58:36,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 94 SyntacticMatches, 26 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2025-01-09 02:58:36,698 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:36,698 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:36,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-01-09 02:58:36,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2025-01-09 02:58:36,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2025-01-09 02:58:36,703 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 55 [2025-01-09 02:58:36,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:36,703 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2025-01-09 02:58:36,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 19 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2025-01-09 02:58:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-01-09 02:58:36,703 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:36,703 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 1, 1, 1, 1, 1] [2025-01-09 02:58:36,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-01-09 02:58:36,908 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,SelfDestructingSolverStorable25 [2025-01-09 02:58:36,908 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:36,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:36,908 INFO L85 PathProgramCache]: Analyzing trace with hash 508793924, now seen corresponding path program 25 times [2025-01-09 02:58:36,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:36,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358093416] [2025-01-09 02:58:36,908 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:36,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:36,913 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-01-09 02:58:36,917 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 02:58:36,917 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:36,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 223 proven. 128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:37,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:37,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358093416] [2025-01-09 02:58:37,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358093416] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082422788] [2025-01-09 02:58:37,263 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:37,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:37,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:37,266 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) [2025-01-09 02:58:37,267 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 [2025-01-09 02:58:37,304 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-01-09 02:58:37,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 02:58:37,324 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:37,324 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:37,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 02:58:37,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:37,682 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:38,207 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 260 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:38,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082422788] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:38,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:38,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 46 [2025-01-09 02:58:38,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180457178] [2025-01-09 02:58:38,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:38,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 02:58:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:38,208 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 02:58:38,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1587, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 02:58:38,209 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:38,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:38,299 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2025-01-09 02:58:38,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2025-01-09 02:58:38,299 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-01-09 02:58:38,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:38,300 INFO L225 Difference]: With dead ends: 105 [2025-01-09 02:58:38,300 INFO L226 Difference]: Without dead ends: 60 [2025-01-09 02:58:38,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 74 SyntacticMatches, 26 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=483, Invalid=1587, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 02:58:38,301 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:38,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:38,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-01-09 02:58:38,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-01-09 02:58:38,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2025-01-09 02:58:38,303 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 58 [2025-01-09 02:58:38,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:38,303 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2025-01-09 02:58:38,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.282608695652174) internal successors, (105), 46 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:38,303 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2025-01-09 02:58:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-01-09 02:58:38,303 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:38,303 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1, 1] [2025-01-09 02:58:38,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-01-09 02:58:38,504 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,SelfDestructingSolverStorable26 [2025-01-09 02:58:38,505 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:38,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:38,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1010047708, now seen corresponding path program 26 times [2025-01-09 02:58:38,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247545556] [2025-01-09 02:58:38,505 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:38,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:38,509 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-01-09 02:58:38,514 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-01-09 02:58:38,515 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:38,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:38,808 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 91 proven. 274 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247545556] [2025-01-09 02:58:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247545556] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328183809] [2025-01-09 02:58:38,809 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:38,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:38,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:38,811 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) [2025-01-09 02:58:38,812 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 [2025-01-09 02:58:38,848 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 59 statements into 2 equivalence classes. [2025-01-09 02:58:38,867 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 59 of 59 statements. [2025-01-09 02:58:38,867 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:38,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:38,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-09 02:58:38,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:38,935 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 105 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:39,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328183809] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:39,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:39,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 20 [2025-01-09 02:58:39,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510197496] [2025-01-09 02:58:39,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:39,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 02:58:39,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:39,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 02:58:39,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=236, Unknown=0, NotChecked=0, Total=380 [2025-01-09 02:58:39,168 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:39,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:39,310 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2025-01-09 02:58:39,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 02:58:39,311 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-01-09 02:58:39,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:39,311 INFO L225 Difference]: With dead ends: 71 [2025-01-09 02:58:39,311 INFO L226 Difference]: Without dead ends: 69 [2025-01-09 02:58:39,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 100 SyntacticMatches, 29 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 02:58:39,312 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:39,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:39,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-01-09 02:58:39,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2025-01-09 02:58:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.032258064516129) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2025-01-09 02:58:39,315 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 59 [2025-01-09 02:58:39,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:39,315 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2025-01-09 02:58:39,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:39,315 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2025-01-09 02:58:39,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-01-09 02:58:39,315 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:39,315 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 1, 1, 1, 1, 1] [2025-01-09 02:58:39,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:39,520 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,SelfDestructingSolverStorable27 [2025-01-09 02:58:39,520 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:39,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:39,520 INFO L85 PathProgramCache]: Analyzing trace with hash 214415113, now seen corresponding path program 27 times [2025-01-09 02:58:39,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:39,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160378500] [2025-01-09 02:58:39,520 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:39,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:39,525 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 15 equivalence classes. [2025-01-09 02:58:39,540 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 62 of 62 statements. [2025-01-09 02:58:39,540 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-01-09 02:58:39,541 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 261 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:39,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:39,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160378500] [2025-01-09 02:58:39,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160378500] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:39,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810493784] [2025-01-09 02:58:39,928 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:39,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:39,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:39,930 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) [2025-01-09 02:58:39,932 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 [2025-01-09 02:58:39,971 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 15 equivalence classes. [2025-01-09 02:58:40,001 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 62 of 62 statements. [2025-01-09 02:58:40,001 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-01-09 02:58:40,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:40,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-01-09 02:58:40,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:40,423 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:40,423 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 301 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:40,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810493784] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:40,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:40,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 49 [2025-01-09 02:58:40,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444600845] [2025-01-09 02:58:40,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:40,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-01-09 02:58:40,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:40,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-01-09 02:58:40,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=1805, Unknown=0, NotChecked=0, Total=2352 [2025-01-09 02:58:40,736 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:40,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:40,849 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2025-01-09 02:58:40,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 02:58:40,849 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-01-09 02:58:40,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:40,850 INFO L225 Difference]: With dead ends: 112 [2025-01-09 02:58:40,850 INFO L226 Difference]: Without dead ends: 64 [2025-01-09 02:58:40,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 79 SyntacticMatches, 28 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=547, Invalid=1805, Unknown=0, NotChecked=0, Total=2352 [2025-01-09 02:58:40,854 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:40,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:40,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-01-09 02:58:40,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2025-01-09 02:58:40,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:40,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2025-01-09 02:58:40,857 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 62 [2025-01-09 02:58:40,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:40,858 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2025-01-09 02:58:40,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.2857142857142856) internal successors, (112), 49 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:40,858 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2025-01-09 02:58:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-01-09 02:58:40,858 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:40,858 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1, 1] [2025-01-09 02:58:40,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:41,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-01-09 02:58:41,062 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:41,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:41,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1444112407, now seen corresponding path program 28 times [2025-01-09 02:58:41,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:41,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532740296] [2025-01-09 02:58:41,063 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:41,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:41,067 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 63 statements into 2 equivalence classes. [2025-01-09 02:58:41,075 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-01-09 02:58:41,075 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:41,075 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:41,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:41,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532740296] [2025-01-09 02:58:41,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532740296] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:41,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235303359] [2025-01-09 02:58:41,295 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:41,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:41,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:41,297 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) [2025-01-09 02:58:41,298 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 [2025-01-09 02:58:41,337 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 63 statements into 2 equivalence classes. [2025-01-09 02:58:41,358 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 63 of 63 statements. [2025-01-09 02:58:41,359 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:41,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:41,360 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 02:58:41,361 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:41,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:41,643 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 120 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:41,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235303359] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:41,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:41,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 20 [2025-01-09 02:58:41,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220796296] [2025-01-09 02:58:41,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:41,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 02:58:41,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:41,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 02:58:41,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=222, Unknown=0, NotChecked=0, Total=380 [2025-01-09 02:58:41,644 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:41,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:41,788 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2025-01-09 02:58:41,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-09 02:58:41,789 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-01-09 02:58:41,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:41,789 INFO L225 Difference]: With dead ends: 75 [2025-01-09 02:58:41,789 INFO L226 Difference]: Without dead ends: 73 [2025-01-09 02:58:41,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 109 SyntacticMatches, 30 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=458, Invalid=732, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 02:58:41,790 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:41,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:41,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-01-09 02:58:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2025-01-09 02:58:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2025-01-09 02:58:41,793 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 63 [2025-01-09 02:58:41,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:41,794 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2025-01-09 02:58:41,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:41,794 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2025-01-09 02:58:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-01-09 02:58:41,794 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:41,794 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1] [2025-01-09 02:58:41,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:41,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:41,999 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:41,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1139495460, now seen corresponding path program 29 times [2025-01-09 02:58:42,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:42,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132387142] [2025-01-09 02:58:42,000 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:42,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:42,004 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 66 statements into 16 equivalence classes. [2025-01-09 02:58:42,019 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 02:58:42,019 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-01-09 02:58:42,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:42,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:42,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132387142] [2025-01-09 02:58:42,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132387142] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:42,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503757225] [2025-01-09 02:58:42,420 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:42,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:42,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:42,422 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:42,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-01-09 02:58:42,473 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 66 statements into 16 equivalence classes. [2025-01-09 02:58:42,503 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) and asserted 66 of 66 statements. [2025-01-09 02:58:42,503 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2025-01-09 02:58:42,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:42,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-01-09 02:58:42,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:42,957 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:42,958 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 345 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:43,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503757225] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:43,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:43,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 50 [2025-01-09 02:58:43,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098255835] [2025-01-09 02:58:43,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:43,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2025-01-09 02:58:43,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:43,299 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2025-01-09 02:58:43,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=1857, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 02:58:43,299 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:43,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:43,405 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2025-01-09 02:58:43,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-01-09 02:58:43,406 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-01-09 02:58:43,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:43,406 INFO L225 Difference]: With dead ends: 119 [2025-01-09 02:58:43,406 INFO L226 Difference]: Without dead ends: 68 [2025-01-09 02:58:43,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 85 SyntacticMatches, 31 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=593, Invalid=1857, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 02:58:43,408 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:43,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 110 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:43,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-01-09 02:58:43,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-01-09 02:58:43,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:43,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2025-01-09 02:58:43,413 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 66 [2025-01-09 02:58:43,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:43,413 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2025-01-09 02:58:43,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:43,413 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2025-01-09 02:58:43,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2025-01-09 02:58:43,414 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:43,414 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1, 1] [2025-01-09 02:58:43,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:43,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-01-09 02:58:43,618 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:43,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:43,618 INFO L85 PathProgramCache]: Analyzing trace with hash 267698948, now seen corresponding path program 30 times [2025-01-09 02:58:43,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:43,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800763831] [2025-01-09 02:58:43,619 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:43,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:43,623 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 67 statements into 16 equivalence classes. [2025-01-09 02:58:43,632 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 67 of 67 statements. [2025-01-09 02:58:43,633 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-01-09 02:58:43,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 120 proven. 361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:43,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:43,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800763831] [2025-01-09 02:58:43,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800763831] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:43,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425349201] [2025-01-09 02:58:43,864 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:43,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:43,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:43,866 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:43,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-01-09 02:58:43,947 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 67 statements into 16 equivalence classes. [2025-01-09 02:58:43,998 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) and asserted 67 of 67 statements. [2025-01-09 02:58:43,998 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2025-01-09 02:58:43,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:44,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-09 02:58:44,010 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:44,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:44,382 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 136 proven. 345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:44,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425349201] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:44,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:44,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 22 [2025-01-09 02:58:44,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387616974] [2025-01-09 02:58:44,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:44,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-01-09 02:58:44,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:44,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-01-09 02:58:44,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=283, Unknown=0, NotChecked=0, Total=462 [2025-01-09 02:58:44,384 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:44,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:44,641 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2025-01-09 02:58:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-09 02:58:44,645 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2025-01-09 02:58:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:44,645 INFO L225 Difference]: With dead ends: 79 [2025-01-09 02:58:44,645 INFO L226 Difference]: Without dead ends: 77 [2025-01-09 02:58:44,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 115 SyntacticMatches, 32 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 02:58:44,646 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:44,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:44,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-01-09 02:58:44,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2025-01-09 02:58:44,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 70 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2025-01-09 02:58:44,654 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 67 [2025-01-09 02:58:44,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:44,654 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2025-01-09 02:58:44,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.227272727272727) internal successors, (71), 22 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:44,654 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2025-01-09 02:58:44,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-01-09 02:58:44,654 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:44,654 INFO L218 NwaCegarLoop]: trace histogram [17, 16, 16, 16, 1, 1, 1, 1, 1] [2025-01-09 02:58:44,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-01-09 02:58:44,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:44,860 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:44,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:44,861 INFO L85 PathProgramCache]: Analyzing trace with hash -730100439, now seen corresponding path program 31 times [2025-01-09 02:58:44,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:44,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236542559] [2025-01-09 02:58:44,861 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:44,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:44,873 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-09 02:58:44,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 02:58:44,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:44,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 346 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:45,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236542559] [2025-01-09 02:58:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236542559] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380728620] [2025-01-09 02:58:45,348 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:45,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:45,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:45,350 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:45,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-01-09 02:58:45,397 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-01-09 02:58:45,417 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-01-09 02:58:45,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:45,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:45,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-01-09 02:58:45,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:45,838 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:45,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 392 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:46,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380728620] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:46,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:46,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 55 [2025-01-09 02:58:46,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942324515] [2025-01-09 02:58:46,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:46,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-01-09 02:58:46,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:46,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-01-09 02:58:46,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=687, Invalid=2283, Unknown=0, NotChecked=0, Total=2970 [2025-01-09 02:58:46,139 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:46,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:46,235 INFO L93 Difference]: Finished difference Result 126 states and 128 transitions. [2025-01-09 02:58:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-01-09 02:58:46,236 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-01-09 02:58:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:46,236 INFO L225 Difference]: With dead ends: 126 [2025-01-09 02:58:46,236 INFO L226 Difference]: Without dead ends: 72 [2025-01-09 02:58:46,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 89 SyntacticMatches, 32 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1593 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=687, Invalid=2283, Unknown=0, NotChecked=0, Total=2970 [2025-01-09 02:58:46,237 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:46,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 157 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:46,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-01-09 02:58:46,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2025-01-09 02:58:46,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.028169014084507) internal successors, (73), 71 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:46,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2025-01-09 02:58:46,240 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 70 [2025-01-09 02:58:46,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:46,240 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2025-01-09 02:58:46,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.290909090909091) internal successors, (126), 55 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:46,240 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2025-01-09 02:58:46,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-01-09 02:58:46,241 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:46,241 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1, 1] [2025-01-09 02:58:46,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:46,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-01-09 02:58:46,441 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:46,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:46,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1432252919, now seen corresponding path program 32 times [2025-01-09 02:58:46,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:46,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955238262] [2025-01-09 02:58:46,442 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:46,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:46,448 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-01-09 02:58:46,453 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 02:58:46,454 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:46,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 136 proven. 409 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:46,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955238262] [2025-01-09 02:58:46,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955238262] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:46,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346975350] [2025-01-09 02:58:46,685 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:46,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:46,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:46,690 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:46,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-01-09 02:58:46,737 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-01-09 02:58:46,761 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-01-09 02:58:46,761 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:46,761 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:46,763 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-01-09 02:58:46,764 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:46,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 153 proven. 392 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:47,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346975350] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:47,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:47,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 23 [2025-01-09 02:58:47,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595779305] [2025-01-09 02:58:47,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:47,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 02:58:47,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:47,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 02:58:47,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2025-01-09 02:58:47,124 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:47,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:47,309 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2025-01-09 02:58:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-09 02:58:47,309 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2025-01-09 02:58:47,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:47,310 INFO L225 Difference]: With dead ends: 83 [2025-01-09 02:58:47,310 INFO L226 Difference]: Without dead ends: 81 [2025-01-09 02:58:47,310 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 121 SyntacticMatches, 35 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2025-01-09 02:58:47,311 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:47,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 27 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:47,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-01-09 02:58:47,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2025-01-09 02:58:47,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.027027027027027) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:47,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2025-01-09 02:58:47,317 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 71 [2025-01-09 02:58:47,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:47,317 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2025-01-09 02:58:47,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:47,318 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2025-01-09 02:58:47,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2025-01-09 02:58:47,318 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:47,318 INFO L218 NwaCegarLoop]: trace histogram [18, 17, 17, 17, 1, 1, 1, 1, 1] [2025-01-09 02:58:47,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-01-09 02:58:47,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:47,518 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:47,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:47,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2036783100, now seen corresponding path program 33 times [2025-01-09 02:58:47,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:47,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460084883] [2025-01-09 02:58:47,519 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:47,525 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 74 statements into 18 equivalence classes. [2025-01-09 02:58:47,548 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 74 of 74 statements. [2025-01-09 02:58:47,548 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-01-09 02:58:47,548 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:48,027 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 393 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:48,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:48,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460084883] [2025-01-09 02:58:48,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460084883] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:48,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510499022] [2025-01-09 02:58:48,028 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:48,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:48,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:48,032 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:48,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-01-09 02:58:48,082 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 74 statements into 18 equivalence classes. [2025-01-09 02:58:48,118 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 74 of 74 statements. [2025-01-09 02:58:48,119 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-01-09 02:58:48,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:48,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-01-09 02:58:48,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:48,689 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:48,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:49,036 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 442 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:49,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510499022] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:49,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:49,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 58 [2025-01-09 02:58:49,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514685559] [2025-01-09 02:58:49,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:49,037 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-01-09 02:58:49,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:49,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-01-09 02:58:49,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=2543, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 02:58:49,038 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 58 states, 58 states have (on average 2.293103448275862) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:49,147 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2025-01-09 02:58:49,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-01-09 02:58:49,147 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.293103448275862) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2025-01-09 02:58:49,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:49,148 INFO L225 Difference]: With dead ends: 133 [2025-01-09 02:58:49,148 INFO L226 Difference]: Without dead ends: 76 [2025-01-09 02:58:49,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 94 SyntacticMatches, 34 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1778 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=763, Invalid=2543, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 02:58:49,149 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:49,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:49,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-01-09 02:58:49,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2025-01-09 02:58:49,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:49,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2025-01-09 02:58:49,152 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 74 [2025-01-09 02:58:49,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:49,152 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2025-01-09 02:58:49,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.293103448275862) internal successors, (133), 58 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:49,152 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2025-01-09 02:58:49,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2025-01-09 02:58:49,153 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:49,153 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1, 1] [2025-01-09 02:58:49,160 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-01-09 02:58:49,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:49,357 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:49,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash -434915100, now seen corresponding path program 34 times [2025-01-09 02:58:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:49,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480725895] [2025-01-09 02:58:49,357 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:49,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:49,362 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 75 statements into 2 equivalence classes. [2025-01-09 02:58:49,369 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-01-09 02:58:49,370 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:49,370 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:49,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:49,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480725895] [2025-01-09 02:58:49,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480725895] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:49,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794618522] [2025-01-09 02:58:49,685 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:49,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:49,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:49,687 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:49,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-01-09 02:58:49,734 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 75 statements into 2 equivalence classes. [2025-01-09 02:58:49,760 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 75 of 75 statements. [2025-01-09 02:58:49,760 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:49,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:49,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-09 02:58:49,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:49,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 171 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:50,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794618522] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:50,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:50,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 23 [2025-01-09 02:58:50,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954844345] [2025-01-09 02:58:50,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:50,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 02:58:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:50,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 02:58:50,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=291, Unknown=0, NotChecked=0, Total=506 [2025-01-09 02:58:50,144 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:50,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:50,329 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2025-01-09 02:58:50,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-01-09 02:58:50,330 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2025-01-09 02:58:50,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:50,331 INFO L225 Difference]: With dead ends: 87 [2025-01-09 02:58:50,331 INFO L226 Difference]: Without dead ends: 85 [2025-01-09 02:58:50,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 129 SyntacticMatches, 37 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 667 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=629, Invalid=1011, Unknown=0, NotChecked=0, Total=1640 [2025-01-09 02:58:50,332 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:50,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 24 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:50,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-01-09 02:58:50,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2025-01-09 02:58:50,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 78 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:50,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2025-01-09 02:58:50,336 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 75 [2025-01-09 02:58:50,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:50,336 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2025-01-09 02:58:50,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 23 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:50,336 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2025-01-09 02:58:50,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-01-09 02:58:50,336 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:50,337 INFO L218 NwaCegarLoop]: trace histogram [19, 18, 18, 18, 1, 1, 1, 1, 1] [2025-01-09 02:58:50,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2025-01-09 02:58:50,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-01-09 02:58:50,541 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:50,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:50,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1365396297, now seen corresponding path program 35 times [2025-01-09 02:58:50,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:50,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581645056] [2025-01-09 02:58:50,542 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:50,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:50,547 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 78 statements into 19 equivalence classes. [2025-01-09 02:58:50,573 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) and asserted 78 of 78 statements. [2025-01-09 02:58:50,574 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2025-01-09 02:58:50,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:51,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:51,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581645056] [2025-01-09 02:58:51,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581645056] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:51,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272463678] [2025-01-09 02:58:51,127 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:58:51,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:51,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:51,129 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:51,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-01-09 02:58:51,191 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 78 statements into 19 equivalence classes. [2025-01-09 02:58:51,228 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) and asserted 78 of 78 statements. [2025-01-09 02:58:51,228 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2025-01-09 02:58:51,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:51,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-01-09 02:58:51,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:51,836 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:51,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 495 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:52,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272463678] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:52,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:52,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 59 [2025-01-09 02:58:52,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793516215] [2025-01-09 02:58:52,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:52,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-01-09 02:58:52,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:52,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-01-09 02:58:52,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=818, Invalid=2604, Unknown=0, NotChecked=0, Total=3422 [2025-01-09 02:58:52,290 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:52,441 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions. [2025-01-09 02:58:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-01-09 02:58:52,442 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2025-01-09 02:58:52,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:52,442 INFO L225 Difference]: With dead ends: 140 [2025-01-09 02:58:52,442 INFO L226 Difference]: Without dead ends: 80 [2025-01-09 02:58:52,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 100 SyntacticMatches, 37 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1692 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=818, Invalid=2604, Unknown=0, NotChecked=0, Total=3422 [2025-01-09 02:58:52,443 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:52,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 200 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:52,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-01-09 02:58:52,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2025-01-09 02:58:52,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:52,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2025-01-09 02:58:52,447 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 78 [2025-01-09 02:58:52,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:52,447 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2025-01-09 02:58:52,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.2711864406779663) internal successors, (134), 59 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:52,448 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2025-01-09 02:58:52,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-01-09 02:58:52,448 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:52,448 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1, 1] [2025-01-09 02:58:52,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:52,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-01-09 02:58:52,649 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:52,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:52,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1567190057, now seen corresponding path program 36 times [2025-01-09 02:58:52,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:52,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123005105] [2025-01-09 02:58:52,650 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:52,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:52,655 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 79 statements into 19 equivalence classes. [2025-01-09 02:58:52,684 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 02:58:52,684 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-01-09 02:58:52,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 171 proven. 514 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:53,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123005105] [2025-01-09 02:58:53,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123005105] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:53,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139337347] [2025-01-09 02:58:53,070 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:58:53,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:53,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:53,077 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:53,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-01-09 02:58:53,130 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 79 statements into 19 equivalence classes. [2025-01-09 02:58:53,163 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 79 of 79 statements. [2025-01-09 02:58:53,163 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-01-09 02:58:53,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:53,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-01-09 02:58:53,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:53,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:53,490 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 190 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:53,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139337347] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:53,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:53,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 25 [2025-01-09 02:58:53,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465121073] [2025-01-09 02:58:53,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:53,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 02:58:53,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:53,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 02:58:53,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=361, Unknown=0, NotChecked=0, Total=600 [2025-01-09 02:58:53,493 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 25 states, 25 states have (on average 3.32) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:53,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:53,672 INFO L93 Difference]: Finished difference Result 91 states and 92 transitions. [2025-01-09 02:58:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-01-09 02:58:53,673 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2025-01-09 02:58:53,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:53,673 INFO L225 Difference]: With dead ends: 91 [2025-01-09 02:58:53,673 INFO L226 Difference]: Without dead ends: 89 [2025-01-09 02:58:53,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 136 SyntacticMatches, 38 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 02:58:53,675 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:53,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:53,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-01-09 02:58:53,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2025-01-09 02:58:53,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.024390243902439) internal successors, (84), 82 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2025-01-09 02:58:53,680 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 79 [2025-01-09 02:58:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:53,680 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2025-01-09 02:58:53,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.32) internal successors, (83), 25 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:53,680 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2025-01-09 02:58:53,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-01-09 02:58:53,680 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:53,680 INFO L218 NwaCegarLoop]: trace histogram [20, 19, 19, 19, 1, 1, 1, 1, 1] [2025-01-09 02:58:53,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:53,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,38 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:53,881 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:53,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:53,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1869288932, now seen corresponding path program 37 times [2025-01-09 02:58:53,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:53,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896802191] [2025-01-09 02:58:53,881 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:53,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:53,886 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-01-09 02:58:53,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-01-09 02:58:53,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:53,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 496 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:54,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896802191] [2025-01-09 02:58:54,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896802191] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664376791] [2025-01-09 02:58:54,386 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:58:54,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:54,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:54,388 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:54,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2025-01-09 02:58:54,442 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 82 statements into 1 equivalence classes. [2025-01-09 02:58:54,466 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 82 of 82 statements. [2025-01-09 02:58:54,466 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:58:54,466 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:54,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-01-09 02:58:54,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:55,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 551 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:55,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664376791] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:55,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:55,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 64 [2025-01-09 02:58:55,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910976828] [2025-01-09 02:58:55,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:55,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-01-09 02:58:55,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:55,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-01-09 02:58:55,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=927, Invalid=3105, Unknown=0, NotChecked=0, Total=4032 [2025-01-09 02:58:55,544 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand has 64 states, 64 states have (on average 2.296875) internal successors, (147), 64 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:55,734 INFO L93 Difference]: Finished difference Result 147 states and 149 transitions. [2025-01-09 02:58:55,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-01-09 02:58:55,734 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.296875) internal successors, (147), 64 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2025-01-09 02:58:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:55,735 INFO L225 Difference]: With dead ends: 147 [2025-01-09 02:58:55,735 INFO L226 Difference]: Without dead ends: 84 [2025-01-09 02:58:55,735 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 104 SyntacticMatches, 38 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2178 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=927, Invalid=3105, Unknown=0, NotChecked=0, Total=4032 [2025-01-09 02:58:55,736 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:55,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 237 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:58:55,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-01-09 02:58:55,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2025-01-09 02:58:55,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 83 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:55,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2025-01-09 02:58:55,742 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 82 [2025-01-09 02:58:55,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:55,743 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2025-01-09 02:58:55,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.296875) internal successors, (147), 64 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:55,743 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2025-01-09 02:58:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2025-01-09 02:58:55,743 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:55,743 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1, 1] [2025-01-09 02:58:55,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:55,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-01-09 02:58:55,948 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:55,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:55,949 INFO L85 PathProgramCache]: Analyzing trace with hash -281622844, now seen corresponding path program 38 times [2025-01-09 02:58:55,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:55,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441154481] [2025-01-09 02:58:55,949 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:55,955 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 83 statements into 2 equivalence classes. [2025-01-09 02:58:55,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 83 of 83 statements. [2025-01-09 02:58:55,965 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:55,965 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 190 proven. 571 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:56,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:56,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441154481] [2025-01-09 02:58:56,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441154481] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:56,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897397506] [2025-01-09 02:58:56,317 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:58:56,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:56,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:56,319 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:56,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2025-01-09 02:58:56,373 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 83 statements into 2 equivalence classes. [2025-01-09 02:58:56,400 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 83 of 83 statements. [2025-01-09 02:58:56,400 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:58:56,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:56,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-01-09 02:58:56,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:56,481 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:56,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 210 proven. 551 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:56,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897397506] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:56,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:56,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 26 [2025-01-09 02:58:56,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120400131] [2025-01-09 02:58:56,852 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:56,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 02:58:56,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:56,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 02:58:56,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=389, Unknown=0, NotChecked=0, Total=650 [2025-01-09 02:58:56,852 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:57,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:57,073 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2025-01-09 02:58:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-01-09 02:58:57,073 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2025-01-09 02:58:57,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:57,074 INFO L225 Difference]: With dead ends: 95 [2025-01-09 02:58:57,074 INFO L226 Difference]: Without dead ends: 93 [2025-01-09 02:58:57,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 142 SyntacticMatches, 41 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=761, Invalid=1309, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 02:58:57,075 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:57,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:58:57,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-01-09 02:58:57,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2025-01-09 02:58:57,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.0232558139534884) internal successors, (88), 86 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:57,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2025-01-09 02:58:57,079 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 83 [2025-01-09 02:58:57,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:57,079 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2025-01-09 02:58:57,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3461538461538463) internal successors, (87), 26 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:57,079 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2025-01-09 02:58:57,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-01-09 02:58:57,079 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:57,080 INFO L218 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 1, 1, 1, 1, 1] [2025-01-09 02:58:57,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2025-01-09 02:58:57,284 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-01-09 02:58:57,284 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:57,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:57,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1750208151, now seen corresponding path program 39 times [2025-01-09 02:58:57,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:57,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422205993] [2025-01-09 02:58:57,285 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:57,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:57,290 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 86 statements into 21 equivalence classes. [2025-01-09 02:58:57,302 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) and asserted 86 of 86 statements. [2025-01-09 02:58:57,302 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2025-01-09 02:58:57,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:57,961 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 552 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:57,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:58:57,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422205993] [2025-01-09 02:58:57,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422205993] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:58:57,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401616636] [2025-01-09 02:58:57,961 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:58:57,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:58:57,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:58:57,967 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:58:57,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2025-01-09 02:58:58,026 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 86 statements into 21 equivalence classes. [2025-01-09 02:58:58,067 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) and asserted 86 of 86 statements. [2025-01-09 02:58:58,067 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2025-01-09 02:58:58,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:58:58,069 INFO L256 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-01-09 02:58:58,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:58:58,838 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:58,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:58:59,294 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 610 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:58:59,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401616636] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:58:59,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:58:59,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 67 [2025-01-09 02:58:59,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101903315] [2025-01-09 02:58:59,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:58:59,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2025-01-09 02:58:59,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:58:59,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2025-01-09 02:58:59,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1015, Invalid=3407, Unknown=0, NotChecked=0, Total=4422 [2025-01-09 02:58:59,296 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand has 67 states, 67 states have (on average 2.298507462686567) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:59,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:58:59,474 INFO L93 Difference]: Finished difference Result 154 states and 156 transitions. [2025-01-09 02:58:59,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-01-09 02:58:59,475 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.298507462686567) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2025-01-09 02:58:59,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:58:59,475 INFO L225 Difference]: With dead ends: 154 [2025-01-09 02:58:59,475 INFO L226 Difference]: Without dead ends: 88 [2025-01-09 02:58:59,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 109 SyntacticMatches, 40 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2393 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1015, Invalid=3407, Unknown=0, NotChecked=0, Total=4422 [2025-01-09 02:58:59,476 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:58:59,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:58:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2025-01-09 02:58:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2025-01-09 02:58:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2025-01-09 02:58:59,482 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 86 [2025-01-09 02:58:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:58:59,482 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2025-01-09 02:58:59,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.298507462686567) internal successors, (154), 67 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:58:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2025-01-09 02:58:59,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2025-01-09 02:58:59,482 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:58:59,482 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1, 1] [2025-01-09 02:58:59,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2025-01-09 02:58:59,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2025-01-09 02:58:59,683 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:58:59,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:58:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash -160026039, now seen corresponding path program 40 times [2025-01-09 02:58:59,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:58:59,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490759600] [2025-01-09 02:58:59,683 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:58:59,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:58:59,688 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 87 statements into 2 equivalence classes. [2025-01-09 02:58:59,696 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-01-09 02:58:59,696 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:58:59,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:00,021 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:00,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:00,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490759600] [2025-01-09 02:59:00,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490759600] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:00,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270294057] [2025-01-09 02:59:00,022 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:59:00,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:00,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:00,025 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:00,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2025-01-09 02:59:00,084 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 87 statements into 2 equivalence classes. [2025-01-09 02:59:00,112 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 87 of 87 statements. [2025-01-09 02:59:00,113 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:59:00,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:00,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-01-09 02:59:00,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:00,187 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:00,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 231 proven. 610 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:00,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270294057] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:00,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:00,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 26 [2025-01-09 02:59:00,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053825451] [2025-01-09 02:59:00,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:00,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-09 02:59:00,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:00,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-09 02:59:00,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2025-01-09 02:59:00,497 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:00,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:00,740 INFO L93 Difference]: Finished difference Result 99 states and 100 transitions. [2025-01-09 02:59:00,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-01-09 02:59:00,740 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2025-01-09 02:59:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:00,741 INFO L225 Difference]: With dead ends: 99 [2025-01-09 02:59:00,741 INFO L226 Difference]: Without dead ends: 97 [2025-01-09 02:59:00,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 151 SyntacticMatches, 42 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 883 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=827, Invalid=1335, Unknown=0, NotChecked=0, Total=2162 [2025-01-09 02:59:00,742 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:00,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 29 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-01-09 02:59:00,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91. [2025-01-09 02:59:00,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 90 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2025-01-09 02:59:00,747 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 87 [2025-01-09 02:59:00,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:00,747 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2025-01-09 02:59:00,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:00,747 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2025-01-09 02:59:00,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-01-09 02:59:00,748 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:00,748 INFO L218 NwaCegarLoop]: trace histogram [22, 21, 21, 21, 1, 1, 1, 1, 1] [2025-01-09 02:59:00,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:00,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:00,949 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:00,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:00,949 INFO L85 PathProgramCache]: Analyzing trace with hash 82779076, now seen corresponding path program 41 times [2025-01-09 02:59:00,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:00,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264352439] [2025-01-09 02:59:00,950 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:59:00,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:00,955 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 90 statements into 22 equivalence classes. [2025-01-09 02:59:00,967 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) and asserted 90 of 90 statements. [2025-01-09 02:59:00,967 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2025-01-09 02:59:00,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:01,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:01,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264352439] [2025-01-09 02:59:01,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264352439] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:01,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973375600] [2025-01-09 02:59:01,656 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:59:01,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:01,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:01,658 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:01,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2025-01-09 02:59:01,717 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 90 statements into 22 equivalence classes. [2025-01-09 02:59:01,756 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) and asserted 90 of 90 statements. [2025-01-09 02:59:01,756 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2025-01-09 02:59:01,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:01,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-01-09 02:59:01,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:02,499 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 672 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:02,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973375600] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:02,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:02,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46, 46] total 68 [2025-01-09 02:59:02,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310750090] [2025-01-09 02:59:02,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:02,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2025-01-09 02:59:02,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:02,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2025-01-09 02:59:02,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1079, Invalid=3477, Unknown=0, NotChecked=0, Total=4556 [2025-01-09 02:59:02,999 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:03,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:03,143 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2025-01-09 02:59:03,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-01-09 02:59:03,144 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-01-09 02:59:03,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:03,144 INFO L225 Difference]: With dead ends: 161 [2025-01-09 02:59:03,144 INFO L226 Difference]: Without dead ends: 92 [2025-01-09 02:59:03,145 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 115 SyntacticMatches, 43 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2289 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1079, Invalid=3477, Unknown=0, NotChecked=0, Total=4556 [2025-01-09 02:59:03,145 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:03,145 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:03,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-01-09 02:59:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2025-01-09 02:59:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:03,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2025-01-09 02:59:03,156 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 90 [2025-01-09 02:59:03,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:03,158 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2025-01-09 02:59:03,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.2794117647058822) internal successors, (155), 68 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:03,158 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2025-01-09 02:59:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-01-09 02:59:03,158 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:03,158 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1, 1] [2025-01-09 02:59:03,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2025-01-09 02:59:03,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2025-01-09 02:59:03,360 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:03,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:03,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1374416036, now seen corresponding path program 42 times [2025-01-09 02:59:03,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:03,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344030807] [2025-01-09 02:59:03,361 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:59:03,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:03,384 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 91 statements into 22 equivalence classes. [2025-01-09 02:59:03,406 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 91 of 91 statements. [2025-01-09 02:59:03,412 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-01-09 02:59:03,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 231 proven. 694 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:03,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344030807] [2025-01-09 02:59:03,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344030807] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:03,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878056953] [2025-01-09 02:59:03,786 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:59:03,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:03,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:03,788 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:03,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2025-01-09 02:59:03,851 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 91 statements into 22 equivalence classes. [2025-01-09 02:59:03,895 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) and asserted 91 of 91 statements. [2025-01-09 02:59:03,895 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2025-01-09 02:59:03,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:03,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-01-09 02:59:03,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:03,968 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:04,570 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 253 proven. 672 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:04,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878056953] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:04,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:04,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 28 [2025-01-09 02:59:04,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563924243] [2025-01-09 02:59:04,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:04,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-01-09 02:59:04,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:04,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-01-09 02:59:04,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=308, Invalid=448, Unknown=0, NotChecked=0, Total=756 [2025-01-09 02:59:04,575 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:04,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:04,862 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2025-01-09 02:59:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-09 02:59:04,863 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2025-01-09 02:59:04,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:04,867 INFO L225 Difference]: With dead ends: 103 [2025-01-09 02:59:04,867 INFO L226 Difference]: Without dead ends: 101 [2025-01-09 02:59:04,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 157 SyntacticMatches, 44 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=902, Invalid=1548, Unknown=0, NotChecked=0, Total=2450 [2025-01-09 02:59:04,868 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:04,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 36 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:04,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-01-09 02:59:04,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2025-01-09 02:59:04,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 94 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:04,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2025-01-09 02:59:04,886 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 91 [2025-01-09 02:59:04,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:04,886 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2025-01-09 02:59:04,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.392857142857143) internal successors, (95), 28 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2025-01-09 02:59:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-01-09 02:59:04,887 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:04,888 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 1, 1, 1, 1, 1] [2025-01-09 02:59:04,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2025-01-09 02:59:05,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:05,088 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:05,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1309704073, now seen corresponding path program 43 times [2025-01-09 02:59:05,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:05,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919353411] [2025-01-09 02:59:05,089 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:59:05,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:05,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-01-09 02:59:05,104 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-01-09 02:59:05,104 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:05,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 673 proven. 317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:06,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:06,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919353411] [2025-01-09 02:59:06,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919353411] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:06,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48853097] [2025-01-09 02:59:06,102 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:59:06,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:06,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:06,104 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:06,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2025-01-09 02:59:06,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 94 statements into 1 equivalence classes. [2025-01-09 02:59:06,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 94 of 94 statements. [2025-01-09 02:59:06,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:06,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:06,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-01-09 02:59:06,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:06,968 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:07,543 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 737 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:07,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48853097] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:07,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:07,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 73 [2025-01-09 02:59:07,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547680793] [2025-01-09 02:59:07,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:07,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-01-09 02:59:07,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:07,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-01-09 02:59:07,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1203, Invalid=4053, Unknown=0, NotChecked=0, Total=5256 [2025-01-09 02:59:07,545 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand has 73 states, 73 states have (on average 2.3013698630136985) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:07,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:07,753 INFO L93 Difference]: Finished difference Result 168 states and 170 transitions. [2025-01-09 02:59:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-01-09 02:59:07,753 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.3013698630136985) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2025-01-09 02:59:07,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:07,754 INFO L225 Difference]: With dead ends: 168 [2025-01-09 02:59:07,754 INFO L226 Difference]: Without dead ends: 96 [2025-01-09 02:59:07,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 119 SyntacticMatches, 44 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2853 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1203, Invalid=4053, Unknown=0, NotChecked=0, Total=5256 [2025-01-09 02:59:07,755 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:07,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:59:07,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-01-09 02:59:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-01-09 02:59:07,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:07,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2025-01-09 02:59:07,760 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 94 [2025-01-09 02:59:07,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:07,760 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2025-01-09 02:59:07,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.3013698630136985) internal successors, (168), 73 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2025-01-09 02:59:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-01-09 02:59:07,761 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:07,761 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1, 1] [2025-01-09 02:59:07,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2025-01-09 02:59:07,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2025-01-09 02:59:07,965 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:07,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:07,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1014620265, now seen corresponding path program 44 times [2025-01-09 02:59:07,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:07,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91979277] [2025-01-09 02:59:07,965 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:07,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:07,971 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-01-09 02:59:07,978 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-01-09 02:59:07,979 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:07,979 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 253 proven. 760 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:08,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:08,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91979277] [2025-01-09 02:59:08,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91979277] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:08,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539927617] [2025-01-09 02:59:08,369 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:08,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:08,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:08,371 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:08,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2025-01-09 02:59:08,436 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-01-09 02:59:08,466 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 95 of 95 statements. [2025-01-09 02:59:08,467 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:08,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:08,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 49 conjuncts are in the unsatisfiable core [2025-01-09 02:59:08,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:08,548 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1013 backedges. 276 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:08,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539927617] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:08,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:08,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 29 [2025-01-09 02:59:08,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761871144] [2025-01-09 02:59:08,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:08,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 02:59:08,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:08,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 02:59:08,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2025-01-09 02:59:08,908 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:09,123 INFO L93 Difference]: Finished difference Result 107 states and 108 transitions. [2025-01-09 02:59:09,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-01-09 02:59:09,124 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2025-01-09 02:59:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:09,125 INFO L225 Difference]: With dead ends: 107 [2025-01-09 02:59:09,125 INFO L226 Difference]: Without dead ends: 105 [2025-01-09 02:59:09,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 163 SyntacticMatches, 47 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=977, Invalid=1675, Unknown=0, NotChecked=0, Total=2652 [2025-01-09 02:59:09,125 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:09,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 30 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:09,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-01-09 02:59:09,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2025-01-09 02:59:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 98 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:09,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions. [2025-01-09 02:59:09,130 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 95 [2025-01-09 02:59:09,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:09,130 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions. [2025-01-09 02:59:09,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.413793103448276) internal successors, (99), 29 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions. [2025-01-09 02:59:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-01-09 02:59:09,131 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:09,131 INFO L218 NwaCegarLoop]: trace histogram [24, 23, 23, 23, 1, 1, 1, 1, 1] [2025-01-09 02:59:09,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:09,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2025-01-09 02:59:09,334 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:09,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1422706268, now seen corresponding path program 45 times [2025-01-09 02:59:09,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:09,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310760323] [2025-01-09 02:59:09,335 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:59:09,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:09,340 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 98 statements into 24 equivalence classes. [2025-01-09 02:59:09,356 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) and asserted 98 of 98 statements. [2025-01-09 02:59:09,360 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2025-01-09 02:59:09,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:10,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 738 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:10,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:10,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310760323] [2025-01-09 02:59:10,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310760323] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:10,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231637012] [2025-01-09 02:59:10,304 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:59:10,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:10,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:10,305 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:10,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2025-01-09 02:59:10,371 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 98 statements into 24 equivalence classes. [2025-01-09 02:59:10,418 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) and asserted 98 of 98 statements. [2025-01-09 02:59:10,418 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2025-01-09 02:59:10,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:10,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-01-09 02:59:10,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:11,119 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 805 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:11,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231637012] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:11,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:11,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 76 [2025-01-09 02:59:11,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096799871] [2025-01-09 02:59:11,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:11,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2025-01-09 02:59:11,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:11,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2025-01-09 02:59:11,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1303, Invalid=4397, Unknown=0, NotChecked=0, Total=5700 [2025-01-09 02:59:11,677 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand has 76 states, 76 states have (on average 2.3026315789473686) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:11,866 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2025-01-09 02:59:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-01-09 02:59:11,866 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.3026315789473686) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2025-01-09 02:59:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:11,867 INFO L225 Difference]: With dead ends: 175 [2025-01-09 02:59:11,867 INFO L226 Difference]: Without dead ends: 100 [2025-01-09 02:59:11,867 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 124 SyntacticMatches, 46 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3098 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1303, Invalid=4397, Unknown=0, NotChecked=0, Total=5700 [2025-01-09 02:59:11,868 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:11,868 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:59:11,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-01-09 02:59:11,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2025-01-09 02:59:11,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.02020202020202) internal successors, (101), 99 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:11,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2025-01-09 02:59:11,872 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 98 [2025-01-09 02:59:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:11,872 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2025-01-09 02:59:11,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 2.3026315789473686) internal successors, (175), 76 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:11,872 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2025-01-09 02:59:11,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2025-01-09 02:59:11,873 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:11,873 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1, 1] [2025-01-09 02:59:11,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:12,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2025-01-09 02:59:12,073 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:12,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1841223036, now seen corresponding path program 46 times [2025-01-09 02:59:12,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:12,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326270609] [2025-01-09 02:59:12,074 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:59:12,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:12,079 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 99 statements into 2 equivalence classes. [2025-01-09 02:59:12,089 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 99 of 99 statements. [2025-01-09 02:59:12,089 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:59:12,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:12,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326270609] [2025-01-09 02:59:12,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326270609] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016061196] [2025-01-09 02:59:12,484 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:59:12,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:12,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:12,489 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:12,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2025-01-09 02:59:12,561 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 99 statements into 2 equivalence classes. [2025-01-09 02:59:12,599 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 99 of 99 statements. [2025-01-09 02:59:12,599 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:59:12,599 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:12,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-01-09 02:59:12,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:12,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1105 backedges. 300 proven. 805 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:13,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016061196] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:13,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:13,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 29 [2025-01-09 02:59:13,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603096187] [2025-01-09 02:59:13,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:13,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 02:59:13,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:13,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 02:59:13,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=456, Unknown=0, NotChecked=0, Total=812 [2025-01-09 02:59:13,223 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand has 29 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 29 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:13,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:13,489 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2025-01-09 02:59:13,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-01-09 02:59:13,489 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 29 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2025-01-09 02:59:13,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:13,490 INFO L225 Difference]: With dead ends: 111 [2025-01-09 02:59:13,490 INFO L226 Difference]: Without dead ends: 109 [2025-01-09 02:59:13,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 172 SyntacticMatches, 48 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1052, Invalid=1704, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 02:59:13,490 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:13,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 24 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-01-09 02:59:13,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2025-01-09 02:59:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 102 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions. [2025-01-09 02:59:13,496 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 99 [2025-01-09 02:59:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:13,497 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions. [2025-01-09 02:59:13,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.4827586206896552) internal successors, (101), 29 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions. [2025-01-09 02:59:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-01-09 02:59:13,497 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:13,497 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 1, 1, 1, 1, 1] [2025-01-09 02:59:13,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:13,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,48 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:13,702 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:13,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:13,702 INFO L85 PathProgramCache]: Analyzing trace with hash -843319895, now seen corresponding path program 47 times [2025-01-09 02:59:13,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:13,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078429087] [2025-01-09 02:59:13,703 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:59:13,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:13,709 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 102 statements into 25 equivalence classes. [2025-01-09 02:59:13,725 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) and asserted 102 of 102 statements. [2025-01-09 02:59:13,726 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2025-01-09 02:59:13,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:14,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:14,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078429087] [2025-01-09 02:59:14,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078429087] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:14,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410571932] [2025-01-09 02:59:14,584 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:59:14,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:14,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:14,586 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:14,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2025-01-09 02:59:14,662 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 102 statements into 25 equivalence classes. [2025-01-09 02:59:14,707 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) and asserted 102 of 102 statements. [2025-01-09 02:59:14,708 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s) [2025-01-09 02:59:14,708 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:14,709 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-01-09 02:59:14,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:15,627 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:16,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 876 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:16,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410571932] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:16,349 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:16,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52, 52] total 77 [2025-01-09 02:59:16,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587538913] [2025-01-09 02:59:16,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:16,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2025-01-09 02:59:16,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:16,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2025-01-09 02:59:16,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1376, Invalid=4476, Unknown=0, NotChecked=0, Total=5852 [2025-01-09 02:59:16,350 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand has 77 states, 77 states have (on average 2.2857142857142856) internal successors, (176), 77 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:16,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:16,525 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions. [2025-01-09 02:59:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-01-09 02:59:16,525 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.2857142857142856) internal successors, (176), 77 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2025-01-09 02:59:16,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:16,526 INFO L225 Difference]: With dead ends: 182 [2025-01-09 02:59:16,526 INFO L226 Difference]: Without dead ends: 104 [2025-01-09 02:59:16,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 130 SyntacticMatches, 49 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2976 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1376, Invalid=4476, Unknown=0, NotChecked=0, Total=5852 [2025-01-09 02:59:16,527 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:16,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 197 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-01-09 02:59:16,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2025-01-09 02:59:16,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 103 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:16,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 105 transitions. [2025-01-09 02:59:16,531 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 105 transitions. Word has length 102 [2025-01-09 02:59:16,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:16,531 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 105 transitions. [2025-01-09 02:59:16,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 2.2857142857142856) internal successors, (176), 77 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:16,531 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 105 transitions. [2025-01-09 02:59:16,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-01-09 02:59:16,532 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:16,532 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1, 1] [2025-01-09 02:59:16,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2025-01-09 02:59:16,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-01-09 02:59:16,737 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:16,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1465485687, now seen corresponding path program 48 times [2025-01-09 02:59:16,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:16,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836549119] [2025-01-09 02:59:16,737 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:59:16,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:16,743 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 25 equivalence classes. [2025-01-09 02:59:16,756 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) and asserted 103 of 103 statements. [2025-01-09 02:59:16,757 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2025-01-09 02:59:16,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:17,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 300 proven. 901 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:17,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:17,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836549119] [2025-01-09 02:59:17,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836549119] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:17,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5043095] [2025-01-09 02:59:17,231 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:59:17,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:17,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:17,234 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:17,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2025-01-09 02:59:17,308 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 103 statements into 25 equivalence classes. [2025-01-09 02:59:17,359 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) and asserted 103 of 103 statements. [2025-01-09 02:59:17,359 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2025-01-09 02:59:17,359 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:17,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-01-09 02:59:17,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:17,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:17,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:18,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1201 backedges. 325 proven. 876 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:18,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5043095] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:18,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:18,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 31 [2025-01-09 02:59:18,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325615496] [2025-01-09 02:59:18,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:18,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-01-09 02:59:18,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:18,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-01-09 02:59:18,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=544, Unknown=0, NotChecked=0, Total=930 [2025-01-09 02:59:18,017 INFO L87 Difference]: Start difference. First operand 104 states and 105 transitions. Second operand has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 31 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:18,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:18,338 INFO L93 Difference]: Finished difference Result 115 states and 116 transitions. [2025-01-09 02:59:18,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-01-09 02:59:18,339 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 31 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2025-01-09 02:59:18,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:18,339 INFO L225 Difference]: With dead ends: 115 [2025-01-09 02:59:18,339 INFO L226 Difference]: Without dead ends: 113 [2025-01-09 02:59:18,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 178 SyntacticMatches, 50 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1136, Invalid=1944, Unknown=0, NotChecked=0, Total=3080 [2025-01-09 02:59:18,340 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:18,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:18,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-01-09 02:59:18,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2025-01-09 02:59:18,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.0188679245283019) internal successors, (108), 106 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions. [2025-01-09 02:59:18,345 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 103 [2025-01-09 02:59:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:18,345 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions. [2025-01-09 02:59:18,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 31 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:18,345 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions. [2025-01-09 02:59:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2025-01-09 02:59:18,346 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:18,346 INFO L218 NwaCegarLoop]: trace histogram [26, 25, 25, 25, 1, 1, 1, 1, 1] [2025-01-09 02:59:18,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:18,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-01-09 02:59:18,550 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:18,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:18,550 INFO L85 PathProgramCache]: Analyzing trace with hash 63270788, now seen corresponding path program 49 times [2025-01-09 02:59:18,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:18,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98368347] [2025-01-09 02:59:18,551 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:59:18,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:18,557 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-01-09 02:59:18,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-01-09 02:59:18,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:18,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 877 proven. 398 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:19,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98368347] [2025-01-09 02:59:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98368347] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357838628] [2025-01-09 02:59:19,470 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:59:19,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:19,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:19,472 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:19,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2025-01-09 02:59:19,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 106 statements into 1 equivalence classes. [2025-01-09 02:59:19,577 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 106 of 106 statements. [2025-01-09 02:59:19,577 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:19,577 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:19,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-01-09 02:59:19,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:20,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:20,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 950 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:21,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357838628] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:21,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:21,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 82 [2025-01-09 02:59:21,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049417370] [2025-01-09 02:59:21,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:21,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2025-01-09 02:59:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:21,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2025-01-09 02:59:21,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1515, Invalid=5127, Unknown=0, NotChecked=0, Total=6642 [2025-01-09 02:59:21,423 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand has 82 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:21,685 INFO L93 Difference]: Finished difference Result 189 states and 191 transitions. [2025-01-09 02:59:21,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2025-01-09 02:59:21,686 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2025-01-09 02:59:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:21,687 INFO L225 Difference]: With dead ends: 189 [2025-01-09 02:59:21,687 INFO L226 Difference]: Without dead ends: 108 [2025-01-09 02:59:21,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 134 SyntacticMatches, 50 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3618 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1515, Invalid=5127, Unknown=0, NotChecked=0, Total=6642 [2025-01-09 02:59:21,687 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:21,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:59:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-01-09 02:59:21,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-01-09 02:59:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:21,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2025-01-09 02:59:21,693 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 106 [2025-01-09 02:59:21,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:21,693 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2025-01-09 02:59:21,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.3048780487804876) internal successors, (189), 82 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2025-01-09 02:59:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-01-09 02:59:21,694 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:21,694 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1, 1] [2025-01-09 02:59:21,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2025-01-09 02:59:21,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,51 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:21,894 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:21,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:21,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1908703332, now seen corresponding path program 50 times [2025-01-09 02:59:21,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:21,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668535742] [2025-01-09 02:59:21,895 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:21,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:21,901 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-01-09 02:59:21,910 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 02:59:21,910 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:21,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 325 proven. 976 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:22,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:22,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668535742] [2025-01-09 02:59:22,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668535742] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:22,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046759056] [2025-01-09 02:59:22,399 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:22,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:22,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:22,402 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:22,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2025-01-09 02:59:22,480 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 107 statements into 2 equivalence classes. [2025-01-09 02:59:22,516 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 107 of 107 statements. [2025-01-09 02:59:22,516 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:22,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:22,523 INFO L256 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-01-09 02:59:22,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:22,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:22,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:23,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 351 proven. 950 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:23,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046759056] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:23,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:23,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 32 [2025-01-09 02:59:23,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897612455] [2025-01-09 02:59:23,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:23,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 02:59:23,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:23,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 02:59:23,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=578, Unknown=0, NotChecked=0, Total=992 [2025-01-09 02:59:23,127 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:23,409 INFO L93 Difference]: Finished difference Result 119 states and 120 transitions. [2025-01-09 02:59:23,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-01-09 02:59:23,409 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2025-01-09 02:59:23,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:23,410 INFO L225 Difference]: With dead ends: 119 [2025-01-09 02:59:23,410 INFO L226 Difference]: Without dead ends: 117 [2025-01-09 02:59:23,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 184 SyntacticMatches, 53 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1555 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1220, Invalid=2086, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 02:59:23,411 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:23,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 34 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:23,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-01-09 02:59:23,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 111. [2025-01-09 02:59:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.018181818181818) internal successors, (112), 110 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions. [2025-01-09 02:59:23,417 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 107 [2025-01-09 02:59:23,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:23,417 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions. [2025-01-09 02:59:23,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.46875) internal successors, (111), 32 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions. [2025-01-09 02:59:23,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2025-01-09 02:59:23,417 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:23,417 INFO L218 NwaCegarLoop]: trace histogram [27, 26, 26, 26, 1, 1, 1, 1, 1] [2025-01-09 02:59:23,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:23,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,52 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:23,618 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:23,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:23,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1113740233, now seen corresponding path program 51 times [2025-01-09 02:59:23,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:23,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514186910] [2025-01-09 02:59:23,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:59:23,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:23,624 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 110 statements into 27 equivalence classes. [2025-01-09 02:59:23,637 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 110 of 110 statements. [2025-01-09 02:59:23,637 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-01-09 02:59:23,637 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 951 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:24,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:24,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514186910] [2025-01-09 02:59:24,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514186910] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:24,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883876213] [2025-01-09 02:59:24,574 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:59:24,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:24,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:24,575 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:24,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2025-01-09 02:59:24,656 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 110 statements into 27 equivalence classes. [2025-01-09 02:59:24,714 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) and asserted 110 of 110 statements. [2025-01-09 02:59:24,714 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2025-01-09 02:59:24,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:24,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-01-09 02:59:24,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:25,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:25,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 1027 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:26,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883876213] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:26,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:26,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56, 56] total 85 [2025-01-09 02:59:26,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167545442] [2025-01-09 02:59:26,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:26,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2025-01-09 02:59:26,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:26,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2025-01-09 02:59:26,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1627, Invalid=5513, Unknown=0, NotChecked=0, Total=7140 [2025-01-09 02:59:26,682 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand has 85 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:26,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:26,873 INFO L93 Difference]: Finished difference Result 196 states and 198 transitions. [2025-01-09 02:59:26,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-01-09 02:59:26,874 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2025-01-09 02:59:26,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:26,875 INFO L225 Difference]: With dead ends: 196 [2025-01-09 02:59:26,875 INFO L226 Difference]: Without dead ends: 112 [2025-01-09 02:59:26,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 139 SyntacticMatches, 52 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3893 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1627, Invalid=5513, Unknown=0, NotChecked=0, Total=7140 [2025-01-09 02:59:26,875 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:26,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 291 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:59:26,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-01-09 02:59:26,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2025-01-09 02:59:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:26,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2025-01-09 02:59:26,885 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 110 [2025-01-09 02:59:26,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:26,889 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2025-01-09 02:59:26,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 2.3058823529411763) internal successors, (196), 85 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2025-01-09 02:59:26,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-01-09 02:59:26,889 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:26,889 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1, 1] [2025-01-09 02:59:26,896 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2025-01-09 02:59:27,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,53 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:27,090 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:27,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:27,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2035419991, now seen corresponding path program 52 times [2025-01-09 02:59:27,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:27,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270353241] [2025-01-09 02:59:27,091 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:59:27,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:27,099 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 111 statements into 2 equivalence classes. [2025-01-09 02:59:27,113 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 111 of 111 statements. [2025-01-09 02:59:27,113 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:59:27,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:27,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:27,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270353241] [2025-01-09 02:59:27,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270353241] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:27,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354253770] [2025-01-09 02:59:27,668 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:59:27,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:27,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:27,670 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:27,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2025-01-09 02:59:27,750 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 111 statements into 2 equivalence classes. [2025-01-09 02:59:27,787 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 111 of 111 statements. [2025-01-09 02:59:27,787 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:59:27,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:27,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-01-09 02:59:27,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:27,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1405 backedges. 378 proven. 1027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:28,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354253770] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:28,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:28,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 32 [2025-01-09 02:59:28,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793297995] [2025-01-09 02:59:28,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:28,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 02:59:28,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:28,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 02:59:28,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=552, Unknown=0, NotChecked=0, Total=992 [2025-01-09 02:59:28,447 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:28,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:28,761 INFO L93 Difference]: Finished difference Result 123 states and 124 transitions. [2025-01-09 02:59:28,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2025-01-09 02:59:28,761 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2025-01-09 02:59:28,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:28,762 INFO L225 Difference]: With dead ends: 123 [2025-01-09 02:59:28,762 INFO L226 Difference]: Without dead ends: 121 [2025-01-09 02:59:28,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 193 SyntacticMatches, 54 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1459 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1304, Invalid=2118, Unknown=0, NotChecked=0, Total=3422 [2025-01-09 02:59:28,762 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:28,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 26 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:28,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-01-09 02:59:28,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2025-01-09 02:59:28,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.0175438596491229) internal successors, (116), 114 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions. [2025-01-09 02:59:28,774 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 111 [2025-01-09 02:59:28,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:28,774 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions. [2025-01-09 02:59:28,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:28,774 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions. [2025-01-09 02:59:28,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-01-09 02:59:28,774 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:28,774 INFO L218 NwaCegarLoop]: trace histogram [28, 27, 27, 27, 1, 1, 1, 1, 1] [2025-01-09 02:59:28,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:28,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2025-01-09 02:59:28,975 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:28,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:28,975 INFO L85 PathProgramCache]: Analyzing trace with hash -843858588, now seen corresponding path program 53 times [2025-01-09 02:59:28,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:28,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051013002] [2025-01-09 02:59:28,975 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:59:28,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:28,982 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 114 statements into 28 equivalence classes. [2025-01-09 02:59:29,015 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) and asserted 114 of 114 statements. [2025-01-09 02:59:29,016 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2025-01-09 02:59:29,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:30,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:30,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:30,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051013002] [2025-01-09 02:59:30,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051013002] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:30,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782556952] [2025-01-09 02:59:30,103 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:59:30,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:30,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:30,105 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:30,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2025-01-09 02:59:30,187 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 114 statements into 28 equivalence classes. [2025-01-09 02:59:30,246 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) and asserted 114 of 114 statements. [2025-01-09 02:59:30,246 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s) [2025-01-09 02:59:30,246 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:30,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 58 conjuncts are in the unsatisfiable core [2025-01-09 02:59:30,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:31,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 1107 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:32,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782556952] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:32,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:32,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58, 58] total 86 [2025-01-09 02:59:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055329965] [2025-01-09 02:59:32,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:32,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2025-01-09 02:59:32,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:32,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2025-01-09 02:59:32,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1709, Invalid=5601, Unknown=0, NotChecked=0, Total=7310 [2025-01-09 02:59:32,146 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand has 86 states, 86 states have (on average 2.2906976744186047) internal successors, (197), 86 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:32,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:32,293 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2025-01-09 02:59:32,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-01-09 02:59:32,294 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.2906976744186047) internal successors, (197), 86 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2025-01-09 02:59:32,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:32,295 INFO L225 Difference]: With dead ends: 203 [2025-01-09 02:59:32,295 INFO L226 Difference]: Without dead ends: 116 [2025-01-09 02:59:32,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 145 SyntacticMatches, 55 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3753 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1709, Invalid=5601, Unknown=0, NotChecked=0, Total=7310 [2025-01-09 02:59:32,295 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:32,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:32,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-01-09 02:59:32,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2025-01-09 02:59:32,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:32,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2025-01-09 02:59:32,301 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 114 [2025-01-09 02:59:32,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:32,301 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2025-01-09 02:59:32,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 2.2906976744186047) internal successors, (197), 86 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:32,301 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2025-01-09 02:59:32,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2025-01-09 02:59:32,301 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:32,301 INFO L218 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1, 1] [2025-01-09 02:59:32,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2025-01-09 02:59:32,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,55 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:32,503 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:32,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:32,503 INFO L85 PathProgramCache]: Analyzing trace with hash -813437372, now seen corresponding path program 54 times [2025-01-09 02:59:32,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:32,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677778801] [2025-01-09 02:59:32,503 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:59:32,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:32,510 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 115 statements into 28 equivalence classes. [2025-01-09 02:59:32,525 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) and asserted 115 of 115 statements. [2025-01-09 02:59:32,525 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2025-01-09 02:59:32,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:33,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 378 proven. 1135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:33,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:33,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677778801] [2025-01-09 02:59:33,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677778801] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:33,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475748401] [2025-01-09 02:59:33,042 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:59:33,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:33,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:33,045 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:33,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2025-01-09 02:59:33,136 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 115 statements into 28 equivalence classes. [2025-01-09 02:59:33,190 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) and asserted 115 of 115 statements. [2025-01-09 02:59:33,190 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 28 check-sat command(s) [2025-01-09 02:59:33,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:33,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-01-09 02:59:33,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:33,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:33,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1513 backedges. 406 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:33,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475748401] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:33,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:33,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 34 [2025-01-09 02:59:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027386661] [2025-01-09 02:59:33,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:33,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-09 02:59:33,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:33,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-09 02:59:33,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=649, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 02:59:33,917 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:34,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:34,263 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2025-01-09 02:59:34,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-01-09 02:59:34,263 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2025-01-09 02:59:34,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:34,264 INFO L225 Difference]: With dead ends: 127 [2025-01-09 02:59:34,264 INFO L226 Difference]: Without dead ends: 125 [2025-01-09 02:59:34,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 199 SyntacticMatches, 56 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1759 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1397, Invalid=2385, Unknown=0, NotChecked=0, Total=3782 [2025-01-09 02:59:34,265 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:34,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:34,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-01-09 02:59:34,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2025-01-09 02:59:34,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 118 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:34,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions. [2025-01-09 02:59:34,270 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 115 [2025-01-09 02:59:34,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:34,270 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions. [2025-01-09 02:59:34,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.5) internal successors, (119), 34 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:34,271 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions. [2025-01-09 02:59:34,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-01-09 02:59:34,271 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:34,271 INFO L218 NwaCegarLoop]: trace histogram [29, 28, 28, 28, 1, 1, 1, 1, 1] [2025-01-09 02:59:34,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2025-01-09 02:59:34,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2025-01-09 02:59:34,472 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:34,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash -902456855, now seen corresponding path program 55 times [2025-01-09 02:59:34,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:34,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544037020] [2025-01-09 02:59:34,473 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:59:34,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:34,479 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-01-09 02:59:34,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 02:59:34,489 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:34,489 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:35,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1108 proven. 488 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:35,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:35,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544037020] [2025-01-09 02:59:35,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544037020] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:35,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646203623] [2025-01-09 02:59:35,531 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:59:35,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:35,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:35,533 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:35,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2025-01-09 02:59:35,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-01-09 02:59:35,657 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-01-09 02:59:35,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:35,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:35,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-01-09 02:59:35,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:36,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:36,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:37,661 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 1190 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:37,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646203623] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:37,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:37,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60, 60] total 91 [2025-01-09 02:59:37,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782370082] [2025-01-09 02:59:37,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:37,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2025-01-09 02:59:37,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:37,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2025-01-09 02:59:37,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1863, Invalid=6327, Unknown=0, NotChecked=0, Total=8190 [2025-01-09 02:59:37,663 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand has 91 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:37,859 INFO L93 Difference]: Finished difference Result 210 states and 212 transitions. [2025-01-09 02:59:37,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-01-09 02:59:37,860 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2025-01-09 02:59:37,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:37,860 INFO L225 Difference]: With dead ends: 210 [2025-01-09 02:59:37,860 INFO L226 Difference]: Without dead ends: 120 [2025-01-09 02:59:37,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 149 SyntacticMatches, 56 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4473 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1863, Invalid=6327, Unknown=0, NotChecked=0, Total=8190 [2025-01-09 02:59:37,861 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:37,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:59:37,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-01-09 02:59:37,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-01-09 02:59:37,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.0168067226890756) internal successors, (121), 119 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:37,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 121 transitions. [2025-01-09 02:59:37,867 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 121 transitions. Word has length 118 [2025-01-09 02:59:37,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:37,867 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 121 transitions. [2025-01-09 02:59:37,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 2.3076923076923075) internal successors, (210), 91 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:37,867 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 121 transitions. [2025-01-09 02:59:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2025-01-09 02:59:37,868 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:37,868 INFO L218 NwaCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1, 1] [2025-01-09 02:59:37,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:38,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-01-09 02:59:38,072 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:38,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash 348281545, now seen corresponding path program 56 times [2025-01-09 02:59:38,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:38,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974165450] [2025-01-09 02:59:38,073 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:38,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:38,079 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-01-09 02:59:38,091 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-01-09 02:59:38,091 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:38,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:38,670 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 406 proven. 1219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:38,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:38,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974165450] [2025-01-09 02:59:38,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974165450] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:38,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847297363] [2025-01-09 02:59:38,671 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:38,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:38,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:38,673 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:38,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2025-01-09 02:59:38,760 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 119 statements into 2 equivalence classes. [2025-01-09 02:59:38,799 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 119 of 119 statements. [2025-01-09 02:59:38,799 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:38,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:38,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-01-09 02:59:38,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:38,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:38,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:39,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1625 backedges. 435 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:39,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847297363] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:39,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:39,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 35 [2025-01-09 02:59:39,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153666461] [2025-01-09 02:59:39,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:39,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-09 02:59:39,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:39,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-09 02:59:39,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=504, Invalid=686, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 02:59:39,584 INFO L87 Difference]: Start difference. First operand 120 states and 121 transitions. Second operand has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 35 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:39,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:39,975 INFO L93 Difference]: Finished difference Result 131 states and 132 transitions. [2025-01-09 02:59:39,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-01-09 02:59:39,975 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 35 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2025-01-09 02:59:39,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:39,976 INFO L225 Difference]: With dead ends: 131 [2025-01-09 02:59:39,976 INFO L226 Difference]: Without dead ends: 129 [2025-01-09 02:59:39,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 205 SyntacticMatches, 59 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1909 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1490, Invalid=2542, Unknown=0, NotChecked=0, Total=4032 [2025-01-09 02:59:39,977 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:39,977 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 33 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:39,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-01-09 02:59:39,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 123. [2025-01-09 02:59:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 122 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions. [2025-01-09 02:59:39,983 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 119 [2025-01-09 02:59:39,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:39,983 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions. [2025-01-09 02:59:39,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5142857142857142) internal successors, (123), 35 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:39,984 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions. [2025-01-09 02:59:39,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-01-09 02:59:39,984 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:39,984 INFO L218 NwaCegarLoop]: trace histogram [30, 29, 29, 29, 1, 1, 1, 1, 1] [2025-01-09 02:59:39,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:40,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2025-01-09 02:59:40,184 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:40,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash -980671676, now seen corresponding path program 57 times [2025-01-09 02:59:40,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:40,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837672939] [2025-01-09 02:59:40,185 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:59:40,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:40,191 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 122 statements into 30 equivalence classes. [2025-01-09 02:59:40,207 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) and asserted 122 of 122 statements. [2025-01-09 02:59:40,207 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2025-01-09 02:59:40,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1191 proven. 520 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:41,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:41,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837672939] [2025-01-09 02:59:41,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837672939] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:41,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655794758] [2025-01-09 02:59:41,300 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:59:41,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:41,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:41,302 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:41,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2025-01-09 02:59:41,394 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 122 statements into 30 equivalence classes. [2025-01-09 02:59:41,459 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) and asserted 122 of 122 statements. [2025-01-09 02:59:41,459 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2025-01-09 02:59:41,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:41,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-01-09 02:59:41,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:42,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:42,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:43,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 1276 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:43,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655794758] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:43,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:43,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 94 [2025-01-09 02:59:43,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926201095] [2025-01-09 02:59:43,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:43,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2025-01-09 02:59:43,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:43,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2025-01-09 02:59:43,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1987, Invalid=6755, Unknown=0, NotChecked=0, Total=8742 [2025-01-09 02:59:43,554 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand has 94 states, 94 states have (on average 2.3085106382978724) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:43,818 INFO L93 Difference]: Finished difference Result 217 states and 219 transitions. [2025-01-09 02:59:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2025-01-09 02:59:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.3085106382978724) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2025-01-09 02:59:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:43,820 INFO L225 Difference]: With dead ends: 217 [2025-01-09 02:59:43,820 INFO L226 Difference]: Without dead ends: 124 [2025-01-09 02:59:43,821 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 154 SyntacticMatches, 58 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4778 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1987, Invalid=6755, Unknown=0, NotChecked=0, Total=8742 [2025-01-09 02:59:43,821 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:43,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 296 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:59:43,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-01-09 02:59:43,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2025-01-09 02:59:43,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:43,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2025-01-09 02:59:43,827 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 122 [2025-01-09 02:59:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:43,828 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2025-01-09 02:59:43,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.3085106382978724) internal successors, (217), 94 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2025-01-09 02:59:43,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2025-01-09 02:59:43,828 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:43,828 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1, 1] [2025-01-09 02:59:43,837 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2025-01-09 02:59:44,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,59 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:44,029 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:44,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:44,029 INFO L85 PathProgramCache]: Analyzing trace with hash -2012384220, now seen corresponding path program 58 times [2025-01-09 02:59:44,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:44,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510210299] [2025-01-09 02:59:44,030 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:59:44,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:44,038 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 123 statements into 2 equivalence classes. [2025-01-09 02:59:44,056 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 123 of 123 statements. [2025-01-09 02:59:44,056 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:59:44,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:44,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:44,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:44,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510210299] [2025-01-09 02:59:44,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510210299] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:44,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805930950] [2025-01-09 02:59:44,716 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 02:59:44,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:44,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:44,718 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:44,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2025-01-09 02:59:44,810 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 123 statements into 2 equivalence classes. [2025-01-09 02:59:44,850 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 123 of 123 statements. [2025-01-09 02:59:44,850 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 02:59:44,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:44,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-01-09 02:59:44,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:44,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:44,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1741 backedges. 465 proven. 1276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:45,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805930950] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:45,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:45,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 35 [2025-01-09 02:59:45,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342900902] [2025-01-09 02:59:45,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:45,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-01-09 02:59:45,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:45,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-01-09 02:59:45,641 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=657, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 02:59:45,641 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:45,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:45,962 INFO L93 Difference]: Finished difference Result 135 states and 136 transitions. [2025-01-09 02:59:45,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2025-01-09 02:59:45,963 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2025-01-09 02:59:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:45,963 INFO L225 Difference]: With dead ends: 135 [2025-01-09 02:59:45,963 INFO L226 Difference]: Without dead ends: 133 [2025-01-09 02:59:45,964 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 214 SyntacticMatches, 60 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1801 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1583, Invalid=2577, Unknown=0, NotChecked=0, Total=4160 [2025-01-09 02:59:45,964 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:45,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:45,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2025-01-09 02:59:45,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2025-01-09 02:59:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.0158730158730158) internal successors, (128), 126 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:45,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions. [2025-01-09 02:59:45,970 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 123 [2025-01-09 02:59:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:45,970 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions. [2025-01-09 02:59:45,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.5714285714285716) internal successors, (125), 35 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:45,971 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions. [2025-01-09 02:59:45,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-01-09 02:59:45,971 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:45,971 INFO L218 NwaCegarLoop]: trace histogram [31, 30, 30, 30, 1, 1, 1, 1, 1] [2025-01-09 02:59:45,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2025-01-09 02:59:46,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2025-01-09 02:59:46,171 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:46,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:46,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1779972087, now seen corresponding path program 59 times [2025-01-09 02:59:46,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:46,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584354131] [2025-01-09 02:59:46,172 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:59:46,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:46,179 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 126 statements into 31 equivalence classes. [2025-01-09 02:59:46,209 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 126 of 126 statements. [2025-01-09 02:59:46,209 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-01-09 02:59:46,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:47,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584354131] [2025-01-09 02:59:47,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584354131] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:47,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174218302] [2025-01-09 02:59:47,356 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 02:59:47,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:47,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:47,359 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:47,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2025-01-09 02:59:47,465 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 126 statements into 31 equivalence classes. [2025-01-09 02:59:47,532 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) and asserted 126 of 126 statements. [2025-01-09 02:59:47,532 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s) [2025-01-09 02:59:47,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:47,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-01-09 02:59:47,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:48,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:48,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 1365 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:49,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174218302] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:49,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:49,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64, 64] total 95 [2025-01-09 02:59:49,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944819686] [2025-01-09 02:59:49,544 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:49,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2025-01-09 02:59:49,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:49,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2025-01-09 02:59:49,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2078, Invalid=6852, Unknown=0, NotChecked=0, Total=8930 [2025-01-09 02:59:49,546 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand has 95 states, 95 states have (on average 2.294736842105263) internal successors, (218), 95 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:49,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:49,790 INFO L93 Difference]: Finished difference Result 224 states and 226 transitions. [2025-01-09 02:59:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-01-09 02:59:49,790 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.294736842105263) internal successors, (218), 95 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2025-01-09 02:59:49,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:49,791 INFO L225 Difference]: With dead ends: 224 [2025-01-09 02:59:49,791 INFO L226 Difference]: Without dead ends: 128 [2025-01-09 02:59:49,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 160 SyntacticMatches, 61 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4620 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2078, Invalid=6852, Unknown=0, NotChecked=0, Total=8930 [2025-01-09 02:59:49,791 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:49,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 306 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:59:49,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-01-09 02:59:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2025-01-09 02:59:49,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2025-01-09 02:59:49,805 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 126 [2025-01-09 02:59:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:49,805 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2025-01-09 02:59:49,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.294736842105263) internal successors, (218), 95 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:49,805 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2025-01-09 02:59:49,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2025-01-09 02:59:49,806 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:49,806 INFO L218 NwaCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1, 1] [2025-01-09 02:59:49,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2025-01-09 02:59:50,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,61 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:50,007 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:50,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:50,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1550472983, now seen corresponding path program 60 times [2025-01-09 02:59:50,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:50,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302993423] [2025-01-09 02:59:50,008 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:59:50,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:50,027 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 127 statements into 31 equivalence classes. [2025-01-09 02:59:50,067 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 02:59:50,068 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-01-09 02:59:50,068 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 465 proven. 1396 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:50,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:50,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302993423] [2025-01-09 02:59:50,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302993423] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:50,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861319640] [2025-01-09 02:59:50,830 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 02:59:50,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:50,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:50,832 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:50,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2025-01-09 02:59:50,929 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 127 statements into 31 equivalence classes. [2025-01-09 02:59:50,992 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) and asserted 127 of 127 statements. [2025-01-09 02:59:50,993 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2025-01-09 02:59:50,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:50,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-01-09 02:59:50,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:51,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:51,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1861 backedges. 496 proven. 1365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:51,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861319640] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:51,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:51,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 37 [2025-01-09 02:59:51,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360346505] [2025-01-09 02:59:51,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:51,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-01-09 02:59:51,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:51,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-01-09 02:59:51,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=569, Invalid=763, Unknown=0, NotChecked=0, Total=1332 [2025-01-09 02:59:51,877 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 37 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:52,265 INFO L93 Difference]: Finished difference Result 139 states and 140 transitions. [2025-01-09 02:59:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-01-09 02:59:52,265 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 37 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2025-01-09 02:59:52,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:52,266 INFO L225 Difference]: With dead ends: 139 [2025-01-09 02:59:52,266 INFO L226 Difference]: Without dead ends: 137 [2025-01-09 02:59:52,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 220 SyntacticMatches, 62 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1685, Invalid=2871, Unknown=0, NotChecked=0, Total=4556 [2025-01-09 02:59:52,267 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:52,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:52,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-01-09 02:59:52,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2025-01-09 02:59:52,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 130 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:52,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions. [2025-01-09 02:59:52,274 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 127 [2025-01-09 02:59:52,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:52,275 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions. [2025-01-09 02:59:52,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.5405405405405403) internal successors, (131), 37 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:52,275 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions. [2025-01-09 02:59:52,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2025-01-09 02:59:52,275 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:52,275 INFO L218 NwaCegarLoop]: trace histogram [32, 31, 31, 31, 1, 1, 1, 1, 1] [2025-01-09 02:59:52,283 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2025-01-09 02:59:52,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2025-01-09 02:59:52,480 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:52,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:52,481 INFO L85 PathProgramCache]: Analyzing trace with hash -2057527004, now seen corresponding path program 61 times [2025-01-09 02:59:52,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:52,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062167696] [2025-01-09 02:59:52,481 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:59:52,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:52,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-01-09 02:59:52,506 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-01-09 02:59:52,506 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:52,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:54,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1366 proven. 587 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:54,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:54,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062167696] [2025-01-09 02:59:54,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062167696] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:54,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322014735] [2025-01-09 02:59:54,007 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 02:59:54,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:54,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:54,009 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:54,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2025-01-09 02:59:54,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 130 statements into 1 equivalence classes. [2025-01-09 02:59:54,152 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 130 of 130 statements. [2025-01-09 02:59:54,152 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 02:59:54,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:54,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-01-09 02:59:54,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:55,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:55,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 1457 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:56,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322014735] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:56,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:56,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66, 66] total 100 [2025-01-09 02:59:56,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733008460] [2025-01-09 02:59:56,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:56,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2025-01-09 02:59:56,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:56,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2025-01-09 02:59:56,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2247, Invalid=7653, Unknown=0, NotChecked=0, Total=9900 [2025-01-09 02:59:56,696 INFO L87 Difference]: Start difference. First operand 131 states and 132 transitions. Second operand has 100 states, 100 states have (on average 2.31) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:56,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:56,968 INFO L93 Difference]: Finished difference Result 231 states and 233 transitions. [2025-01-09 02:59:56,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2025-01-09 02:59:56,969 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.31) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2025-01-09 02:59:56,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:56,970 INFO L225 Difference]: With dead ends: 231 [2025-01-09 02:59:56,970 INFO L226 Difference]: Without dead ends: 132 [2025-01-09 02:59:56,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 164 SyntacticMatches, 62 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5418 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2247, Invalid=7653, Unknown=0, NotChecked=0, Total=9900 [2025-01-09 02:59:56,970 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:56,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 363 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 02:59:56,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-01-09 02:59:56,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2025-01-09 02:59:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.015267175572519) internal successors, (133), 131 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2025-01-09 02:59:56,977 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 130 [2025-01-09 02:59:56,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:56,977 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2025-01-09 02:59:56,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.31) internal successors, (231), 100 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:56,977 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2025-01-09 02:59:56,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2025-01-09 02:59:56,977 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:56,978 INFO L218 NwaCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1, 1] [2025-01-09 02:59:56,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2025-01-09 02:59:57,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,63 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:57,182 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:57,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:57,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1433342468, now seen corresponding path program 62 times [2025-01-09 02:59:57,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:57,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527623678] [2025-01-09 02:59:57,182 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:57,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:57,190 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 131 statements into 2 equivalence classes. [2025-01-09 02:59:57,203 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 131 of 131 statements. [2025-01-09 02:59:57,204 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:57,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:58,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 496 proven. 1489 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:58,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 02:59:58,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527623678] [2025-01-09 02:59:58,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527623678] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 02:59:58,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316014554] [2025-01-09 02:59:58,001 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 02:59:58,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:58,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 02:59:58,005 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 02:59:58,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2025-01-09 02:59:58,110 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 131 statements into 2 equivalence classes. [2025-01-09 02:59:58,157 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 131 of 131 statements. [2025-01-09 02:59:58,157 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 02:59:58,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 02:59:58,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-01-09 02:59:58,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 02:59:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:58,297 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 02:59:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1985 backedges. 528 proven. 1457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 02:59:59,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316014554] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 02:59:59,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 02:59:59,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 38 [2025-01-09 02:59:59,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896381979] [2025-01-09 02:59:59,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 02:59:59,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-01-09 02:59:59,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 02:59:59,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-01-09 02:59:59,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=603, Invalid=803, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 02:59:59,121 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 38 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 02:59:59,561 INFO L93 Difference]: Finished difference Result 143 states and 144 transitions. [2025-01-09 02:59:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2025-01-09 02:59:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 38 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2025-01-09 02:59:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 02:59:59,562 INFO L225 Difference]: With dead ends: 143 [2025-01-09 02:59:59,563 INFO L226 Difference]: Without dead ends: 141 [2025-01-09 02:59:59,563 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 226 SyntacticMatches, 65 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1787, Invalid=3043, Unknown=0, NotChecked=0, Total=4830 [2025-01-09 02:59:59,563 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 02:59:59,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 02:59:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2025-01-09 02:59:59,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2025-01-09 02:59:59,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.0149253731343284) internal successors, (136), 134 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:59,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 136 transitions. [2025-01-09 02:59:59,573 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 136 transitions. Word has length 131 [2025-01-09 02:59:59,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 02:59:59,573 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 136 transitions. [2025-01-09 02:59:59,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.5526315789473686) internal successors, (135), 38 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 02:59:59,573 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 136 transitions. [2025-01-09 02:59:59,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-01-09 02:59:59,573 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 02:59:59,574 INFO L218 NwaCegarLoop]: trace histogram [33, 32, 32, 32, 1, 1, 1, 1, 1] [2025-01-09 02:59:59,581 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2025-01-09 02:59:59,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,64 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 02:59:59,775 INFO L396 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 02:59:59,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 02:59:59,775 INFO L85 PathProgramCache]: Analyzing trace with hash 145415721, now seen corresponding path program 63 times [2025-01-09 02:59:59,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 02:59:59,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410505041] [2025-01-09 02:59:59,776 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 02:59:59,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 02:59:59,801 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 134 statements into 33 equivalence classes. [2025-01-09 02:59:59,838 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) and asserted 134 of 134 statements. [2025-01-09 02:59:59,841 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2025-01-09 02:59:59,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:00:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1458 proven. 622 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:00:01,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 03:00:01,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410505041] [2025-01-09 03:00:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410505041] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 03:00:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422648386] [2025-01-09 03:00:01,458 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 03:00:01,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 03:00:01,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 03:00:01,460 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 03:00:01,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2025-01-09 03:00:01,573 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 134 statements into 33 equivalence classes. [2025-01-09 03:00:01,658 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) and asserted 134 of 134 statements. [2025-01-09 03:00:01,658 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 33 check-sat command(s) [2025-01-09 03:00:01,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 03:00:01,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-01-09 03:00:01,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 03:00:03,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 1552 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 03:00:03,307 INFO L312 TraceCheckSpWp]: Computing backward predicates...