./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Addition03-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d 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/recursive/Addition03-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 21:01:43,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 21:01:44,033 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 21:01:44,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 21:01:44,037 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 21:01:44,050 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 21:01:44,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 21:01:44,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 21:01:44,051 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 21:01:44,051 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 21:01:44,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 21:01:44,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 21:01:44,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 21:01:44,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 21:01:44,052 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 21:01:44,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 21:01:44,052 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 21:01:44,052 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 21:01:44,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 21:01:44,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 21:01:44,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 21:01:44,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 21:01:44,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 21:01:44,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 21:01:44,053 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 21:01:44,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 21:01:44,053 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 21:01:44,053 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 21:01:44,053 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 21:01:44,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 21:01:44,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 21:01:44,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 21:01:44,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:01:44,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 21:01:44,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 21:01:44,054 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 21:01:44,054 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 21:01:44,054 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 21:01:44,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 21:01:44,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 21:01:44,054 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 21:01:44,054 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 21:01:44,054 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 21:01:44,054 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 -> 2b4726bd085117d6d28f7ec87f442bbec9d0d87c17bc39b8147695c8c5a6ec7b [2025-02-07 21:01:44,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 21:01:44,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 21:01:44,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 21:01:44,343 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 21:01:44,343 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 21:01:44,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Addition03-1.c [2025-02-07 21:01:45,480 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6587f12fb/f0074454449740c39fd32da6d8388425/FLAG8a17c1139 [2025-02-07 21:01:45,709 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 21:01:45,710 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive/Addition03-1.c [2025-02-07 21:01:45,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6587f12fb/f0074454449740c39fd32da6d8388425/FLAG8a17c1139 [2025-02-07 21:01:46,057 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6587f12fb/f0074454449740c39fd32da6d8388425 [2025-02-07 21:01:46,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 21:01:46,062 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 21:01:46,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 21:01:46,063 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 21:01:46,074 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 21:01:46,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4259f1f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46, skipping insertion in model container [2025-02-07 21:01:46,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,106 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 21:01:46,307 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/recursive/Addition03-1.c[840,853] [2025-02-07 21:01:46,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:01:46,332 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 21:01:46,341 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/recursive/Addition03-1.c[840,853] [2025-02-07 21:01:46,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:01:46,351 INFO L204 MainTranslator]: Completed translation [2025-02-07 21:01:46,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46 WrapperNode [2025-02-07 21:01:46,353 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 21:01:46,353 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 21:01:46,354 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 21:01:46,354 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 21:01:46,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,371 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 27 [2025-02-07 21:01:46,372 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 21:01:46,373 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 21:01:46,373 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 21:01:46,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 21:01:46,378 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,378 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,379 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,389 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-02-07 21:01:46,390 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,390 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,392 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,393 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,393 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,394 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 21:01:46,395 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 21:01:46,396 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 21:01:46,396 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 21:01:46,396 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (1/1) ... [2025-02-07 21:01:46,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:01:46,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:01:46,420 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 21:01:46,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 21:01:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 21:01:46,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 21:01:46,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 21:01:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 21:01:46,442 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2025-02-07 21:01:46,442 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2025-02-07 21:01:46,484 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 21:01:46,486 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 21:01:46,591 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L23: havoc #t~ret5; [2025-02-07 21:01:46,592 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L20: havoc #t~ret4; [2025-02-07 21:01:46,602 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-07 21:01:46,602 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 21:01:46,610 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 21:01:46,610 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 21:01:46,610 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:01:46 BoogieIcfgContainer [2025-02-07 21:01:46,610 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 21:01:46,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 21:01:46,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 21:01:46,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 21:01:46,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 09:01:46" (1/3) ... [2025-02-07 21:01:46,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47841d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:01:46, skipping insertion in model container [2025-02-07 21:01:46,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:01:46" (2/3) ... [2025-02-07 21:01:46,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47841d1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:01:46, skipping insertion in model container [2025-02-07 21:01:46,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:01:46" (3/3) ... [2025-02-07 21:01:46,620 INFO L128 eAbstractionObserver]: Analyzing ICFG Addition03-1.c [2025-02-07 21:01:46,633 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 21:01:46,634 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Addition03-1.c that has 2 procedures, 19 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-07 21:01:46,669 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 21:01:46,680 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;@23e86bed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 21:01:46,681 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 21:01:46,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 21:01:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-07 21:01:46,688 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:01:46,689 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:01:46,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:01:46,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:01:46,694 INFO L85 PathProgramCache]: Analyzing trace with hash 898757237, now seen corresponding path program 1 times [2025-02-07 21:01:46,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:01:46,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478702148] [2025-02-07 21:01:46,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:01:46,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:01:46,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-07 21:01:46,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-07 21:01:46,757 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:01:46,757 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:46,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 21:01:46,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:01:46,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478702148] [2025-02-07 21:01:46,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478702148] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:01:46,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:01:46,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 21:01:46,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183954954] [2025-02-07 21:01:46,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:01:46,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 21:01:46,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:01:46,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 21:01:46,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 21:01:46,851 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 21:01:46,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:01:46,932 INFO L93 Difference]: Finished difference Result 27 states and 36 transitions. [2025-02-07 21:01:46,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 21:01:46,933 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2025-02-07 21:01:46,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:01:46,937 INFO L225 Difference]: With dead ends: 27 [2025-02-07 21:01:46,937 INFO L226 Difference]: Without dead ends: 20 [2025-02-07 21:01:46,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-07 21:01:46,940 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:01:46,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 33 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:01:46,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-07 21:01:46,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2025-02-07 21:01:46,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-07 21:01:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2025-02-07 21:01:46,965 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2025-02-07 21:01:46,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:01:46,970 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2025-02-07 21:01:46,970 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 21:01:46,970 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2025-02-07 21:01:46,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-07 21:01:46,971 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:01:46,971 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:01:46,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 21:01:46,971 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:01:46,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:01:46,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1781345297, now seen corresponding path program 1 times [2025-02-07 21:01:46,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:01:46,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040194160] [2025-02-07 21:01:46,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:01:46,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:01:46,982 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-07 21:01:46,994 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-07 21:01:46,997 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:01:46,997 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 21:01:47,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:01:47,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040194160] [2025-02-07 21:01:47,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040194160] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:01:47,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075474732] [2025-02-07 21:01:47,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:01:47,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:01:47,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:01:47,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:01:47,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-07 21:01:47,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-07 21:01:47,155 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-07 21:01:47,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:01:47,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:47,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 21:01:47,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:01:47,207 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 21:01:47,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:01:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 21:01:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075474732] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:01:47,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:01:47,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 10 [2025-02-07 21:01:47,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788580706] [2025-02-07 21:01:47,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:01:47,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-07 21:01:47,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:01:47,439 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-07 21:01:47,439 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-07 21:01:47,439 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-07 21:01:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:01:47,512 INFO L93 Difference]: Finished difference Result 32 states and 41 transitions. [2025-02-07 21:01:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 21:01:47,512 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 16 [2025-02-07 21:01:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:01:47,513 INFO L225 Difference]: With dead ends: 32 [2025-02-07 21:01:47,513 INFO L226 Difference]: Without dead ends: 26 [2025-02-07 21:01:47,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2025-02-07 21:01:47,514 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:01:47,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 44 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:01:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-02-07 21:01:47,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2025-02-07 21:01:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-07 21:01:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2025-02-07 21:01:47,518 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2025-02-07 21:01:47,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:01:47,519 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2025-02-07 21:01:47,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-07 21:01:47,519 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2025-02-07 21:01:47,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-07 21:01:47,524 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:01:47,524 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:01:47,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-07 21:01:47,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:01:47,728 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:01:47,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:01:47,729 INFO L85 PathProgramCache]: Analyzing trace with hash 925153987, now seen corresponding path program 2 times [2025-02-07 21:01:47,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:01:47,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644544396] [2025-02-07 21:01:47,729 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:01:47,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:01:47,735 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-07 21:01:47,745 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-07 21:01:47,746 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:01:47,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-07 21:01:47,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:01:47,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644544396] [2025-02-07 21:01:47,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644544396] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:01:47,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293765071] [2025-02-07 21:01:47,893 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:01:47,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:01:47,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:01:47,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:01:47,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-07 21:01:47,918 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 30 statements into 2 equivalence classes. [2025-02-07 21:01:47,930 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-07 21:01:47,930 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:01:47,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:47,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-07 21:01:47,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:01:47,972 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-07 21:01:47,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:01:48,426 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:01:48,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293765071] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:01:48,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:01:48,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 16 [2025-02-07 21:01:48,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146582590] [2025-02-07 21:01:48,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:01:48,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-07 21:01:48,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:01:48,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-07 21:01:48,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2025-02-07 21:01:48,428 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-07 21:01:48,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:01:48,589 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2025-02-07 21:01:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 21:01:48,590 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 30 [2025-02-07 21:01:48,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:01:48,591 INFO L225 Difference]: With dead ends: 38 [2025-02-07 21:01:48,591 INFO L226 Difference]: Without dead ends: 32 [2025-02-07 21:01:48,591 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 52 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2025-02-07 21:01:48,592 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 42 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:01:48,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 72 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:01:48,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-07 21:01:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2025-02-07 21:01:48,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 6 states have return successors, (13), 7 states have call predecessors, (13), 3 states have call successors, (13) [2025-02-07 21:01:48,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2025-02-07 21:01:48,602 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 30 [2025-02-07 21:01:48,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:01:48,603 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2025-02-07 21:01:48,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.0625) internal successors, (33), 16 states have internal predecessors, (33), 5 states have call successors, (5), 1 states have call predecessors, (5), 6 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2025-02-07 21:01:48,603 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2025-02-07 21:01:48,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-07 21:01:48,605 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:01:48,605 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:01:48,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-07 21:01:48,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:01:48,805 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:01:48,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:01:48,807 INFO L85 PathProgramCache]: Analyzing trace with hash 57382005, now seen corresponding path program 3 times [2025-02-07 21:01:48,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:01:48,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43350361] [2025-02-07 21:01:48,808 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:01:48,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:01:48,814 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 6 equivalence classes. [2025-02-07 21:01:48,827 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 44 of 44 statements. [2025-02-07 21:01:48,827 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 21:01:48,827 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 1 proven. 56 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-07 21:01:49,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:01:49,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43350361] [2025-02-07 21:01:49,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43350361] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:01:49,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762013876] [2025-02-07 21:01:49,005 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:01:49,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:01:49,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:01:49,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:01:49,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-07 21:01:49,033 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 44 statements into 6 equivalence classes. [2025-02-07 21:01:49,057 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 44 of 44 statements. [2025-02-07 21:01:49,058 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 21:01:49,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:49,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 21:01:49,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:01:49,106 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-02-07 21:01:49,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:01:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-07 21:01:49,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762013876] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:01:49,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:01:49,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 15] total 22 [2025-02-07 21:01:49,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162855988] [2025-02-07 21:01:49,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:01:49,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-07 21:01:49,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:01:49,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-07 21:01:49,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2025-02-07 21:01:49,956 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2025-02-07 21:01:50,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:01:50,201 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2025-02-07 21:01:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 21:01:50,201 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 44 [2025-02-07 21:01:50,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:01:50,202 INFO L225 Difference]: With dead ends: 44 [2025-02-07 21:01:50,202 INFO L226 Difference]: Without dead ends: 38 [2025-02-07 21:01:50,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 77 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=647, Unknown=0, NotChecked=0, Total=930 [2025-02-07 21:01:50,203 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 77 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:01:50,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 81 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:01:50,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-07 21:01:50,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2025-02-07 21:01:50,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.125) internal successors, (27), 25 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 8 states have return successors, (17), 9 states have call predecessors, (17), 3 states have call successors, (17) [2025-02-07 21:01:50,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 47 transitions. [2025-02-07 21:01:50,216 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 47 transitions. Word has length 44 [2025-02-07 21:01:50,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:01:50,217 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 47 transitions. [2025-02-07 21:01:50,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2025-02-07 21:01:50,217 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 47 transitions. [2025-02-07 21:01:50,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-07 21:01:50,218 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:01:50,218 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:01:50,224 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 21:01:50,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:01:50,418 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:01:50,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:01:50,419 INFO L85 PathProgramCache]: Analyzing trace with hash -18310873, now seen corresponding path program 4 times [2025-02-07 21:01:50,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:01:50,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919897739] [2025-02-07 21:01:50,419 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:01:50,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:01:50,423 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 58 statements into 2 equivalence classes. [2025-02-07 21:01:50,432 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-02-07 21:01:50,432 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 21:01:50,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2025-02-07 21:01:50,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:01:50,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919897739] [2025-02-07 21:01:50,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919897739] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:01:50,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964852695] [2025-02-07 21:01:50,597 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:01:50,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:01:50,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:01:50,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:01:50,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-07 21:01:50,639 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 58 statements into 2 equivalence classes. [2025-02-07 21:01:50,655 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-02-07 21:01:50,655 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 21:01:50,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:50,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-07 21:01:50,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:01:50,708 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-02-07 21:01:50,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:01:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-07 21:01:52,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964852695] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:01:52,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:01:52,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 19] total 23 [2025-02-07 21:01:52,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176530038] [2025-02-07 21:01:52,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:01:52,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-07 21:01:52,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:01:52,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-07 21:01:52,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2025-02-07 21:01:52,499 INFO L87 Difference]: Start difference. First operand 36 states and 47 transitions. Second operand has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2025-02-07 21:01:52,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:01:52,661 INFO L93 Difference]: Finished difference Result 89 states and 138 transitions. [2025-02-07 21:01:52,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-07 21:01:52,661 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) Word has length 58 [2025-02-07 21:01:52,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:01:52,663 INFO L225 Difference]: With dead ends: 89 [2025-02-07 21:01:52,663 INFO L226 Difference]: Without dead ends: 51 [2025-02-07 21:01:52,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 105 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2025-02-07 21:01:52,664 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 151 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:01:52,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 84 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:01:52,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-07 21:01:52,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2025-02-07 21:01:52,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 10 states have return successors, (14), 11 states have call predecessors, (14), 4 states have call successors, (14) [2025-02-07 21:01:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2025-02-07 21:01:52,670 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 58 [2025-02-07 21:01:52,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:01:52,670 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2025-02-07 21:01:52,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.3043478260869565) internal successors, (53), 23 states have internal predecessors, (53), 10 states have call successors, (10), 1 states have call predecessors, (10), 9 states have return successors, (17), 10 states have call predecessors, (17), 10 states have call successors, (17) [2025-02-07 21:01:52,670 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2025-02-07 21:01:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-07 21:01:52,672 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:01:52,672 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:01:52,682 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 [2025-02-07 21:01:52,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:01:52,872 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:01:52,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:01:52,873 INFO L85 PathProgramCache]: Analyzing trace with hash 920824025, now seen corresponding path program 5 times [2025-02-07 21:01:52,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:01:52,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954598674] [2025-02-07 21:01:52,873 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:01:52,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:01:52,878 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 72 statements into 10 equivalence classes. [2025-02-07 21:01:52,888 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 72 of 72 statements. [2025-02-07 21:01:52,888 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-02-07 21:01:52,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 6 proven. 145 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2025-02-07 21:01:53,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:01:53,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954598674] [2025-02-07 21:01:53,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954598674] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:01:53,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516426471] [2025-02-07 21:01:53,101 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:01:53,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:01:53,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:01:53,103 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:01:53,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-07 21:01:53,159 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 72 statements into 10 equivalence classes. [2025-02-07 21:01:53,180 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 72 of 72 statements. [2025-02-07 21:01:53,180 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-02-07 21:01:53,180 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:53,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 22 conjuncts are in the unsatisfiable core [2025-02-07 21:01:53,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:01:53,239 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2025-02-07 21:01:53,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:01:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2025-02-07 21:01:56,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516426471] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:01:56,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:01:56,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 23] total 27 [2025-02-07 21:01:56,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969602721] [2025-02-07 21:01:56,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:01:56,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-07 21:01:56,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:01:56,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-07 21:01:56,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=518, Unknown=0, NotChecked=0, Total=702 [2025-02-07 21:01:56,297 INFO L87 Difference]: Start difference. First operand 49 states and 58 transitions. Second operand has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2025-02-07 21:01:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:01:56,465 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2025-02-07 21:01:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-07 21:01:56,467 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) Word has length 72 [2025-02-07 21:01:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:01:56,468 INFO L225 Difference]: With dead ends: 63 [2025-02-07 21:01:56,468 INFO L226 Difference]: Without dead ends: 57 [2025-02-07 21:01:56,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 131 SyntacticMatches, 9 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=459, Invalid=947, Unknown=0, NotChecked=0, Total=1406 [2025-02-07 21:01:56,469 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 126 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:01:56,469 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 90 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:01:56,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-02-07 21:01:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2025-02-07 21:01:56,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.1578947368421053) internal successors, (44), 38 states have internal predecessors, (44), 4 states have call successors, (4), 3 states have call predecessors, (4), 12 states have return successors, (16), 13 states have call predecessors, (16), 4 states have call successors, (16) [2025-02-07 21:01:56,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2025-02-07 21:01:56,479 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 72 [2025-02-07 21:01:56,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:01:56,480 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2025-02-07 21:01:56,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.3333333333333335) internal successors, (63), 27 states have internal predecessors, (63), 12 states have call successors, (12), 1 states have call predecessors, (12), 11 states have return successors, (21), 12 states have call predecessors, (21), 12 states have call successors, (21) [2025-02-07 21:01:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2025-02-07 21:01:56,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2025-02-07 21:01:56,482 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:01:56,482 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:01:56,493 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 [2025-02-07 21:01:56,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:01:56,683 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:01:56,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:01:56,684 INFO L85 PathProgramCache]: Analyzing trace with hash -536829045, now seen corresponding path program 6 times [2025-02-07 21:01:56,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:01:56,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267826023] [2025-02-07 21:01:56,685 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 21:01:56,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:01:56,691 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 86 statements into 12 equivalence classes. [2025-02-07 21:01:56,706 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 86 of 86 statements. [2025-02-07 21:01:56,707 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-02-07 21:01:56,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 1 proven. 227 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2025-02-07 21:01:56,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:01:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267826023] [2025-02-07 21:01:56,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267826023] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:01:56,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679348326] [2025-02-07 21:01:56,984 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 21:01:56,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:01:56,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:01:56,991 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:01:56,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-07 21:01:57,080 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 86 statements into 12 equivalence classes. [2025-02-07 21:01:57,105 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 86 of 86 statements. [2025-02-07 21:01:57,106 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-02-07 21:01:57,106 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:01:57,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-07 21:01:57,109 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:01:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2025-02-07 21:01:57,238 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 363 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-02-07 21:02:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679348326] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:02,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:02,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 27] total 34 [2025-02-07 21:02:02,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120214707] [2025-02-07 21:02:02,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:02,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-07 21:02:02,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:02,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-07 21:02:02,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=840, Unknown=0, NotChecked=0, Total=1122 [2025-02-07 21:02:02,297 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 34 states, 33 states have (on average 2.303030303030303) internal successors, (76), 34 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (25), 14 states have call predecessors, (25), 14 states have call successors, (25) [2025-02-07 21:02:02,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:02,657 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2025-02-07 21:02:02,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-07 21:02:02,658 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.303030303030303) internal successors, (76), 34 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (25), 14 states have call predecessors, (25), 14 states have call successors, (25) Word has length 86 [2025-02-07 21:02:02,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:02,659 INFO L225 Difference]: With dead ends: 69 [2025-02-07 21:02:02,659 INFO L226 Difference]: Without dead ends: 63 [2025-02-07 21:02:02,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 155 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 724 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=733, Invalid=1619, Unknown=0, NotChecked=0, Total=2352 [2025-02-07 21:02:02,661 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 127 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:02,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 115 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:02:02,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-07 21:02:02,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2025-02-07 21:02:02,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 42 states have internal predecessors, (48), 4 states have call successors, (4), 3 states have call predecessors, (4), 14 states have return successors, (18), 15 states have call predecessors, (18), 4 states have call successors, (18) [2025-02-07 21:02:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 70 transitions. [2025-02-07 21:02:02,673 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 70 transitions. Word has length 86 [2025-02-07 21:02:02,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:02,673 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 70 transitions. [2025-02-07 21:02:02,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.303030303030303) internal successors, (76), 34 states have internal predecessors, (76), 14 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (25), 14 states have call predecessors, (25), 14 states have call successors, (25) [2025-02-07 21:02:02,673 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 70 transitions. [2025-02-07 21:02:02,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2025-02-07 21:02:02,678 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:02,678 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:02:02,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 21:02:02,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-07 21:02:02,879 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:02,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1605801667, now seen corresponding path program 7 times [2025-02-07 21:02:02,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:02,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468321999] [2025-02-07 21:02:02,880 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 21:02:02,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:02,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-02-07 21:02:02,914 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-02-07 21:02:02,914 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:02,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:03,232 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2025-02-07 21:02:03,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468321999] [2025-02-07 21:02:03,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468321999] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:03,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895044899] [2025-02-07 21:02:03,233 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 21:02:03,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:03,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:03,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:02:03,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-07 21:02:03,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 100 statements into 1 equivalence classes. [2025-02-07 21:02:03,420 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 100 of 100 statements. [2025-02-07 21:02:03,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:02:03,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:03,421 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-07 21:02:03,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2025-02-07 21:02:03,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 507 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-02-07 21:02:11,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895044899] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:11,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:11,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 31] total 34 [2025-02-07 21:02:11,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539758593] [2025-02-07 21:02:11,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:11,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-07 21:02:11,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:11,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-07 21:02:11,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2025-02-07 21:02:11,707 INFO L87 Difference]: Start difference. First operand 61 states and 70 transitions. Second operand has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 15 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (28), 16 states have call predecessors, (28), 15 states have call successors, (28) [2025-02-07 21:02:11,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:11,989 INFO L93 Difference]: Finished difference Result 75 states and 87 transitions. [2025-02-07 21:02:11,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-07 21:02:11,989 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 15 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (28), 16 states have call predecessors, (28), 15 states have call successors, (28) Word has length 100 [2025-02-07 21:02:11,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:11,990 INFO L225 Difference]: With dead ends: 75 [2025-02-07 21:02:11,990 INFO L226 Difference]: Without dead ends: 69 [2025-02-07 21:02:11,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 184 SyntacticMatches, 13 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=771, Invalid=1581, Unknown=0, NotChecked=0, Total=2352 [2025-02-07 21:02:11,991 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 227 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:11,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 131 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:02:11,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-07 21:02:11,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2025-02-07 21:02:11,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.1304347826086956) internal successors, (52), 46 states have internal predecessors, (52), 4 states have call successors, (4), 3 states have call predecessors, (4), 16 states have return successors, (20), 17 states have call predecessors, (20), 4 states have call successors, (20) [2025-02-07 21:02:11,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2025-02-07 21:02:11,997 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 100 [2025-02-07 21:02:11,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:11,997 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2025-02-07 21:02:11,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.3529411764705883) internal successors, (80), 34 states have internal predecessors, (80), 15 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (28), 16 states have call predecessors, (28), 15 states have call successors, (28) [2025-02-07 21:02:11,998 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2025-02-07 21:02:11,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-07 21:02:11,998 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:11,998 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:02:12,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-07 21:02:12,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:12,203 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:12,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:12,203 INFO L85 PathProgramCache]: Analyzing trace with hash -651961873, now seen corresponding path program 8 times [2025-02-07 21:02:12,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:12,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056985032] [2025-02-07 21:02:12,203 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:02:12,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:12,215 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 114 statements into 2 equivalence classes. [2025-02-07 21:02:12,230 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 114 of 114 statements. [2025-02-07 21:02:12,230 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:02:12,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:12,549 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2025-02-07 21:02:12,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:12,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056985032] [2025-02-07 21:02:12,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056985032] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:12,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815316115] [2025-02-07 21:02:12,550 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:02:12,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:12,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:12,552 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:02:12,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-07 21:02:12,794 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 114 statements into 2 equivalence classes. [2025-02-07 21:02:12,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 114 of 114 statements. [2025-02-07 21:02:12,819 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:02:12,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:12,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 34 conjuncts are in the unsatisfiable core [2025-02-07 21:02:12,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:12,911 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2025-02-07 21:02:12,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:24,936 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 675 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-02-07 21:02:24,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815316115] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:24,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:24,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 35] total 40 [2025-02-07 21:02:24,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136635432] [2025-02-07 21:02:24,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:24,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-07 21:02:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:24,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-07 21:02:24,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=417, Invalid=1143, Unknown=0, NotChecked=0, Total=1560 [2025-02-07 21:02:24,939 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 40 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 17 states have call successors, (17), 1 states have call predecessors, (17), 18 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2025-02-07 21:02:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:25,283 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2025-02-07 21:02:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-07 21:02:25,283 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 17 states have call successors, (17), 1 states have call predecessors, (17), 18 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) Word has length 114 [2025-02-07 21:02:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:25,284 INFO L225 Difference]: With dead ends: 81 [2025-02-07 21:02:25,284 INFO L226 Difference]: Without dead ends: 75 [2025-02-07 21:02:25,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 208 SyntacticMatches, 15 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1083, Invalid=2223, Unknown=0, NotChecked=0, Total=3306 [2025-02-07 21:02:25,286 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 205 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:25,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 130 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:02:25,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-02-07 21:02:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2025-02-07 21:02:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 4 states have call successors, (4), 3 states have call predecessors, (4), 18 states have return successors, (22), 19 states have call predecessors, (22), 4 states have call successors, (22) [2025-02-07 21:02:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2025-02-07 21:02:25,294 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 114 [2025-02-07 21:02:25,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:25,295 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2025-02-07 21:02:25,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.325) internal successors, (93), 40 states have internal predecessors, (93), 17 states have call successors, (17), 1 states have call predecessors, (17), 18 states have return successors, (33), 18 states have call predecessors, (33), 17 states have call successors, (33) [2025-02-07 21:02:25,295 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2025-02-07 21:02:25,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2025-02-07 21:02:25,295 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:25,295 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:02:25,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-07 21:02:25,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:25,496 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:25,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:25,497 INFO L85 PathProgramCache]: Analyzing trace with hash -245967455, now seen corresponding path program 9 times [2025-02-07 21:02:25,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:25,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973035438] [2025-02-07 21:02:25,497 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:02:25,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:25,505 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 128 statements into 18 equivalence classes. [2025-02-07 21:02:25,523 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 128 of 128 statements. [2025-02-07 21:02:25,523 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-02-07 21:02:25,523 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 1 proven. 506 refuted. 0 times theorem prover too weak. 513 trivial. 0 not checked. [2025-02-07 21:02:25,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973035438] [2025-02-07 21:02:25,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973035438] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:25,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250174563] [2025-02-07 21:02:25,892 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:02:25,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:25,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:25,894 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:02:25,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-07 21:02:26,291 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 128 statements into 18 equivalence classes. [2025-02-07 21:02:26,326 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) and asserted 128 of 128 statements. [2025-02-07 21:02:26,326 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2025-02-07 21:02:26,326 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:26,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-07 21:02:26,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2025-02-07 21:02:26,426 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:02:44,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1020 backedges. 0 proven. 867 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2025-02-07 21:02:44,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250174563] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:02:44,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:02:44,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 39] total 46 [2025-02-07 21:02:44,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373661622] [2025-02-07 21:02:44,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:02:44,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-07 21:02:44,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:02:44,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-07 21:02:44,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=516, Invalid=1554, Unknown=0, NotChecked=0, Total=2070 [2025-02-07 21:02:44,465 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 46 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 46 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (37), 20 states have call predecessors, (37), 20 states have call successors, (37) [2025-02-07 21:02:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:02:45,151 INFO L93 Difference]: Finished difference Result 87 states and 99 transitions. [2025-02-07 21:02:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-07 21:02:45,152 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 46 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (37), 20 states have call predecessors, (37), 20 states have call successors, (37) Word has length 128 [2025-02-07 21:02:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:02:45,153 INFO L225 Difference]: With dead ends: 87 [2025-02-07 21:02:45,153 INFO L226 Difference]: Without dead ends: 81 [2025-02-07 21:02:45,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 233 SyntacticMatches, 17 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1414 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1399, Invalid=3023, Unknown=0, NotChecked=0, Total=4422 [2025-02-07 21:02:45,154 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 472 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 21:02:45,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 147 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [295 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 21:02:45,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-02-07 21:02:45,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2025-02-07 21:02:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 54 states have internal predecessors, (60), 4 states have call successors, (4), 3 states have call predecessors, (4), 20 states have return successors, (24), 21 states have call predecessors, (24), 4 states have call successors, (24) [2025-02-07 21:02:45,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2025-02-07 21:02:45,167 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 128 [2025-02-07 21:02:45,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:02:45,167 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2025-02-07 21:02:45,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 46 states have internal predecessors, (106), 20 states have call successors, (20), 1 states have call predecessors, (20), 20 states have return successors, (37), 20 states have call predecessors, (37), 20 states have call successors, (37) [2025-02-07 21:02:45,168 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2025-02-07 21:02:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2025-02-07 21:02:45,168 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:02:45,171 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:02:45,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-07 21:02:45,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:45,372 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:02:45,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:02:45,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1626784685, now seen corresponding path program 10 times [2025-02-07 21:02:45,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:02:45,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244565661] [2025-02-07 21:02:45,373 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:02:45,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:02:45,384 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 142 statements into 2 equivalence classes. [2025-02-07 21:02:45,394 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 142 of 142 statements. [2025-02-07 21:02:45,394 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 21:02:45,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 606 refuted. 0 times theorem prover too weak. 667 trivial. 0 not checked. [2025-02-07 21:02:45,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:02:45,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244565661] [2025-02-07 21:02:45,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244565661] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:02:45,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687611066] [2025-02-07 21:02:45,837 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:02:45,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:02:45,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:02:45,839 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:02:45,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-07 21:02:46,416 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 142 statements into 2 equivalence classes. [2025-02-07 21:02:46,447 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 142 of 142 statements. [2025-02-07 21:02:46,447 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 21:02:46,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:02:46,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-07 21:02:46,451 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:02:46,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2025-02-07 21:02:46,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:03:11,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1273 backedges. 0 proven. 1083 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2025-02-07 21:03:11,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687611066] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:03:11,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:03:11,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 43] total 47 [2025-02-07 21:03:11,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308687948] [2025-02-07 21:03:11,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:03:11,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-02-07 21:03:11,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:03:11,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-02-07 21:03:11,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=554, Invalid=1608, Unknown=0, NotChecked=0, Total=2162 [2025-02-07 21:03:11,523 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand has 47 states, 47 states have (on average 2.404255319148936) internal successors, (113), 47 states have internal predecessors, (113), 22 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (41), 22 states have call predecessors, (41), 22 states have call successors, (41) [2025-02-07 21:03:11,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:03:11,939 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2025-02-07 21:03:11,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-07 21:03:11,940 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.404255319148936) internal successors, (113), 47 states have internal predecessors, (113), 22 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (41), 22 states have call predecessors, (41), 22 states have call successors, (41) Word has length 142 [2025-02-07 21:03:11,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:03:11,941 INFO L225 Difference]: With dead ends: 93 [2025-02-07 21:03:11,941 INFO L226 Difference]: Without dead ends: 87 [2025-02-07 21:03:11,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 261 SyntacticMatches, 19 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1280 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1499, Invalid=3057, Unknown=0, NotChecked=0, Total=4556 [2025-02-07 21:03:11,944 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 440 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 21:03:11,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 165 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 21:03:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-02-07 21:03:11,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2025-02-07 21:03:11,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 58 states have (on average 1.103448275862069) internal successors, (64), 58 states have internal predecessors, (64), 4 states have call successors, (4), 3 states have call predecessors, (4), 22 states have return successors, (26), 23 states have call predecessors, (26), 4 states have call successors, (26) [2025-02-07 21:03:11,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2025-02-07 21:03:11,957 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 142 [2025-02-07 21:03:11,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:03:11,957 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2025-02-07 21:03:11,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.404255319148936) internal successors, (113), 47 states have internal predecessors, (113), 22 states have call successors, (22), 1 states have call predecessors, (22), 21 states have return successors, (41), 22 states have call predecessors, (41), 22 states have call successors, (41) [2025-02-07 21:03:11,957 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2025-02-07 21:03:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2025-02-07 21:03:11,958 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:03:11,958 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:03:11,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-07 21:03:12,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:03:12,159 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:03:12,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:03:12,159 INFO L85 PathProgramCache]: Analyzing trace with hash 834792965, now seen corresponding path program 11 times [2025-02-07 21:03:12,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:03:12,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499172612] [2025-02-07 21:03:12,160 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:03:12,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:03:12,176 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 156 statements into 22 equivalence classes. [2025-02-07 21:03:12,192 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) and asserted 156 of 156 statements. [2025-02-07 21:03:12,192 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2025-02-07 21:03:12,192 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 15 proven. 718 refuted. 0 times theorem prover too weak. 821 trivial. 0 not checked. [2025-02-07 21:03:12,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:03:12,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499172612] [2025-02-07 21:03:12,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499172612] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:03:12,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029544123] [2025-02-07 21:03:12,653 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:03:12,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:03:12,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:03:12,655 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:03:12,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-07 21:03:13,492 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 156 statements into 22 equivalence classes. [2025-02-07 21:03:13,542 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) and asserted 156 of 156 statements. [2025-02-07 21:03:13,543 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2025-02-07 21:03:13,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:03:13,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-07 21:03:13,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:03:13,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1554 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 882 trivial. 0 not checked. [2025-02-07 21:03:13,661 INFO L312 TraceCheckSpWp]: Computing backward predicates...