./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/fibo_5-2.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-simple/fibo_5-2.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 02dc726982da9e300f34803a4bdbb3c0165037d3f4471bd0e009c42cfb19ed24 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 21:04:44,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 21:04:44,841 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 21:04:44,845 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 21:04:44,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 21:04:44,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 21:04:44,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 21:04:44,870 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 21:04:44,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 21:04:44,870 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 21:04:44,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 21:04:44,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 21:04:44,871 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 21:04:44,871 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 21:04:44,871 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 21:04:44,871 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 21:04:44,871 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 21:04:44,871 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 21:04:44,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 21:04:44,872 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 21:04:44,872 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 21:04:44,872 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 21:04:44,872 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 21:04:44,872 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 21:04:44,872 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 21:04:44,872 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 21:04:44,872 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 21:04:44,872 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 21:04:44,872 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 21:04:44,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:04:44,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 21:04:44,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 21:04:44,873 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 -> 02dc726982da9e300f34803a4bdbb3c0165037d3f4471bd0e009c42cfb19ed24 [2025-02-07 21:04:45,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 21:04:45,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 21:04:45,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 21:04:45,119 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 21:04:45,119 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 21:04:45,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/fibo_5-2.c [2025-02-07 21:04:46,275 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/81353f94f/6a35dabcb6ed4f648e697d516bc8b01b/FLAG048462de4 [2025-02-07 21:04:46,487 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 21:04:46,487 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/fibo_5-2.c [2025-02-07 21:04:46,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/81353f94f/6a35dabcb6ed4f648e697d516bc8b01b/FLAG048462de4 [2025-02-07 21:04:46,841 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/81353f94f/6a35dabcb6ed4f648e697d516bc8b01b [2025-02-07 21:04:46,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 21:04:46,844 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 21:04:46,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 21:04:46,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 21:04:46,848 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 21:04:46,848 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,849 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74a809ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46, skipping insertion in model container [2025-02-07 21:04:46,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,857 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 21:04:46,934 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-simple/fibo_5-2.c[740,753] [2025-02-07 21:04:46,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:04:46,942 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 21:04:46,949 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-simple/fibo_5-2.c[740,753] [2025-02-07 21:04:46,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:04:46,958 INFO L204 MainTranslator]: Completed translation [2025-02-07 21:04:46,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46 WrapperNode [2025-02-07 21:04:46,959 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 21:04:46,960 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 21:04:46,960 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 21:04:46,960 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 21:04:46,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,975 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2025-02-07 21:04:46,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 21:04:46,975 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 21:04:46,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 21:04:46,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 21:04:46,980 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,980 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,980 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,985 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 21:04:46,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,986 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,987 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 21:04:46,988 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 21:04:46,988 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 21:04:46,989 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 21:04:46,989 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (1/1) ... [2025-02-07 21:04:46,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:04:47,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:47,009 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 21:04:47,018 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 21:04:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 21:04:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 21:04:47,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 21:04:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 21:04:47,030 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2025-02-07 21:04:47,030 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2025-02-07 21:04:47,065 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 21:04:47,066 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 21:04:47,123 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L13: havoc #t~ret4;havoc #t~ret5; [2025-02-07 21:04:47,127 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-02-07 21:04:47,128 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 21:04:47,133 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 21:04:47,133 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 21:04:47,133 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:04:47 BoogieIcfgContainer [2025-02-07 21:04:47,134 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 21:04:47,135 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 21:04:47,135 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 21:04:47,138 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 21:04:47,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 09:04:46" (1/3) ... [2025-02-07 21:04:47,138 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22bf47f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:04:47, skipping insertion in model container [2025-02-07 21:04:47,138 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:04:46" (2/3) ... [2025-02-07 21:04:47,139 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22bf47f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:04:47, skipping insertion in model container [2025-02-07 21:04:47,139 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:04:47" (3/3) ... [2025-02-07 21:04:47,139 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2025-02-07 21:04:47,148 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 21:04:47,149 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_5-2.c that has 2 procedures, 18 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-07 21:04:47,178 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 21:04:47,185 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;@5c52404b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 21:04:47,185 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 21:04:47,188 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 21:04:47,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-07 21:04:47,192 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:47,192 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:47,193 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:47,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:47,196 INFO L85 PathProgramCache]: Analyzing trace with hash -396287683, now seen corresponding path program 1 times [2025-02-07 21:04:47,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:47,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687961784] [2025-02-07 21:04:47,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:47,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:47,245 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-07 21:04:47,265 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-07 21:04:47,265 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:47,265 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:47,348 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 21:04:47,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:47,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687961784] [2025-02-07 21:04:47,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687961784] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:04:47,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:04:47,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 21:04:47,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226758598] [2025-02-07 21:04:47,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:04:47,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 21:04:47,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:47,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 21:04:47,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 21:04:47,370 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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), 4 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 21:04:47,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:47,416 INFO L93 Difference]: Finished difference Result 27 states and 33 transitions. [2025-02-07 21:04:47,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 21:04:47,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 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 21:04:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:47,423 INFO L225 Difference]: With dead ends: 27 [2025-02-07 21:04:47,423 INFO L226 Difference]: Without dead ends: 17 [2025-02-07 21:04:47,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 21:04:47,426 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:47,427 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:04:47,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-02-07 21:04:47,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2025-02-07 21:04:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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 21:04:47,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2025-02-07 21:04:47,448 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2025-02-07 21:04:47,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:47,448 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2025-02-07 21:04:47,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 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 21:04:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2025-02-07 21:04:47,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-07 21:04:47,449 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:47,449 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:47,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 21:04:47,450 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:47,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:47,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1148952219, now seen corresponding path program 1 times [2025-02-07 21:04:47,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:47,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195532777] [2025-02-07 21:04:47,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:47,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:47,455 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-07 21:04:47,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-07 21:04:47,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:47,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:47,495 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 21:04:47,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:47,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195532777] [2025-02-07 21:04:47,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195532777] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:04:47,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:04:47,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 21:04:47,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623588983] [2025-02-07 21:04:47,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:04:47,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 21:04:47,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:47,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 21:04:47,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 21:04:47,499 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 21:04:47,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:47,511 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2025-02-07 21:04:47,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 21:04:47,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2025-02-07 21:04:47,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:47,512 INFO L225 Difference]: With dead ends: 23 [2025-02-07 21:04:47,512 INFO L226 Difference]: Without dead ends: 19 [2025-02-07 21:04:47,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 21:04:47,513 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:47,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:04:47,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-02-07 21:04:47,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2025-02-07 21:04:47,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 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 21:04:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2025-02-07 21:04:47,517 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2025-02-07 21:04:47,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:47,517 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2025-02-07 21:04:47,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 21:04:47,517 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2025-02-07 21:04:47,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-07 21:04:47,518 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:47,518 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:47,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 21:04:47,518 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:47,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:47,518 INFO L85 PathProgramCache]: Analyzing trace with hash -123157781, now seen corresponding path program 1 times [2025-02-07 21:04:47,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:47,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308094567] [2025-02-07 21:04:47,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:47,524 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-07 21:04:47,529 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-07 21:04:47,530 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:47,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 21:04:47,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:47,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308094567] [2025-02-07 21:04:47,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308094567] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:47,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484850662] [2025-02-07 21:04:47,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:47,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:47,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:47,606 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 21:04:47,608 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 21:04:47,642 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-07 21:04:47,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-07 21:04:47,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:47,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:47,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 21:04:47,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:47,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 21:04:47,735 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-07 21:04:47,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484850662] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:47,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:47,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 11 [2025-02-07 21:04:47,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109704031] [2025-02-07 21:04:47,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:47,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-07 21:04:47,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:47,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-07 21:04:47,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2025-02-07 21:04:47,910 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 11 states, 8 states have (on average 3.375) internal successors, (27), 11 states have internal predecessors, (27), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 21:04:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:47,982 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2025-02-07 21:04:47,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 21:04:47,983 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 3.375) internal successors, (27), 11 states have internal predecessors, (27), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 22 [2025-02-07 21:04:47,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:47,983 INFO L225 Difference]: With dead ends: 34 [2025-02-07 21:04:47,983 INFO L226 Difference]: Without dead ends: 19 [2025-02-07 21:04:47,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2025-02-07 21:04:47,984 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:47,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:47,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2025-02-07 21:04:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2025-02-07 21:04:47,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2025-02-07 21:04:47,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2025-02-07 21:04:47,989 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 22 [2025-02-07 21:04:47,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:47,989 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2025-02-07 21:04:47,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 3.375) internal successors, (27), 11 states have internal predecessors, (27), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-07 21:04:47,989 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2025-02-07 21:04:47,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-07 21:04:47,990 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:47,990 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:47,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 21:04:48,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:48,194 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:48,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:48,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1895672213, now seen corresponding path program 1 times [2025-02-07 21:04:48,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:48,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568302286] [2025-02-07 21:04:48,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:48,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:48,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-07 21:04:48,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 21:04:48,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:48,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 21:04:48,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:48,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568302286] [2025-02-07 21:04:48,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568302286] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:48,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224304288] [2025-02-07 21:04:48,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:04:48,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:48,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:48,308 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 21:04:48,310 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 21:04:48,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-07 21:04:48,340 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-07 21:04:48,340 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:48,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:48,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 21:04:48,341 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 21:04:48,361 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:48,484 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-07 21:04:48,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224304288] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:48,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:48,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2025-02-07 21:04:48,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098457720] [2025-02-07 21:04:48,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:48,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-07 21:04:48,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:48,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-07 21:04:48,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-07 21:04:48,486 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 21:04:48,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:48,536 INFO L93 Difference]: Finished difference Result 28 states and 37 transitions. [2025-02-07 21:04:48,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 21:04:48,536 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 23 [2025-02-07 21:04:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:48,537 INFO L225 Difference]: With dead ends: 28 [2025-02-07 21:04:48,539 INFO L226 Difference]: Without dead ends: 24 [2025-02-07 21:04:48,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2025-02-07 21:04:48,540 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:48,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 41 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:04:48,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-07 21:04:48,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-02-07 21:04:48,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 17 states have internal predecessors, (17), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2025-02-07 21:04:48,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2025-02-07 21:04:48,548 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 23 [2025-02-07 21:04:48,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:48,548 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2025-02-07 21:04:48,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.142857142857143) internal successors, (22), 9 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2025-02-07 21:04:48,548 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2025-02-07 21:04:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-07 21:04:48,549 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:48,550 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:48,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-07 21:04:48,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:48,750 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:48,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:48,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1431968429, now seen corresponding path program 2 times [2025-02-07 21:04:48,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:48,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007671699] [2025-02-07 21:04:48,752 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:04:48,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:48,770 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-02-07 21:04:48,802 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-07 21:04:48,802 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:04:48,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:49,053 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-07 21:04:49,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007671699] [2025-02-07 21:04:49,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007671699] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:49,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591210197] [2025-02-07 21:04:49,054 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:04:49,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:49,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:49,056 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 21:04:49,057 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 21:04:49,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-02-07 21:04:49,098 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-07 21:04:49,099 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:04:49,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:49,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 21:04:49,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-07 21:04:49,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-07 21:04:49,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591210197] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:49,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:49,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 9] total 20 [2025-02-07 21:04:49,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56363184] [2025-02-07 21:04:49,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:49,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-07 21:04:49,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:49,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-07 21:04:49,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2025-02-07 21:04:49,477 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 20 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) [2025-02-07 21:04:49,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:49,718 INFO L93 Difference]: Finished difference Result 45 states and 82 transitions. [2025-02-07 21:04:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-07 21:04:49,719 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) Word has length 36 [2025-02-07 21:04:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:49,720 INFO L225 Difference]: With dead ends: 45 [2025-02-07 21:04:49,720 INFO L226 Difference]: Without dead ends: 41 [2025-02-07 21:04:49,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2025-02-07 21:04:49,721 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:49,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 100 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:49,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-07 21:04:49,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2025-02-07 21:04:49,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (20), 7 states have call predecessors, (20), 5 states have call successors, (20) [2025-02-07 21:04:49,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 45 transitions. [2025-02-07 21:04:49,734 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 45 transitions. Word has length 36 [2025-02-07 21:04:49,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:49,734 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 45 transitions. [2025-02-07 21:04:49,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 10 states have call successors, (11), 1 states have call predecessors, (11), 7 states have return successors, (13), 8 states have call predecessors, (13), 10 states have call successors, (13) [2025-02-07 21:04:49,734 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 45 transitions. [2025-02-07 21:04:49,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-07 21:04:49,736 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:49,736 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:49,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-07 21:04:49,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:49,937 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:49,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:49,937 INFO L85 PathProgramCache]: Analyzing trace with hash 429579557, now seen corresponding path program 3 times [2025-02-07 21:04:49,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:49,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727975792] [2025-02-07 21:04:49,937 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:04:49,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:49,946 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 90 statements into 12 equivalence classes. [2025-02-07 21:04:49,958 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 53 of 90 statements. [2025-02-07 21:04:49,958 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 21:04:49,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:50,078 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 167 proven. 29 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2025-02-07 21:04:50,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:50,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727975792] [2025-02-07 21:04:50,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727975792] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:50,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070673339] [2025-02-07 21:04:50,079 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:04:50,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:50,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:50,082 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 21:04:50,083 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 21:04:50,117 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 90 statements into 12 equivalence classes. [2025-02-07 21:04:50,133 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 53 of 90 statements. [2025-02-07 21:04:50,134 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-07 21:04:50,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:50,134 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 21:04:50,137 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:50,171 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 215 proven. 12 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2025-02-07 21:04:50,171 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 169 proven. 27 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2025-02-07 21:04:50,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070673339] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:50,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:50,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 13 [2025-02-07 21:04:50,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369664007] [2025-02-07 21:04:50,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:50,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 21:04:50,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:50,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 21:04:50,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2025-02-07 21:04:50,556 INFO L87 Difference]: Start difference. First operand 29 states and 45 transitions. Second operand has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) [2025-02-07 21:04:50,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:50,644 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2025-02-07 21:04:50,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 21:04:50,644 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) Word has length 90 [2025-02-07 21:04:50,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:50,645 INFO L225 Difference]: With dead ends: 61 [2025-02-07 21:04:50,645 INFO L226 Difference]: Without dead ends: 34 [2025-02-07 21:04:50,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 172 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2025-02-07 21:04:50,646 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:50,646 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 61 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:50,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-02-07 21:04:50,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2025-02-07 21:04:50,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 5 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2025-02-07 21:04:50,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2025-02-07 21:04:50,656 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 90 [2025-02-07 21:04:50,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:50,656 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2025-02-07 21:04:50,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.230769230769231) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (9), 2 states have call predecessors, (9), 6 states have return successors, (13), 4 states have call predecessors, (13), 6 states have call successors, (13) [2025-02-07 21:04:50,656 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2025-02-07 21:04:50,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2025-02-07 21:04:50,658 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:50,658 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:50,666 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 21:04:50,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-07 21:04:50,859 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:50,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:50,860 INFO L85 PathProgramCache]: Analyzing trace with hash -588958223, now seen corresponding path program 4 times [2025-02-07 21:04:50,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:50,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079104853] [2025-02-07 21:04:50,860 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:04:50,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:50,866 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 92 statements into 2 equivalence classes. [2025-02-07 21:04:50,875 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 78 of 92 statements. [2025-02-07 21:04:50,878 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 21:04:50,878 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:51,054 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 91 proven. 165 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2025-02-07 21:04:51,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:51,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079104853] [2025-02-07 21:04:51,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079104853] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:51,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143035167] [2025-02-07 21:04:51,055 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:04:51,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:51,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:51,060 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 21:04:51,061 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 21:04:51,090 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 92 statements into 2 equivalence classes. [2025-02-07 21:04:51,107 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 78 of 92 statements. [2025-02-07 21:04:51,107 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 21:04:51,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:51,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 21:04:51,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 106 proven. 170 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2025-02-07 21:04:51,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:52,006 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 106 proven. 182 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2025-02-07 21:04:52,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143035167] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:52,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:52,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2025-02-07 21:04:52,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466165803] [2025-02-07 21:04:52,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:52,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-07 21:04:52,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:52,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-07 21:04:52,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2025-02-07 21:04:52,009 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (21), 9 states have call predecessors, (21), 14 states have call successors, (21) [2025-02-07 21:04:52,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:52,252 INFO L93 Difference]: Finished difference Result 74 states and 122 transitions. [2025-02-07 21:04:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-07 21:04:52,253 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (21), 9 states have call predecessors, (21), 14 states have call successors, (21) Word has length 92 [2025-02-07 21:04:52,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:52,254 INFO L225 Difference]: With dead ends: 74 [2025-02-07 21:04:52,254 INFO L226 Difference]: Without dead ends: 45 [2025-02-07 21:04:52,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 172 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2025-02-07 21:04:52,256 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:52,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 99 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:52,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-07 21:04:52,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2025-02-07 21:04:52,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2025-02-07 21:04:52,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 54 transitions. [2025-02-07 21:04:52,261 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 54 transitions. Word has length 92 [2025-02-07 21:04:52,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:52,261 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 54 transitions. [2025-02-07 21:04:52,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.05) internal successors, (61), 20 states have internal predecessors, (61), 14 states have call successors, (18), 1 states have call predecessors, (18), 8 states have return successors, (21), 9 states have call predecessors, (21), 14 states have call successors, (21) [2025-02-07 21:04:52,262 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 54 transitions. [2025-02-07 21:04:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-07 21:04:52,263 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:52,263 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:52,270 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 21:04:52,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:52,467 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:52,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:52,467 INFO L85 PathProgramCache]: Analyzing trace with hash 647110413, now seen corresponding path program 5 times [2025-02-07 21:04:52,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:52,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167946565] [2025-02-07 21:04:52,468 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:04:52,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:52,476 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 64 statements into 8 equivalence classes. [2025-02-07 21:04:52,486 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 64 of 64 statements. [2025-02-07 21:04:52,490 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-02-07 21:04:52,490 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 39 proven. 57 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-07 21:04:52,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:52,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167946565] [2025-02-07 21:04:52,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167946565] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:52,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059103080] [2025-02-07 21:04:52,551 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:04:52,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:52,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:52,555 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 21:04:52,556 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 21:04:52,583 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 64 statements into 8 equivalence classes. [2025-02-07 21:04:52,597 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 64 of 64 statements. [2025-02-07 21:04:52,597 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-02-07 21:04:52,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:52,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 21:04:52,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:52,624 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 55 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2025-02-07 21:04:52,625 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:52,857 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 62 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-02-07 21:04:52,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059103080] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:52,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:52,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 11 [2025-02-07 21:04:52,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123970322] [2025-02-07 21:04:52,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:52,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-07 21:04:52,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:52,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-07 21:04:52,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2025-02-07 21:04:52,858 INFO L87 Difference]: Start difference. First operand 42 states and 54 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-07 21:04:52,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:52,929 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2025-02-07 21:04:52,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 21:04:52,930 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 64 [2025-02-07 21:04:52,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:52,931 INFO L225 Difference]: With dead ends: 50 [2025-02-07 21:04:52,931 INFO L226 Difference]: Without dead ends: 45 [2025-02-07 21:04:52,931 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 122 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2025-02-07 21:04:52,932 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:52,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 41 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:52,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-07 21:04:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2025-02-07 21:04:52,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.096774193548387) internal successors, (34), 30 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 6 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2025-02-07 21:04:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2025-02-07 21:04:52,936 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 64 [2025-02-07 21:04:52,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:52,937 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2025-02-07 21:04:52,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 7 states have call successors, (11), 1 states have call predecessors, (11), 4 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2025-02-07 21:04:52,937 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2025-02-07 21:04:52,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-02-07 21:04:52,938 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:52,938 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 7, 4, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:52,946 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 21:04:53,139 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,SelfDestructingSolverStorable7 [2025-02-07 21:04:53,139 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:53,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1642604059, now seen corresponding path program 6 times [2025-02-07 21:04:53,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:53,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013241936] [2025-02-07 21:04:53,140 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 21:04:53,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:53,145 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 146 statements into 21 equivalence classes. [2025-02-07 21:04:53,182 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) and asserted 130 of 146 statements. [2025-02-07 21:04:53,183 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2025-02-07 21:04:53,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 120 proven. 339 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2025-02-07 21:04:53,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:04:53,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013241936] [2025-02-07 21:04:53,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013241936] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:04:53,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869787059] [2025-02-07 21:04:53,893 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 21:04:53,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:53,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:04:53,895 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 21:04:53,898 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 21:04:53,936 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 146 statements into 21 equivalence classes. [2025-02-07 21:04:53,971 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) and asserted 130 of 146 statements. [2025-02-07 21:04:53,971 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2025-02-07 21:04:53,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:04:53,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-07 21:04:53,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:04:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 272 proven. 115 refuted. 0 times theorem prover too weak. 769 trivial. 0 not checked. [2025-02-07 21:04:54,169 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:04:57,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 333 proven. 69 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2025-02-07 21:04:57,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869787059] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:04:57,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:04:57,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 20] total 35 [2025-02-07 21:04:57,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155462606] [2025-02-07 21:04:57,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:04:57,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-07 21:04:57,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:04:57,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-07 21:04:57,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=995, Unknown=0, NotChecked=0, Total=1190 [2025-02-07 21:04:57,526 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 35 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (7), 1 states have call predecessors, (7), 9 states have return successors, (23), 22 states have call predecessors, (23), 6 states have call successors, (23) [2025-02-07 21:04:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:04:57,673 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2025-02-07 21:04:57,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-07 21:04:57,673 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (7), 1 states have call predecessors, (7), 9 states have return successors, (23), 22 states have call predecessors, (23), 6 states have call successors, (23) Word has length 146 [2025-02-07 21:04:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:04:57,678 INFO L225 Difference]: With dead ends: 69 [2025-02-07 21:04:57,678 INFO L226 Difference]: Without dead ends: 63 [2025-02-07 21:04:57,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 273 SyntacticMatches, 29 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=237, Invalid=1169, Unknown=0, NotChecked=0, Total=1406 [2025-02-07 21:04:57,679 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:04:57,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 394 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:04:57,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-07 21:04:57,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 48. [2025-02-07 21:04:57,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.0909090909090908) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 7 states have return successors, (18), 10 states have call predecessors, (18), 7 states have call successors, (18) [2025-02-07 21:04:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 61 transitions. [2025-02-07 21:04:57,691 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 61 transitions. Word has length 146 [2025-02-07 21:04:57,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:04:57,692 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 61 transitions. [2025-02-07 21:04:57,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 18 states have internal predecessors, (43), 6 states have call successors, (7), 1 states have call predecessors, (7), 9 states have return successors, (23), 22 states have call predecessors, (23), 6 states have call successors, (23) [2025-02-07 21:04:57,692 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 61 transitions. [2025-02-07 21:04:57,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-07 21:04:57,693 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:04:57,693 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1] [2025-02-07 21:04:57,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-07 21:04:57,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:04:57,894 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:04:57,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:04:57,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1698880807, now seen corresponding path program 7 times [2025-02-07 21:04:57,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:04:57,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218619803] [2025-02-07 21:04:57,895 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 21:04:57,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:04:57,903 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-07 21:04:57,916 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-07 21:04:57,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:57,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 21:04:57,920 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-07 21:04:57,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-07 21:04:57,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-07 21:04:57,934 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:04:57,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 21:04:57,951 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-07 21:04:57,951 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-07 21:04:57,952 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 21:04:57,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-07 21:04:57,955 INFO L422 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1] [2025-02-07 21:04:57,989 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 21:04:57,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 09:04:57 BoogieIcfgContainer [2025-02-07 21:04:57,991 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 21:04:57,992 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 21:04:57,992 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 21:04:57,992 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 21:04:57,993 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:04:47" (3/4) ... [2025-02-07 21:04:57,997 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-02-07 21:04:58,042 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 59. [2025-02-07 21:04:58,091 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-07 21:04:58,092 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-07 21:04:58,092 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 21:04:58,092 INFO L158 Benchmark]: Toolchain (without parser) took 11248.10ms. Allocated memory was 167.8MB in the beginning and 385.9MB in the end (delta: 218.1MB). Free memory was 123.5MB in the beginning and 267.8MB in the end (delta: -144.3MB). Peak memory consumption was 68.8MB. Max. memory is 16.1GB. [2025-02-07 21:04:58,092 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 209.7MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:04:58,093 INFO L158 Benchmark]: CACSL2BoogieTranslator took 114.28ms. Allocated memory is still 167.8MB. Free memory was 123.5MB in the beginning and 112.6MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 21:04:58,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.29ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 111.7MB in the end (delta: 945.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:04:58,093 INFO L158 Benchmark]: Boogie Preprocessor took 12.61ms. Allocated memory is still 167.8MB. Free memory was 111.7MB in the beginning and 110.7MB in the end (delta: 943.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:04:58,093 INFO L158 Benchmark]: IcfgBuilder took 145.29ms. Allocated memory is still 167.8MB. Free memory was 110.7MB in the beginning and 99.8MB in the end (delta: 10.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-07 21:04:58,093 INFO L158 Benchmark]: TraceAbstraction took 10856.21ms. Allocated memory was 167.8MB in the beginning and 385.9MB in the end (delta: 218.1MB). Free memory was 99.8MB in the beginning and 276.2MB in the end (delta: -176.4MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. [2025-02-07 21:04:58,094 INFO L158 Benchmark]: Witness Printer took 99.72ms. Allocated memory is still 385.9MB. Free memory was 276.2MB in the beginning and 267.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 21:04:58,095 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 209.7MB. Free memory is still 124.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 114.28ms. Allocated memory is still 167.8MB. Free memory was 123.5MB in the beginning and 112.6MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.29ms. Allocated memory is still 167.8MB. Free memory was 112.6MB in the beginning and 111.7MB in the end (delta: 945.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.61ms. Allocated memory is still 167.8MB. Free memory was 111.7MB in the beginning and 110.7MB in the end (delta: 943.4kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 145.29ms. Allocated memory is still 167.8MB. Free memory was 110.7MB in the beginning and 99.8MB in the end (delta: 10.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10856.21ms. Allocated memory was 167.8MB in the beginning and 385.9MB in the end (delta: 218.1MB). Free memory was 99.8MB in the beginning and 276.2MB in the end (delta: -176.4MB). Peak memory consumption was 35.2MB. Max. memory is 16.1GB. * Witness Printer took 99.72ms. Allocated memory is still 385.9MB. Free memory was 276.2MB in the beginning and 267.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 29]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] int x = 5; VAL [x=5] [L27] CALL, EXPR fibo(x) VAL [\old(n)=5] [L8] COND FALSE !(n < 1) VAL [\old(n)=5, n=5] [L10] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=4] [L8] COND FALSE !(n < 1) VAL [\old(n)=4, n=4] [L10] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=3] [L8] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L10] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1] [L13] RET, EXPR fibo(n-1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 [L9] return 0; VAL [\old(n)=0, \result=0] [L13] RET, EXPR fibo(n-2) VAL [\old(n)=2, n=2] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1] [L13] RET, EXPR fibo(n-2) VAL [\old(n)=3, n=3] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) VAL [\old(n)=4, n=4] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1] [L13] RET, EXPR fibo(n-1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 [L9] return 0; VAL [\old(n)=0, \result=0] [L13] RET, EXPR fibo(n-2) VAL [\old(n)=2, n=2] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) VAL [\old(n)=4, n=4] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) VAL [\old(n)=5, n=5] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=3] [L8] COND FALSE !(n < 1) VAL [\old(n)=3, n=3] [L10] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=2] [L8] COND FALSE !(n < 1) VAL [\old(n)=2, n=2] [L10] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-1) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1] [L13] RET, EXPR fibo(n-1) VAL [\old(n)=2, n=2] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=0] [L8] COND TRUE n < 1 [L9] return 0; VAL [\old(n)=0, \result=0] [L13] RET, EXPR fibo(n-2) VAL [\old(n)=2, n=2] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-1) VAL [\old(n)=3, n=3] [L13] CALL, EXPR fibo(n-2) VAL [\old(n)=1] [L8] COND FALSE !(n < 1) VAL [\old(n)=1, n=1] [L10] COND TRUE n == 1 [L11] return 1; VAL [\old(n)=1, \result=1] [L13] RET, EXPR fibo(n-2) VAL [\old(n)=3, n=3] [L13] return fibo(n-1) + fibo(n-2); [L13] RET, EXPR fibo(n-2) VAL [\old(n)=5, n=5] [L13] return fibo(n-1) + fibo(n-2); [L27] RET, EXPR fibo(x) VAL [x=5] [L27] int result = fibo(x); [L28] COND TRUE result == 5 VAL [x=5] [L29] reach_error() VAL [x=5] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.8s, OverallIterations: 10, TraceHistogramMax: 21, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 182 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 160 mSDsluCounter, 931 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 778 mSDsCounter, 199 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 896 IncrementalHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 199 mSolverCounterUnsat, 153 mSDtfsCounter, 896 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1090 GetRequests, 892 SyntacticMatches, 51 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1447 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=9, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 35 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 1070 NumberOfCodeBlocks, 936 NumberOfCodeBlocksAsserted, 75 NumberOfCheckSat, 1415 ConstructedInterpolants, 0 QuantifiedInterpolants, 2960 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1029 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 23 InterpolantComputations, 2 PerfectInterpolantSequences, 5372/6756 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2025-02-07 21:04:58,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE