./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive-simple/id_i10_o10-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursive-simple/id_i10_o10-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9dc175bed280c85fbc7018a36f57353cd7d8c459346c67f95db055f6ec935a28 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 21:05:17,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 21:05:17,805 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 21:05:17,810 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 21:05:17,810 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 21:05:17,838 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 21:05:17,839 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 21:05:17,839 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 21:05:17,840 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 21:05:17,841 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 21:05:17,841 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 21:05:17,842 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 21:05:17,842 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 21:05:17,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 21:05:17,842 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 21:05:17,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 21:05:17,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 21:05:17,843 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 21:05:17,843 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 21:05:17,843 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 21:05:17,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 21:05:17,843 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 21:05:17,844 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 21:05:17,844 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 21:05:17,844 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 21:05:17,844 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 21:05:17,844 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 21:05:17,844 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 21:05:17,844 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 21:05:17,844 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 21:05:17,845 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 21:05:17,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 21:05:17,845 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:05:17,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 21:05:17,846 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 21:05:17,846 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 21:05:17,846 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 21:05:17,846 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 21:05:17,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 21:05:17,846 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 21:05:17,846 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 21:05:17,847 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 21:05:17,847 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 21:05:17,847 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 -> 9dc175bed280c85fbc7018a36f57353cd7d8c459346c67f95db055f6ec935a28 [2025-02-07 21:05:18,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 21:05:18,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 21:05:18,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 21:05:18,160 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 21:05:18,161 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 21:05:18,162 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_i10_o10-1.c [2025-02-07 21:05:19,492 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3afe3c03d/3e211ab1c9474088b3085fb8d98b4cd3/FLAG5c1312c23 [2025-02-07 21:05:19,684 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 21:05:19,684 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_i10_o10-1.c [2025-02-07 21:05:19,712 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3afe3c03d/3e211ab1c9474088b3085fb8d98b4cd3/FLAG5c1312c23 [2025-02-07 21:05:19,745 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/3afe3c03d/3e211ab1c9474088b3085fb8d98b4cd3 [2025-02-07 21:05:19,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 21:05:19,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 21:05:19,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 21:05:19,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 21:05:19,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 21:05:19,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:19,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a428964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19, skipping insertion in model container [2025-02-07 21:05:19,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:19,793 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 21:05:19,924 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/id_i10_o10-1.c[454,467] [2025-02-07 21:05:19,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:05:19,940 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 21:05:19,951 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/id_i10_o10-1.c[454,467] [2025-02-07 21:05:19,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:05:19,964 INFO L204 MainTranslator]: Completed translation [2025-02-07 21:05:19,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19 WrapperNode [2025-02-07 21:05:19,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 21:05:19,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 21:05:19,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 21:05:19,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 21:05:19,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:19,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:19,990 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2025-02-07 21:05:19,991 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 21:05:19,992 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 21:05:19,992 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 21:05:19,992 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 21:05:19,999 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:20,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:20,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:20,008 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 21:05:20,009 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:20,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:20,015 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:20,016 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:20,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:20,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:20,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 21:05:20,019 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 21:05:20,020 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 21:05:20,020 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 21:05:20,020 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (1/1) ... [2025-02-07 21:05:20,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:05:20,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:05:20,053 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 21:05:20,058 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 21:05:20,075 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 21:05:20,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 21:05:20,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 21:05:20,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 21:05:20,075 INFO L130 BoogieDeclarations]: Found specification of procedure id [2025-02-07 21:05:20,075 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2025-02-07 21:05:20,114 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 21:05:20,116 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 21:05:20,217 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L8: havoc #t~ret4; [2025-02-07 21:05:20,225 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-02-07 21:05:20,226 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 21:05:20,236 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 21:05:20,237 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 21:05:20,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:05:20 BoogieIcfgContainer [2025-02-07 21:05:20,237 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 21:05:20,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 21:05:20,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 21:05:20,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 21:05:20,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 09:05:19" (1/3) ... [2025-02-07 21:05:20,245 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137c4f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:05:20, skipping insertion in model container [2025-02-07 21:05:20,245 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:05:19" (2/3) ... [2025-02-07 21:05:20,246 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137c4f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:05:20, skipping insertion in model container [2025-02-07 21:05:20,246 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:05:20" (3/3) ... [2025-02-07 21:05:20,247 INFO L128 eAbstractionObserver]: Analyzing ICFG id_i10_o10-1.c [2025-02-07 21:05:20,261 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 21:05:20,262 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG id_i10_o10-1.c that has 2 procedures, 15 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-07 21:05:20,312 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 21:05:20,325 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;@708668f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 21:05:20,325 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 21:05:20,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-07 21:05:20,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-07 21:05:20,337 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:05:20,338 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:05:20,338 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:05:20,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:05:20,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2049432346, now seen corresponding path program 1 times [2025-02-07 21:05:20,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:05:20,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366770630] [2025-02-07 21:05:20,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:05:20,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:05:20,415 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-07 21:05:20,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-07 21:05:20,431 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:05:20,431 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:20,538 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 21:05:20,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:05:20,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366770630] [2025-02-07 21:05:20,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366770630] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:05:20,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:05:20,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-07 21:05:20,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532179094] [2025-02-07 21:05:20,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:05:20,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-07 21:05:20,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:05:20,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-07 21:05:20,557 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-07 21:05:20,558 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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 21:05:20,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:05:20,597 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2025-02-07 21:05:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-07 21:05:20,599 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 21:05:20,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:05:20,603 INFO L225 Difference]: With dead ends: 24 [2025-02-07 21:05:20,603 INFO L226 Difference]: Without dead ends: 14 [2025-02-07 21:05:20,605 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 21:05:20,607 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:05:20,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:05:20,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-02-07 21:05:20,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2025-02-07 21:05:20,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-07 21:05:20,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2025-02-07 21:05:20,637 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2025-02-07 21:05:20,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:05:20,638 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2025-02-07 21:05:20,638 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 21:05:20,638 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2025-02-07 21:05:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-07 21:05:20,639 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:05:20,640 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:05:20,640 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 21:05:20,640 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:05:20,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:05:20,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1071660829, now seen corresponding path program 1 times [2025-02-07 21:05:20,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:05:20,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384501802] [2025-02-07 21:05:20,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:05:20,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:05:20,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-07 21:05:20,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-07 21:05:20,669 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:05:20,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 21:05:20,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:05:20,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384501802] [2025-02-07 21:05:20,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384501802] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:05:20,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723151215] [2025-02-07 21:05:20,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:05:20,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:05:20,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:05:20,784 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 21:05:20,786 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 21:05:20,813 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-07 21:05:20,831 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-07 21:05:20,832 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:05:20,832 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:20,833 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 21:05:20,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:05:20,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 21:05:20,913 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:05:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 21:05:21,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723151215] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:05:21,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:05:21,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 9 [2025-02-07 21:05:21,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314173079] [2025-02-07 21:05:21,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:05:21,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-07 21:05:21,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:05:21,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-07 21:05:21,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-07 21:05:21,122 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 21:05:21,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:05:21,165 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2025-02-07 21:05:21,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 21:05:21,166 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 15 [2025-02-07 21:05:21,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:05:21,167 INFO L225 Difference]: With dead ends: 21 [2025-02-07 21:05:21,167 INFO L226 Difference]: Without dead ends: 17 [2025-02-07 21:05:21,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 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 21:05:21,168 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:05:21,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 33 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:05:21,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2025-02-07 21:05:21,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2025-02-07 21:05:21,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-07 21:05:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2025-02-07 21:05:21,174 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2025-02-07 21:05:21,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:05:21,174 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2025-02-07 21:05:21,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-07 21:05:21,175 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2025-02-07 21:05:21,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-07 21:05:21,175 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:05:21,175 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:05:21,184 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 21:05:21,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:05:21,376 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:05:21,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:05:21,377 INFO L85 PathProgramCache]: Analyzing trace with hash 694941498, now seen corresponding path program 2 times [2025-02-07 21:05:21,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:05:21,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079761649] [2025-02-07 21:05:21,377 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:05:21,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:05:21,383 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-07 21:05:21,390 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-07 21:05:21,390 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:05:21,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-07 21:05:21,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:05:21,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079761649] [2025-02-07 21:05:21,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079761649] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:05:21,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414783014] [2025-02-07 21:05:21,572 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:05:21,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:05:21,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:05:21,574 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 21:05:21,577 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 21:05:21,600 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-07 21:05:21,612 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-07 21:05:21,612 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:05:21,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:21,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 21:05:21,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:05:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-07 21:05:21,655 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:05:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-07 21:05:21,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414783014] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:05:21,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:05:21,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 13 [2025-02-07 21:05:22,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941096567] [2025-02-07 21:05:22,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:05:22,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 21:05:22,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:05:22,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 21:05:22,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-02-07 21:05:22,001 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 13 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2025-02-07 21:05:22,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:05:22,078 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2025-02-07 21:05:22,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-07 21:05:22,079 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 21 [2025-02-07 21:05:22,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:05:22,080 INFO L225 Difference]: With dead ends: 24 [2025-02-07 21:05:22,080 INFO L226 Difference]: Without dead ends: 20 [2025-02-07 21:05:22,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2025-02-07 21:05:22,081 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:05:22,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 49 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:05:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-07 21:05:22,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-02-07 21:05:22,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-07 21:05:22,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2025-02-07 21:05:22,088 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 21 [2025-02-07 21:05:22,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:05:22,088 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2025-02-07 21:05:22,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2025-02-07 21:05:22,088 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2025-02-07 21:05:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-07 21:05:22,091 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:05:22,092 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:05:22,099 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 21:05:22,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:05:22,292 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:05:22,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:05:22,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1868965309, now seen corresponding path program 3 times [2025-02-07 21:05:22,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:05:22,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830235114] [2025-02-07 21:05:22,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:05:22,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:05:22,300 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-02-07 21:05:22,311 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 21:05:22,311 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 21:05:22,311 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-07 21:05:22,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:05:22,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830235114] [2025-02-07 21:05:22,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830235114] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:05:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036026260] [2025-02-07 21:05:22,496 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:05:22,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:05:22,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:05:22,498 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 21:05:22,500 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 21:05:22,526 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-02-07 21:05:22,538 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-02-07 21:05:22,538 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-07 21:05:22,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:22,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-07 21:05:22,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:05:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-07 21:05:22,626 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:05:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:05:23,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036026260] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:05:23,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:05:23,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 11] total 17 [2025-02-07 21:05:23,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098939220] [2025-02-07 21:05:23,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:05:23,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-07 21:05:23,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:05:23,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-07 21:05:23,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-02-07 21:05:23,144 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 17 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-07 21:05:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:05:23,242 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2025-02-07 21:05:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 21:05:23,243 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) Word has length 27 [2025-02-07 21:05:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:05:23,245 INFO L225 Difference]: With dead ends: 27 [2025-02-07 21:05:23,245 INFO L226 Difference]: Without dead ends: 23 [2025-02-07 21:05:23,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2025-02-07 21:05:23,246 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:05:23,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 49 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:05:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-07 21:05:23,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-02-07 21:05:23,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-07 21:05:23,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2025-02-07 21:05:23,254 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 27 [2025-02-07 21:05:23,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:05:23,254 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2025-02-07 21:05:23,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 7 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 7 states have call successors, (10) [2025-02-07 21:05:23,254 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2025-02-07 21:05:23,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-07 21:05:23,255 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:05:23,255 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:05:23,262 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 21:05:23,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:05:23,459 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:05:23,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:05:23,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1787489114, now seen corresponding path program 4 times [2025-02-07 21:05:23,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:05:23,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099208124] [2025-02-07 21:05:23,460 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:05:23,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:05:23,465 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-07 21:05:23,470 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 21:05:23,470 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 21:05:23,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:23,721 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-07 21:05:23,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:05:23,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099208124] [2025-02-07 21:05:23,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099208124] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:05:23,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872099235] [2025-02-07 21:05:23,722 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:05:23,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:05:23,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:05:23,727 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 21:05:23,730 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 21:05:23,763 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-07 21:05:23,778 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-02-07 21:05:23,778 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 21:05:23,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:23,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 21:05:23,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:05:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2025-02-07 21:05:23,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:05:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2025-02-07 21:05:24,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872099235] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:05:24,708 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:05:24,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 26 [2025-02-07 21:05:24,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053013947] [2025-02-07 21:05:24,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:05:24,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-07 21:05:24,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:05:24,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-07 21:05:24,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2025-02-07 21:05:24,710 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 26 states, 24 states have (on average 1.75) internal successors, (42), 21 states have internal predecessors, (42), 8 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (15), 10 states have call predecessors, (15), 8 states have call successors, (15) [2025-02-07 21:05:24,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:05:24,905 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2025-02-07 21:05:24,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-07 21:05:24,906 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 1.75) internal successors, (42), 21 states have internal predecessors, (42), 8 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (15), 10 states have call predecessors, (15), 8 states have call successors, (15) Word has length 33 [2025-02-07 21:05:24,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:05:24,907 INFO L225 Difference]: With dead ends: 30 [2025-02-07 21:05:24,907 INFO L226 Difference]: Without dead ends: 26 [2025-02-07 21:05:24,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=229, Invalid=961, Unknown=0, NotChecked=0, Total=1190 [2025-02-07 21:05:24,909 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:05:24,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 92 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:05:24,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-02-07 21:05:24,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2025-02-07 21:05:24,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2025-02-07 21:05:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2025-02-07 21:05:24,919 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 33 [2025-02-07 21:05:24,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:05:24,919 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2025-02-07 21:05:24,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 1.75) internal successors, (42), 21 states have internal predecessors, (42), 8 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (15), 10 states have call predecessors, (15), 8 states have call successors, (15) [2025-02-07 21:05:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2025-02-07 21:05:24,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-07 21:05:24,921 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:05:24,921 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:05:24,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 21:05:25,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:05:25,123 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:05:25,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:05:25,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1631050659, now seen corresponding path program 5 times [2025-02-07 21:05:25,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:05:25,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63433797] [2025-02-07 21:05:25,124 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:05:25,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:05:25,129 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 6 equivalence classes. [2025-02-07 21:05:25,136 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-02-07 21:05:25,136 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 21:05:25,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:25,324 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 21:05:25,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:05:25,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63433797] [2025-02-07 21:05:25,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63433797] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:05:25,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147799016] [2025-02-07 21:05:25,325 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:05:25,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:05:25,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:05:25,329 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 21:05:25,331 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 21:05:25,365 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 39 statements into 6 equivalence classes. [2025-02-07 21:05:25,380 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-02-07 21:05:25,380 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-07 21:05:25,380 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:25,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-07 21:05:25,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:05:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 21:05:25,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:05:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-07 21:05:26,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147799016] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:05:26,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:05:26,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 15] total 30 [2025-02-07 21:05:26,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787554094] [2025-02-07 21:05:26,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:05:26,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-07 21:05:26,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:05:26,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-07 21:05:26,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2025-02-07 21:05:26,592 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 30 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (10), 1 states have call predecessors, (10), 12 states have return successors, (18), 12 states have call predecessors, (18), 9 states have call successors, (18) [2025-02-07 21:05:26,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:05:26,808 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2025-02-07 21:05:26,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-07 21:05:26,808 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (10), 1 states have call predecessors, (10), 12 states have return successors, (18), 12 states have call predecessors, (18), 9 states have call successors, (18) Word has length 39 [2025-02-07 21:05:26,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:05:26,809 INFO L225 Difference]: With dead ends: 33 [2025-02-07 21:05:26,809 INFO L226 Difference]: Without dead ends: 29 [2025-02-07 21:05:26,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=315, Invalid=1325, Unknown=0, NotChecked=0, Total=1640 [2025-02-07 21:05:26,811 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 57 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:05:26,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 94 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:05:26,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-02-07 21:05:26,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2025-02-07 21:05:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2025-02-07 21:05:26,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2025-02-07 21:05:26,816 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 39 [2025-02-07 21:05:26,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:05:26,816 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2025-02-07 21:05:26,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 1.7142857142857142) internal successors, (48), 24 states have internal predecessors, (48), 9 states have call successors, (10), 1 states have call predecessors, (10), 12 states have return successors, (18), 12 states have call predecessors, (18), 9 states have call successors, (18) [2025-02-07 21:05:26,816 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2025-02-07 21:05:26,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-07 21:05:26,817 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:05:26,817 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:05:26,825 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 21:05:27,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:05:27,022 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:05:27,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:05:27,022 INFO L85 PathProgramCache]: Analyzing trace with hash -488982662, now seen corresponding path program 6 times [2025-02-07 21:05:27,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:05:27,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482965520] [2025-02-07 21:05:27,023 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 21:05:27,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:05:27,028 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 7 equivalence classes. [2025-02-07 21:05:27,037 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 45 of 45 statements. [2025-02-07 21:05:27,037 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 21:05:27,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:27,199 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 73 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2025-02-07 21:05:27,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:05:27,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482965520] [2025-02-07 21:05:27,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482965520] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:05:27,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537063739] [2025-02-07 21:05:27,200 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 21:05:27,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:05:27,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:05:27,202 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 21:05:27,205 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 21:05:27,254 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 45 statements into 7 equivalence classes. [2025-02-07 21:05:27,272 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 45 of 45 statements. [2025-02-07 21:05:27,272 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 21:05:27,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:05:27,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-07 21:05:27,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:05:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-07 21:05:27,441 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:05:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-07 21:05:28,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537063739] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:05:28,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:05:28,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 36 [2025-02-07 21:05:28,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886594157] [2025-02-07 21:05:28,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:05:28,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-07 21:05:28,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:05:28,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-07 21:05:28,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2025-02-07 21:05:28,677 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (5), 1 states have call predecessors, (5), 17 states have return successors, (18), 18 states have call predecessors, (18), 4 states have call successors, (18) [2025-02-07 21:05:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:05:29,133 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2025-02-07 21:05:29,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-07 21:05:29,134 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (5), 1 states have call predecessors, (5), 17 states have return successors, (18), 18 states have call predecessors, (18), 4 states have call successors, (18) Word has length 45 [2025-02-07 21:05:29,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:05:29,134 INFO L225 Difference]: With dead ends: 47 [2025-02-07 21:05:29,134 INFO L226 Difference]: Without dead ends: 41 [2025-02-07 21:05:29,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 65 SyntacticMatches, 7 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=518, Invalid=2788, Unknown=0, NotChecked=0, Total=3306 [2025-02-07 21:05:29,136 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 63 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:05:29,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 89 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:05:29,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-07 21:05:29,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-02-07 21:05:29,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (12), 11 states have call predecessors, (12), 2 states have call successors, (12) [2025-02-07 21:05:29,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2025-02-07 21:05:29,143 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 45 [2025-02-07 21:05:29,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:05:29,143 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2025-02-07 21:05:29,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.457142857142857) internal successors, (51), 25 states have internal predecessors, (51), 4 states have call successors, (5), 1 states have call predecessors, (5), 17 states have return successors, (18), 18 states have call predecessors, (18), 4 states have call successors, (18) [2025-02-07 21:05:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2025-02-07 21:05:29,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-07 21:05:29,145 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:05:29,145 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:05:29,151 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 21:05:29,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-07 21:05:29,346 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:05:29,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:05:29,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1612392518, now seen corresponding path program 7 times [2025-02-07 21:05:29,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:05:29,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782566632] [2025-02-07 21:05:29,347 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 21:05:29,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:05:29,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-07 21:05:29,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-07 21:05:29,368 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:05:29,368 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 21:05:29,369 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-02-07 21:05:29,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-07 21:05:29,383 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-07 21:05:29,384 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:05:29,384 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-02-07 21:05:29,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-02-07 21:05:29,400 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-02-07 21:05:29,401 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-02-07 21:05:29,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-07 21:05:29,406 INFO L422 BasicCegarLoop]: Path program histogram: [7, 1] [2025-02-07 21:05:29,429 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-07 21:05:29,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 09:05:29 BoogieIcfgContainer [2025-02-07 21:05:29,436 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-07 21:05:29,437 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-07 21:05:29,437 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-07 21:05:29,437 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-07 21:05:29,438 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:05:20" (3/4) ... [2025-02-07 21:05:29,439 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-02-07 21:05:29,485 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 35. [2025-02-07 21:05:29,547 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-07 21:05:29,550 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-07 21:05:29,550 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-07 21:05:29,551 INFO L158 Benchmark]: Toolchain (without parser) took 9802.05ms. Allocated memory was 553.6MB in the beginning and 142.6MB in the end (delta: -411.0MB). Free memory was 525.4MB in the beginning and 47.0MB in the end (delta: 478.4MB). Peak memory consumption was 60.6MB. Max. memory is 16.1GB. [2025-02-07 21:05:29,551 INFO L158 Benchmark]: CDTParser took 1.21ms. Allocated memory is still 201.3MB. Free memory is still 124.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:05:29,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.99ms. Allocated memory was 553.6MB in the beginning and 142.6MB in the end (delta: -411.0MB). Free memory was 525.4MB in the beginning and 103.8MB in the end (delta: 421.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 21:05:29,551 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.42ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 102.8MB in the end (delta: 914.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:05:29,551 INFO L158 Benchmark]: Boogie Preprocessor took 25.23ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 101.9MB in the end (delta: 975.7kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:05:29,552 INFO L158 Benchmark]: IcfgBuilder took 217.86ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 91.6MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-07 21:05:29,552 INFO L158 Benchmark]: TraceAbstraction took 9196.98ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 52.5MB in the end (delta: 38.6MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. [2025-02-07 21:05:29,552 INFO L158 Benchmark]: Witness Printer took 113.20ms. Allocated memory is still 142.6MB. Free memory was 52.5MB in the beginning and 47.0MB in the end (delta: 5.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-07 21:05:29,553 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21ms. Allocated memory is still 201.3MB. Free memory is still 124.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 213.99ms. Allocated memory was 553.6MB in the beginning and 142.6MB in the end (delta: -411.0MB). Free memory was 525.4MB in the beginning and 103.8MB in the end (delta: 421.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.42ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 102.8MB in the end (delta: 914.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.23ms. Allocated memory is still 142.6MB. Free memory was 102.8MB in the beginning and 101.9MB in the end (delta: 975.7kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 217.86ms. Allocated memory is still 142.6MB. Free memory was 101.9MB in the beginning and 91.6MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 9196.98ms. Allocated memory is still 142.6MB. Free memory was 91.1MB in the beginning and 52.5MB in the end (delta: 38.6MB). Peak memory consumption was 43.8MB. Max. memory is 16.1GB. * Witness Printer took 113.20ms. Allocated memory is still 142.6MB. Free memory was 52.5MB in the beginning and 47.0MB in the end (delta: 5.5MB). There was no memory consumed. 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: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int input = 10; VAL [input=10] [L13] CALL, EXPR id(input) VAL [\old(x)=10] [L7] COND FALSE !(x==0) VAL [\old(x)=10, x=10] [L8] CALL, EXPR id(x-1) VAL [\old(x)=9] [L7] COND FALSE !(x==0) VAL [\old(x)=9, x=9] [L8] CALL, EXPR id(x-1) VAL [\old(x)=8] [L7] COND FALSE !(x==0) VAL [\old(x)=8, x=8] [L8] CALL, EXPR id(x-1) VAL [\old(x)=7] [L7] COND FALSE !(x==0) VAL [\old(x)=7, x=7] [L8] CALL, EXPR id(x-1) VAL [\old(x)=6] [L7] COND FALSE !(x==0) VAL [\old(x)=6, x=6] [L8] CALL, EXPR id(x-1) VAL [\old(x)=5] [L7] COND FALSE !(x==0) VAL [\old(x)=5, x=5] [L8] CALL, EXPR id(x-1) VAL [\old(x)=4] [L7] COND FALSE !(x==0) VAL [\old(x)=4, x=4] [L8] CALL, EXPR id(x-1) VAL [\old(x)=3] [L7] COND FALSE !(x==0) VAL [\old(x)=3, x=3] [L8] CALL, EXPR id(x-1) VAL [\old(x)=2] [L7] COND FALSE !(x==0) VAL [\old(x)=2, x=2] [L8] CALL, EXPR id(x-1) VAL [\old(x)=1] [L7] COND FALSE !(x==0) VAL [\old(x)=1, x=1] [L8] CALL, EXPR id(x-1) VAL [\old(x)=0] [L7] COND TRUE x==0 [L7] return 0; VAL [\old(x)=0, \result=0] [L8] RET, EXPR id(x-1) VAL [\old(x)=1, x=1] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=2, x=2] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=3, x=3] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=4, x=4] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=5, x=5] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=6, x=6] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=7, x=7] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=8, x=8] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=9, x=9] [L8] return id(x-1) + 1; [L8] RET, EXPR id(x-1) VAL [\old(x)=10, x=10] [L8] return id(x-1) + 1; [L13] RET, EXPR id(input) VAL [input=10] [L13] int result = id(input); [L14] COND TRUE result == 10 VAL [input=10] [L15] reach_error() VAL [input=10] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.1s, OverallIterations: 8, TraceHistogramMax: 11, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 211 mSDsluCounter, 455 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 385 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 457 IncrementalHoareTripleChecker+Invalid, 558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 70 mSDtfsCounter, 457 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 476 GetRequests, 277 SyntacticMatches, 27 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1496 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=7, InterpolantAutomatonStates: 79, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 438 NumberOfCodeBlocks, 438 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 530 ConstructedInterpolants, 0 QuantifiedInterpolants, 1396 SizeOfPredicates, 15 NumberOfNonLiveVariables, 552 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 361/882 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 21:05:29,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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