./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-tiling/rewnifrev.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-tiling/rewnifrev.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 62ffb246c1e6cc2a3d3d5a08bb5a65a9894a173aba5be4caac9150f1d27ccfed --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 10:08:59,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 10:08:59,904 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 10:08:59,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 10:08:59,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 10:08:59,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 10:08:59,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 10:08:59,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 10:08:59,929 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 10:08:59,929 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 10:08:59,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 10:08:59,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 10:08:59,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 10:08:59,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 10:08:59,931 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 10:08:59,931 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 10:08:59,931 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 10:08:59,931 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 10:08:59,931 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 10:08:59,931 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 10:08:59,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 10:08:59,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 10:08:59,932 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 10:08:59,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 10:08:59,932 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 10:08:59,932 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 10:08:59,932 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 10:08:59,932 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 10:08:59,932 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 10:08:59,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 10:08:59,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 10:08:59,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 10:08:59,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:08:59,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 10:08:59,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 10:08:59,933 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 10:08:59,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 10:08:59,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 10:08:59,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 10:08:59,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 10:08:59,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 10:08:59,933 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 10:08:59,933 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 10:08:59,933 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 -> 62ffb246c1e6cc2a3d3d5a08bb5a65a9894a173aba5be4caac9150f1d27ccfed [2025-02-05 10:09:00,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 10:09:00,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 10:09:00,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 10:09:00,165 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 10:09:00,165 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 10:09:00,166 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-tiling/rewnifrev.c [2025-02-05 10:09:01,304 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de8ffd4f5/282a6bc31f904d8984c24cd34fed5c32/FLAG235b537e7 [2025-02-05 10:09:01,514 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 10:09:01,520 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-tiling/rewnifrev.c [2025-02-05 10:09:01,525 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de8ffd4f5/282a6bc31f904d8984c24cd34fed5c32/FLAG235b537e7 [2025-02-05 10:09:01,537 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/de8ffd4f5/282a6bc31f904d8984c24cd34fed5c32 [2025-02-05 10:09:01,539 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 10:09:01,540 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 10:09:01,540 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 10:09:01,540 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 10:09:01,543 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 10:09:01,544 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,544 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d5ee1f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01, skipping insertion in model container [2025-02-05 10:09:01,544 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,553 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 10:09:01,651 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/array-tiling/rewnifrev.c[400,413] [2025-02-05 10:09:01,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:09:01,672 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 10:09:01,680 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/array-tiling/rewnifrev.c[400,413] [2025-02-05 10:09:01,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 10:09:01,698 INFO L204 MainTranslator]: Completed translation [2025-02-05 10:09:01,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01 WrapperNode [2025-02-05 10:09:01,699 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 10:09:01,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 10:09:01,700 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 10:09:01,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 10:09:01,704 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,709 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,720 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2025-02-05 10:09:01,721 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 10:09:01,722 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 10:09:01,722 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 10:09:01,722 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 10:09:01,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,729 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,740 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2025-02-05 10:09:01,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,741 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,743 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,743 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,746 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 10:09:01,749 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 10:09:01,750 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 10:09:01,750 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 10:09:01,751 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (1/1) ... [2025-02-05 10:09:01,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 10:09:01,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:01,777 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-05 10:09:01,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-05 10:09:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 10:09:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 10:09:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 10:09:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 10:09:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 10:09:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-05 10:09:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 10:09:01,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 10:09:01,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 10:09:01,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 10:09:01,849 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 10:09:01,850 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 10:09:01,963 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2025-02-05 10:09:01,964 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 10:09:01,970 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 10:09:01,970 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 10:09:01,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:09:01 BoogieIcfgContainer [2025-02-05 10:09:01,971 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 10:09:01,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 10:09:01,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 10:09:01,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 10:09:01,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 10:09:01" (1/3) ... [2025-02-05 10:09:01,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d5ba81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:09:01, skipping insertion in model container [2025-02-05 10:09:01,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 10:09:01" (2/3) ... [2025-02-05 10:09:01,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46d5ba81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 10:09:01, skipping insertion in model container [2025-02-05 10:09:01,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 10:09:01" (3/3) ... [2025-02-05 10:09:01,981 INFO L128 eAbstractionObserver]: Analyzing ICFG rewnifrev.c [2025-02-05 10:09:01,993 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 10:09:01,994 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG rewnifrev.c that has 1 procedures, 15 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-05 10:09:02,030 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 10:09:02,038 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;@4e2e17a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 10:09:02,040 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 10:09:02,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:02,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-05 10:09:02,047 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:02,048 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:02,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:02,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:02,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1038862573, now seen corresponding path program 1 times [2025-02-05 10:09:02,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:02,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158544320] [2025-02-05 10:09:02,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:09:02,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:02,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-05 10:09:02,118 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-05 10:09:02,118 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:09:02,118 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:02,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:02,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:02,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158544320] [2025-02-05 10:09:02,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158544320] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:09:02,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:09:02,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 10:09:02,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635415417] [2025-02-05 10:09:02,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:09:02,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 10:09:02,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:02,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 10:09:02,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:09:02,229 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:02,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:02,254 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2025-02-05 10:09:02,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 10:09:02,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-05 10:09:02,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:02,259 INFO L225 Difference]: With dead ends: 30 [2025-02-05 10:09:02,260 INFO L226 Difference]: Without dead ends: 14 [2025-02-05 10:09:02,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 10:09:02,263 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:02,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 22 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:09:02,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2025-02-05 10:09:02,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2025-02-05 10:09:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:02,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2025-02-05 10:09:02,286 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2025-02-05 10:09:02,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:02,286 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2025-02-05 10:09:02,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:02,287 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2025-02-05 10:09:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-05 10:09:02,287 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:02,287 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:02,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 10:09:02,287 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:02,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:02,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1434665732, now seen corresponding path program 1 times [2025-02-05 10:09:02,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:02,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696286691] [2025-02-05 10:09:02,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:09:02,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:02,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-05 10:09:02,303 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-05 10:09:02,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:09:02,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:02,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:02,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:02,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696286691] [2025-02-05 10:09:02,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696286691] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:09:02,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:09:02,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-05 10:09:02,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345667655] [2025-02-05 10:09:02,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:09:02,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 10:09:02,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:02,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 10:09:02,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:09:02,368 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:02,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:02,396 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2025-02-05 10:09:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 10:09:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-05 10:09:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:02,397 INFO L225 Difference]: With dead ends: 25 [2025-02-05 10:09:02,397 INFO L226 Difference]: Without dead ends: 20 [2025-02-05 10:09:02,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-05 10:09:02,398 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 12 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:02,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 14 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:09:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-05 10:09:02,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 15. [2025-02-05 10:09:02,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:02,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2025-02-05 10:09:02,402 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 10 [2025-02-05 10:09:02,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:02,402 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2025-02-05 10:09:02,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:02,402 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2025-02-05 10:09:02,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-05 10:09:02,402 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:02,402 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:02,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 10:09:02,403 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:02,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1533873364, now seen corresponding path program 1 times [2025-02-05 10:09:02,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:02,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990832863] [2025-02-05 10:09:02,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:09:02,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:02,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-05 10:09:02,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-05 10:09:02,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:09:02,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 10:09:02,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:02,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990832863] [2025-02-05 10:09:02,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990832863] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 10:09:02,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 10:09:02,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-05 10:09:02,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790771416] [2025-02-05 10:09:02,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 10:09:02,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-05 10:09:02,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:02,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-05 10:09:02,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2025-02-05 10:09:02,745 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:02,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:02,815 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2025-02-05 10:09:02,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-05 10:09:02,816 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-05 10:09:02,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:02,816 INFO L225 Difference]: With dead ends: 22 [2025-02-05 10:09:02,816 INFO L226 Difference]: Without dead ends: 20 [2025-02-05 10:09:02,816 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2025-02-05 10:09:02,817 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:02,817 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 17 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:09:02,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-02-05 10:09:02,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2025-02-05 10:09:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2025-02-05 10:09:02,819 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 13 [2025-02-05 10:09:02,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:02,819 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2025-02-05 10:09:02,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2025-02-05 10:09:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-05 10:09:02,820 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:02,820 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:02,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 10:09:02,820 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:02,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:02,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1463451969, now seen corresponding path program 1 times [2025-02-05 10:09:02,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:02,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673586602] [2025-02-05 10:09:02,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:09:02,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:02,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-05 10:09:02,838 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 10:09:02,839 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:09:02,839 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:03,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:03,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:03,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673586602] [2025-02-05 10:09:03,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673586602] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:03,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682690252] [2025-02-05 10:09:03,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 10:09:03,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:03,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:03,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:03,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-05 10:09:03,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-05 10:09:03,128 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-05 10:09:03,128 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:09:03,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:03,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-05 10:09:03,132 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:03,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2025-02-05 10:09:03,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2025-02-05 10:09:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:03,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:03,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:03,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682690252] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:03,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:03,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-02-05 10:09:03,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262477496] [2025-02-05 10:09:03,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:03,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-05 10:09:03,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:03,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-05 10:09:03,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2025-02-05 10:09:03,436 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:03,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:03,601 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2025-02-05 10:09:03,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-05 10:09:03,602 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-05 10:09:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:03,603 INFO L225 Difference]: With dead ends: 27 [2025-02-05 10:09:03,603 INFO L226 Difference]: Without dead ends: 25 [2025-02-05 10:09:03,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=471, Unknown=0, NotChecked=0, Total=650 [2025-02-05 10:09:03,604 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 38 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:03,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 25 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:09:03,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-02-05 10:09:03,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20. [2025-02-05 10:09:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2025-02-05 10:09:03,610 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2025-02-05 10:09:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:03,610 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2025-02-05 10:09:03,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:03,611 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2025-02-05 10:09:03,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-05 10:09:03,611 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:03,611 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:03,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 10:09:03,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:03,816 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:03,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash 516286028, now seen corresponding path program 2 times [2025-02-05 10:09:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:03,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710297032] [2025-02-05 10:09:03,817 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:09:03,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:03,823 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-05 10:09:03,830 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 10:09:03,831 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:09:03,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:03,889 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:03,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:03,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710297032] [2025-02-05 10:09:03,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710297032] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:03,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065694376] [2025-02-05 10:09:03,889 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:09:03,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:03,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:03,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:03,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-05 10:09:03,925 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 19 statements into 2 equivalence classes. [2025-02-05 10:09:03,936 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 19 of 19 statements. [2025-02-05 10:09:03,936 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:09:03,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:03,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-05 10:09:03,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:04,004 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:04,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:04,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065694376] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:04,060 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:04,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 12 [2025-02-05 10:09:04,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136584554] [2025-02-05 10:09:04,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:04,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-05 10:09:04,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:04,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-05 10:09:04,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2025-02-05 10:09:04,061 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:04,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:04,123 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2025-02-05 10:09:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 10:09:04,125 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-05 10:09:04,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:04,125 INFO L225 Difference]: With dead ends: 42 [2025-02-05 10:09:04,125 INFO L226 Difference]: Without dead ends: 24 [2025-02-05 10:09:04,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=91, Unknown=0, NotChecked=0, Total=156 [2025-02-05 10:09:04,125 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 5 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:04,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 23 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 10:09:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-05 10:09:04,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2025-02-05 10:09:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:04,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2025-02-05 10:09:04,132 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 19 [2025-02-05 10:09:04,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:04,132 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2025-02-05 10:09:04,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 12 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:04,132 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2025-02-05 10:09:04,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 10:09:04,133 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:04,133 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:04,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-05 10:09:04,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:04,334 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:04,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:04,334 INFO L85 PathProgramCache]: Analyzing trace with hash 255212507, now seen corresponding path program 3 times [2025-02-05 10:09:04,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:04,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198376729] [2025-02-05 10:09:04,334 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:09:04,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:04,344 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 4 equivalence classes. [2025-02-05 10:09:04,362 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 10:09:04,363 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 10:09:04,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:04,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:04,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198376729] [2025-02-05 10:09:04,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198376729] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:04,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531896880] [2025-02-05 10:09:04,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:09:04,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:04,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:04,749 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:04,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-05 10:09:04,781 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 4 equivalence classes. [2025-02-05 10:09:04,796 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 22 of 22 statements. [2025-02-05 10:09:04,796 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-05 10:09:04,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:04,797 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-05 10:09:04,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:04,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2025-02-05 10:09:04,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2025-02-05 10:09:04,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:04,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2025-02-05 10:09:05,006 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:05,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 33 [2025-02-05 10:09:05,370 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:05,371 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:05,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531896880] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:05,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:05,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 12] total 31 [2025-02-05 10:09:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814404864] [2025-02-05 10:09:05,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:05,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-05 10:09:05,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:05,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-05 10:09:05,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=694, Unknown=0, NotChecked=0, Total=930 [2025-02-05 10:09:05,596 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:06,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:06,292 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2025-02-05 10:09:06,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-05 10:09:06,293 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-05 10:09:06,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:06,293 INFO L225 Difference]: With dead ends: 67 [2025-02-05 10:09:06,293 INFO L226 Difference]: Without dead ends: 44 [2025-02-05 10:09:06,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=682, Invalid=1768, Unknown=0, NotChecked=0, Total=2450 [2025-02-05 10:09:06,295 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 75 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:06,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 31 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 10:09:06,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-05 10:09:06,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2025-02-05 10:09:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2025-02-05 10:09:06,305 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 22 [2025-02-05 10:09:06,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:06,305 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2025-02-05 10:09:06,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.903225806451613) internal successors, (59), 31 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:06,305 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2025-02-05 10:09:06,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-05 10:09:06,306 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:06,306 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:06,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 10:09:06,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:06,511 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:06,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:06,511 INFO L85 PathProgramCache]: Analyzing trace with hash 319058431, now seen corresponding path program 4 times [2025-02-05 10:09:06,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:06,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696611344] [2025-02-05 10:09:06,512 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:09:06,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:06,520 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-02-05 10:09:06,532 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-02-05 10:09:06,532 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:09:06,532 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:06,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:06,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696611344] [2025-02-05 10:09:06,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696611344] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:06,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607867523] [2025-02-05 10:09:06,876 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:09:06,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:06,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:06,878 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:06,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-05 10:09:06,906 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 28 statements into 2 equivalence classes. [2025-02-05 10:09:06,915 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 25 of 28 statements. [2025-02-05 10:09:06,915 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:09:06,916 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:06,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-05 10:09:06,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:06,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2025-02-05 10:09:06,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2025-02-05 10:09:06,955 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:06,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 48 [2025-02-05 10:09:06,994 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:06,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 65 [2025-02-05 10:09:07,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:07,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 68 [2025-02-05 10:09:07,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:07,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 49 [2025-02-05 10:09:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:07,389 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:07,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607867523] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:07,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:07,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 27 [2025-02-05 10:09:07,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76139206] [2025-02-05 10:09:07,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:07,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-05 10:09:07,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:07,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-05 10:09:07,510 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2025-02-05 10:09:07,510 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:08,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:08,080 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2025-02-05 10:09:08,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-05 10:09:08,081 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-02-05 10:09:08,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:08,082 INFO L225 Difference]: With dead ends: 73 [2025-02-05 10:09:08,082 INFO L226 Difference]: Without dead ends: 71 [2025-02-05 10:09:08,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 39 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=527, Invalid=1729, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 10:09:08,085 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 65 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:08,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 52 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 10:09:08,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-05 10:09:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 35. [2025-02-05 10:09:08,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:08,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2025-02-05 10:09:08,093 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 28 [2025-02-05 10:09:08,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:08,093 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2025-02-05 10:09:08,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:08,093 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2025-02-05 10:09:08,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-05 10:09:08,094 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:08,094 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:08,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 10:09:08,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2025-02-05 10:09:08,298 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:08,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:08,298 INFO L85 PathProgramCache]: Analyzing trace with hash 307964684, now seen corresponding path program 5 times [2025-02-05 10:09:08,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:08,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772552701] [2025-02-05 10:09:08,298 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:09:08,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:08,312 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 5 equivalence classes. [2025-02-05 10:09:08,325 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:09:08,325 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 10:09:08,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:08,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:08,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772552701] [2025-02-05 10:09:08,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772552701] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114394149] [2025-02-05 10:09:08,385 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:09:08,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:08,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:08,386 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:08,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-05 10:09:08,419 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 31 statements into 5 equivalence classes. [2025-02-05 10:09:08,445 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 31 of 31 statements. [2025-02-05 10:09:08,445 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-05 10:09:08,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:08,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-05 10:09:08,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 26 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:08,517 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:08,667 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 33 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:08,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114394149] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:08,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:08,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 17 [2025-02-05 10:09:08,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487430995] [2025-02-05 10:09:08,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:08,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-05 10:09:08,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:08,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-05 10:09:08,668 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2025-02-05 10:09:08,668 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:08,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:08,761 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2025-02-05 10:09:08,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 10:09:08,762 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-02-05 10:09:08,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:08,762 INFO L225 Difference]: With dead ends: 68 [2025-02-05 10:09:08,762 INFO L226 Difference]: Without dead ends: 36 [2025-02-05 10:09:08,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=200, Unknown=0, NotChecked=0, Total=342 [2025-02-05 10:09:08,763 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:08,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 35 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:09:08,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-05 10:09:08,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2025-02-05 10:09:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:08,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2025-02-05 10:09:08,767 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 31 [2025-02-05 10:09:08,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:08,769 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2025-02-05 10:09:08,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 17 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:08,769 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2025-02-05 10:09:08,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-05 10:09:08,770 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:08,771 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:08,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 10:09:08,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:08,971 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:08,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1759206885, now seen corresponding path program 6 times [2025-02-05 10:09:08,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:08,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422455076] [2025-02-05 10:09:08,972 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:09:08,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:08,982 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 6 equivalence classes. [2025-02-05 10:09:08,998 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:09:08,998 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-05 10:09:08,998 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:09,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:09,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422455076] [2025-02-05 10:09:09,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422455076] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:09,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767618666] [2025-02-05 10:09:09,739 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:09:09,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:09,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:09,742 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:09,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-05 10:09:09,788 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 34 statements into 6 equivalence classes. [2025-02-05 10:09:09,820 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 34 of 34 statements. [2025-02-05 10:09:09,820 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-05 10:09:09,820 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:09,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-02-05 10:09:09,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:09,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2025-02-05 10:09:09,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2025-02-05 10:09:09,897 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:09,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2025-02-05 10:09:09,934 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:09,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2025-02-05 10:09:09,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:09,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 63 [2025-02-05 10:09:10,027 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:10,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 76 [2025-02-05 10:09:10,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:10,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 79 [2025-02-05 10:09:10,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:10,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 53 [2025-02-05 10:09:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:10,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 20 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:10,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767618666] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:10,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:10,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 16] total 47 [2025-02-05 10:09:10,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640997057] [2025-02-05 10:09:10,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:10,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-02-05 10:09:10,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:10,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-02-05 10:09:10,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=1811, Unknown=0, NotChecked=0, Total=2162 [2025-02-05 10:09:10,877 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 47 states, 47 states have (on average 2.021276595744681) internal successors, (95), 47 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:13,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:13,151 INFO L93 Difference]: Finished difference Result 126 states and 143 transitions. [2025-02-05 10:09:13,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-02-05 10:09:13,151 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.021276595744681) internal successors, (95), 47 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-02-05 10:09:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:13,151 INFO L225 Difference]: With dead ends: 126 [2025-02-05 10:09:13,151 INFO L226 Difference]: Without dead ends: 90 [2025-02-05 10:09:13,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3896 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1902, Invalid=10088, Unknown=0, NotChecked=0, Total=11990 [2025-02-05 10:09:13,158 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 348 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:13,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 73 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-05 10:09:13,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-02-05 10:09:13,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 44. [2025-02-05 10:09:13,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:13,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2025-02-05 10:09:13,169 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 34 [2025-02-05 10:09:13,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:13,169 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2025-02-05 10:09:13,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.021276595744681) internal successors, (95), 47 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:13,169 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2025-02-05 10:09:13,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-05 10:09:13,170 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:13,170 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:13,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-05 10:09:13,372 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,SelfDestructingSolverStorable8 [2025-02-05 10:09:13,372 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:13,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:13,372 INFO L85 PathProgramCache]: Analyzing trace with hash -651467457, now seen corresponding path program 7 times [2025-02-05 10:09:13,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:13,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386280151] [2025-02-05 10:09:13,372 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:09:13,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:13,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-05 10:09:13,398 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 10:09:13,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:09:13,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:13,978 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 19 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:13,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:13,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386280151] [2025-02-05 10:09:13,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386280151] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:13,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914459376] [2025-02-05 10:09:13,979 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:09:13,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:13,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:13,981 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:13,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-05 10:09:14,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-05 10:09:14,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-05 10:09:14,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:09:14,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:14,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-05 10:09:14,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:14,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2025-02-05 10:09:14,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2025-02-05 10:09:14,081 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:14,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 48 [2025-02-05 10:09:14,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:14,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 65 [2025-02-05 10:09:14,139 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:14,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 68 [2025-02-05 10:09:14,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:14,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 82 [2025-02-05 10:09:14,226 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:14,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 85 [2025-02-05 10:09:14,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:14,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 99 [2025-02-05 10:09:14,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:14,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 100 treesize of output 102 [2025-02-05 10:09:14,433 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:14,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 66 treesize of output 73 [2025-02-05 10:09:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 42 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:14,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 25 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:15,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914459376] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:15,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:15,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 17] total 48 [2025-02-05 10:09:15,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350459375] [2025-02-05 10:09:15,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:15,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-05 10:09:15,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:15,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-05 10:09:15,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1884, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 10:09:15,153 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 48 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:16,798 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2025-02-05 10:09:16,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2025-02-05 10:09:16,798 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2025-02-05 10:09:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:16,801 INFO L225 Difference]: With dead ends: 99 [2025-02-05 10:09:16,801 INFO L226 Difference]: Without dead ends: 97 [2025-02-05 10:09:16,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2844 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1967, Invalid=7933, Unknown=0, NotChecked=0, Total=9900 [2025-02-05 10:09:16,803 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 221 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:16,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 100 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 10:09:16,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-02-05 10:09:16,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 47. [2025-02-05 10:09:16,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:16,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2025-02-05 10:09:16,816 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 40 [2025-02-05 10:09:16,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:16,818 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2025-02-05 10:09:16,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.2916666666666665) internal successors, (110), 48 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:16,818 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2025-02-05 10:09:16,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-05 10:09:16,818 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:16,818 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:16,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-05 10:09:17,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:17,019 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:17,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:17,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1091071948, now seen corresponding path program 8 times [2025-02-05 10:09:17,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:17,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537740841] [2025-02-05 10:09:17,020 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:09:17,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:17,025 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-05 10:09:17,033 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 10:09:17,033 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:09:17,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 41 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:17,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537740841] [2025-02-05 10:09:17,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537740841] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:17,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497987662] [2025-02-05 10:09:17,128 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:09:17,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:17,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:17,130 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:17,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 10:09:17,172 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 43 statements into 2 equivalence classes. [2025-02-05 10:09:17,188 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 43 of 43 statements. [2025-02-05 10:09:17,188 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:09:17,189 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:17,189 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-05 10:09:17,190 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 57 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:17,296 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:17,427 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 68 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:17,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497987662] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:17,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:17,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 16] total 24 [2025-02-05 10:09:17,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921421832] [2025-02-05 10:09:17,427 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:17,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 10:09:17,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:17,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 10:09:17,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=331, Unknown=0, NotChecked=0, Total=552 [2025-02-05 10:09:17,428 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:17,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:17,536 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2025-02-05 10:09:17,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-05 10:09:17,536 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2025-02-05 10:09:17,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:17,537 INFO L225 Difference]: With dead ends: 86 [2025-02-05 10:09:17,537 INFO L226 Difference]: Without dead ends: 48 [2025-02-05 10:09:17,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 71 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=257, Invalid=393, Unknown=0, NotChecked=0, Total=650 [2025-02-05 10:09:17,538 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 5 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:17,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 55 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:09:17,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-02-05 10:09:17,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2025-02-05 10:09:17,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.065217391304348) internal successors, (49), 46 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:17,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2025-02-05 10:09:17,546 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 43 [2025-02-05 10:09:17,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:17,547 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2025-02-05 10:09:17,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.5416666666666665) internal successors, (85), 24 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:17,547 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2025-02-05 10:09:17,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-05 10:09:17,548 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:17,548 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:17,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-05 10:09:17,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:17,748 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:17,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1039873957, now seen corresponding path program 9 times [2025-02-05 10:09:17,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:17,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168380791] [2025-02-05 10:09:17,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:09:17,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:17,756 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 46 statements into 8 equivalence classes. [2025-02-05 10:09:17,786 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 10:09:17,786 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-05 10:09:17,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:18,577 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:18,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168380791] [2025-02-05 10:09:18,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168380791] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:18,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698544935] [2025-02-05 10:09:18,578 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:09:18,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:18,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:18,580 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:18,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 10:09:18,624 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 46 statements into 8 equivalence classes. [2025-02-05 10:09:18,747 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 46 of 46 statements. [2025-02-05 10:09:18,748 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-05 10:09:18,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:18,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 60 conjuncts are in the unsatisfiable core [2025-02-05 10:09:18,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:18,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2025-02-05 10:09:18,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2025-02-05 10:09:18,802 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:18,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2025-02-05 10:09:18,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:18,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2025-02-05 10:09:18,869 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:18,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 63 [2025-02-05 10:09:18,906 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:18,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 76 [2025-02-05 10:09:18,943 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:18,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 79 [2025-02-05 10:09:18,995 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:18,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 92 [2025-02-05 10:09:19,038 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:19,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 95 [2025-02-05 10:09:19,117 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:19,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 108 [2025-02-05 10:09:19,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:19,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 111 [2025-02-05 10:09:19,387 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:19,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 63 treesize of output 73 [2025-02-05 10:09:20,252 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 0 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:20,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:20,889 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 30 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:20,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698544935] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:20,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:20,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 25, 19] total 58 [2025-02-05 10:09:20,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776376091] [2025-02-05 10:09:20,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:20,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-05 10:09:20,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:20,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-05 10:09:20,891 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=818, Invalid=2488, Unknown=0, NotChecked=0, Total=3306 [2025-02-05 10:09:20,892 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 58 states, 58 states have (on average 2.206896551724138) internal successors, (128), 58 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:23,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:23,119 INFO L93 Difference]: Finished difference Result 115 states and 127 transitions. [2025-02-05 10:09:23,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2025-02-05 10:09:23,120 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.206896551724138) internal successors, (128), 58 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2025-02-05 10:09:23,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:23,120 INFO L225 Difference]: With dead ends: 115 [2025-02-05 10:09:23,120 INFO L226 Difference]: Without dead ends: 68 [2025-02-05 10:09:23,122 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3037 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2135, Invalid=6421, Unknown=0, NotChecked=0, Total=8556 [2025-02-05 10:09:23,122 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 141 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:23,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 129 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1096 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-05 10:09:23,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-05 10:09:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 56. [2025-02-05 10:09:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0909090909090908) internal successors, (60), 55 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2025-02-05 10:09:23,144 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 46 [2025-02-05 10:09:23,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:23,144 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2025-02-05 10:09:23,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.206896551724138) internal successors, (128), 58 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:23,144 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2025-02-05 10:09:23,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-05 10:09:23,145 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:23,145 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:23,182 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-05 10:09:23,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:23,346 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:23,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:23,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1349363585, now seen corresponding path program 10 times [2025-02-05 10:09:23,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:23,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558774702] [2025-02-05 10:09:23,346 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:09:23,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:23,353 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-02-05 10:09:23,363 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 49 of 52 statements. [2025-02-05 10:09:23,363 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:09:23,363 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:24,075 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:24,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:24,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558774702] [2025-02-05 10:09:24,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558774702] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:24,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220881759] [2025-02-05 10:09:24,075 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:09:24,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:24,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:24,077 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:24,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 10:09:24,125 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 52 statements into 2 equivalence classes. [2025-02-05 10:09:24,141 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 49 of 52 statements. [2025-02-05 10:09:24,141 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:09:24,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:24,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-02-05 10:09:24,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:24,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2025-02-05 10:09:24,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2025-02-05 10:09:24,194 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 48 [2025-02-05 10:09:24,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 65 [2025-02-05 10:09:24,251 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 68 [2025-02-05 10:09:24,289 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 82 [2025-02-05 10:09:24,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 85 [2025-02-05 10:09:24,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 99 [2025-02-05 10:09:24,406 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 100 treesize of output 102 [2025-02-05 10:09:24,456 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 116 [2025-02-05 10:09:24,512 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 119 [2025-02-05 10:09:24,589 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 116 treesize of output 133 [2025-02-05 10:09:24,650 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 136 [2025-02-05 10:09:24,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:24,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 97 [2025-02-05 10:09:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 79 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:25,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 35 proven. 134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:25,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220881759] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:25,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:25,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 27, 21] total 48 [2025-02-05 10:09:25,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477296302] [2025-02-05 10:09:25,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:25,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-05 10:09:25,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:25,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-05 10:09:25,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1771, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 10:09:25,776 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 48 states, 48 states have (on average 2.5) internal successors, (120), 48 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:27,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:27,374 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2025-02-05 10:09:27,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2025-02-05 10:09:27,374 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.5) internal successors, (120), 48 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2025-02-05 10:09:27,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:27,375 INFO L225 Difference]: With dead ends: 125 [2025-02-05 10:09:27,375 INFO L226 Difference]: Without dead ends: 123 [2025-02-05 10:09:27,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 77 SyntacticMatches, 12 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2965 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1809, Invalid=7311, Unknown=0, NotChecked=0, Total=9120 [2025-02-05 10:09:27,377 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 126 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:27,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 80 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-05 10:09:27,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-02-05 10:09:27,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 59. [2025-02-05 10:09:27,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:27,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2025-02-05 10:09:27,387 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 52 [2025-02-05 10:09:27,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:27,388 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2025-02-05 10:09:27,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 2.5) internal successors, (120), 48 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:27,388 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2025-02-05 10:09:27,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-05 10:09:27,388 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:27,388 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:27,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-05 10:09:27,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-05 10:09:27,589 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:27,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:27,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2004202636, now seen corresponding path program 11 times [2025-02-05 10:09:27,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:27,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738118594] [2025-02-05 10:09:27,589 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:09:27,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:27,596 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 9 equivalence classes. [2025-02-05 10:09:27,612 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 55 of 55 statements. [2025-02-05 10:09:27,613 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-05 10:09:27,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:27,723 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 100 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:27,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:27,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738118594] [2025-02-05 10:09:27,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738118594] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:27,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029737329] [2025-02-05 10:09:27,724 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:09:27,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:27,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:27,727 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:27,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 10:09:27,781 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 55 statements into 9 equivalence classes. [2025-02-05 10:09:27,967 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) and asserted 55 of 55 statements. [2025-02-05 10:09:27,967 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2025-02-05 10:09:27,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:27,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-05 10:09:27,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 100 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:28,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:28,313 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 115 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:28,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029737329] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:28,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:28,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 20] total 29 [2025-02-05 10:09:28,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749591864] [2025-02-05 10:09:28,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:28,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-05 10:09:28,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:28,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-05 10:09:28,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=479, Unknown=0, NotChecked=0, Total=812 [2025-02-05 10:09:28,314 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand has 29 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 29 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:28,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:28,442 INFO L93 Difference]: Finished difference Result 104 states and 112 transitions. [2025-02-05 10:09:28,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-05 10:09:28,442 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 29 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-02-05 10:09:28,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:28,443 INFO L225 Difference]: With dead ends: 104 [2025-02-05 10:09:28,443 INFO L226 Difference]: Without dead ends: 60 [2025-02-05 10:09:28,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 92 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=376, Invalid=554, Unknown=0, NotChecked=0, Total=930 [2025-02-05 10:09:28,443 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:28,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 49 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:09:28,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-05 10:09:28,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2025-02-05 10:09:28,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.0517241379310345) internal successors, (61), 58 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:28,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 61 transitions. [2025-02-05 10:09:28,453 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 61 transitions. Word has length 55 [2025-02-05 10:09:28,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:28,453 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 61 transitions. [2025-02-05 10:09:28,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.6206896551724137) internal successors, (105), 29 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:28,453 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 61 transitions. [2025-02-05 10:09:28,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-05 10:09:28,453 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:28,454 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:28,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-05 10:09:28,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-02-05 10:09:28,654 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:28,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:28,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1545687397, now seen corresponding path program 12 times [2025-02-05 10:09:28,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:28,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071154887] [2025-02-05 10:09:28,655 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:09:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:28,668 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 10 equivalence classes. [2025-02-05 10:09:28,693 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 58 of 58 statements. [2025-02-05 10:09:28,693 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-02-05 10:09:28,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:29,662 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 3 proven. 214 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:29,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:29,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071154887] [2025-02-05 10:09:29,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071154887] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:29,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945011054] [2025-02-05 10:09:29,662 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:09:29,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:29,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:29,664 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:29,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-05 10:09:29,723 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 10 equivalence classes. [2025-02-05 10:09:29,960 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) and asserted 58 of 58 statements. [2025-02-05 10:09:29,960 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2025-02-05 10:09:29,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:29,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-02-05 10:09:29,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:29,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2025-02-05 10:09:30,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2025-02-05 10:09:30,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2025-02-05 10:09:30,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2025-02-05 10:09:30,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 63 [2025-02-05 10:09:30,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 76 [2025-02-05 10:09:30,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 79 [2025-02-05 10:09:30,274 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 92 [2025-02-05 10:09:30,330 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 95 [2025-02-05 10:09:30,390 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 108 [2025-02-05 10:09:30,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 111 [2025-02-05 10:09:30,515 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 107 treesize of output 124 [2025-02-05 10:09:30,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 118 treesize of output 127 [2025-02-05 10:09:30,657 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 120 treesize of output 140 [2025-02-05 10:09:30,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 131 treesize of output 143 [2025-02-05 10:09:30,941 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:30,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 77 treesize of output 93 [2025-02-05 10:09:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 102 proven. 115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:31,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 40 proven. 177 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:32,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945011054] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:32,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:32,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 31, 23] total 73 [2025-02-05 10:09:32,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592070512] [2025-02-05 10:09:32,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:32,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2025-02-05 10:09:32,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:32,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2025-02-05 10:09:32,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=865, Invalid=4391, Unknown=0, NotChecked=0, Total=5256 [2025-02-05 10:09:32,371 INFO L87 Difference]: Start difference. First operand 59 states and 61 transitions. Second operand has 73 states, 73 states have (on average 2.287671232876712) internal successors, (167), 73 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:36,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:36,034 INFO L93 Difference]: Finished difference Result 168 states and 186 transitions. [2025-02-05 10:09:36,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2025-02-05 10:09:36,034 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.287671232876712) internal successors, (167), 73 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-02-05 10:09:36,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:36,035 INFO L225 Difference]: With dead ends: 168 [2025-02-05 10:09:36,035 INFO L226 Difference]: Without dead ends: 166 [2025-02-05 10:09:36,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7309 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3646, Invalid=19004, Unknown=0, NotChecked=0, Total=22650 [2025-02-05 10:09:36,038 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 691 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 1786 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 1786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:36,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 187 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 1786 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-05 10:09:36,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-02-05 10:09:36,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 62. [2025-02-05 10:09:36,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 64 transitions. [2025-02-05 10:09:36,055 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 64 transitions. Word has length 58 [2025-02-05 10:09:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:36,055 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 64 transitions. [2025-02-05 10:09:36,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 2.287671232876712) internal successors, (167), 73 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:36,056 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 64 transitions. [2025-02-05 10:09:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-05 10:09:36,056 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:36,056 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:36,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-05 10:09:36,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:36,256 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:36,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:36,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1227990800, now seen corresponding path program 13 times [2025-02-05 10:09:36,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:36,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498675139] [2025-02-05 10:09:36,257 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:09:36,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:36,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-05 10:09:36,271 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-05 10:09:36,271 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:09:36,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:36,409 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 101 proven. 142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:36,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:36,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498675139] [2025-02-05 10:09:36,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498675139] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:36,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612061982] [2025-02-05 10:09:36,410 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:09:36,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:36,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:36,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:36,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-05 10:09:36,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-05 10:09:36,491 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-05 10:09:36,491 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:09:36,491 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:36,492 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-05 10:09:36,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:36,652 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 126 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:36,652 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 143 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:36,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612061982] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:36,828 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:36,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 22, 22] total 33 [2025-02-05 10:09:36,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354971958] [2025-02-05 10:09:36,828 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:36,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-05 10:09:36,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:36,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-05 10:09:36,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=637, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 10:09:36,829 INFO L87 Difference]: Start difference. First operand 62 states and 64 transitions. Second operand has 33 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 33 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:36,934 INFO L93 Difference]: Finished difference Result 105 states and 110 transitions. [2025-02-05 10:09:36,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-05 10:09:36,935 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 33 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-02-05 10:09:36,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:36,937 INFO L225 Difference]: With dead ends: 105 [2025-02-05 10:09:36,937 INFO L226 Difference]: Without dead ends: 66 [2025-02-05 10:09:36,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 101 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=443, Invalid=679, Unknown=0, NotChecked=0, Total=1122 [2025-02-05 10:09:36,938 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:36,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 72 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:09:36,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-02-05 10:09:36,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2025-02-05 10:09:36,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.046875) internal successors, (67), 64 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2025-02-05 10:09:36,949 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 61 [2025-02-05 10:09:36,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:36,950 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2025-02-05 10:09:36,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.6666666666666665) internal successors, (121), 33 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2025-02-05 10:09:36,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-05 10:09:36,950 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:36,950 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:36,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-05 10:09:37,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:37,151 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:37,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:37,151 INFO L85 PathProgramCache]: Analyzing trace with hash -460239937, now seen corresponding path program 14 times [2025-02-05 10:09:37,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:37,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151063182] [2025-02-05 10:09:37,151 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:09:37,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:37,158 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 64 statements into 2 equivalence classes. [2025-02-05 10:09:37,169 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-02-05 10:09:37,169 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:09:37,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 84 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:38,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151063182] [2025-02-05 10:09:38,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151063182] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358128077] [2025-02-05 10:09:38,099 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:09:38,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:38,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:38,101 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:38,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-05 10:09:38,165 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 64 statements into 2 equivalence classes. [2025-02-05 10:09:38,193 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 64 of 64 statements. [2025-02-05 10:09:38,193 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:09:38,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:38,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 80 conjuncts are in the unsatisfiable core [2025-02-05 10:09:38,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:38,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2025-02-05 10:09:38,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2025-02-05 10:09:38,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 48 [2025-02-05 10:09:38,257 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 65 [2025-02-05 10:09:38,283 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 68 [2025-02-05 10:09:38,320 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 82 [2025-02-05 10:09:38,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 85 [2025-02-05 10:09:38,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 99 [2025-02-05 10:09:38,438 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 100 treesize of output 102 [2025-02-05 10:09:38,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 116 [2025-02-05 10:09:38,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 119 [2025-02-05 10:09:38,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 116 treesize of output 133 [2025-02-05 10:09:38,658 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 136 [2025-02-05 10:09:38,748 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 150 [2025-02-05 10:09:38,816 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 142 treesize of output 153 [2025-02-05 10:09:38,894 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 144 treesize of output 167 [2025-02-05 10:09:38,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:38,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 156 treesize of output 170 [2025-02-05 10:09:39,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:39,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 102 treesize of output 121 [2025-02-05 10:09:40,250 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 128 proven. 143 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:40,251 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 45 proven. 226 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:40,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358128077] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:40,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:40,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 33, 25] total 71 [2025-02-05 10:09:40,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806813623] [2025-02-05 10:09:40,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:40,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2025-02-05 10:09:40,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:40,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2025-02-05 10:09:40,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=776, Invalid=4194, Unknown=0, NotChecked=0, Total=4970 [2025-02-05 10:09:40,864 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 71 states, 71 states have (on average 2.563380281690141) internal successors, (182), 71 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:45,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:45,874 INFO L93 Difference]: Finished difference Result 221 states and 243 transitions. [2025-02-05 10:09:45,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2025-02-05 10:09:45,875 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.563380281690141) internal successors, (182), 71 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2025-02-05 10:09:45,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:45,875 INFO L225 Difference]: With dead ends: 221 [2025-02-05 10:09:45,876 INFO L226 Difference]: Without dead ends: 155 [2025-02-05 10:09:45,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 109 SyntacticMatches, 1 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11324 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4584, Invalid=29088, Unknown=0, NotChecked=0, Total=33672 [2025-02-05 10:09:45,878 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 654 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:45,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 139 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-05 10:09:45,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-02-05 10:09:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 74. [2025-02-05 10:09:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0684931506849316) internal successors, (78), 73 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2025-02-05 10:09:45,894 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 64 [2025-02-05 10:09:45,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:45,894 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2025-02-05 10:09:45,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.563380281690141) internal successors, (182), 71 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2025-02-05 10:09:45,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-05 10:09:45,894 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:45,894 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:45,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-05 10:09:46,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-05 10:09:46,095 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:46,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:46,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1723487451, now seen corresponding path program 15 times [2025-02-05 10:09:46,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:46,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610503747] [2025-02-05 10:09:46,095 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:09:46,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:46,103 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 70 statements into 12 equivalence classes. [2025-02-05 10:09:46,155 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 70 of 70 statements. [2025-02-05 10:09:46,155 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-02-05 10:09:46,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:47,788 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 108 proven. 223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:47,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:47,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610503747] [2025-02-05 10:09:47,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610503747] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:47,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990202584] [2025-02-05 10:09:47,789 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:09:47,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:47,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:47,790 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:47,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-05 10:09:47,864 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 70 statements into 12 equivalence classes. [2025-02-05 10:09:48,274 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 70 of 70 statements. [2025-02-05 10:09:48,274 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-02-05 10:09:48,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:48,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 90 conjuncts are in the unsatisfiable core [2025-02-05 10:09:48,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:48,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2025-02-05 10:09:48,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2025-02-05 10:09:48,340 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2025-02-05 10:09:48,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2025-02-05 10:09:48,412 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 63 [2025-02-05 10:09:48,457 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 76 [2025-02-05 10:09:48,501 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 79 [2025-02-05 10:09:48,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 92 [2025-02-05 10:09:48,613 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 95 [2025-02-05 10:09:48,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 108 [2025-02-05 10:09:48,728 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 111 [2025-02-05 10:09:48,793 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 107 treesize of output 124 [2025-02-05 10:09:48,857 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 118 treesize of output 127 [2025-02-05 10:09:48,936 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:48,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 120 treesize of output 140 [2025-02-05 10:09:49,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:49,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 131 treesize of output 143 [2025-02-05 10:09:49,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:49,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 133 treesize of output 156 [2025-02-05 10:09:49,189 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:49,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 144 treesize of output 159 [2025-02-05 10:09:49,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:49,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 146 treesize of output 172 [2025-02-05 10:09:49,397 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:49,398 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 157 treesize of output 175 [2025-02-05 10:09:49,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:49,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 91 treesize of output 113 [2025-02-05 10:09:50,804 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 157 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:50,804 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:09:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 50 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:51,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990202584] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:09:51,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:09:51,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 37, 27] total 88 [2025-02-05 10:09:51,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141546335] [2025-02-05 10:09:51,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:09:51,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2025-02-05 10:09:51,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:09:51,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2025-02-05 10:09:51,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1183, Invalid=6473, Unknown=0, NotChecked=0, Total=7656 [2025-02-05 10:09:51,513 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 88 states, 88 states have (on average 2.3068181818181817) internal successors, (203), 88 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:57,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:09:57,862 INFO L93 Difference]: Finished difference Result 247 states and 274 transitions. [2025-02-05 10:09:57,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2025-02-05 10:09:57,863 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.3068181818181817) internal successors, (203), 88 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-02-05 10:09:57,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:09:57,863 INFO L225 Difference]: With dead ends: 247 [2025-02-05 10:09:57,863 INFO L226 Difference]: Without dead ends: 175 [2025-02-05 10:09:57,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 110 SyntacticMatches, 1 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16337 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=6203, Invalid=38529, Unknown=0, NotChecked=0, Total=44732 [2025-02-05 10:09:57,866 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 667 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-05 10:09:57,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 148 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 1977 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-05 10:09:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-02-05 10:09:57,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 77. [2025-02-05 10:09:57,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 76 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:57,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2025-02-05 10:09:57,884 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 70 [2025-02-05 10:09:57,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:09:57,884 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2025-02-05 10:09:57,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 2.3068181818181817) internal successors, (203), 88 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:09:57,884 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2025-02-05 10:09:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-05 10:09:57,884 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:09:57,884 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:09:57,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-05 10:09:58,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-05 10:09:58,085 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:09:58,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:09:58,085 INFO L85 PathProgramCache]: Analyzing trace with hash -528466177, now seen corresponding path program 16 times [2025-02-05 10:09:58,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:09:58,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964853387] [2025-02-05 10:09:58,085 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:09:58,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:09:58,093 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 76 statements into 2 equivalence classes. [2025-02-05 10:09:58,102 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 73 of 76 statements. [2025-02-05 10:09:58,102 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:09:58,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 34 proven. 363 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:09:59,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:09:59,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964853387] [2025-02-05 10:09:59,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964853387] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:09:59,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447935419] [2025-02-05 10:09:59,098 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 10:09:59,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:09:59,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:09:59,100 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:09:59,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-05 10:09:59,175 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 76 statements into 2 equivalence classes. [2025-02-05 10:09:59,211 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 73 of 76 statements. [2025-02-05 10:09:59,211 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 10:09:59,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:09:59,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-05 10:09:59,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:09:59,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2025-02-05 10:09:59,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2025-02-05 10:09:59,255 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 48 [2025-02-05 10:09:59,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 65 [2025-02-05 10:09:59,316 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 68 [2025-02-05 10:09:59,355 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 82 [2025-02-05 10:09:59,407 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 85 [2025-02-05 10:09:59,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 99 [2025-02-05 10:09:59,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 100 treesize of output 102 [2025-02-05 10:09:59,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 116 [2025-02-05 10:09:59,623 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 119 [2025-02-05 10:09:59,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 116 treesize of output 133 [2025-02-05 10:09:59,767 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 136 [2025-02-05 10:09:59,840 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 150 [2025-02-05 10:09:59,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 142 treesize of output 153 [2025-02-05 10:09:59,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:09:59,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 144 treesize of output 167 [2025-02-05 10:10:00,079 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:00,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 156 treesize of output 170 [2025-02-05 10:10:00,179 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:00,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 158 treesize of output 184 [2025-02-05 10:10:00,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:00,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 170 treesize of output 187 [2025-02-05 10:10:00,380 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:00,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 172 treesize of output 201 [2025-02-05 10:10:00,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:00,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 184 treesize of output 204 [2025-02-05 10:10:00,803 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:00,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 120 treesize of output 145 [2025-02-05 10:10:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 189 proven. 208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:02,354 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:10:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 55 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:02,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1447935419] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:10:02,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:10:02,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 39, 29] total 68 [2025-02-05 10:10:02,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503196257] [2025-02-05 10:10:02,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:10:02,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2025-02-05 10:10:02,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:10:02,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2025-02-05 10:10:02,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=953, Invalid=3603, Unknown=0, NotChecked=0, Total=4556 [2025-02-05 10:10:02,920 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand has 68 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 68 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:06,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:10:06,923 INFO L93 Difference]: Finished difference Result 181 states and 202 transitions. [2025-02-05 10:10:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2025-02-05 10:10:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 68 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2025-02-05 10:10:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:10:06,924 INFO L225 Difference]: With dead ends: 181 [2025-02-05 10:10:06,924 INFO L226 Difference]: Without dead ends: 179 [2025-02-05 10:10:06,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 117 SyntacticMatches, 16 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6872 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=3956, Invalid=16636, Unknown=0, NotChecked=0, Total=20592 [2025-02-05 10:10:06,926 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 417 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 1829 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-05 10:10:06,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 154 Invalid, 2012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1829 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-05 10:10:06,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2025-02-05 10:10:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 80. [2025-02-05 10:10:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:06,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2025-02-05 10:10:06,944 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 76 [2025-02-05 10:10:06,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:10:06,944 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2025-02-05 10:10:06,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.6470588235294117) internal successors, (180), 68 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:06,944 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2025-02-05 10:10:06,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-05 10:10:06,945 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:10:06,945 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:10:06,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-05 10:10:07,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:10:07,145 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:10:07,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:10:07,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1815100940, now seen corresponding path program 17 times [2025-02-05 10:10:07,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:10:07,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457289404] [2025-02-05 10:10:07,146 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:10:07,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:10:07,155 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 79 statements into 13 equivalence classes. [2025-02-05 10:10:07,178 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 10:10:07,178 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-05 10:10:07,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:10:07,369 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 222 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:07,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:10:07,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457289404] [2025-02-05 10:10:07,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457289404] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:10:07,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740047952] [2025-02-05 10:10:07,369 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 10:10:07,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:10:07,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:10:07,371 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:10:07,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-05 10:10:07,454 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 79 statements into 13 equivalence classes. [2025-02-05 10:10:07,786 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 79 of 79 statements. [2025-02-05 10:10:07,786 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-05 10:10:07,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:10:07,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-05 10:10:07,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:10:07,975 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 222 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:07,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:10:08,227 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 245 proven. 187 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:08,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740047952] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:10:08,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:10:08,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 28, 28] total 41 [2025-02-05 10:10:08,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752204341] [2025-02-05 10:10:08,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:10:08,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-05 10:10:08,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:10:08,228 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-05 10:10:08,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=663, Invalid=977, Unknown=0, NotChecked=0, Total=1640 [2025-02-05 10:10:08,228 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 41 states, 41 states have (on average 3.731707317073171) internal successors, (153), 41 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:08,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:10:08,391 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2025-02-05 10:10:08,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-05 10:10:08,392 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.731707317073171) internal successors, (153), 41 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2025-02-05 10:10:08,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:10:08,392 INFO L225 Difference]: With dead ends: 144 [2025-02-05 10:10:08,392 INFO L226 Difference]: Without dead ends: 84 [2025-02-05 10:10:08,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 132 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=785, Invalid=1195, Unknown=0, NotChecked=0, Total=1980 [2025-02-05 10:10:08,393 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:10:08,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 59 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:10:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-02-05 10:10:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2025-02-05 10:10:08,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.0365853658536586) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:08,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2025-02-05 10:10:08,426 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 79 [2025-02-05 10:10:08,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:10:08,426 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2025-02-05 10:10:08,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.731707317073171) internal successors, (153), 41 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:08,426 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2025-02-05 10:10:08,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2025-02-05 10:10:08,427 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:10:08,427 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:10:08,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-05 10:10:08,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:10:08,627 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:10:08,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:10:08,627 INFO L85 PathProgramCache]: Analyzing trace with hash -895501541, now seen corresponding path program 18 times [2025-02-05 10:10:08,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:10:08,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127607479] [2025-02-05 10:10:08,628 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:10:08,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:10:08,636 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 82 statements into 14 equivalence classes. [2025-02-05 10:10:08,668 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 82 of 82 statements. [2025-02-05 10:10:08,668 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-02-05 10:10:08,668 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:10:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 23 proven. 446 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:10,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:10:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127607479] [2025-02-05 10:10:10,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127607479] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:10:10,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108494339] [2025-02-05 10:10:10,308 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 10:10:10,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:10:10,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:10:10,310 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:10:10,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-05 10:10:10,388 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 82 statements into 14 equivalence classes. [2025-02-05 10:10:11,825 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) and asserted 82 of 82 statements. [2025-02-05 10:10:11,826 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2025-02-05 10:10:11,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:10:11,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 120 conjuncts are in the unsatisfiable core [2025-02-05 10:10:11,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:10:11,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2025-02-05 10:10:11,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2025-02-05 10:10:11,896 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:11,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2025-02-05 10:10:11,931 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:11,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 60 [2025-02-05 10:10:11,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:11,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 66 treesize of output 63 [2025-02-05 10:10:12,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 68 treesize of output 76 [2025-02-05 10:10:12,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 79 treesize of output 79 [2025-02-05 10:10:12,100 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 92 [2025-02-05 10:10:12,148 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 92 treesize of output 95 [2025-02-05 10:10:12,217 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 108 [2025-02-05 10:10:12,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 21 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 105 treesize of output 111 [2025-02-05 10:10:12,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 107 treesize of output 124 [2025-02-05 10:10:12,430 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 118 treesize of output 127 [2025-02-05 10:10:12,512 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 36 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 120 treesize of output 140 [2025-02-05 10:10:12,587 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 131 treesize of output 143 [2025-02-05 10:10:12,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 45 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 133 treesize of output 156 [2025-02-05 10:10:12,782 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 45 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 144 treesize of output 159 [2025-02-05 10:10:12,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:12,912 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 55 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 146 treesize of output 172 [2025-02-05 10:10:13,019 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:13,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 55 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 157 treesize of output 175 [2025-02-05 10:10:13,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:13,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 66 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 159 treesize of output 188 [2025-02-05 10:10:13,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:13,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 66 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 170 treesize of output 191 [2025-02-05 10:10:13,391 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:13,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 78 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 172 treesize of output 204 [2025-02-05 10:10:13,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:13,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 183 treesize of output 207 [2025-02-05 10:10:13,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:13,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 105 treesize of output 133 [2025-02-05 10:10:16,105 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:16,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:10:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 37 proven. 432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108494339] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:10:17,102 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:10:17,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 44, 31] total 102 [2025-02-05 10:10:17,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709806567] [2025-02-05 10:10:17,103 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:10:17,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2025-02-05 10:10:17,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:10:17,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2025-02-05 10:10:17,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2557, Invalid=7745, Unknown=0, NotChecked=0, Total=10302 [2025-02-05 10:10:17,105 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 102 states, 102 states have (on average 2.343137254901961) internal successors, (239), 102 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:19,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:10:19,962 INFO L93 Difference]: Finished difference Result 181 states and 191 transitions. [2025-02-05 10:10:19,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2025-02-05 10:10:19,962 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.343137254901961) internal successors, (239), 102 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2025-02-05 10:10:19,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:10:19,963 INFO L225 Difference]: With dead ends: 181 [2025-02-05 10:10:19,963 INFO L226 Difference]: Without dead ends: 92 [2025-02-05 10:10:19,963 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6189 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3682, Invalid=11324, Unknown=0, NotChecked=0, Total=15006 [2025-02-05 10:10:19,964 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 67 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 3216 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2025-02-05 10:10:19,964 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 192 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3216 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2025-02-05 10:10:19,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2025-02-05 10:10:19,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2025-02-05 10:10:19,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.0340909090909092) internal successors, (91), 88 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:19,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2025-02-05 10:10:19,988 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 82 [2025-02-05 10:10:19,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:10:19,988 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2025-02-05 10:10:19,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.343137254901961) internal successors, (239), 102 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:19,988 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2025-02-05 10:10:19,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2025-02-05 10:10:19,988 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:10:19,988 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:10:19,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-05 10:10:20,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:10:20,189 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:10:20,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:10:20,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1514720705, now seen corresponding path program 19 times [2025-02-05 10:10:20,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:10:20,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650088560] [2025-02-05 10:10:20,189 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:10:20,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:10:20,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-05 10:10:20,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-05 10:10:20,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:10:20,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:10:21,601 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 40 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:21,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:10:21,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650088560] [2025-02-05 10:10:21,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650088560] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:10:21,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711119501] [2025-02-05 10:10:21,601 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 10:10:21,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:10:21,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:10:21,603 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:10:21,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-05 10:10:21,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 88 statements into 1 equivalence classes. [2025-02-05 10:10:21,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 88 of 88 statements. [2025-02-05 10:10:21,739 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 10:10:21,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:10:21,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 112 conjuncts are in the unsatisfiable core [2025-02-05 10:10:21,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:10:21,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2025-02-05 10:10:21,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2025-02-05 10:10:21,792 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:21,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 48 [2025-02-05 10:10:21,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:21,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 65 [2025-02-05 10:10:21,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:21,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 68 [2025-02-05 10:10:21,910 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:21,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 82 [2025-02-05 10:10:21,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:21,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 86 treesize of output 85 [2025-02-05 10:10:22,013 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 88 treesize of output 99 [2025-02-05 10:10:22,070 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 100 treesize of output 102 [2025-02-05 10:10:22,141 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 116 [2025-02-05 10:10:22,223 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 119 [2025-02-05 10:10:22,310 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 116 treesize of output 133 [2025-02-05 10:10:22,382 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 136 [2025-02-05 10:10:22,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 150 [2025-02-05 10:10:22,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 142 treesize of output 153 [2025-02-05 10:10:22,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 144 treesize of output 167 [2025-02-05 10:10:22,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 156 treesize of output 170 [2025-02-05 10:10:22,812 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 158 treesize of output 184 [2025-02-05 10:10:22,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:22,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 170 treesize of output 187 [2025-02-05 10:10:23,020 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:23,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 172 treesize of output 201 [2025-02-05 10:10:23,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:23,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 184 treesize of output 204 [2025-02-05 10:10:23,252 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:23,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 186 treesize of output 218 [2025-02-05 10:10:23,381 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:23,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 198 treesize of output 221 [2025-02-05 10:10:23,530 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:23,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 200 treesize of output 235 [2025-02-05 10:10:23,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:23,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 212 treesize of output 238 [2025-02-05 10:10:24,030 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-05 10:10:24,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 91 case distinctions, treesize of input 138 treesize of output 169 [2025-02-05 10:10:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 262 proven. 285 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:26,239 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:10:26,806 INFO L134 CoverageAnalysis]: Checked inductivity of 547 backedges. 65 proven. 482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:26,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711119501] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:10:26,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:10:26,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 45, 33] total 78 [2025-02-05 10:10:26,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694717088] [2025-02-05 10:10:26,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:10:26,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2025-02-05 10:10:26,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:10:26,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2025-02-05 10:10:26,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1250, Invalid=4756, Unknown=0, NotChecked=0, Total=6006 [2025-02-05 10:10:26,808 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 78 states, 78 states have (on average 2.7435897435897436) internal successors, (214), 78 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:32,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:10:32,437 INFO L93 Difference]: Finished difference Result 193 states and 210 transitions. [2025-02-05 10:10:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2025-02-05 10:10:32,438 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.7435897435897436) internal successors, (214), 78 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2025-02-05 10:10:32,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:10:32,438 INFO L225 Difference]: With dead ends: 193 [2025-02-05 10:10:32,438 INFO L226 Difference]: Without dead ends: 191 [2025-02-05 10:10:32,440 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 126 SyntacticMatches, 17 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10021 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=5771, Invalid=23641, Unknown=0, NotChecked=0, Total=29412 [2025-02-05 10:10:32,440 INFO L435 NwaCegarLoop]: 5 mSDtfsCounter, 479 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 2202 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 2202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2025-02-05 10:10:32,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 180 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 2202 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2025-02-05 10:10:32,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2025-02-05 10:10:32,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 92. [2025-02-05 10:10:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.032967032967033) internal successors, (94), 91 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:32,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2025-02-05 10:10:32,465 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 88 [2025-02-05 10:10:32,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:10:32,465 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2025-02-05 10:10:32,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 2.7435897435897436) internal successors, (214), 78 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:32,466 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2025-02-05 10:10:32,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2025-02-05 10:10:32,466 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:10:32,466 INFO L218 NwaCegarLoop]: trace histogram [15, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:10:32,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-05 10:10:32,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:10:32,667 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:10:32,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:10:32,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2117238068, now seen corresponding path program 20 times [2025-02-05 10:10:32,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:10:32,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726157839] [2025-02-05 10:10:32,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:10:32,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:10:32,677 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-02-05 10:10:32,682 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-02-05 10:10:32,682 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:10:32,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:10:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 261 proven. 327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:32,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 10:10:32,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726157839] [2025-02-05 10:10:32,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726157839] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 10:10:32,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314246595] [2025-02-05 10:10:32,896 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 10:10:32,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:10:32,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 10:10:32,898 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 10:10:32,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-05 10:10:32,998 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 91 statements into 2 equivalence classes. [2025-02-05 10:10:33,037 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 91 of 91 statements. [2025-02-05 10:10:33,037 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 10:10:33,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 10:10:33,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-05 10:10:33,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 10:10:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 301 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:33,284 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 10:10:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 328 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 10:10:33,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314246595] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 10:10:33,593 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 10:10:33,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 32, 32] total 48 [2025-02-05 10:10:33,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477010286] [2025-02-05 10:10:33,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 10:10:33,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-05 10:10:33,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 10:10:33,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-05 10:10:33,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=889, Invalid=1367, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 10:10:33,595 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand has 48 states, 48 states have (on average 3.7708333333333335) internal successors, (181), 48 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:33,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 10:10:33,751 INFO L93 Difference]: Finished difference Result 150 states and 155 transitions. [2025-02-05 10:10:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-05 10:10:33,751 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.7708333333333335) internal successors, (181), 48 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2025-02-05 10:10:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 10:10:33,752 INFO L225 Difference]: With dead ends: 150 [2025-02-05 10:10:33,752 INFO L226 Difference]: Without dead ends: 96 [2025-02-05 10:10:33,752 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 151 SyntacticMatches, 15 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1441 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=923, Invalid=1429, Unknown=0, NotChecked=0, Total=2352 [2025-02-05 10:10:33,753 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 10:10:33,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 84 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 10:10:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-02-05 10:10:33,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2025-02-05 10:10:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.0319148936170213) internal successors, (97), 94 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:33,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 97 transitions. [2025-02-05 10:10:33,779 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 97 transitions. Word has length 91 [2025-02-05 10:10:33,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 10:10:33,780 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 97 transitions. [2025-02-05 10:10:33,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.7708333333333335) internal successors, (181), 48 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 10:10:33,780 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 97 transitions. [2025-02-05 10:10:33,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2025-02-05 10:10:33,780 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 10:10:33,780 INFO L218 NwaCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 10:10:33,786 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-05 10:10:33,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 10:10:33,980 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 10:10:33,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 10:10:33,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1516838565, now seen corresponding path program 21 times [2025-02-05 10:10:33,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 10:10:33,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039711257] [2025-02-05 10:10:33,981 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 10:10:33,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 10:10:33,991 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 94 statements into 16 equivalence classes. [2025-02-05 10:10:34,041 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) and asserted 94 of 94 statements. [2025-02-05 10:10:34,042 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2025-02-05 10:10:34,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat