./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05d1274571884b61e0bf3945fec02c622819cbfceb65bf4937493085e5ba6604 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:24:23,649 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:24:23,728 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-09 22:24:23,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:24:23,735 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:24:23,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:24:23,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:24:23,763 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:24:23,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:24:23,764 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:24:23,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:24:23,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:24:23,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:24:23,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:24:23,765 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:24:23,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:24:23,766 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:24:23,767 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:24:23,767 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:24:23,767 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:24:23,767 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:24:23,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:24:23,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:24:23,768 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:24:23,768 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:24:23,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:24:23,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:24:23,768 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:24:23,768 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:24:23,769 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 22:24:23,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 22:24:23,769 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:24:23,769 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:24:23,769 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:24:23,769 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:24:23,769 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 05d1274571884b61e0bf3945fec02c622819cbfceb65bf4937493085e5ba6604 [2025-01-09 22:24:24,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:24:24,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:24:24,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:24:24,062 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:24:24,063 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:24:24,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2025-01-09 22:24:25,414 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/838d6eb3d/bb2c0ca735694b1abd14fefc51c19b7d/FLAGf89e736db [2025-01-09 22:24:25,711 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:24:25,712 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2025-01-09 22:24:25,719 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/838d6eb3d/bb2c0ca735694b1abd14fefc51c19b7d/FLAGf89e736db [2025-01-09 22:24:25,987 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/838d6eb3d/bb2c0ca735694b1abd14fefc51c19b7d [2025-01-09 22:24:25,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:24:25,991 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:24:25,992 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:24:25,992 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:24:25,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:24:25,997 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:24:25" (1/1) ... [2025-01-09 22:24:25,997 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a901b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:25, skipping insertion in model container [2025-01-09 22:24:25,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:24:25" (1/1) ... [2025-01-09 22:24:26,011 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:24:26,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:24:26,151 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 22:24:26,163 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:24:26,179 INFO L204 MainTranslator]: Completed translation [2025-01-09 22:24:26,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26 WrapperNode [2025-01-09 22:24:26,181 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:24:26,182 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 22:24:26,182 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 22:24:26,182 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 22:24:26,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,210 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2025-01-09 22:24:26,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 22:24:26,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 22:24:26,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 22:24:26,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 22:24:26,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,219 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,230 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 1 writes are split as follows [1, 0]. [2025-01-09 22:24:26,230 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,230 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,235 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,235 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,238 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,239 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,240 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,241 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 22:24:26,242 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 22:24:26,242 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 22:24:26,242 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 22:24:26,243 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (1/1) ... [2025-01-09 22:24:26,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:24:26,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:26,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 22:24:26,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 22:24:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 22:24:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 22:24:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 22:24:26,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 22:24:26,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 22:24:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 22:24:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 22:24:26,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 22:24:26,360 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 22:24:26,361 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 22:24:26,489 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-01-09 22:24:26,489 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 22:24:26,496 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 22:24:26,496 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 22:24:26,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:24:26 BoogieIcfgContainer [2025-01-09 22:24:26,497 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 22:24:26,499 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 22:24:26,499 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 22:24:26,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 22:24:26,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:24:25" (1/3) ... [2025-01-09 22:24:26,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7ca832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:24:26, skipping insertion in model container [2025-01-09 22:24:26,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:26" (2/3) ... [2025-01-09 22:24:26,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7ca832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:24:26, skipping insertion in model container [2025-01-09 22:24:26,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:24:26" (3/3) ... [2025-01-09 22:24:26,506 INFO L128 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_-write.c [2025-01-09 22:24:26,522 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 22:24:26,525 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ArraysWithLenghtAtDeclaration_-write.c that has 1 procedures, 25 locations, 1 initial locations, 3 loop locations, and 8 error locations. [2025-01-09 22:24:26,569 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 22:24:26,582 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=None, 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;@7b2d66c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 22:24:26,582 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-01-09 22:24:26,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.75) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:26,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-09 22:24:26,590 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:26,591 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-09 22:24:26,591 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:26,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:26,597 INFO L85 PathProgramCache]: Analyzing trace with hash 28694820, now seen corresponding path program 1 times [2025-01-09 22:24:26,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:26,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351795550] [2025-01-09 22:24:26,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:26,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:26,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-09 22:24:26,690 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-09 22:24:26,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:26,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:26,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:26,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351795550] [2025-01-09 22:24:26,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351795550] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:26,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:26,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 22:24:26,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472624747] [2025-01-09 22:24:26,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:26,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 22:24:26,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:26,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 22:24:26,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:24:26,847 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.75) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:26,895 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2025-01-09 22:24:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:24:26,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2025-01-09 22:24:26,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:26,903 INFO L225 Difference]: With dead ends: 30 [2025-01-09 22:24:26,905 INFO L226 Difference]: Without dead ends: 28 [2025-01-09 22:24:26,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:24:26,912 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:26,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:26,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-09 22:24:26,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2025-01-09 22:24:26,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:26,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2025-01-09 22:24:26,939 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 5 [2025-01-09 22:24:26,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:26,939 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2025-01-09 22:24:26,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:26,939 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2025-01-09 22:24:26,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-09 22:24:26,940 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:26,940 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-09 22:24:26,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 22:24:26,941 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:26,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:26,941 INFO L85 PathProgramCache]: Analyzing trace with hash 28715065, now seen corresponding path program 1 times [2025-01-09 22:24:26,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:26,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888902931] [2025-01-09 22:24:26,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:26,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:26,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-09 22:24:26,958 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-09 22:24:26,958 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:26,958 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:27,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:27,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:27,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888902931] [2025-01-09 22:24:27,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888902931] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:27,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:27,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:24:27,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137545845] [2025-01-09 22:24:27,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:27,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 22:24:27,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:27,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 22:24:27,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:24:27,027 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:27,067 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2025-01-09 22:24:27,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:24:27,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2025-01-09 22:24:27,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:27,068 INFO L225 Difference]: With dead ends: 43 [2025-01-09 22:24:27,068 INFO L226 Difference]: Without dead ends: 43 [2025-01-09 22:24:27,068 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 [2025-01-09 22:24:27,069 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:27,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:27,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-01-09 22:24:27,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2025-01-09 22:24:27,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.631578947368421) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-01-09 22:24:27,073 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 5 [2025-01-09 22:24:27,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:27,073 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-01-09 22:24:27,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,074 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-01-09 22:24:27,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 22:24:27,074 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:27,074 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 22:24:27,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 22:24:27,075 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:27,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:27,075 INFO L85 PathProgramCache]: Analyzing trace with hash 889547409, now seen corresponding path program 1 times [2025-01-09 22:24:27,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:27,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280900380] [2025-01-09 22:24:27,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:27,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:27,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 22:24:27,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 22:24:27,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:27,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:27,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:27,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280900380] [2025-01-09 22:24:27,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280900380] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:27,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:27,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 22:24:27,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087386118] [2025-01-09 22:24:27,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:27,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:27,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:27,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:27,203 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:27,203 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:27,294 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2025-01-09 22:24:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:24:27,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-01-09 22:24:27,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:27,296 INFO L225 Difference]: With dead ends: 46 [2025-01-09 22:24:27,296 INFO L226 Difference]: Without dead ends: 46 [2025-01-09 22:24:27,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:24:27,297 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:27,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 35 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:27,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-01-09 22:24:27,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2025-01-09 22:24:27,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.6) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2025-01-09 22:24:27,303 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2025-01-09 22:24:27,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:27,304 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2025-01-09 22:24:27,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2025-01-09 22:24:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 22:24:27,304 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:27,304 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 22:24:27,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 22:24:27,304 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:27,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:27,305 INFO L85 PathProgramCache]: Analyzing trace with hash 889539465, now seen corresponding path program 1 times [2025-01-09 22:24:27,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:27,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982432854] [2025-01-09 22:24:27,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:27,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:27,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 22:24:27,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 22:24:27,315 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:27,315 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:27,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:27,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:27,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982432854] [2025-01-09 22:24:27,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982432854] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:27,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:27,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:24:27,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246002197] [2025-01-09 22:24:27,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:27,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:27,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:27,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:27,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:27,381 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:27,418 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2025-01-09 22:24:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:24:27,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-01-09 22:24:27,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:27,422 INFO L225 Difference]: With dead ends: 27 [2025-01-09 22:24:27,422 INFO L226 Difference]: Without dead ends: 27 [2025-01-09 22:24:27,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:24:27,423 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:27,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 23 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:27,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-09 22:24:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-01-09 22:24:27,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.55) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-01-09 22:24:27,429 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 6 [2025-01-09 22:24:27,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:27,429 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-01-09 22:24:27,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,429 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-01-09 22:24:27,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 22:24:27,430 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:27,430 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 22:24:27,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 22:24:27,430 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:27,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:27,432 INFO L85 PathProgramCache]: Analyzing trace with hash 889539466, now seen corresponding path program 1 times [2025-01-09 22:24:27,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:27,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855815053] [2025-01-09 22:24:27,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:27,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:27,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 22:24:27,459 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 22:24:27,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:27,462 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:27,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:27,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855815053] [2025-01-09 22:24:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855815053] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:27,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:27,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:24:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158343475] [2025-01-09 22:24:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:27,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:27,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:27,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:27,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:27,594 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:27,657 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2025-01-09 22:24:27,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:24:27,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-01-09 22:24:27,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:27,658 INFO L225 Difference]: With dead ends: 29 [2025-01-09 22:24:27,658 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 22:24:27,658 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-01-09 22:24:27,660 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:27,660 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 24 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:27,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 22:24:27,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2025-01-09 22:24:27,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2025-01-09 22:24:27,663 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2025-01-09 22:24:27,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:27,663 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2025-01-09 22:24:27,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,663 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2025-01-09 22:24:27,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-09 22:24:27,663 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:27,663 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:27,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 22:24:27,665 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:27,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:27,666 INFO L85 PathProgramCache]: Analyzing trace with hash 321971401, now seen corresponding path program 1 times [2025-01-09 22:24:27,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:27,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210549875] [2025-01-09 22:24:27,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:27,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:27,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 22:24:27,679 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 22:24:27,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:27,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:27,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:27,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210549875] [2025-01-09 22:24:27,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210549875] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:27,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1341225011] [2025-01-09 22:24:27,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:27,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:27,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:27,738 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:27,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 22:24:27,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 22:24:27,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 22:24:27,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:27,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:27,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 22:24:27,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:27,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:27,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1341225011] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:27,864 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:27,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-01-09 22:24:27,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686976546] [2025-01-09 22:24:27,864 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:27,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:24:27,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:27,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:24:27,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-01-09 22:24:27,865 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 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) [2025-01-09 22:24:27,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:27,925 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2025-01-09 22:24:27,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:24:27,926 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 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) Word has length 9 [2025-01-09 22:24:27,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:27,927 INFO L225 Difference]: With dead ends: 39 [2025-01-09 22:24:27,927 INFO L226 Difference]: Without dead ends: 39 [2025-01-09 22:24:27,928 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2025-01-09 22:24:27,928 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:27,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-01-09 22:24:27,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-01-09 22:24:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.5) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:27,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2025-01-09 22:24:27,933 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 9 [2025-01-09 22:24:27,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:27,934 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2025-01-09 22:24:27,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 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) [2025-01-09 22:24:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2025-01-09 22:24:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 22:24:27,934 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:27,934 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:27,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 22:24:28,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:28,135 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:28,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:28,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1391186828, now seen corresponding path program 1 times [2025-01-09 22:24:28,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:28,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413290438] [2025-01-09 22:24:28,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:28,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:28,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 22:24:28,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 22:24:28,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:28,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:28,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413290438] [2025-01-09 22:24:28,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413290438] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949160441] [2025-01-09 22:24:28,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:28,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:28,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:28,224 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:28,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-01-09 22:24:28,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 22:24:28,267 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 22:24:28,267 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:28,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:28,268 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 22:24:28,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:28,334 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:28,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:28,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949160441] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:28,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:28,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-01-09 22:24:28,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180525325] [2025-01-09 22:24:28,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:28,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 22:24:28,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:28,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 22:24:28,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-01-09 22:24:28,369 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) [2025-01-09 22:24:28,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:28,492 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2025-01-09 22:24:28,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 22:24:28,492 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) Word has length 10 [2025-01-09 22:24:28,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:28,494 INFO L225 Difference]: With dead ends: 65 [2025-01-09 22:24:28,494 INFO L226 Difference]: Without dead ends: 65 [2025-01-09 22:24:28,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2025-01-09 22:24:28,495 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 85 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:28,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 21 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-01-09 22:24:28,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 38. [2025-01-09 22:24:28,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2025-01-09 22:24:28,501 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 10 [2025-01-09 22:24:28,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:28,501 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2025-01-09 22:24:28,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 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) [2025-01-09 22:24:28,501 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2025-01-09 22:24:28,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 22:24:28,502 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:28,502 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:28,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 22:24:28,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:28,703 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:28,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:28,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1391178885, now seen corresponding path program 1 times [2025-01-09 22:24:28,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:28,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919606706] [2025-01-09 22:24:28,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:28,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:28,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 22:24:28,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 22:24:28,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:28,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:28,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:28,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919606706] [2025-01-09 22:24:28,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919606706] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:28,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534342496] [2025-01-09 22:24:28,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:28,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:28,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:28,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:28,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-01-09 22:24:28,894 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 22:24:28,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 22:24:28,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:28,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:28,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 22:24:28,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:28,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2025-01-09 22:24:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:29,040 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:29,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534342496] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:29,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:29,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-09 22:24:29,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134680968] [2025-01-09 22:24:29,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:29,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 22:24:29,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:29,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 22:24:29,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-01-09 22:24:29,138 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:29,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:29,253 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2025-01-09 22:24:29,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:24:29,253 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-01-09 22:24:29,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:29,254 INFO L225 Difference]: With dead ends: 39 [2025-01-09 22:24:29,254 INFO L226 Difference]: Without dead ends: 39 [2025-01-09 22:24:29,254 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2025-01-09 22:24:29,255 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 77 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:29,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 32 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:29,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-01-09 22:24:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-01-09 22:24:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.375) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2025-01-09 22:24:29,258 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 10 [2025-01-09 22:24:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:29,258 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2025-01-09 22:24:29,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2025-01-09 22:24:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 22:24:29,259 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:29,259 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:29,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-09 22:24:29,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:29,460 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:29,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:29,460 INFO L85 PathProgramCache]: Analyzing trace with hash -718321913, now seen corresponding path program 2 times [2025-01-09 22:24:29,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:29,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539696938] [2025-01-09 22:24:29,460 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:29,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:29,470 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-09 22:24:29,475 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 14 statements. [2025-01-09 22:24:29,475 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 22:24:29,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:24:29,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:29,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539696938] [2025-01-09 22:24:29,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539696938] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:29,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:29,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 22:24:29,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193180717] [2025-01-09 22:24:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:29,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 22:24:29,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:29,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 22:24:29,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:24:29,511 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:29,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:29,527 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2025-01-09 22:24:29,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:24:29,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 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 14 [2025-01-09 22:24:29,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:29,528 INFO L225 Difference]: With dead ends: 37 [2025-01-09 22:24:29,528 INFO L226 Difference]: Without dead ends: 37 [2025-01-09 22:24:29,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:24:29,529 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:29,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:29,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-09 22:24:29,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-01-09 22:24:29,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.3125) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:29,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2025-01-09 22:24:29,535 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 14 [2025-01-09 22:24:29,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:29,536 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2025-01-09 22:24:29,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:29,536 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2025-01-09 22:24:29,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 22:24:29,536 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:29,536 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:29,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 22:24:29,536 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:29,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:29,537 INFO L85 PathProgramCache]: Analyzing trace with hash -718321912, now seen corresponding path program 1 times [2025-01-09 22:24:29,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:29,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622936937] [2025-01-09 22:24:29,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:29,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:29,545 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 22:24:29,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 22:24:29,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:29,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:24:29,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:29,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622936937] [2025-01-09 22:24:29,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622936937] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:29,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:29,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:24:29,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228041412] [2025-01-09 22:24:29,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:29,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:29,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:29,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:29,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:29,690 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) 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) [2025-01-09 22:24:29,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:29,724 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2025-01-09 22:24:29,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:24:29,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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 14 [2025-01-09 22:24:29,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:29,725 INFO L225 Difference]: With dead ends: 61 [2025-01-09 22:24:29,725 INFO L226 Difference]: Without dead ends: 61 [2025-01-09 22:24:29,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:29,726 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:29,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 34 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:29,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-09 22:24:29,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2025-01-09 22:24:29,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2025-01-09 22:24:29,730 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 14 [2025-01-09 22:24:29,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:29,730 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2025-01-09 22:24:29,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) 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) [2025-01-09 22:24:29,730 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2025-01-09 22:24:29,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 22:24:29,730 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:29,730 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:29,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 22:24:29,731 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:29,731 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:29,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1902927285, now seen corresponding path program 1 times [2025-01-09 22:24:29,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:29,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097222244] [2025-01-09 22:24:29,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:29,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:29,737 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 22:24:29,742 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 22:24:29,742 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:29,742 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:24:29,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097222244] [2025-01-09 22:24:29,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097222244] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:29,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660160914] [2025-01-09 22:24:29,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:29,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:29,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:29,846 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:29,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-01-09 22:24:29,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 22:24:29,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 22:24:29,906 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:29,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:29,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 22:24:29,908 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:24:30,016 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:30,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 22 treesize of output 18 [2025-01-09 22:24:30,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:24:30,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660160914] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:30,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:30,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-01-09 22:24:30,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832919999] [2025-01-09 22:24:30,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:30,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 22:24:30,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:30,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 22:24:30,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-01-09 22:24:30,119 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:30,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:30,200 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2025-01-09 22:24:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:24:30,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-01-09 22:24:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:30,201 INFO L225 Difference]: With dead ends: 63 [2025-01-09 22:24:30,201 INFO L226 Difference]: Without dead ends: 63 [2025-01-09 22:24:30,202 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-01-09 22:24:30,202 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 42 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:30,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 35 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:30,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-01-09 22:24:30,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2025-01-09 22:24:30,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 58 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:30,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2025-01-09 22:24:30,206 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 18 [2025-01-09 22:24:30,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:30,206 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2025-01-09 22:24:30,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:30,207 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2025-01-09 22:24:30,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 22:24:30,207 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:30,207 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:30,217 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 22:24:30,413 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,SelfDestructingSolverStorable10 [2025-01-09 22:24:30,413 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:30,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:30,413 INFO L85 PathProgramCache]: Analyzing trace with hash -833431295, now seen corresponding path program 1 times [2025-01-09 22:24:30,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:30,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164200635] [2025-01-09 22:24:30,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:30,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:30,420 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 22:24:30,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:30,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:30,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:30,536 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:24:30,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:30,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164200635] [2025-01-09 22:24:30,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164200635] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:30,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058869932] [2025-01-09 22:24:30,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:30,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:30,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:30,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:30,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-01-09 22:24:30,591 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 22:24:30,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:30,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:30,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:30,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 22:24:30,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:30,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:30,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:30,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:30,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058869932] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:30,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:30,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2025-01-09 22:24:30,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59750984] [2025-01-09 22:24:30,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:30,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-01-09 22:24:30,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:30,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-01-09 22:24:30,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2025-01-09 22:24:30,788 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:30,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:30,967 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2025-01-09 22:24:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 22:24:30,967 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-01-09 22:24:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:30,968 INFO L225 Difference]: With dead ends: 121 [2025-01-09 22:24:30,968 INFO L226 Difference]: Without dead ends: 121 [2025-01-09 22:24:30,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=121, Unknown=0, NotChecked=0, Total=210 [2025-01-09 22:24:30,969 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 92 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:30,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 45 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-01-09 22:24:30,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2025-01-09 22:24:30,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.290909090909091) internal successors, (142), 114 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:30,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 142 transitions. [2025-01-09 22:24:30,981 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 142 transitions. Word has length 21 [2025-01-09 22:24:30,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:30,981 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 142 transitions. [2025-01-09 22:24:30,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:30,981 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2025-01-09 22:24:30,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 22:24:30,982 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:30,982 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1] [2025-01-09 22:24:30,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:31,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-01-09 22:24:31,183 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:31,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2024478536, now seen corresponding path program 2 times [2025-01-09 22:24:31,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:31,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162312318] [2025-01-09 22:24:31,184 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:31,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:31,192 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 22:24:31,201 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:31,201 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:31,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:31,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:31,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162312318] [2025-01-09 22:24:31,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162312318] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:31,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247151781] [2025-01-09 22:24:31,314 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:31,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:31,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:31,316 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:31,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-01-09 22:24:31,354 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 22:24:31,367 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:31,367 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:31,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:31,368 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 22:24:31,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:31,445 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:24:31,445 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:24:31,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247151781] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:31,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 22:24:31,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2025-01-09 22:24:31,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972159503] [2025-01-09 22:24:31,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:31,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:24:31,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:31,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:24:31,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-01-09 22:24:31,446 INFO L87 Difference]: Start difference. First operand 115 states and 142 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:31,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:31,522 INFO L93 Difference]: Finished difference Result 105 states and 127 transitions. [2025-01-09 22:24:31,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:24:31,523 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-01-09 22:24:31,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:31,523 INFO L225 Difference]: With dead ends: 105 [2025-01-09 22:24:31,523 INFO L226 Difference]: Without dead ends: 105 [2025-01-09 22:24:31,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2025-01-09 22:24:31,524 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:31,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 38 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:31,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-01-09 22:24:31,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-01-09 22:24:31,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.27) internal successors, (127), 104 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:31,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2025-01-09 22:24:31,532 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 21 [2025-01-09 22:24:31,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:31,532 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2025-01-09 22:24:31,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:31,532 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2025-01-09 22:24:31,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 22:24:31,532 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:31,533 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-09 22:24:31,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 22:24:31,733 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,SelfDestructingSolverStorable12 [2025-01-09 22:24:31,733 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:31,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:31,734 INFO L85 PathProgramCache]: Analyzing trace with hash 400899735, now seen corresponding path program 1 times [2025-01-09 22:24:31,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:31,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265040042] [2025-01-09 22:24:31,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:31,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:31,742 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 22:24:31,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 22:24:31,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:31,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:31,913 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:24:31,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:31,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265040042] [2025-01-09 22:24:31,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265040042] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:31,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560487582] [2025-01-09 22:24:31,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:31,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:31,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:31,916 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:31,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-01-09 22:24:31,960 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 22:24:31,978 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 22:24:31,978 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:31,978 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:31,981 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 22:24:31,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:24:32,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:32,139 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:24:32,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560487582] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:32,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:32,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2025-01-09 22:24:32,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967978682] [2025-01-09 22:24:32,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:32,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 22:24:32,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:32,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 22:24:32,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-01-09 22:24:32,141 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:32,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:32,310 INFO L93 Difference]: Finished difference Result 105 states and 124 transitions. [2025-01-09 22:24:32,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 22:24:32,310 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 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) Word has length 27 [2025-01-09 22:24:32,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:32,311 INFO L225 Difference]: With dead ends: 105 [2025-01-09 22:24:32,311 INFO L226 Difference]: Without dead ends: 105 [2025-01-09 22:24:32,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2025-01-09 22:24:32,312 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:32,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 24 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:32,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-01-09 22:24:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-01-09 22:24:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.24) internal successors, (124), 104 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:32,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2025-01-09 22:24:32,323 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 27 [2025-01-09 22:24:32,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:32,323 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2025-01-09 22:24:32,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:32,323 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2025-01-09 22:24:32,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 22:24:32,323 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:32,324 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-09 22:24:32,332 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 22:24:32,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:32,524 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:32,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:32,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1510481170, now seen corresponding path program 2 times [2025-01-09 22:24:32,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:32,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459369475] [2025-01-09 22:24:32,525 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:32,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:32,533 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-09 22:24:32,544 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 22:24:32,545 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:32,545 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 22:24:32,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459369475] [2025-01-09 22:24:32,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459369475] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:32,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339421198] [2025-01-09 22:24:32,871 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:32,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:32,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:32,874 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:32,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-01-09 22:24:32,918 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-09 22:24:32,938 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 22:24:32,938 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:32,938 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:32,940 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 22:24:32,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:32,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:24:32,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2025-01-09 22:24:32,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2025-01-09 22:24:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 22:24:33,363 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:24:33,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339421198] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:33,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 22:24:33,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-01-09 22:24:33,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101068430] [2025-01-09 22:24:33,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:33,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:24:33,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:33,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:24:33,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-01-09 22:24:33,365 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 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) [2025-01-09 22:24:33,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:33,453 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2025-01-09 22:24:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:24:33,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 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) Word has length 31 [2025-01-09 22:24:33,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:33,454 INFO L225 Difference]: With dead ends: 104 [2025-01-09 22:24:33,454 INFO L226 Difference]: Without dead ends: 104 [2025-01-09 22:24:33,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-01-09 22:24:33,456 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:33,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:33,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-01-09 22:24:33,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2025-01-09 22:24:33,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 100 states have (on average 1.21) internal successors, (121), 103 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:33,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2025-01-09 22:24:33,462 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 121 transitions. Word has length 31 [2025-01-09 22:24:33,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:33,462 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 121 transitions. [2025-01-09 22:24:33,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 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) [2025-01-09 22:24:33,462 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 121 transitions. [2025-01-09 22:24:33,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 22:24:33,463 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:33,463 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:33,471 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-01-09 22:24:33,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-01-09 22:24:33,664 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:33,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:33,664 INFO L85 PathProgramCache]: Analyzing trace with hash 135471689, now seen corresponding path program 1 times [2025-01-09 22:24:33,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:33,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004694346] [2025-01-09 22:24:33,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:33,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:33,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 22:24:33,687 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 22:24:33,687 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:33,687 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 53 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-01-09 22:24:33,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:33,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004694346] [2025-01-09 22:24:33,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004694346] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:33,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465882428] [2025-01-09 22:24:33,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:33,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:33,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:33,827 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:33,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-01-09 22:24:33,874 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 22:24:33,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 22:24:33,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:33,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:33,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 22:24:33,898 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 42 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 22:24:34,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 42 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 22:24:34,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465882428] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:34,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:34,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2025-01-09 22:24:34,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136701788] [2025-01-09 22:24:34,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:34,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 22:24:34,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:34,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 22:24:34,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-01-09 22:24:34,114 INFO L87 Difference]: Start difference. First operand 104 states and 121 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:34,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:34,288 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2025-01-09 22:24:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 22:24:34,288 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 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) Word has length 34 [2025-01-09 22:24:34,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:34,289 INFO L225 Difference]: With dead ends: 98 [2025-01-09 22:24:34,289 INFO L226 Difference]: Without dead ends: 98 [2025-01-09 22:24:34,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2025-01-09 22:24:34,290 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:34,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 38 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:34,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-01-09 22:24:34,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2025-01-09 22:24:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 94 states have (on average 1.1808510638297873) internal successors, (111), 97 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2025-01-09 22:24:34,295 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 34 [2025-01-09 22:24:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:34,295 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2025-01-09 22:24:34,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2025-01-09 22:24:34,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-09 22:24:34,297 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:34,297 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 3, 2, 2, 2, 2, 1, 1, 1] [2025-01-09 22:24:34,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-01-09 22:24:34,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:34,499 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:34,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:34,499 INFO L85 PathProgramCache]: Analyzing trace with hash 203329363, now seen corresponding path program 2 times [2025-01-09 22:24:34,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:34,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733869305] [2025-01-09 22:24:34,499 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:34,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:34,512 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-01-09 22:24:34,524 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 22:24:34,524 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:34,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:34,753 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 24 proven. 144 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 22:24:34,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:34,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733869305] [2025-01-09 22:24:34,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733869305] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:34,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176175247] [2025-01-09 22:24:34,754 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:34,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:34,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:34,756 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:34,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-01-09 22:24:34,813 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-01-09 22:24:34,842 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 22:24:34,842 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:34,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:34,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 22:24:34,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:35,002 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 37 proven. 131 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 22:24:35,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 37 proven. 131 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 22:24:35,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176175247] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:35,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:35,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2025-01-09 22:24:35,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543787443] [2025-01-09 22:24:35,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:35,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 22:24:35,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:35,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 22:24:35,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2025-01-09 22:24:35,121 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:35,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:35,388 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2025-01-09 22:24:35,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 22:24:35,388 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-01-09 22:24:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:35,389 INFO L225 Difference]: With dead ends: 96 [2025-01-09 22:24:35,389 INFO L226 Difference]: Without dead ends: 96 [2025-01-09 22:24:35,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2025-01-09 22:24:35,390 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:35,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 38 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-01-09 22:24:35,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-01-09 22:24:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.1521739130434783) internal successors, (106), 95 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:35,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2025-01-09 22:24:35,396 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 51 [2025-01-09 22:24:35,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:35,396 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2025-01-09 22:24:35,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:35,396 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2025-01-09 22:24:35,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-01-09 22:24:35,397 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:35,397 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 4, 3, 3, 3, 3, 1, 1, 1] [2025-01-09 22:24:35,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-01-09 22:24:35,598 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,SelfDestructingSolverStorable16 [2025-01-09 22:24:35,598 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:35,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:35,599 INFO L85 PathProgramCache]: Analyzing trace with hash 174954377, now seen corresponding path program 3 times [2025-01-09 22:24:35,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:35,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825727696] [2025-01-09 22:24:35,599 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:35,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:35,611 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 68 statements into 11 equivalence classes. [2025-01-09 22:24:35,648 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 68 statements. [2025-01-09 22:24:35,648 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-09 22:24:35,648 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:35,803 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 191 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-01-09 22:24:35,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:35,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825727696] [2025-01-09 22:24:35,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825727696] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:35,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518188442] [2025-01-09 22:24:35,803 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:35,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:35,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:35,806 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:35,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-01-09 22:24:35,867 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 68 statements into 11 equivalence classes. [2025-01-09 22:24:35,900 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 68 statements. [2025-01-09 22:24:35,900 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-01-09 22:24:35,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:35,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 22:24:35,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 159 proven. 32 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-01-09 22:24:35,975 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 159 proven. 32 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-01-09 22:24:36,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518188442] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:36,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:36,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 19 [2025-01-09 22:24:36,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652384655] [2025-01-09 22:24:36,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:36,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-01-09 22:24:36,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:36,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-01-09 22:24:36,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2025-01-09 22:24:36,102 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 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) [2025-01-09 22:24:36,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:36,417 INFO L93 Difference]: Finished difference Result 119 states and 140 transitions. [2025-01-09 22:24:36,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 22:24:36,417 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 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) Word has length 68 [2025-01-09 22:24:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:36,418 INFO L225 Difference]: With dead ends: 119 [2025-01-09 22:24:36,418 INFO L226 Difference]: Without dead ends: 119 [2025-01-09 22:24:36,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2025-01-09 22:24:36,419 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:36,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 108 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:36,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-01-09 22:24:36,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2025-01-09 22:24:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.2173913043478262) internal successors, (140), 118 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 140 transitions. [2025-01-09 22:24:36,424 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 140 transitions. Word has length 68 [2025-01-09 22:24:36,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:36,424 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 140 transitions. [2025-01-09 22:24:36,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.105263157894737) internal successors, (78), 20 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) [2025-01-09 22:24:36,425 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 140 transitions. [2025-01-09 22:24:36,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-01-09 22:24:36,426 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:36,426 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 4, 3, 3, 3, 3, 1, 1, 1] [2025-01-09 22:24:36,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:36,626 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,SelfDestructingSolverStorable17 [2025-01-09 22:24:36,627 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:36,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:36,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1128618437, now seen corresponding path program 1 times [2025-01-09 22:24:36,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:36,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149853810] [2025-01-09 22:24:36,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:36,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:36,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-01-09 22:24:36,651 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-01-09 22:24:36,651 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:36,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 177 proven. 123 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-01-09 22:24:36,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149853810] [2025-01-09 22:24:36,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149853810] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:36,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483152149] [2025-01-09 22:24:36,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:36,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:36,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:36,815 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:36,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-01-09 22:24:36,872 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-01-09 22:24:36,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-01-09 22:24:36,911 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:36,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:36,913 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 22:24:36,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 212 proven. 88 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-01-09 22:24:37,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:37,134 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 212 proven. 88 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-01-09 22:24:37,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483152149] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:37,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:37,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-01-09 22:24:37,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157609567] [2025-01-09 22:24:37,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:37,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 22:24:37,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:37,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 22:24:37,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2025-01-09 22:24:37,137 INFO L87 Difference]: Start difference. First operand 119 states and 140 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:37,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:37,427 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2025-01-09 22:24:37,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 22:24:37,428 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-01-09 22:24:37,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:37,429 INFO L225 Difference]: With dead ends: 119 [2025-01-09 22:24:37,429 INFO L226 Difference]: Without dead ends: 119 [2025-01-09 22:24:37,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 127 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2025-01-09 22:24:37,430 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 49 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:37,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 45 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:24:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-01-09 22:24:37,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2025-01-09 22:24:37,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.2) internal successors, (138), 118 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:37,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2025-01-09 22:24:37,434 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 69 [2025-01-09 22:24:37,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:37,434 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2025-01-09 22:24:37,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:37,435 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2025-01-09 22:24:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-09 22:24:37,435 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:37,435 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 4, 3, 3, 3, 3, 1, 1, 1] [2025-01-09 22:24:37,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-01-09 22:24:37,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:37,636 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:37,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:37,637 INFO L85 PathProgramCache]: Analyzing trace with hash 2001524394, now seen corresponding path program 2 times [2025-01-09 22:24:37,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:37,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403028317] [2025-01-09 22:24:37,637 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:37,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:37,649 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 73 statements into 2 equivalence classes. [2025-01-09 22:24:37,668 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 73 of 73 statements. [2025-01-09 22:24:37,669 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:37,669 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 15 proven. 347 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-01-09 22:24:38,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:38,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403028317] [2025-01-09 22:24:38,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403028317] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:38,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542134441] [2025-01-09 22:24:38,174 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:38,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:38,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:38,176 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:38,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-01-09 22:24:38,237 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 73 statements into 2 equivalence classes. [2025-01-09 22:24:38,273 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 73 of 73 statements. [2025-01-09 22:24:38,274 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:38,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:38,280 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 22:24:38,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:38,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-01-09 22:24:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 28 proven. 334 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-01-09 22:24:38,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 24 proven. 338 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-01-09 22:24:39,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542134441] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:39,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:39,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2025-01-09 22:24:39,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375716300] [2025-01-09 22:24:39,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:39,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-01-09 22:24:39,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:39,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-01-09 22:24:39,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2025-01-09 22:24:39,762 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 33 states, 32 states have (on average 4.53125) internal successors, (145), 33 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:41,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:41,840 INFO L93 Difference]: Finished difference Result 352 states and 410 transitions. [2025-01-09 22:24:41,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2025-01-09 22:24:41,840 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 4.53125) internal successors, (145), 33 states have internal predecessors, (145), 0 states have call successors, (0), 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 73 [2025-01-09 22:24:41,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:41,842 INFO L225 Difference]: With dead ends: 352 [2025-01-09 22:24:41,842 INFO L226 Difference]: Without dead ends: 352 [2025-01-09 22:24:41,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3215 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2149, Invalid=6407, Unknown=0, NotChecked=0, Total=8556 [2025-01-09 22:24:41,845 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 51 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:41,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 55 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 22:24:41,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2025-01-09 22:24:41,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 320. [2025-01-09 22:24:41,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 316 states have (on average 1.1898734177215189) internal successors, (376), 319 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:41,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 376 transitions. [2025-01-09 22:24:41,859 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 376 transitions. Word has length 73 [2025-01-09 22:24:41,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:41,859 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 376 transitions. [2025-01-09 22:24:41,859 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 4.53125) internal successors, (145), 33 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:41,859 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 376 transitions. [2025-01-09 22:24:41,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-01-09 22:24:41,860 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:41,861 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:41,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-01-09 22:24:42,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:42,061 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:42,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash 161298199, now seen corresponding path program 2 times [2025-01-09 22:24:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:42,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487087196] [2025-01-09 22:24:42,062 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:42,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:42,073 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-01-09 22:24:42,076 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 80 statements. [2025-01-09 22:24:42,076 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 22:24:42,076 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2025-01-09 22:24:42,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487087196] [2025-01-09 22:24:42,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487087196] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:42,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:42,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:24:42,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680267333] [2025-01-09 22:24:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:42,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:42,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:42,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:42,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:42,138 INFO L87 Difference]: Start difference. First operand 320 states and 376 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:42,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:42,154 INFO L93 Difference]: Finished difference Result 319 states and 375 transitions. [2025-01-09 22:24:42,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:24:42,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2025-01-09 22:24:42,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:42,156 INFO L225 Difference]: With dead ends: 319 [2025-01-09 22:24:42,156 INFO L226 Difference]: Without dead ends: 317 [2025-01-09 22:24:42,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:42,157 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:42,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:42,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2025-01-09 22:24:42,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 309. [2025-01-09 22:24:42,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 306 states have (on average 1.173202614379085) internal successors, (359), 308 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:42,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 359 transitions. [2025-01-09 22:24:42,168 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 359 transitions. Word has length 80 [2025-01-09 22:24:42,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:42,168 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 359 transitions. [2025-01-09 22:24:42,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:42,169 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 359 transitions. [2025-01-09 22:24:42,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-01-09 22:24:42,169 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:42,169 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:42,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-09 22:24:42,169 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:42,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:42,170 INFO L85 PathProgramCache]: Analyzing trace with hash 161301784, now seen corresponding path program 1 times [2025-01-09 22:24:42,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:42,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666236117] [2025-01-09 22:24:42,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:42,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:42,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-01-09 22:24:42,195 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-01-09 22:24:42,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:42,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:42,486 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 105 proven. 244 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-09 22:24:42,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666236117] [2025-01-09 22:24:42,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666236117] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:42,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495681105] [2025-01-09 22:24:42,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:42,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:42,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:42,489 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:42,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-01-09 22:24:42,554 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-01-09 22:24:42,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-01-09 22:24:42,592 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:42,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:42,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-01-09 22:24:42,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:42,762 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 153 proven. 196 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-09 22:24:42,763 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 153 proven. 196 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-01-09 22:24:42,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495681105] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:42,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:42,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2025-01-09 22:24:42,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824904961] [2025-01-09 22:24:42,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:42,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-01-09 22:24:42,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:42,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-01-09 22:24:42,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2025-01-09 22:24:42,938 INFO L87 Difference]: Start difference. First operand 309 states and 359 transitions. Second operand has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:43,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:43,400 INFO L93 Difference]: Finished difference Result 323 states and 370 transitions. [2025-01-09 22:24:43,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-01-09 22:24:43,400 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2025-01-09 22:24:43,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:43,401 INFO L225 Difference]: With dead ends: 323 [2025-01-09 22:24:43,402 INFO L226 Difference]: Without dead ends: 323 [2025-01-09 22:24:43,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 145 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=347, Invalid=1059, Unknown=0, NotChecked=0, Total=1406 [2025-01-09 22:24:43,404 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 63 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:43,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 29 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:24:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2025-01-09 22:24:43,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 313. [2025-01-09 22:24:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 310 states have (on average 1.1548387096774193) internal successors, (358), 312 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:43,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 358 transitions. [2025-01-09 22:24:43,419 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 358 transitions. Word has length 80 [2025-01-09 22:24:43,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:43,419 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 358 transitions. [2025-01-09 22:24:43,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.6521739130434785) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:43,420 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 358 transitions. [2025-01-09 22:24:43,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-01-09 22:24:43,420 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:43,420 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:43,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:43,620 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,SelfDestructingSolverStorable21 [2025-01-09 22:24:43,621 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:43,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:43,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2013959235, now seen corresponding path program 2 times [2025-01-09 22:24:43,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:43,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900758805] [2025-01-09 22:24:43,621 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:43,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:43,632 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 84 statements into 2 equivalence classes. [2025-01-09 22:24:43,653 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-01-09 22:24:43,653 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:43,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-01-09 22:24:43,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:43,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900758805] [2025-01-09 22:24:43,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900758805] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:43,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849817225] [2025-01-09 22:24:43,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:43,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:43,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:43,850 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:43,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-01-09 22:24:43,922 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 84 statements into 2 equivalence classes. [2025-01-09 22:24:43,965 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 84 of 84 statements. [2025-01-09 22:24:43,966 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:43,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:43,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 22:24:43,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 33 proven. 231 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2025-01-09 22:24:44,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:44,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 24 treesize of output 20 [2025-01-09 22:24:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 33 proven. 231 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2025-01-09 22:24:44,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849817225] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:44,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:44,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 18 [2025-01-09 22:24:44,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479169221] [2025-01-09 22:24:44,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:44,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 22:24:44,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:44,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 22:24:44,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2025-01-09 22:24:44,515 INFO L87 Difference]: Start difference. First operand 313 states and 358 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:44,773 INFO L93 Difference]: Finished difference Result 327 states and 373 transitions. [2025-01-09 22:24:44,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 22:24:44,774 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-01-09 22:24:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:44,775 INFO L225 Difference]: With dead ends: 327 [2025-01-09 22:24:44,775 INFO L226 Difference]: Without dead ends: 327 [2025-01-09 22:24:44,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=177, Invalid=525, Unknown=0, NotChecked=0, Total=702 [2025-01-09 22:24:44,776 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 112 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:44,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 135 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:44,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2025-01-09 22:24:44,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 316. [2025-01-09 22:24:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 313 states have (on average 1.1501597444089458) internal successors, (360), 315 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:44,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 360 transitions. [2025-01-09 22:24:44,788 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 360 transitions. Word has length 84 [2025-01-09 22:24:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:44,788 INFO L471 AbstractCegarLoop]: Abstraction has 316 states and 360 transitions. [2025-01-09 22:24:44,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 360 transitions. [2025-01-09 22:24:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2025-01-09 22:24:44,789 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:44,789 INFO L218 NwaCegarLoop]: trace histogram [19, 19, 19, 19, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1] [2025-01-09 22:24:44,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-01-09 22:24:44,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:44,990 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:44,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:44,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1223414694, now seen corresponding path program 3 times [2025-01-09 22:24:44,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:44,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394417326] [2025-01-09 22:24:44,990 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:44,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:45,004 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 112 statements into 16 equivalence classes. [2025-01-09 22:24:45,014 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 112 statements. [2025-01-09 22:24:45,014 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 22:24:45,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2025-01-09 22:24:45,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:45,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394417326] [2025-01-09 22:24:45,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394417326] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:45,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162991289] [2025-01-09 22:24:45,127 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:45,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:45,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:45,129 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:45,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-01-09 22:24:45,211 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 112 statements into 16 equivalence classes. [2025-01-09 22:24:45,223 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 112 statements. [2025-01-09 22:24:45,223 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 22:24:45,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:45,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 22:24:45,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:45,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:24:45,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2025-01-09 22:24:45,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2025-01-09 22:24:45,598 INFO L134 CoverageAnalysis]: Checked inductivity of 841 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 836 trivial. 0 not checked. [2025-01-09 22:24:45,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:24:45,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162991289] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:45,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 22:24:45,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2025-01-09 22:24:45,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715358710] [2025-01-09 22:24:45,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:45,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:24:45,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:45,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:24:45,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-01-09 22:24:45,600 INFO L87 Difference]: Start difference. First operand 316 states and 360 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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) [2025-01-09 22:24:45,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:45,626 INFO L93 Difference]: Finished difference Result 315 states and 359 transitions. [2025-01-09 22:24:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:24:45,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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) Word has length 112 [2025-01-09 22:24:45,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:45,628 INFO L225 Difference]: With dead ends: 315 [2025-01-09 22:24:45,628 INFO L226 Difference]: Without dead ends: 307 [2025-01-09 22:24:45,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-01-09 22:24:45,629 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:45,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 20 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:45,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2025-01-09 22:24:45,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2025-01-09 22:24:45,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 305 states have (on average 1.137704918032787) internal successors, (347), 306 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:45,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 347 transitions. [2025-01-09 22:24:45,637 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 347 transitions. Word has length 112 [2025-01-09 22:24:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:45,637 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 347 transitions. [2025-01-09 22:24:45,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 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) [2025-01-09 22:24:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 347 transitions. [2025-01-09 22:24:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-01-09 22:24:45,638 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:45,638 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 5, 4, 4, 4, 4, 1, 1, 1] [2025-01-09 22:24:45,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-01-09 22:24:45,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:45,843 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:45,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:45,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1475977164, now seen corresponding path program 4 times [2025-01-09 22:24:45,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:45,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771610674] [2025-01-09 22:24:45,843 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 22:24:45,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:45,860 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 121 statements into 2 equivalence classes. [2025-01-09 22:24:45,892 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 121 of 121 statements. [2025-01-09 22:24:45,892 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 22:24:45,892 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:46,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 273 proven. 918 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-01-09 22:24:46,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:46,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771610674] [2025-01-09 22:24:46,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771610674] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:46,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094145914] [2025-01-09 22:24:46,209 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 22:24:46,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:46,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:46,212 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:46,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-01-09 22:24:46,300 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 121 statements into 2 equivalence classes. [2025-01-09 22:24:46,367 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 121 of 121 statements. [2025-01-09 22:24:46,367 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 22:24:46,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:46,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 22:24:46,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 214 proven. 978 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-01-09 22:24:46,720 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:46,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 214 proven. 978 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-01-09 22:24:46,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094145914] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:46,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:46,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 36 [2025-01-09 22:24:46,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134215792] [2025-01-09 22:24:46,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:46,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 22:24:46,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:46,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 22:24:46,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=900, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 22:24:46,945 INFO L87 Difference]: Start difference. First operand 307 states and 347 transitions. Second operand has 36 states, 36 states have (on average 4.944444444444445) internal successors, (178), 36 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:47,879 INFO L93 Difference]: Finished difference Result 312 states and 343 transitions. [2025-01-09 22:24:47,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-01-09 22:24:47,880 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.944444444444445) internal successors, (178), 36 states have internal predecessors, (178), 0 states have call successors, (0), 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 121 [2025-01-09 22:24:47,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:47,881 INFO L225 Difference]: With dead ends: 312 [2025-01-09 22:24:47,881 INFO L226 Difference]: Without dead ends: 312 [2025-01-09 22:24:47,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 215 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4061 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2687, Invalid=7015, Unknown=0, NotChecked=0, Total=9702 [2025-01-09 22:24:47,884 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:47,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 22:24:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2025-01-09 22:24:47,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 308. [2025-01-09 22:24:47,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 306 states have (on average 1.1111111111111112) internal successors, (340), 307 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:47,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 340 transitions. [2025-01-09 22:24:47,891 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 340 transitions. Word has length 121 [2025-01-09 22:24:47,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:47,891 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 340 transitions. [2025-01-09 22:24:47,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.944444444444445) internal successors, (178), 36 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:47,892 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 340 transitions. [2025-01-09 22:24:47,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2025-01-09 22:24:47,893 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:47,893 INFO L218 NwaCegarLoop]: trace histogram [39, 39, 38, 38, 9, 8, 8, 8, 8, 1, 1, 1] [2025-01-09 22:24:47,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-01-09 22:24:48,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:48,094 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:48,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:48,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1023906048, now seen corresponding path program 3 times [2025-01-09 22:24:48,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:48,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731827388] [2025-01-09 22:24:48,095 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:48,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:48,115 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 198 statements into 22 equivalence classes. [2025-01-09 22:24:48,122 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 198 statements. [2025-01-09 22:24:48,122 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 22:24:48,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:48,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3386 backedges. 3 proven. 713 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2025-01-09 22:24:48,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:48,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731827388] [2025-01-09 22:24:48,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731827388] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:48,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091536783] [2025-01-09 22:24:48,358 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:48,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:48,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:48,361 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:48,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-01-09 22:24:48,475 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 198 statements into 22 equivalence classes. [2025-01-09 22:24:48,499 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 198 statements. [2025-01-09 22:24:48,500 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 22:24:48,500 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:48,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 22:24:48,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:48,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2025-01-09 22:24:48,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:24:48,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2025-01-09 22:24:49,038 INFO L134 CoverageAnalysis]: Checked inductivity of 3386 backedges. 15 proven. 686 refuted. 0 times theorem prover too weak. 2685 trivial. 0 not checked. [2025-01-09 22:24:49,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:49,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3386 backedges. 0 proven. 701 refuted. 0 times theorem prover too weak. 2685 trivial. 0 not checked. [2025-01-09 22:24:49,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091536783] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:49,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:49,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 18 [2025-01-09 22:24:49,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344282563] [2025-01-09 22:24:49,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:49,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-01-09 22:24:49,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:49,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-01-09 22:24:49,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2025-01-09 22:24:49,976 INFO L87 Difference]: Start difference. First operand 308 states and 340 transitions. Second operand has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:50,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:50,124 INFO L93 Difference]: Finished difference Result 307 states and 328 transitions. [2025-01-09 22:24:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 22:24:50,124 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 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 198 [2025-01-09 22:24:50,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:50,125 INFO L225 Difference]: With dead ends: 307 [2025-01-09 22:24:50,125 INFO L226 Difference]: Without dead ends: 307 [2025-01-09 22:24:50,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2025-01-09 22:24:50,126 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 36 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:50,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 9 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:50,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2025-01-09 22:24:50,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2025-01-09 22:24:50,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.0718954248366013) internal successors, (328), 306 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:50,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 328 transitions. [2025-01-09 22:24:50,133 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 328 transitions. Word has length 198 [2025-01-09 22:24:50,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:50,135 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 328 transitions. [2025-01-09 22:24:50,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 19 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:50,135 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 328 transitions. [2025-01-09 22:24:50,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2025-01-09 22:24:50,137 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:50,137 INFO L218 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:24:50,145 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-01-09 22:24:50,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-01-09 22:24:50,341 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:50,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:50,342 INFO L85 PathProgramCache]: Analyzing trace with hash 223278114, now seen corresponding path program 5 times [2025-01-09 22:24:50,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:50,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449697878] [2025-01-09 22:24:50,342 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 22:24:50,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:50,366 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 246 statements into 28 equivalence classes. [2025-01-09 22:24:50,468 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 128 of 246 statements. [2025-01-09 22:24:50,468 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-01-09 22:24:50,468 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:50,910 INFO L134 CoverageAnalysis]: Checked inductivity of 5441 backedges. 3020 proven. 349 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2025-01-09 22:24:50,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449697878] [2025-01-09 22:24:50,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449697878] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:50,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081576291] [2025-01-09 22:24:50,911 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 22:24:50,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:50,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:50,913 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:50,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-01-09 22:24:51,034 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 246 statements into 28 equivalence classes. [2025-01-09 22:24:51,152 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 128 of 246 statements. [2025-01-09 22:24:51,152 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-01-09 22:24:51,152 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:51,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 22:24:51,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5441 backedges. 2980 proven. 411 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2025-01-09 22:24:51,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:51,659 INFO L134 CoverageAnalysis]: Checked inductivity of 5441 backedges. 3076 proven. 315 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2025-01-09 22:24:51,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081576291] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:51,659 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:51,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 30 [2025-01-09 22:24:51,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978517330] [2025-01-09 22:24:51,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:51,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 22:24:51,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:51,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 22:24:51,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870 [2025-01-09 22:24:51,660 INFO L87 Difference]: Start difference. First operand 307 states and 328 transitions. Second operand has 30 states, 30 states have (on average 4.266666666666667) internal successors, (128), 30 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:52,287 INFO L93 Difference]: Finished difference Result 307 states and 322 transitions. [2025-01-09 22:24:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-01-09 22:24:52,287 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.266666666666667) internal successors, (128), 30 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 246 [2025-01-09 22:24:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:52,289 INFO L225 Difference]: With dead ends: 307 [2025-01-09 22:24:52,289 INFO L226 Difference]: Without dead ends: 307 [2025-01-09 22:24:52,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 470 SyntacticMatches, 9 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 769 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=681, Invalid=2075, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 22:24:52,290 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 49 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:52,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 20 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 22:24:52,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2025-01-09 22:24:52,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2025-01-09 22:24:52,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.0522875816993464) internal successors, (322), 306 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 322 transitions. [2025-01-09 22:24:52,297 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 322 transitions. Word has length 246 [2025-01-09 22:24:52,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:52,297 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 322 transitions. [2025-01-09 22:24:52,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.266666666666667) internal successors, (128), 30 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:52,297 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 322 transitions. [2025-01-09 22:24:52,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2025-01-09 22:24:52,301 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:52,301 INFO L218 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:24:52,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-01-09 22:24:52,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:52,506 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:52,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:52,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2090312099, now seen corresponding path program 6 times [2025-01-09 22:24:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:52,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032497710] [2025-01-09 22:24:52,507 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 22:24:52,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:52,532 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 266 statements into 33 equivalence classes. [2025-01-09 22:24:52,671 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) and asserted 142 of 266 statements. [2025-01-09 22:24:52,671 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2025-01-09 22:24:52,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:53,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6516 backedges. 2892 proven. 360 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2025-01-09 22:24:53,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:53,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032497710] [2025-01-09 22:24:53,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032497710] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:53,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129994038] [2025-01-09 22:24:53,149 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 22:24:53,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:53,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:53,151 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:53,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-01-09 22:24:53,277 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 266 statements into 33 equivalence classes. [2025-01-09 22:24:53,629 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) and asserted 142 of 266 statements. [2025-01-09 22:24:53,629 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2025-01-09 22:24:53,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:53,632 INFO L256 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 22:24:53,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 6516 backedges. 1165 proven. 2066 refuted. 0 times theorem prover too weak. 3285 trivial. 0 not checked. [2025-01-09 22:24:54,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:54,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6516 backedges. 126 proven. 3105 refuted. 0 times theorem prover too weak. 3285 trivial. 0 not checked. [2025-01-09 22:24:54,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129994038] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:54,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:54,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 52 [2025-01-09 22:24:54,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41833849] [2025-01-09 22:24:54,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:54,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-01-09 22:24:54,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:54,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-01-09 22:24:54,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=2278, Unknown=0, NotChecked=0, Total=2652 [2025-01-09 22:24:54,811 INFO L87 Difference]: Start difference. First operand 307 states and 322 transitions. Second operand has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 52 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:55,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:55,165 INFO L93 Difference]: Finished difference Result 448 states and 467 transitions. [2025-01-09 22:24:55,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 22:24:55,165 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 52 states have internal predecessors, (191), 0 states have call successors, (0), 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 266 [2025-01-09 22:24:55,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:55,167 INFO L225 Difference]: With dead ends: 448 [2025-01-09 22:24:55,167 INFO L226 Difference]: Without dead ends: 448 [2025-01-09 22:24:55,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 494 SyntacticMatches, 8 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1567 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=726, Invalid=3306, Unknown=0, NotChecked=0, Total=4032 [2025-01-09 22:24:55,168 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 138 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:55,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 31 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:24:55,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2025-01-09 22:24:55,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 394. [2025-01-09 22:24:55,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 1.0483460559796438) internal successors, (412), 393 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:55,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 412 transitions. [2025-01-09 22:24:55,175 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 412 transitions. Word has length 266 [2025-01-09 22:24:55,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:55,176 INFO L471 AbstractCegarLoop]: Abstraction has 394 states and 412 transitions. [2025-01-09 22:24:55,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 52 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:55,176 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 412 transitions. [2025-01-09 22:24:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2025-01-09 22:24:55,179 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:55,179 INFO L218 NwaCegarLoop]: trace histogram [56, 55, 55, 55, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:24:55,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-01-09 22:24:55,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-01-09 22:24:55,380 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:55,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:55,380 INFO L85 PathProgramCache]: Analyzing trace with hash -392526632, now seen corresponding path program 7 times [2025-01-09 22:24:55,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:55,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589779931] [2025-01-09 22:24:55,381 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 22:24:55,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:55,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 270 statements into 1 equivalence classes. [2025-01-09 22:24:55,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 270 of 270 statements. [2025-01-09 22:24:55,467 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:55,467 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:56,089 INFO L134 CoverageAnalysis]: Checked inductivity of 6743 backedges. 4172 proven. 517 refuted. 0 times theorem prover too weak. 2054 trivial. 0 not checked. [2025-01-09 22:24:56,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589779931] [2025-01-09 22:24:56,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589779931] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:56,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515420014] [2025-01-09 22:24:56,089 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 22:24:56,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:56,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:56,095 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:56,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-01-09 22:24:56,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 270 statements into 1 equivalence classes. [2025-01-09 22:24:56,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 270 of 270 statements. [2025-01-09 22:24:56,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:56,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:56,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 22:24:56,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 6743 backedges. 4183 proven. 601 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2025-01-09 22:24:56,633 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:56,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6743 backedges. 4183 proven. 601 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2025-01-09 22:24:56,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515420014] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:56,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:56,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 29 [2025-01-09 22:24:56,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838540812] [2025-01-09 22:24:56,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:56,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 22:24:56,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:56,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 22:24:56,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=648, Unknown=0, NotChecked=0, Total=812 [2025-01-09 22:24:56,835 INFO L87 Difference]: Start difference. First operand 394 states and 412 transitions. Second operand has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:57,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:57,742 INFO L93 Difference]: Finished difference Result 307 states and 317 transitions. [2025-01-09 22:24:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-01-09 22:24:57,742 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 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 270 [2025-01-09 22:24:57,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:57,743 INFO L225 Difference]: With dead ends: 307 [2025-01-09 22:24:57,743 INFO L226 Difference]: Without dead ends: 307 [2025-01-09 22:24:57,745 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 518 SyntacticMatches, 11 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=806, Invalid=3226, Unknown=0, NotChecked=0, Total=4032 [2025-01-09 22:24:57,745 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 53 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:57,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 29 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 22:24:57,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2025-01-09 22:24:57,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2025-01-09 22:24:57,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.0359477124183007) internal successors, (317), 306 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:57,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 317 transitions. [2025-01-09 22:24:57,751 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 317 transitions. Word has length 270 [2025-01-09 22:24:57,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:57,751 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 317 transitions. [2025-01-09 22:24:57,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.0344827586206895) internal successors, (146), 29 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:57,752 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 317 transitions. [2025-01-09 22:24:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2025-01-09 22:24:57,755 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:57,755 INFO L218 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:24:57,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:57,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-01-09 22:24:57,959 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:57,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1437434851, now seen corresponding path program 8 times [2025-01-09 22:24:57,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:57,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389443740] [2025-01-09 22:24:57,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:57,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:57,982 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 282 statements into 2 equivalence classes. [2025-01-09 22:24:58,028 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 282 of 282 statements. [2025-01-09 22:24:58,029 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:58,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:58,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7448 backedges. 4970 proven. 348 refuted. 0 times theorem prover too weak. 2130 trivial. 0 not checked. [2025-01-09 22:24:58,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:58,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389443740] [2025-01-09 22:24:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389443740] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:58,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345084790] [2025-01-09 22:24:58,759 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:58,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:58,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:58,762 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:24:58,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-01-09 22:24:58,913 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 282 statements into 2 equivalence classes. [2025-01-09 22:24:59,041 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 282 of 282 statements. [2025-01-09 22:24:59,041 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:59,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:59,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 22:24:59,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:59,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7448 backedges. 5060 proven. 922 refuted. 0 times theorem prover too weak. 1466 trivial. 0 not checked. [2025-01-09 22:24:59,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7448 backedges. 5060 proven. 922 refuted. 0 times theorem prover too weak. 1466 trivial. 0 not checked. [2025-01-09 22:24:59,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345084790] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:59,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:59,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 34 [2025-01-09 22:24:59,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606957204] [2025-01-09 22:24:59,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:59,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-01-09 22:24:59,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:59,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-01-09 22:24:59,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2025-01-09 22:24:59,712 INFO L87 Difference]: Start difference. First operand 307 states and 317 transitions. Second operand has 34 states, 34 states have (on average 5.029411764705882) internal successors, (171), 34 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:01,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:01,035 INFO L93 Difference]: Finished difference Result 307 states and 313 transitions. [2025-01-09 22:25:01,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-01-09 22:25:01,035 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.029411764705882) internal successors, (171), 34 states have internal predecessors, (171), 0 states have call successors, (0), 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 282 [2025-01-09 22:25:01,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:01,036 INFO L225 Difference]: With dead ends: 307 [2025-01-09 22:25:01,036 INFO L226 Difference]: Without dead ends: 307 [2025-01-09 22:25:01,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 626 GetRequests, 537 SyntacticMatches, 13 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1823 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1127, Invalid=4879, Unknown=0, NotChecked=0, Total=6006 [2025-01-09 22:25:01,038 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 60 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:01,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 31 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 22:25:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2025-01-09 22:25:01,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2025-01-09 22:25:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.022875816993464) internal successors, (313), 306 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:01,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 313 transitions. [2025-01-09 22:25:01,043 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 313 transitions. Word has length 282 [2025-01-09 22:25:01,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:01,043 INFO L471 AbstractCegarLoop]: Abstraction has 307 states and 313 transitions. [2025-01-09 22:25:01,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.029411764705882) internal successors, (171), 34 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:01,043 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 313 transitions. [2025-01-09 22:25:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-01-09 22:25:01,046 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:01,046 INFO L218 NwaCegarLoop]: trace histogram [62, 61, 61, 61, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:25:01,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-01-09 22:25:01,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:01,247 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:01,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:01,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1075831480, now seen corresponding path program 9 times [2025-01-09 22:25:01,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:01,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144948665] [2025-01-09 22:25:01,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:25:01,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:01,272 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 294 statements into 33 equivalence classes. [2025-01-09 22:25:01,299 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 91 of 294 statements. [2025-01-09 22:25:01,299 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-09 22:25:01,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8189 backedges. 2241 proven. 200 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2025-01-09 22:25:01,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:01,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144948665] [2025-01-09 22:25:01,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144948665] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:01,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18175657] [2025-01-09 22:25:01,491 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:25:01,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:01,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:01,493 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:01,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-01-09 22:25:01,661 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 294 statements into 33 equivalence classes. [2025-01-09 22:25:01,791 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 91 of 294 statements. [2025-01-09 22:25:01,792 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-09 22:25:01,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:01,795 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-09 22:25:01,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:01,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8189 backedges. 2241 proven. 200 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2025-01-09 22:25:01,884 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8189 backedges. 2241 proven. 200 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2025-01-09 22:25:02,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18175657] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:02,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:02,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2025-01-09 22:25:02,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472429387] [2025-01-09 22:25:02,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:02,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 22:25:02,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:02,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 22:25:02,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2025-01-09 22:25:02,182 INFO L87 Difference]: Start difference. First operand 307 states and 313 transitions. Second operand has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:04,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:04,393 INFO L93 Difference]: Finished difference Result 355 states and 373 transitions. [2025-01-09 22:25:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 22:25:04,393 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2025-01-09 22:25:04,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:04,395 INFO L225 Difference]: With dead ends: 355 [2025-01-09 22:25:04,395 INFO L226 Difference]: Without dead ends: 355 [2025-01-09 22:25:04,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2025-01-09 22:25:04,395 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 28 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:04,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 51 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:25:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-01-09 22:25:04,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2025-01-09 22:25:04,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.0536723163841808) internal successors, (373), 354 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:04,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 373 transitions. [2025-01-09 22:25:04,401 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 373 transitions. Word has length 294 [2025-01-09 22:25:04,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:04,402 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 373 transitions. [2025-01-09 22:25:04,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 373 transitions. [2025-01-09 22:25:04,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2025-01-09 22:25:04,404 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:04,404 INFO L218 NwaCegarLoop]: trace histogram [74, 73, 73, 73, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:25:04,413 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-01-09 22:25:04,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:04,608 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:04,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:04,609 INFO L85 PathProgramCache]: Analyzing trace with hash -941153932, now seen corresponding path program 10 times [2025-01-09 22:25:04,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:04,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894716853] [2025-01-09 22:25:04,609 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 22:25:04,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:04,638 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 342 statements into 2 equivalence classes. [2025-01-09 22:25:04,732 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 342 of 342 statements. [2025-01-09 22:25:04,733 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 22:25:04,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:05,504 INFO L134 CoverageAnalysis]: Checked inductivity of 11513 backedges. 7793 proven. 1520 refuted. 0 times theorem prover too weak. 2200 trivial. 0 not checked. [2025-01-09 22:25:05,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:05,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894716853] [2025-01-09 22:25:05,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894716853] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:05,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165415878] [2025-01-09 22:25:05,504 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 22:25:05,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:05,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:05,507 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:05,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-01-09 22:25:05,696 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 342 statements into 2 equivalence classes. [2025-01-09 22:25:06,028 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 342 of 342 statements. [2025-01-09 22:25:06,028 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 22:25:06,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:06,033 INFO L256 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-01-09 22:25:06,037 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:06,351 INFO L134 CoverageAnalysis]: Checked inductivity of 11513 backedges. 7969 proven. 1338 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked. [2025-01-09 22:25:06,352 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:06,691 INFO L134 CoverageAnalysis]: Checked inductivity of 11513 backedges. 7969 proven. 1338 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked. [2025-01-09 22:25:06,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165415878] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:06,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:06,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 30 [2025-01-09 22:25:06,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854133638] [2025-01-09 22:25:06,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:06,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-01-09 22:25:06,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:06,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-01-09 22:25:06,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=667, Unknown=0, NotChecked=0, Total=870 [2025-01-09 22:25:06,693 INFO L87 Difference]: Start difference. First operand 355 states and 373 transitions. Second operand has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:07,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:07,617 INFO L93 Difference]: Finished difference Result 355 states and 370 transitions. [2025-01-09 22:25:07,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2025-01-09 22:25:07,617 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 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 342 [2025-01-09 22:25:07,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:07,618 INFO L225 Difference]: With dead ends: 355 [2025-01-09 22:25:07,618 INFO L226 Difference]: Without dead ends: 355 [2025-01-09 22:25:07,620 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 659 SyntacticMatches, 16 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1968 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1772, Invalid=5034, Unknown=0, NotChecked=0, Total=6806 [2025-01-09 22:25:07,621 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:07,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 31 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 22:25:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-01-09 22:25:07,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2025-01-09 22:25:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.0451977401129944) internal successors, (370), 354 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 370 transitions. [2025-01-09 22:25:07,628 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 370 transitions. Word has length 342 [2025-01-09 22:25:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:07,629 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 370 transitions. [2025-01-09 22:25:07,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.0) internal successors, (150), 30 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:07,629 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 370 transitions. [2025-01-09 22:25:07,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2025-01-09 22:25:07,631 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:07,631 INFO L218 NwaCegarLoop]: trace histogram [76, 75, 75, 75, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:25:07,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-01-09 22:25:07,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-01-09 22:25:07,832 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:07,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:07,832 INFO L85 PathProgramCache]: Analyzing trace with hash 828262228, now seen corresponding path program 11 times [2025-01-09 22:25:07,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:07,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498039047] [2025-01-09 22:25:07,832 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 22:25:07,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:07,854 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 350 statements into 33 equivalence classes. [2025-01-09 22:25:08,546 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 345 of 350 statements. [2025-01-09 22:25:08,547 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-01-09 22:25:08,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12123 backedges. 7889 proven. 529 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2025-01-09 22:25:09,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:09,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498039047] [2025-01-09 22:25:09,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498039047] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:09,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747439375] [2025-01-09 22:25:09,301 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 22:25:09,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:09,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:09,303 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:09,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-01-09 22:25:09,474 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 350 statements into 33 equivalence classes. [2025-01-09 22:25:10,487 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 345 of 350 statements. [2025-01-09 22:25:10,487 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-01-09 22:25:10,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:10,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 22:25:10,497 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12123 backedges. 8479 proven. 2144 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2025-01-09 22:25:10,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:11,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12123 backedges. 8967 proven. 1656 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2025-01-09 22:25:11,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747439375] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:11,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:11,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2025-01-09 22:25:11,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125275859] [2025-01-09 22:25:11,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:11,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 22:25:11,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:11,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 22:25:11,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 22:25:11,336 INFO L87 Difference]: Start difference. First operand 355 states and 370 transitions. Second operand has 46 states, 46 states have (on average 4.565217391304348) internal successors, (210), 46 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:13,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:13,023 INFO L93 Difference]: Finished difference Result 355 states and 368 transitions. [2025-01-09 22:25:13,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-01-09 22:25:13,023 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.565217391304348) internal successors, (210), 46 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 350 [2025-01-09 22:25:13,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:13,024 INFO L225 Difference]: With dead ends: 355 [2025-01-09 22:25:13,024 INFO L226 Difference]: Without dead ends: 355 [2025-01-09 22:25:13,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 661 SyntacticMatches, 16 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3143 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2245, Invalid=8261, Unknown=0, NotChecked=0, Total=10506 [2025-01-09 22:25:13,026 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 1969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:13,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 56 Invalid, 1969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-01-09 22:25:13,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-01-09 22:25:13,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2025-01-09 22:25:13,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.03954802259887) internal successors, (368), 354 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 368 transitions. [2025-01-09 22:25:13,032 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 368 transitions. Word has length 350 [2025-01-09 22:25:13,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:13,032 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 368 transitions. [2025-01-09 22:25:13,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.565217391304348) internal successors, (210), 46 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:13,033 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 368 transitions. [2025-01-09 22:25:13,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-01-09 22:25:13,034 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:13,035 INFO L218 NwaCegarLoop]: trace histogram [77, 76, 76, 76, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:25:13,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-01-09 22:25:13,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-01-09 22:25:13,237 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:13,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:13,238 INFO L85 PathProgramCache]: Analyzing trace with hash -615197105, now seen corresponding path program 12 times [2025-01-09 22:25:13,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:13,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905024652] [2025-01-09 22:25:13,238 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 22:25:13,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:13,265 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 354 statements into 33 equivalence classes. [2025-01-09 22:25:13,474 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) and asserted 233 of 354 statements. [2025-01-09 22:25:13,475 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2025-01-09 22:25:13,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 12434 backedges. 2422 proven. 5322 refuted. 0 times theorem prover too weak. 4690 trivial. 0 not checked. [2025-01-09 22:25:14,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:14,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905024652] [2025-01-09 22:25:14,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905024652] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:14,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195333244] [2025-01-09 22:25:14,333 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 22:25:14,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:14,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:14,335 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:14,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-01-09 22:25:14,519 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 354 statements into 33 equivalence classes. [2025-01-09 22:25:14,884 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) and asserted 233 of 354 statements. [2025-01-09 22:25:14,884 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2025-01-09 22:25:14,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:14,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 22:25:14,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 12434 backedges. 1925 proven. 5322 refuted. 0 times theorem prover too weak. 5187 trivial. 0 not checked. [2025-01-09 22:25:15,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:17,170 INFO L134 CoverageAnalysis]: Checked inductivity of 12434 backedges. 0 proven. 7247 refuted. 0 times theorem prover too weak. 5187 trivial. 0 not checked. [2025-01-09 22:25:17,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195333244] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:17,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:17,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 19, 19] total 62 [2025-01-09 22:25:17,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782695845] [2025-01-09 22:25:17,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:17,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-01-09 22:25:17,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:17,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-01-09 22:25:17,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=3123, Unknown=0, NotChecked=0, Total=3906 [2025-01-09 22:25:17,173 INFO L87 Difference]: Start difference. First operand 355 states and 368 transitions. Second operand has 63 states, 62 states have (on average 3.564516129032258) internal successors, (221), 63 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:23,175 INFO L93 Difference]: Finished difference Result 640 states and 692 transitions. [2025-01-09 22:25:23,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2025-01-09 22:25:23,176 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.564516129032258) internal successors, (221), 63 states have internal predecessors, (221), 0 states have call successors, (0), 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 354 [2025-01-09 22:25:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:23,177 INFO L225 Difference]: With dead ends: 640 [2025-01-09 22:25:23,177 INFO L226 Difference]: Without dead ends: 640 [2025-01-09 22:25:23,179 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 671 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8314 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=6570, Invalid=18236, Unknown=0, NotChecked=0, Total=24806 [2025-01-09 22:25:23,180 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 740 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:23,180 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 30 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 22:25:23,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2025-01-09 22:25:23,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 546. [2025-01-09 22:25:23,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 1.0568807339449542) internal successors, (576), 545 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 576 transitions. [2025-01-09 22:25:23,189 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 576 transitions. Word has length 354 [2025-01-09 22:25:23,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:23,190 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 576 transitions. [2025-01-09 22:25:23,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.564516129032258) internal successors, (221), 63 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:23,190 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 576 transitions. [2025-01-09 22:25:23,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2025-01-09 22:25:23,193 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:23,193 INFO L218 NwaCegarLoop]: trace histogram [121, 120, 120, 120, 13, 12, 12, 12, 12, 1, 1, 1] [2025-01-09 22:25:23,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-01-09 22:25:23,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:23,394 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:23,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:23,394 INFO L85 PathProgramCache]: Analyzing trace with hash -841659806, now seen corresponding path program 13 times [2025-01-09 22:25:23,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:23,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189191995] [2025-01-09 22:25:23,394 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 22:25:23,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:23,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 545 statements into 1 equivalence classes. [2025-01-09 22:25:23,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 545 of 545 statements. [2025-01-09 22:25:23,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:23,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:25,218 INFO L134 CoverageAnalysis]: Checked inductivity of 30594 backedges. 20878 proven. 4556 refuted. 0 times theorem prover too weak. 5160 trivial. 0 not checked. [2025-01-09 22:25:25,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:25,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189191995] [2025-01-09 22:25:25,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189191995] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:25,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430879181] [2025-01-09 22:25:25,219 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 22:25:25,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:25,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:25,221 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:25,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-01-09 22:25:25,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 545 statements into 1 equivalence classes. [2025-01-09 22:25:25,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 545 of 545 statements. [2025-01-09 22:25:25,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:25,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:25,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 22:25:25,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 30594 backedges. 22452 proven. 3276 refuted. 0 times theorem prover too weak. 4866 trivial. 0 not checked. [2025-01-09 22:25:26,170 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:26,688 INFO L134 CoverageAnalysis]: Checked inductivity of 30594 backedges. 22452 proven. 3276 refuted. 0 times theorem prover too weak. 4866 trivial. 0 not checked. [2025-01-09 22:25:26,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430879181] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:26,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:26,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 25, 25] total 46 [2025-01-09 22:25:26,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284583052] [2025-01-09 22:25:26,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:26,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 22:25:26,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:26,690 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 22:25:26,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1668, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 22:25:26,690 INFO L87 Difference]: Start difference. First operand 546 states and 576 transitions. Second operand has 46 states, 46 states have (on average 5.239130434782608) internal successors, (241), 46 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:29,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:29,596 INFO L93 Difference]: Finished difference Result 553 states and 577 transitions. [2025-01-09 22:25:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2025-01-09 22:25:29,596 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.239130434782608) internal successors, (241), 46 states have internal predecessors, (241), 0 states have call successors, (0), 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 545 [2025-01-09 22:25:29,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:29,597 INFO L225 Difference]: With dead ends: 553 [2025-01-09 22:25:29,597 INFO L226 Difference]: Without dead ends: 553 [2025-01-09 22:25:29,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1207 GetRequests, 1052 SyntacticMatches, 21 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5563 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3617, Invalid=14743, Unknown=0, NotChecked=0, Total=18360 [2025-01-09 22:25:29,600 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 76 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 3541 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 3554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 3541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:29,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 62 Invalid, 3554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 3541 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-09 22:25:29,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2025-01-09 22:25:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 550. [2025-01-09 22:25:29,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 1.0455373406193078) internal successors, (574), 549 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 574 transitions. [2025-01-09 22:25:29,606 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 574 transitions. Word has length 545 [2025-01-09 22:25:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:29,607 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 574 transitions. [2025-01-09 22:25:29,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.239130434782608) internal successors, (241), 46 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:29,607 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 574 transitions. [2025-01-09 22:25:29,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2025-01-09 22:25:29,610 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:29,610 INFO L218 NwaCegarLoop]: trace histogram [122, 121, 121, 121, 13, 12, 12, 12, 12, 1, 1, 1] [2025-01-09 22:25:29,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-01-09 22:25:29,810 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-01-09 22:25:29,811 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:29,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:29,811 INFO L85 PathProgramCache]: Analyzing trace with hash 878493383, now seen corresponding path program 14 times [2025-01-09 22:25:29,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:29,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805947793] [2025-01-09 22:25:29,811 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:25:29,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:29,853 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 549 statements into 2 equivalence classes. [2025-01-09 22:25:29,933 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 549 of 549 statements. [2025-01-09 22:25:29,934 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:25:29,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 31088 backedges. 17193 proven. 4690 refuted. 0 times theorem prover too weak. 9205 trivial. 0 not checked. [2025-01-09 22:25:33,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:33,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805947793] [2025-01-09 22:25:33,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805947793] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:33,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743988570] [2025-01-09 22:25:33,295 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:25:33,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:33,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:33,297 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:33,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-01-09 22:25:33,524 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 549 statements into 2 equivalence classes. [2025-01-09 22:25:33,710 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 549 of 549 statements. [2025-01-09 22:25:33,711 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:25:33,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:33,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-01-09 22:25:33,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 31088 backedges. 12094 proven. 15851 refuted. 0 times theorem prover too weak. 3143 trivial. 0 not checked. [2025-01-09 22:25:34,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:35,650 INFO L134 CoverageAnalysis]: Checked inductivity of 31088 backedges. 12094 proven. 15851 refuted. 0 times theorem prover too weak. 3143 trivial. 0 not checked. [2025-01-09 22:25:35,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743988570] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:35,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:35,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 28, 28] total 95 [2025-01-09 22:25:35,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617781807] [2025-01-09 22:25:35,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:35,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2025-01-09 22:25:35,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:35,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2025-01-09 22:25:35,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1212, Invalid=7718, Unknown=0, NotChecked=0, Total=8930 [2025-01-09 22:25:35,653 INFO L87 Difference]: Start difference. First operand 550 states and 574 transitions. Second operand has 95 states, 95 states have (on average 4.621052631578947) internal successors, (439), 95 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:38,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:38,204 INFO L93 Difference]: Finished difference Result 610 states and 633 transitions. [2025-01-09 22:25:38,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2025-01-09 22:25:38,204 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 4.621052631578947) internal successors, (439), 95 states have internal predecessors, (439), 0 states have call successors, (0), 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 549 [2025-01-09 22:25:38,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:38,206 INFO L225 Difference]: With dead ends: 610 [2025-01-09 22:25:38,206 INFO L226 Difference]: Without dead ends: 610 [2025-01-09 22:25:38,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1262 GetRequests, 1050 SyntacticMatches, 17 SemanticMatches, 195 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13804 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=6052, Invalid=32560, Unknown=0, NotChecked=0, Total=38612 [2025-01-09 22:25:38,209 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 77 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:38,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 43 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 22:25:38,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2025-01-09 22:25:38,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 607. [2025-01-09 22:25:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 606 states have (on average 1.0396039603960396) internal successors, (630), 606 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 630 transitions. [2025-01-09 22:25:38,216 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 630 transitions. Word has length 549 [2025-01-09 22:25:38,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:38,217 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 630 transitions. [2025-01-09 22:25:38,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 4.621052631578947) internal successors, (439), 95 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:25:38,217 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 630 transitions. [2025-01-09 22:25:38,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2025-01-09 22:25:38,236 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:38,236 INFO L218 NwaCegarLoop]: trace histogram [135, 134, 134, 134, 14, 13, 13, 13, 13, 1, 1, 1] [2025-01-09 22:25:38,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-01-09 22:25:38,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-01-09 22:25:38,437 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:38,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:38,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1619983901, now seen corresponding path program 15 times [2025-01-09 22:25:38,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:38,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337395656] [2025-01-09 22:25:38,438 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:25:38,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:38,481 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 606 statements into 48 equivalence classes. [2025-01-09 22:25:38,854 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) and asserted 359 of 606 statements. [2025-01-09 22:25:38,854 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2025-01-09 22:25:38,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 38070 backedges. 0 proven. 11347 refuted. 0 times theorem prover too weak. 26723 trivial. 0 not checked. [2025-01-09 22:25:39,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:39,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337395656] [2025-01-09 22:25:39,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337395656] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:39,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910490782] [2025-01-09 22:25:39,975 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:25:39,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:39,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:39,977 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 22:25:39,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-01-09 22:25:40,233 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 606 statements into 48 equivalence classes. [2025-01-09 22:25:40,982 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) and asserted 359 of 606 statements. [2025-01-09 22:25:40,982 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2025-01-09 22:25:40,982 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:40,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-01-09 22:25:40,994 INFO L279 TraceCheckSpWp]: Computing forward predicates...