./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-read.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_-read.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 9aaf3ef5b6218ff6658a67703b1e3ffb0d16a40e5e7c9a13354b853d6f63747b --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:24:20,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:24:20,565 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-09 22:24:20,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:24:20,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:24:20,580 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:24:20,581 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:24:20,581 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:24:20,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:24:20,581 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:24:20,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:24:20,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:24:20,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:24:20,581 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:24:20,581 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:24:20,581 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:24:20,581 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:24:20,581 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:24:20,582 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:24:20,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:24:20,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:24:20,583 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:24:20,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:24:20,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 22:24:20,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 22:24:20,583 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:24:20,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:24:20,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:24:20,583 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:24:20,583 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 -> 9aaf3ef5b6218ff6658a67703b1e3ffb0d16a40e5e7c9a13354b853d6f63747b [2025-01-09 22:24:20,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:24:20,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:24:20,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:24:20,830 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:24:20,830 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:24:20,831 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-read.c [2025-01-09 22:24:22,097 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/109fc73ec/521ed98abd974cb3a529331c05edb9c5/FLAG04e6e99fc [2025-01-09 22:24:22,394 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:24:22,394 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-read.c [2025-01-09 22:24:22,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/109fc73ec/521ed98abd974cb3a529331c05edb9c5/FLAG04e6e99fc [2025-01-09 22:24:22,417 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/109fc73ec/521ed98abd974cb3a529331c05edb9c5 [2025-01-09 22:24:22,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:24:22,420 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:24:22,422 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:24:22,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:24:22,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:24:22,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47aadb10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22, skipping insertion in model container [2025-01-09 22:24:22,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,435 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:24:22,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:24:22,547 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 22:24:22,558 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:24:22,569 INFO L204 MainTranslator]: Completed translation [2025-01-09 22:24:22,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22 WrapperNode [2025-01-09 22:24:22,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:24:22,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 22:24:22,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 22:24:22,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 22:24:22,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,583 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,595 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2025-01-09 22:24:22,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 22:24:22,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 22:24:22,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 22:24:22,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 22:24:22,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,604 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,617 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 22:24:22,618 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,622 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,634 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 22:24:22,635 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 22:24:22,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 22:24:22,638 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 22:24:22,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (1/1) ... [2025-01-09 22:24:22,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:24:22,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:22,664 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 22:24:22,667 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 22:24:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 22:24:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 22:24:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 22:24:22,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 22:24:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 22:24:22,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 22:24:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 22:24:22,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 22:24:22,730 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 22:24:22,731 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 22:24:22,831 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-01-09 22:24:22,831 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 22:24:22,837 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 22:24:22,837 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 22:24:22,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:24:22 BoogieIcfgContainer [2025-01-09 22:24:22,838 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 22:24:22,839 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 22:24:22,839 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 22:24:22,843 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 22:24:22,843 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:24:22" (1/3) ... [2025-01-09 22:24:22,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0ebf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:24:22, skipping insertion in model container [2025-01-09 22:24:22,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:24:22" (2/3) ... [2025-01-09 22:24:22,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0ebf7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:24:22, skipping insertion in model container [2025-01-09 22:24:22,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:24:22" (3/3) ... [2025-01-09 22:24:22,845 INFO L128 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_-read.c [2025-01-09 22:24:22,856 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 22:24:22,861 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ArraysWithLenghtAtDeclaration_-read.c that has 1 procedures, 25 locations, 1 initial locations, 3 loop locations, and 8 error locations. [2025-01-09 22:24:22,893 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 22:24:22,907 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;@1c52104c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 22:24:22,908 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-01-09 22:24:22,913 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 22:24:22,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-09 22:24:22,917 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:22,921 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-09 22:24:22,921 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 22:24:22,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:22,929 INFO L85 PathProgramCache]: Analyzing trace with hash 28694820, now seen corresponding path program 1 times [2025-01-09 22:24:22,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:22,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952389877] [2025-01-09 22:24:22,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:22,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:23,040 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-09 22:24:23,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-09 22:24:23,076 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:23,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:23,199 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 22:24:23,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:23,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952389877] [2025-01-09 22:24:23,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952389877] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:23,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:23,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 22:24:23,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827995870] [2025-01-09 22:24:23,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:23,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 22:24:23,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:23,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 22:24:23,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:24:23,233 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 22:24:23,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:23,275 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2025-01-09 22:24:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:24:23,277 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 22:24:23,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:23,280 INFO L225 Difference]: With dead ends: 30 [2025-01-09 22:24:23,280 INFO L226 Difference]: Without dead ends: 28 [2025-01-09 22:24:23,282 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 22:24:23,283 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 22:24:23,284 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 22:24:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-09 22:24:23,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2025-01-09 22:24:23,301 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 22:24:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2025-01-09 22:24:23,304 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 5 [2025-01-09 22:24:23,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:23,304 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2025-01-09 22:24:23,304 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 22:24:23,304 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2025-01-09 22:24:23,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-09 22:24:23,304 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:23,305 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-09 22:24:23,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 22:24:23,306 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 22:24:23,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:23,307 INFO L85 PathProgramCache]: Analyzing trace with hash 28715065, now seen corresponding path program 1 times [2025-01-09 22:24:23,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:23,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957066701] [2025-01-09 22:24:23,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:23,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:23,315 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-09 22:24:23,324 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-09 22:24:23,327 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:23,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:23,396 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 22:24:23,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:23,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957066701] [2025-01-09 22:24:23,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957066701] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:23,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:23,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:24:23,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705456860] [2025-01-09 22:24:23,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:23,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 22:24:23,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:23,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 22:24:23,400 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:24:23,400 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 22:24:23,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:23,428 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2025-01-09 22:24:23,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:24:23,429 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 22:24:23,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:23,429 INFO L225 Difference]: With dead ends: 43 [2025-01-09 22:24:23,429 INFO L226 Difference]: Without dead ends: 43 [2025-01-09 22:24:23,429 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 22:24:23,430 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 22:24:23,430 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 22:24:23,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-01-09 22:24:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2025-01-09 22:24:23,432 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 22:24:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-01-09 22:24:23,433 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 5 [2025-01-09 22:24:23,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:23,433 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-01-09 22:24:23,433 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 22:24:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-01-09 22:24:23,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 22:24:23,434 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:23,434 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 22:24:23,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 22:24:23,434 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 22:24:23,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:23,434 INFO L85 PathProgramCache]: Analyzing trace with hash 889547409, now seen corresponding path program 1 times [2025-01-09 22:24:23,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:23,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689704744] [2025-01-09 22:24:23,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:23,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:23,440 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 22:24:23,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 22:24:23,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:23,444 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:23,496 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 22:24:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:23,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689704744] [2025-01-09 22:24:23,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689704744] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:23,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:23,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-01-09 22:24:23,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912935611] [2025-01-09 22:24:23,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:23,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:23,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:23,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:23,498 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 22:24:23,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:23,562 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2025-01-09 22:24:23,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:24:23,563 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 22:24:23,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:23,563 INFO L225 Difference]: With dead ends: 46 [2025-01-09 22:24:23,563 INFO L226 Difference]: Without dead ends: 46 [2025-01-09 22:24:23,563 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 22:24:23,564 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 22:24:23,564 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 22:24:23,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-01-09 22:24:23,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2025-01-09 22:24:23,566 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 22:24:23,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2025-01-09 22:24:23,567 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2025-01-09 22:24:23,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:23,567 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2025-01-09 22:24:23,567 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 22:24:23,567 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2025-01-09 22:24:23,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 22:24:23,567 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:23,567 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 22:24:23,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 22:24:23,568 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 22:24:23,568 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:23,568 INFO L85 PathProgramCache]: Analyzing trace with hash 889539465, now seen corresponding path program 1 times [2025-01-09 22:24:23,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:23,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847250317] [2025-01-09 22:24:23,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:23,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:23,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 22:24:23,580 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 22:24:23,581 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:23,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:23,623 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 22:24:23,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:23,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847250317] [2025-01-09 22:24:23,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847250317] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:23,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:23,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:24:23,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56363184] [2025-01-09 22:24:23,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:23,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:23,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:23,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:23,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:23,624 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 22:24:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:23,663 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2025-01-09 22:24:23,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:24:23,664 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 22:24:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:23,664 INFO L225 Difference]: With dead ends: 27 [2025-01-09 22:24:23,664 INFO L226 Difference]: Without dead ends: 27 [2025-01-09 22:24:23,664 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 22:24:23,665 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 22:24:23,665 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 22:24:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-01-09 22:24:23,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-01-09 22:24:23,667 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 22:24:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-01-09 22:24:23,667 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 6 [2025-01-09 22:24:23,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:23,668 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-01-09 22:24:23,668 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 22:24:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-01-09 22:24:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-01-09 22:24:23,668 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:23,668 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-01-09 22:24:23,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 22:24:23,668 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 22:24:23,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:23,669 INFO L85 PathProgramCache]: Analyzing trace with hash 889539466, now seen corresponding path program 1 times [2025-01-09 22:24:23,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:23,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678796068] [2025-01-09 22:24:23,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:23,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:23,673 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-01-09 22:24:23,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-01-09 22:24:23,679 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:23,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:23,821 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 22:24:23,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:23,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678796068] [2025-01-09 22:24:23,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678796068] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:23,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:23,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:24:23,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558504968] [2025-01-09 22:24:23,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:23,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:23,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:23,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:23,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:23,823 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 22:24:23,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:23,881 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2025-01-09 22:24:23,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:24:23,881 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 22:24:23,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:23,881 INFO L225 Difference]: With dead ends: 29 [2025-01-09 22:24:23,882 INFO L226 Difference]: Without dead ends: 29 [2025-01-09 22:24:23,882 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 22:24:23,882 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 22:24:23,882 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 22:24:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-01-09 22:24:23,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2025-01-09 22:24:23,884 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 22:24:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2025-01-09 22:24:23,884 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2025-01-09 22:24:23,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:23,884 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2025-01-09 22:24:23,884 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 22:24:23,884 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2025-01-09 22:24:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-09 22:24:23,885 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:23,885 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:23,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 22:24:23,885 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 22:24:23,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash 321971401, now seen corresponding path program 1 times [2025-01-09 22:24:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:23,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445220167] [2025-01-09 22:24:23,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:23,890 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 22:24:23,893 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 22:24:23,893 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:23,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:23,939 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 22:24:23,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:23,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445220167] [2025-01-09 22:24:23,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445220167] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:23,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548697940] [2025-01-09 22:24:23,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:23,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:23,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:23,947 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 22:24:23,948 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 22:24:23,976 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-09 22:24:23,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-09 22:24:23,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:23,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:23,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 22:24:23,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:24,015 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 22:24:24,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:24,052 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 22:24:24,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548697940] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:24,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:24,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-01-09 22:24:24,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040090783] [2025-01-09 22:24:24,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:24,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:24:24,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:24,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:24:24,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-01-09 22:24:24,053 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 22:24:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:24,117 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2025-01-09 22:24:24,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:24:24,118 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 22:24:24,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:24,119 INFO L225 Difference]: With dead ends: 39 [2025-01-09 22:24:24,119 INFO L226 Difference]: Without dead ends: 39 [2025-01-09 22:24:24,119 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 22:24:24,119 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 22:24:24,120 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 22:24:24,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-01-09 22:24:24,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-01-09 22:24:24,124 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 22:24:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2025-01-09 22:24:24,124 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 9 [2025-01-09 22:24:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:24,124 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2025-01-09 22:24:24,125 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 22:24:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2025-01-09 22:24:24,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 22:24:24,125 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:24,125 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:24,133 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 22:24:24,325 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 22:24:24,325 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 22:24:24,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:24,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1391186828, now seen corresponding path program 1 times [2025-01-09 22:24:24,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:24,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940487491] [2025-01-09 22:24:24,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:24,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:24,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 22:24:24,336 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 22:24:24,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:24,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:24,375 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 22:24:24,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940487491] [2025-01-09 22:24:24,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940487491] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:24,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704435536] [2025-01-09 22:24:24,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:24,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:24,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:24,382 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 22:24:24,383 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 22:24:24,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 22:24:24,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 22:24:24,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:24,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:24,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 22:24:24,416 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:24,463 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 22:24:24,464 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:24,493 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 22:24:24,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704435536] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:24,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:24,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-01-09 22:24:24,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957523070] [2025-01-09 22:24:24,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:24,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 22:24:24,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:24,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 22:24:24,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-01-09 22:24:24,494 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 22:24:24,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:24,606 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2025-01-09 22:24:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 22:24:24,606 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 22:24:24,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:24,607 INFO L225 Difference]: With dead ends: 65 [2025-01-09 22:24:24,607 INFO L226 Difference]: Without dead ends: 65 [2025-01-09 22:24:24,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2025-01-09 22:24:24,607 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 79 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:24,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 39 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:24,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-01-09 22:24:24,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 38. [2025-01-09 22:24:24,609 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 22:24:24,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2025-01-09 22:24:24,610 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 10 [2025-01-09 22:24:24,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:24,610 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2025-01-09 22:24:24,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 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 22:24:24,610 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2025-01-09 22:24:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-01-09 22:24:24,610 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:24,610 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:24,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:24,814 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 22:24:24,814 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 22:24:24,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:24,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1391178885, now seen corresponding path program 1 times [2025-01-09 22:24:24,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:24,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142281428] [2025-01-09 22:24:24,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:24,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:24,840 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 22:24:24,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 22:24:24,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:24,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:24,913 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 22:24:24,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:24,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142281428] [2025-01-09 22:24:24,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142281428] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:24,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010049883] [2025-01-09 22:24:24,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:24,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:24,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:24,918 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 22:24:24,919 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 22:24:24,942 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-01-09 22:24:24,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-01-09 22:24:24,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:24,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:24,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 22:24:24,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:24,972 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 22:24:25,032 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 22:24:25,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:25,099 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 22:24:25,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010049883] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:25,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:25,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-01-09 22:24:25,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219885124] [2025-01-09 22:24:25,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:25,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-01-09 22:24:25,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:25,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-01-09 22:24:25,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-01-09 22:24:25,100 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 22:24:25,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:25,212 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2025-01-09 22:24:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:24:25,213 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 22:24:25,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:25,220 INFO L225 Difference]: With dead ends: 39 [2025-01-09 22:24:25,220 INFO L226 Difference]: Without dead ends: 39 [2025-01-09 22:24:25,220 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 22:24:25,221 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:25,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 72 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:25,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-01-09 22:24:25,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-01-09 22:24:25,222 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 22:24:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2025-01-09 22:24:25,223 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 10 [2025-01-09 22:24:25,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:25,223 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2025-01-09 22:24:25,223 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 22:24:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2025-01-09 22:24:25,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 22:24:25,223 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:25,223 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:25,231 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 22:24:25,423 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 22:24:25,424 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 22:24:25,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:25,424 INFO L85 PathProgramCache]: Analyzing trace with hash -718321913, now seen corresponding path program 2 times [2025-01-09 22:24:25,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:25,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818866977] [2025-01-09 22:24:25,424 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:25,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:25,430 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-01-09 22:24:25,432 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 14 statements. [2025-01-09 22:24:25,432 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 22:24:25,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:25,450 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 22:24:25,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:25,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818866977] [2025-01-09 22:24:25,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818866977] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:25,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:25,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 22:24:25,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865536602] [2025-01-09 22:24:25,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:25,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 22:24:25,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:25,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 22:24:25,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 22:24:25,451 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 22:24:25,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:25,462 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2025-01-09 22:24:25,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:24:25,462 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 22:24:25,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:25,462 INFO L225 Difference]: With dead ends: 37 [2025-01-09 22:24:25,462 INFO L226 Difference]: Without dead ends: 37 [2025-01-09 22:24:25,462 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 22:24:25,463 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 22:24:25,463 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 22:24:25,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-01-09 22:24:25,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-01-09 22:24:25,464 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 22:24:25,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2025-01-09 22:24:25,464 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 14 [2025-01-09 22:24:25,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:25,464 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2025-01-09 22:24:25,465 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 22:24:25,465 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2025-01-09 22:24:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-01-09 22:24:25,465 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:25,465 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:25,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-01-09 22:24:25,465 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 22:24:25,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:25,465 INFO L85 PathProgramCache]: Analyzing trace with hash -718321912, now seen corresponding path program 1 times [2025-01-09 22:24:25,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:25,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364829982] [2025-01-09 22:24:25,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:25,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:25,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-01-09 22:24:25,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-01-09 22:24:25,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:25,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:25,612 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 22:24:25,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:25,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364829982] [2025-01-09 22:24:25,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364829982] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:25,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:25,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:24:25,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520063186] [2025-01-09 22:24:25,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:25,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:25,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:25,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:25,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:25,613 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 22:24:25,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:25,650 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2025-01-09 22:24:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 22:24:25,655 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 22:24:25,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:25,655 INFO L225 Difference]: With dead ends: 61 [2025-01-09 22:24:25,655 INFO L226 Difference]: Without dead ends: 61 [2025-01-09 22:24:25,655 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 22:24:25,656 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 22:24:25,656 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 22:24:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-01-09 22:24:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2025-01-09 22:24:25,658 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 22:24:25,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2025-01-09 22:24:25,658 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 14 [2025-01-09 22:24:25,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:25,658 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2025-01-09 22:24:25,658 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 22:24:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2025-01-09 22:24:25,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-01-09 22:24:25,659 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:25,659 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:25,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-01-09 22:24:25,659 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 22:24:25,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:25,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1902927285, now seen corresponding path program 1 times [2025-01-09 22:24:25,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:25,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131120444] [2025-01-09 22:24:25,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:25,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:25,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 22:24:25,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 22:24:25,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:25,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:25,755 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 22:24:25,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:25,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131120444] [2025-01-09 22:24:25,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131120444] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:25,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886905519] [2025-01-09 22:24:25,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:25,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:25,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:25,757 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 22:24:25,759 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 22:24:25,788 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-01-09 22:24:25,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-01-09 22:24:25,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:25,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:25,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-09 22:24:25,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:25,862 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 22:24:25,863 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:25,890 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 22:24:25,943 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 22:24:25,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886905519] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:25,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:25,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-01-09 22:24:25,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643514431] [2025-01-09 22:24:25,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:25,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 22:24:25,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:25,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 22:24:25,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-01-09 22:24:25,945 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 22:24:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:26,005 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2025-01-09 22:24:26,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:24:26,005 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 22:24:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:26,005 INFO L225 Difference]: With dead ends: 63 [2025-01-09 22:24:26,005 INFO L226 Difference]: Without dead ends: 63 [2025-01-09 22:24:26,006 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 22:24:26,006 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:26,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 37 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:26,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-01-09 22:24:26,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2025-01-09 22:24:26,008 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 22:24:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2025-01-09 22:24:26,008 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 18 [2025-01-09 22:24:26,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:26,008 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2025-01-09 22:24:26,008 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 22:24:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2025-01-09 22:24:26,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 22:24:26,009 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:26,009 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 22:24:26,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:26,211 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 22:24:26,211 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 22:24:26,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash -833431295, now seen corresponding path program 1 times [2025-01-09 22:24:26,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:26,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276897026] [2025-01-09 22:24:26,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:26,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:26,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 22:24:26,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:26,223 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:26,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:26,258 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 22:24:26,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276897026] [2025-01-09 22:24:26,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276897026] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:26,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059103080] [2025-01-09 22:24:26,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:26,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [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 22:24:26,262 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 22:24:26,264 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 22:24:26,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 22:24:26,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:26,308 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:26,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:26,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 22:24:26,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:26,469 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#b~0#1.base_17| Int) (|v_ULTIMATE.start_main_~#mask~0#1.base_12| Int)) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_17| 1) |v_ULTIMATE.start_main_~#mask~0#1.base_12|) 0) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_17|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_17| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_12| 0)))) is different from true [2025-01-09 22:24:26,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 22:24:26,470 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:24:26,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059103080] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:26,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 22:24:26,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2025-01-09 22:24:26,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836601903] [2025-01-09 22:24:26,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:26,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:26,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:26,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:26,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2025-01-09 22:24:26,471 INFO L87 Difference]: Start difference. First operand 59 states and 69 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 22:24:26,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:26,489 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2025-01-09 22:24:26,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:24:26,489 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 21 [2025-01-09 22:24:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:26,489 INFO L225 Difference]: With dead ends: 60 [2025-01-09 22:24:26,489 INFO L226 Difference]: Without dead ends: 58 [2025-01-09 22:24:26,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2025-01-09 22:24:26,490 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:26,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2025-01-09 22:24:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-01-09 22:24:26,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-01-09 22:24:26,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 57 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:26,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2025-01-09 22:24:26,492 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 21 [2025-01-09 22:24:26,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:26,492 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2025-01-09 22:24:26,495 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 22:24:26,495 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2025-01-09 22:24:26,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 22:24:26,496 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:26,497 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 22:24:26,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-01-09 22:24:26,700 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 22:24:26,701 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:26,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash -833427327, now seen corresponding path program 1 times [2025-01-09 22:24:26,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:26,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665358130] [2025-01-09 22:24:26,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:26,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:26,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 22:24:26,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:26,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:26,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:26,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-01-09 22:24:26,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:26,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665358130] [2025-01-09 22:24:26,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665358130] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:26,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006611494] [2025-01-09 22:24:26,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:26,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:26,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:26,771 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 22:24:26,772 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 22:24:26,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-01-09 22:24:26,813 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:26,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:26,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:26,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 22:24:26,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:26,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 22:24:26,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2025-01-09 22:24:26,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:26,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:27,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 14 treesize of output 12 [2025-01-09 22:24:27,006 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 18 treesize of output 16 [2025-01-09 22:24:27,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:24:27,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006611494] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:27,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:27,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 11] total 21 [2025-01-09 22:24:27,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027624286] [2025-01-09 22:24:27,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:27,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-01-09 22:24:27,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:27,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-01-09 22:24:27,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2025-01-09 22:24:27,116 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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 22:24:27,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:27,297 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2025-01-09 22:24:27,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-09 22:24:27,297 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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 22:24:27,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:27,298 INFO L225 Difference]: With dead ends: 90 [2025-01-09 22:24:27,298 INFO L226 Difference]: Without dead ends: 90 [2025-01-09 22:24:27,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2025-01-09 22:24:27,299 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 35 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:27,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 92 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:24:27,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-01-09 22:24:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 62. [2025-01-09 22:24:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 61 states have internal predecessors, (71), 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 22:24:27,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2025-01-09 22:24:27,301 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 21 [2025-01-09 22:24:27,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:27,302 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2025-01-09 22:24:27,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 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 22:24:27,302 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2025-01-09 22:24:27,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-01-09 22:24:27,302 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:27,302 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1] [2025-01-09 22:24:27,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:27,502 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 22:24:27,503 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:27,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash -2024478536, now seen corresponding path program 2 times [2025-01-09 22:24:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:27,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235252384] [2025-01-09 22:24:27,503 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:27,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:27,509 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 22:24:27,515 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:27,515 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:27,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:27,599 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 22:24:27,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235252384] [2025-01-09 22:24:27,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235252384] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604119452] [2025-01-09 22:24:27,599 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:27,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:27,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:27,605 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 22:24:27,606 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 22:24:27,637 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-01-09 22:24:27,647 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-01-09 22:24:27,647 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:27,647 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:27,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-01-09 22:24:27,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:27,696 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 22:24:27,697 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:24:27,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604119452] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:27,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 22:24:27,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2025-01-09 22:24:27,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084467673] [2025-01-09 22:24:27,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:27,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:24:27,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:27,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:24:27,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-01-09 22:24:27,698 INFO L87 Difference]: Start difference. First operand 62 states and 71 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 22:24:27,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:27,749 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2025-01-09 22:24:27,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:24:27,750 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 22:24:27,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:27,750 INFO L225 Difference]: With dead ends: 52 [2025-01-09 22:24:27,750 INFO L226 Difference]: Without dead ends: 52 [2025-01-09 22:24:27,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2025-01-09 22:24:27,750 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:27,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 27 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-01-09 22:24:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-01-09 22:24:27,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 51 states have internal predecessors, (56), 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 22:24:27,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2025-01-09 22:24:27,752 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 21 [2025-01-09 22:24:27,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:27,752 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2025-01-09 22:24:27,752 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 22:24:27,753 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2025-01-09 22:24:27,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-01-09 22:24:27,753 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:27,753 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-09 22:24:27,762 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 22:24:27,957 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 22:24:27,957 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 22:24:27,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:27,958 INFO L85 PathProgramCache]: Analyzing trace with hash 400899735, now seen corresponding path program 1 times [2025-01-09 22:24:27,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:27,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972697937] [2025-01-09 22:24:27,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:27,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:27,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 22:24:27,976 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 22:24:27,976 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:27,976 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:28,059 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 22:24:28,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:28,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972697937] [2025-01-09 22:24:28,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972697937] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:28,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529593733] [2025-01-09 22:24:28,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:28,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:28,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:28,062 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 22:24:28,063 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 22:24:28,097 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-01-09 22:24:28,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-01-09 22:24:28,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:28,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:28,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 22:24:28,112 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:28,177 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 22:24:28,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:28,239 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 22:24:28,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529593733] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:28,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:28,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-01-09 22:24:28,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258389043] [2025-01-09 22:24:28,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:28,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-01-09 22:24:28,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:28,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-01-09 22:24:28,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-01-09 22:24:28,241 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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 22:24:28,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:28,386 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2025-01-09 22:24:28,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-01-09 22:24:28,387 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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 22:24:28,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:28,387 INFO L225 Difference]: With dead ends: 52 [2025-01-09 22:24:28,387 INFO L226 Difference]: Without dead ends: 52 [2025-01-09 22:24:28,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2025-01-09 22:24:28,388 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 35 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:28,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 26 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:28,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-01-09 22:24:28,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-01-09 22:24:28,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 51 states have internal predecessors, (55), 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 22:24:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2025-01-09 22:24:28,390 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 27 [2025-01-09 22:24:28,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:28,391 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2025-01-09 22:24:28,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 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 22:24:28,391 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2025-01-09 22:24:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-01-09 22:24:28,391 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:28,391 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1] [2025-01-09 22:24:28,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:28,596 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 22:24:28,596 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:28,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:28,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1510481170, now seen corresponding path program 2 times [2025-01-09 22:24:28,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:28,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117997354] [2025-01-09 22:24:28,601 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:28,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:28,611 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-09 22:24:28,624 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 22:24:28,625 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:28,625 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:28,736 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 22:24:28,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117997354] [2025-01-09 22:24:28,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117997354] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:28,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985214449] [2025-01-09 22:24:28,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:28,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:28,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:28,740 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 22:24:28,762 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 22:24:28,806 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-01-09 22:24:28,822 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-01-09 22:24:28,822 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:28,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:28,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-01-09 22:24:28,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:28,836 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 22:24:28,842 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 22:24:28,994 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 22:24:28,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:29,150 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 22:24:29,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985214449] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:29,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:29,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 3] total 7 [2025-01-09 22:24:29,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609527436] [2025-01-09 22:24:29,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:29,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-01-09 22:24:29,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:29,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-01-09 22:24:29,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-01-09 22:24:29,154 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 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 22:24:29,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:29,206 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2025-01-09 22:24:29,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:24:29,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 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 31 [2025-01-09 22:24:29,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:29,207 INFO L225 Difference]: With dead ends: 125 [2025-01-09 22:24:29,208 INFO L226 Difference]: Without dead ends: 125 [2025-01-09 22:24:29,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2025-01-09 22:24:29,209 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 24 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:29,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 47 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:29,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-01-09 22:24:29,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2025-01-09 22:24:29,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.1929824561403508) internal successors, (136), 118 states have internal predecessors, (136), 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 22:24:29,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 136 transitions. [2025-01-09 22:24:29,216 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 136 transitions. Word has length 31 [2025-01-09 22:24:29,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:29,216 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 136 transitions. [2025-01-09 22:24:29,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 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 22:24:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 136 transitions. [2025-01-09 22:24:29,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-01-09 22:24:29,220 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:29,220 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:29,227 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 22:24:29,420 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 22:24:29,421 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 22:24:29,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:29,421 INFO L85 PathProgramCache]: Analyzing trace with hash 135471689, now seen corresponding path program 1 times [2025-01-09 22:24:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:29,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274426514] [2025-01-09 22:24:29,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:29,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:29,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 22:24:29,441 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 22:24:29,444 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:29,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:29,656 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 22:24:29,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:29,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274426514] [2025-01-09 22:24:29,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274426514] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:29,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352018950] [2025-01-09 22:24:29,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:29,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:29,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:29,661 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 22:24:29,663 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 22:24:29,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-01-09 22:24:29,712 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-01-09 22:24:29,712 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:29,712 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:29,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 22:24:29,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:29,806 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 22:24:29,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:29,862 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 22:24:29,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352018950] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:29,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:29,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2025-01-09 22:24:29,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872310653] [2025-01-09 22:24:29,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:29,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 22:24:29,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:29,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 22:24:29,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-01-09 22:24:29,863 INFO L87 Difference]: Start difference. First operand 119 states and 136 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 22:24:29,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:29,996 INFO L93 Difference]: Finished difference Result 115 states and 129 transitions. [2025-01-09 22:24:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-01-09 22:24:29,996 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 22:24:29,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:29,997 INFO L225 Difference]: With dead ends: 115 [2025-01-09 22:24:29,997 INFO L226 Difference]: Without dead ends: 115 [2025-01-09 22:24:29,997 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 22:24:29,997 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:29,997 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 50 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:29,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-01-09 22:24:29,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2025-01-09 22:24:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.1666666666666667) internal successors, (126), 112 states have internal predecessors, (126), 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 22:24:29,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2025-01-09 22:24:30,000 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 34 [2025-01-09 22:24:30,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:30,000 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2025-01-09 22:24:30,000 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 22:24:30,000 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2025-01-09 22:24:30,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-01-09 22:24:30,000 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:30,000 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-01-09 22:24:30,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:30,200 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 22:24:30,201 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:30,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:30,201 INFO L85 PathProgramCache]: Analyzing trace with hash -255258184, now seen corresponding path program 1 times [2025-01-09 22:24:30,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:30,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348015223] [2025-01-09 22:24:30,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:30,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:30,206 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 22:24:30,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 22:24:30,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:30,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:30,260 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-01-09 22:24:30,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:30,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348015223] [2025-01-09 22:24:30,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348015223] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:30,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003806607] [2025-01-09 22:24:30,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:30,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:30,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:30,267 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 22:24:30,267 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 22:24:30,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-01-09 22:24:30,320 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-01-09 22:24:30,320 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:30,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:30,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-01-09 22:24:30,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 22:24:30,449 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:30,503 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 22:24:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-01-09 22:24:30,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003806607] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:30,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:30,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2025-01-09 22:24:30,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153090037] [2025-01-09 22:24:30,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:30,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-01-09 22:24:30,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:30,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-01-09 22:24:30,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-01-09 22:24:30,591 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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 22:24:30,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:30,693 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2025-01-09 22:24:30,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 22:24:30,694 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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 38 [2025-01-09 22:24:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:30,694 INFO L225 Difference]: With dead ends: 120 [2025-01-09 22:24:30,694 INFO L226 Difference]: Without dead ends: 120 [2025-01-09 22:24:30,694 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2025-01-09 22:24:30,695 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 138 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:30,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 64 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:30,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-01-09 22:24:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 116. [2025-01-09 22:24:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 111 states have (on average 1.1531531531531531) internal successors, (128), 115 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 22:24:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2025-01-09 22:24:30,697 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 38 [2025-01-09 22:24:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:30,697 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2025-01-09 22:24:30,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 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 22:24:30,697 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2025-01-09 22:24:30,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-01-09 22:24:30,697 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:30,698 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 3, 2, 2, 2, 2, 1, 1, 1] [2025-01-09 22:24:30,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-01-09 22:24:30,898 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 22:24:30,898 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:30,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash 203329363, now seen corresponding path program 2 times [2025-01-09 22:24:30,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:30,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977646515] [2025-01-09 22:24:30,899 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:30,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:30,905 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-01-09 22:24:30,915 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 22:24:30,915 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:30,915 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:31,051 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 22:24:31,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:31,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977646515] [2025-01-09 22:24:31,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977646515] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:31,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620473724] [2025-01-09 22:24:31,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:31,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:31,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:31,053 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 22:24:31,054 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 22:24:31,098 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-01-09 22:24:31,124 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-01-09 22:24:31,124 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:31,124 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:31,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-01-09 22:24:31,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:31,247 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 22:24:31,247 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:31,342 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 22:24:31,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620473724] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:31,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:31,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2025-01-09 22:24:31,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869056801] [2025-01-09 22:24:31,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:31,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 22:24:31,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:31,343 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 22:24:31,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2025-01-09 22:24:31,343 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 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 22:24:31,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:31,538 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2025-01-09 22:24:31,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-01-09 22:24:31,538 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 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 22:24:31,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:31,538 INFO L225 Difference]: With dead ends: 116 [2025-01-09 22:24:31,538 INFO L226 Difference]: Without dead ends: 116 [2025-01-09 22:24:31,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 88 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=589, Unknown=0, NotChecked=0, Total=812 [2025-01-09 22:24:31,539 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 24 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:31,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 40 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:31,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-01-09 22:24:31,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2025-01-09 22:24:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.128440366972477) internal successors, (123), 113 states have internal predecessors, (123), 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 22:24:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2025-01-09 22:24:31,543 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 51 [2025-01-09 22:24:31,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:31,543 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2025-01-09 22:24:31,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 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 22:24:31,543 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2025-01-09 22:24:31,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-01-09 22:24:31,544 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:31,544 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2025-01-09 22:24:31,553 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:31,751 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 22:24:31,751 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:31,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:31,751 INFO L85 PathProgramCache]: Analyzing trace with hash -819963861, now seen corresponding path program 2 times [2025-01-09 22:24:31,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:31,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544127131] [2025-01-09 22:24:31,751 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:31,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:31,760 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 58 statements into 2 equivalence classes. [2025-01-09 22:24:31,773 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 22:24:31,773 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:31,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 23 proven. 110 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-09 22:24:31,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:31,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544127131] [2025-01-09 22:24:31,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544127131] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:31,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503081937] [2025-01-09 22:24:31,887 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:31,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:31,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:31,889 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 22:24:31,890 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 22:24:31,931 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 58 statements into 2 equivalence classes. [2025-01-09 22:24:31,953 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-01-09 22:24:31,953 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:31,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:31,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 22:24:31,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 45 proven. 88 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-09 22:24:32,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:32,154 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 45 proven. 88 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-01-09 22:24:32,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503081937] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:32,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:32,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2025-01-09 22:24:32,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50494225] [2025-01-09 22:24:32,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:32,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 22:24:32,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:32,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 22:24:32,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2025-01-09 22:24:32,156 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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 22:24:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:32,359 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2025-01-09 22:24:32,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-01-09 22:24:32,360 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-01-09 22:24:32,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:32,360 INFO L225 Difference]: With dead ends: 116 [2025-01-09 22:24:32,360 INFO L226 Difference]: Without dead ends: 116 [2025-01-09 22:24:32,361 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 104 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=520, Unknown=0, NotChecked=0, Total=702 [2025-01-09 22:24:32,361 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 45 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:32,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 30 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:32,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2025-01-09 22:24:32,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2025-01-09 22:24:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 109 states have (on average 1.1009174311926606) internal successors, (120), 113 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 120 transitions. [2025-01-09 22:24:32,363 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 120 transitions. Word has length 58 [2025-01-09 22:24:32,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:32,363 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 120 transitions. [2025-01-09 22:24:32,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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 22:24:32,363 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 120 transitions. [2025-01-09 22:24:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-01-09 22:24:32,364 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:32,364 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2025-01-09 22:24:32,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:32,564 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 22:24:32,564 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:32,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1329985638, now seen corresponding path program 3 times [2025-01-09 22:24:32,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:32,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134693740] [2025-01-09 22:24:32,565 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:32,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:32,572 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 11 equivalence classes. [2025-01-09 22:24:32,576 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 62 statements. [2025-01-09 22:24:32,576 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 22:24:32,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:32,657 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2025-01-09 22:24:32,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:32,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134693740] [2025-01-09 22:24:32,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134693740] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:32,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:32,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 22:24:32,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004944885] [2025-01-09 22:24:32,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:32,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:24:32,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:32,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:24:32,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:24:32,658 INFO L87 Difference]: Start difference. First operand 114 states and 120 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 22:24:32,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:32,686 INFO L93 Difference]: Finished difference Result 112 states and 118 transitions. [2025-01-09 22:24:32,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 22:24:32,687 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 62 [2025-01-09 22:24:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:32,687 INFO L225 Difference]: With dead ends: 112 [2025-01-09 22:24:32,687 INFO L226 Difference]: Without dead ends: 112 [2025-01-09 22:24:32,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:24:32,688 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:32,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 30 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:32,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-01-09 22:24:32,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 87. [2025-01-09 22:24:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 86 states have internal predecessors, (89), 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 22:24:32,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2025-01-09 22:24:32,689 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 62 [2025-01-09 22:24:32,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:32,689 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2025-01-09 22:24:32,689 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 22:24:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2025-01-09 22:24:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-01-09 22:24:32,690 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:32,690 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2025-01-09 22:24:32,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-01-09 22:24:32,690 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:32,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:32,690 INFO L85 PathProgramCache]: Analyzing trace with hash 528816262, now seen corresponding path program 2 times [2025-01-09 22:24:32,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:32,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201428654] [2025-01-09 22:24:32,690 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:32,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:32,697 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-01-09 22:24:32,698 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 65 statements. [2025-01-09 22:24:32,698 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-01-09 22:24:32,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:32,732 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2025-01-09 22:24:32,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:32,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201428654] [2025-01-09 22:24:32,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201428654] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:24:32,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:24:32,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 22:24:32,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202525678] [2025-01-09 22:24:32,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:24:32,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-01-09 22:24:32,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:32,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-01-09 22:24:32,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-01-09 22:24:32,733 INFO L87 Difference]: Start difference. First operand 87 states and 89 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 22:24:32,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:32,741 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2025-01-09 22:24:32,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-01-09 22:24:32,742 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 65 [2025-01-09 22:24:32,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:32,742 INFO L225 Difference]: With dead ends: 86 [2025-01-09 22:24:32,742 INFO L226 Difference]: Without dead ends: 75 [2025-01-09 22:24:32,742 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 22:24:32,743 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:32,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:32,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-01-09 22:24:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2025-01-09 22:24:32,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 74 states have internal predecessors, (76), 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 22:24:32,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2025-01-09 22:24:32,744 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 65 [2025-01-09 22:24:32,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:32,744 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2025-01-09 22:24:32,745 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 22:24:32,745 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2025-01-09 22:24:32,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-01-09 22:24:32,745 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:32,745 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 4, 3, 3, 3, 3, 1, 1, 1] [2025-01-09 22:24:32,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-01-09 22:24:32,745 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:32,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:32,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1598002684, now seen corresponding path program 3 times [2025-01-09 22:24:32,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:32,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903204416] [2025-01-09 22:24:32,745 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:32,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:32,775 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 72 statements into 11 equivalence classes. [2025-01-09 22:24:32,779 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 72 statements. [2025-01-09 22:24:32,779 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 22:24:32,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-01-09 22:24:32,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:32,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903204416] [2025-01-09 22:24:32,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903204416] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:32,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426142268] [2025-01-09 22:24:32,839 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:32,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:32,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:32,841 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 22:24:32,845 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 22:24:32,893 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 72 statements into 11 equivalence classes. [2025-01-09 22:24:32,909 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 72 statements. [2025-01-09 22:24:32,909 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-01-09 22:24:32,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:32,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 22:24:32,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:32,920 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 6 treesize of output 5 [2025-01-09 22:24:32,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:24:32,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2025-01-09 22:24:33,088 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-01-09 22:24:33,088 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:33,434 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-01-09 22:24:33,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426142268] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:33,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:33,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-01-09 22:24:33,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446416852] [2025-01-09 22:24:33,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:33,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-09 22:24:33,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:33,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-09 22:24:33,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-01-09 22:24:33,436 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 13 states have internal predecessors, (58), 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 22:24:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:33,504 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2025-01-09 22:24:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:24:33,504 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 13 states have internal predecessors, (58), 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 72 [2025-01-09 22:24:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:33,504 INFO L225 Difference]: With dead ends: 74 [2025-01-09 22:24:33,504 INFO L226 Difference]: Without dead ends: 74 [2025-01-09 22:24:33,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2025-01-09 22:24:33,505 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:33,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 17 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:24:33,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-01-09 22:24:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2025-01-09 22:24:33,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 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 22:24:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2025-01-09 22:24:33,506 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 72 [2025-01-09 22:24:33,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:33,506 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2025-01-09 22:24:33,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 13 states have internal predecessors, (58), 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 22:24:33,506 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2025-01-09 22:24:33,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-01-09 22:24:33,507 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:33,507 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 4, 3, 3, 3, 3, 1, 1, 1] [2025-01-09 22:24:33,513 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 22:24:33,707 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,SelfDestructingSolverStorable22 [2025-01-09 22:24:33,707 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:33,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:33,708 INFO L85 PathProgramCache]: Analyzing trace with hash 2001524394, now seen corresponding path program 1 times [2025-01-09 22:24:33,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:33,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556819126] [2025-01-09 22:24:33,708 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:33,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:33,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-01-09 22:24:33,723 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-01-09 22:24:33,723 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:33,723 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-09 22:24:33,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:33,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556819126] [2025-01-09 22:24:33,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556819126] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:33,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236025372] [2025-01-09 22:24:33,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:24:33,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:33,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:33,980 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 22:24:33,980 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 22:24:34,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-01-09 22:24:34,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-01-09 22:24:34,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:34,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:34,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-09 22:24:34,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:34,069 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 22:24:34,274 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-09 22:24:34,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:34,510 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-01-09 22:24:34,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236025372] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:34,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:34,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-01-09 22:24:34,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439870457] [2025-01-09 22:24:34,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:34,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-01-09 22:24:34,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:34,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-01-09 22:24:34,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-01-09 22:24:34,511 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 18 states have internal predecessors, (77), 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 22:24:34,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:34,784 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2025-01-09 22:24:34,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-01-09 22:24:34,785 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 18 states have internal predecessors, (77), 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 22:24:34,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:34,785 INFO L225 Difference]: With dead ends: 98 [2025-01-09 22:24:34,785 INFO L226 Difference]: Without dead ends: 98 [2025-01-09 22:24:34,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2025-01-09 22:24:34,786 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:34,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 25 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:34,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-01-09 22:24:34,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2025-01-09 22:24:34,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0824742268041236) internal successors, (105), 97 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:24:34,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2025-01-09 22:24:34,788 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 73 [2025-01-09 22:24:34,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:34,788 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2025-01-09 22:24:34,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 18 states have internal predecessors, (77), 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 22:24:34,788 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2025-01-09 22:24:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-01-09 22:24:34,788 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:34,788 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 4, 3, 3, 3, 3, 1, 1, 1] [2025-01-09 22:24:34,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:34,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-01-09 22:24:34,993 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:34,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:34,993 INFO L85 PathProgramCache]: Analyzing trace with hash 396790284, now seen corresponding path program 2 times [2025-01-09 22:24:34,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:34,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923884735] [2025-01-09 22:24:34,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:34,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:35,008 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-01-09 22:24:35,022 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-01-09 22:24:35,022 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:35,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 191 proven. 579 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-01-09 22:24:35,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:35,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923884735] [2025-01-09 22:24:35,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923884735] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:35,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630368413] [2025-01-09 22:24:35,308 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:35,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:35,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:35,309 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 22:24:35,311 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 22:24:35,366 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-01-09 22:24:35,399 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-01-09 22:24:35,399 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:35,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:35,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-01-09 22:24:35,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:35,572 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 373 proven. 347 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-01-09 22:24:35,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 373 proven. 347 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-01-09 22:24:35,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630368413] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:35,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:35,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 25 [2025-01-09 22:24:35,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295948947] [2025-01-09 22:24:35,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:35,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 22:24:35,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:35,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 22:24:35,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2025-01-09 22:24:35,696 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 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 22:24:35,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:35,961 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2025-01-09 22:24:35,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-01-09 22:24:35,961 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 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 97 [2025-01-09 22:24:35,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:35,961 INFO L225 Difference]: With dead ends: 126 [2025-01-09 22:24:35,961 INFO L226 Difference]: Without dead ends: 126 [2025-01-09 22:24:35,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 177 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=416, Invalid=1390, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 22:24:35,963 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:35,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:35,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-01-09 22:24:35,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2025-01-09 22:24:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0737704918032787) internal successors, (131), 122 states have internal predecessors, (131), 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 22:24:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2025-01-09 22:24:35,964 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 97 [2025-01-09 22:24:35,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:35,966 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2025-01-09 22:24:35,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 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 22:24:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2025-01-09 22:24:35,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-01-09 22:24:35,966 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:35,966 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 5, 4, 4, 4, 4, 1, 1, 1] [2025-01-09 22:24:35,974 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 22:24:36,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:36,167 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 22:24:36,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:36,167 INFO L85 PathProgramCache]: Analyzing trace with hash -124823811, now seen corresponding path program 3 times [2025-01-09 22:24:36,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:36,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061349528] [2025-01-09 22:24:36,167 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:36,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:36,178 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 118 statements into 15 equivalence classes. [2025-01-09 22:24:36,210 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 76 of 118 statements. [2025-01-09 22:24:36,210 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-09 22:24:36,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 200 proven. 651 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2025-01-09 22:24:36,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:36,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061349528] [2025-01-09 22:24:36,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061349528] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:36,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595170953] [2025-01-09 22:24:36,522 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:36,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:36,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:36,525 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 22:24:36,525 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 22:24:36,638 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 118 statements into 15 equivalence classes. [2025-01-09 22:24:36,677 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 76 of 118 statements. [2025-01-09 22:24:36,678 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-01-09 22:24:36,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:36,679 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 22:24:36,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 259 proven. 708 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2025-01-09 22:24:37,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 78 proven. 889 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2025-01-09 22:24:37,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595170953] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:37,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:37,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 43 [2025-01-09 22:24:37,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843442702] [2025-01-09 22:24:37,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:37,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-01-09 22:24:37,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:37,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-01-09 22:24:37,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=1547, Unknown=0, NotChecked=0, Total=1806 [2025-01-09 22:24:37,322 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand has 43 states, 43 states have (on average 3.3488372093023258) internal successors, (144), 43 states have internal predecessors, (144), 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 22:24:37,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:37,786 INFO L93 Difference]: Finished difference Result 151 states and 160 transitions. [2025-01-09 22:24:37,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-01-09 22:24:37,787 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.3488372093023258) internal successors, (144), 43 states have internal predecessors, (144), 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 118 [2025-01-09 22:24:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:37,788 INFO L225 Difference]: With dead ends: 151 [2025-01-09 22:24:37,788 INFO L226 Difference]: Without dead ends: 151 [2025-01-09 22:24:37,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1181 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=650, Invalid=2656, Unknown=0, NotChecked=0, Total=3306 [2025-01-09 22:24:37,789 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 106 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:37,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 23 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:37,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-01-09 22:24:37,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 123. [2025-01-09 22:24:37,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0737704918032787) internal successors, (131), 122 states have internal predecessors, (131), 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 22:24:37,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2025-01-09 22:24:37,793 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 118 [2025-01-09 22:24:37,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:37,793 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2025-01-09 22:24:37,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.3488372093023258) internal successors, (144), 43 states have internal predecessors, (144), 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 22:24:37,794 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2025-01-09 22:24:37,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-01-09 22:24:37,794 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:37,794 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 5, 4, 4, 4, 4, 1, 1, 1] [2025-01-09 22:24:37,804 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 22:24:37,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:37,995 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:37,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:37,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1489348126, now seen corresponding path program 4 times [2025-01-09 22:24:37,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:37,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546207180] [2025-01-09 22:24:37,995 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 22:24:37,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:38,006 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 122 statements into 2 equivalence classes. [2025-01-09 22:24:38,028 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 122 of 122 statements. [2025-01-09 22:24:38,028 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 22:24:38,029 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:38,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 296 proven. 918 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-01-09 22:24:38,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:38,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546207180] [2025-01-09 22:24:38,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546207180] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:38,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231693613] [2025-01-09 22:24:38,401 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 22:24:38,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:38,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:38,403 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 22:24:38,405 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 22:24:38,473 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 122 statements into 2 equivalence classes. [2025-01-09 22:24:38,533 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 122 of 122 statements. [2025-01-09 22:24:38,533 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 22:24:38,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:38,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-01-09 22:24:38,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:38,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 238 proven. 978 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-01-09 22:24:38,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 238 proven. 978 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-01-09 22:24:39,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231693613] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:39,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:39,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 36 [2025-01-09 22:24:39,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622831850] [2025-01-09 22:24:39,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:39,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 22:24:39,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:39,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 22:24:39,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=900, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 22:24:39,118 INFO L87 Difference]: Start difference. First operand 123 states and 131 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 22:24:40,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:40,178 INFO L93 Difference]: Finished difference Result 464 states and 498 transitions. [2025-01-09 22:24:40,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-01-09 22:24:40,179 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 122 [2025-01-09 22:24:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:40,180 INFO L225 Difference]: With dead ends: 464 [2025-01-09 22:24:40,183 INFO L226 Difference]: Without dead ends: 464 [2025-01-09 22:24:40,186 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 217 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4041 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=2687, Invalid=7015, Unknown=0, NotChecked=0, Total=9702 [2025-01-09 22:24:40,186 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:40,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 22:24:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2025-01-09 22:24:40,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 413. [2025-01-09 22:24:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.0825242718446602) internal successors, (446), 412 states have internal predecessors, (446), 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 22:24:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 446 transitions. [2025-01-09 22:24:40,200 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 446 transitions. Word has length 122 [2025-01-09 22:24:40,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:40,200 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 446 transitions. [2025-01-09 22:24:40,200 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 22:24:40,200 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 446 transitions. [2025-01-09 22:24:40,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-01-09 22:24:40,201 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:40,201 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 44, 44, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:24:40,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:40,401 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,SelfDestructingSolverStorable26 [2025-01-09 22:24:40,401 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:40,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:40,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1163020463, now seen corresponding path program 5 times [2025-01-09 22:24:40,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:40,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077808019] [2025-01-09 22:24:40,402 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 22:24:40,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:40,424 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 227 statements into 27 equivalence classes. [2025-01-09 22:24:40,472 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 95 of 227 statements. [2025-01-09 22:24:40,472 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-01-09 22:24:40,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 2156 proven. 114 refuted. 0 times theorem prover too weak. 2240 trivial. 0 not checked. [2025-01-09 22:24:40,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:40,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077808019] [2025-01-09 22:24:40,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077808019] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:40,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706584501] [2025-01-09 22:24:40,680 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 22:24:40,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:40,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:40,682 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 22:24:40,684 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 22:24:40,768 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 227 statements into 27 equivalence classes. [2025-01-09 22:24:40,810 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 95 of 227 statements. [2025-01-09 22:24:40,810 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-01-09 22:24:40,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:40,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 22:24:40,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:40,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 2156 proven. 114 refuted. 0 times theorem prover too weak. 2240 trivial. 0 not checked. [2025-01-09 22:24:40,959 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:41,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 2169 proven. 101 refuted. 0 times theorem prover too weak. 2240 trivial. 0 not checked. [2025-01-09 22:24:41,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706584501] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:41,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:41,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2025-01-09 22:24:41,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19529305] [2025-01-09 22:24:41,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:41,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-01-09 22:24:41,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:41,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-01-09 22:24:41,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2025-01-09 22:24:41,140 INFO L87 Difference]: Start difference. First operand 413 states and 446 transitions. Second operand has 32 states, 32 states have (on average 4.0) internal successors, (128), 32 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 22:24:41,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:41,439 INFO L93 Difference]: Finished difference Result 308 states and 329 transitions. [2025-01-09 22:24:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-01-09 22:24:41,439 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.0) internal successors, (128), 32 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 227 [2025-01-09 22:24:41,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:41,440 INFO L225 Difference]: With dead ends: 308 [2025-01-09 22:24:41,440 INFO L226 Difference]: Without dead ends: 308 [2025-01-09 22:24:41,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 434 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=452, Invalid=1528, Unknown=0, NotChecked=0, Total=1980 [2025-01-09 22:24:41,441 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 45 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:41,441 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 31 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:24:41,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-01-09 22:24:41,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2025-01-09 22:24:41,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.0716612377850163) internal successors, (329), 307 states have internal predecessors, (329), 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 22:24:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 329 transitions. [2025-01-09 22:24:41,446 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 329 transitions. Word has length 227 [2025-01-09 22:24:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:41,446 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 329 transitions. [2025-01-09 22:24:41,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.0) internal successors, (128), 32 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 22:24:41,446 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 329 transitions. [2025-01-09 22:24:41,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2025-01-09 22:24:41,450 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:41,450 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 49, 49, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:24:41,460 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 22:24:41,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:41,650 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:41,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:41,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1668313012, now seen corresponding path program 6 times [2025-01-09 22:24:41,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:41,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548556795] [2025-01-09 22:24:41,651 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 22:24:41,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:41,669 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 247 statements into 28 equivalence classes. [2025-01-09 22:24:41,760 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 126 of 247 statements. [2025-01-09 22:24:41,760 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-01-09 22:24:41,760 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:42,181 INFO L134 CoverageAnalysis]: Checked inductivity of 5490 backedges. 814 proven. 1841 refuted. 0 times theorem prover too weak. 2835 trivial. 0 not checked. [2025-01-09 22:24:42,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548556795] [2025-01-09 22:24:42,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548556795] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:42,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545860518] [2025-01-09 22:24:42,181 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 22:24:42,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:42,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:42,186 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 22:24:42,187 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 22:24:42,286 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 247 statements into 28 equivalence classes. [2025-01-09 22:24:42,410 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 126 of 247 statements. [2025-01-09 22:24:42,410 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-01-09 22:24:42,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:42,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-01-09 22:24:42,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5490 backedges. 943 proven. 1847 refuted. 0 times theorem prover too weak. 2700 trivial. 0 not checked. [2025-01-09 22:24:42,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:43,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5490 backedges. 148 proven. 2642 refuted. 0 times theorem prover too weak. 2700 trivial. 0 not checked. [2025-01-09 22:24:43,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545860518] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:43,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:43,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 19] total 48 [2025-01-09 22:24:43,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110217311] [2025-01-09 22:24:43,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:43,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-01-09 22:24:43,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:43,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-01-09 22:24:43,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1935, Unknown=0, NotChecked=0, Total=2256 [2025-01-09 22:24:43,337 INFO L87 Difference]: Start difference. First operand 308 states and 329 transitions. Second operand has 48 states, 48 states have (on average 3.4166666666666665) internal successors, (164), 48 states have internal predecessors, (164), 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 22:24:43,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:43,812 INFO L93 Difference]: Finished difference Result 465 states and 491 transitions. [2025-01-09 22:24:43,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-01-09 22:24:43,813 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.4166666666666665) internal successors, (164), 48 states have internal predecessors, (164), 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 247 [2025-01-09 22:24:43,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:43,814 INFO L225 Difference]: With dead ends: 465 [2025-01-09 22:24:43,814 INFO L226 Difference]: Without dead ends: 465 [2025-01-09 22:24:43,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 459 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=805, Invalid=3355, Unknown=0, NotChecked=0, Total=4160 [2025-01-09 22:24:43,815 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 117 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:43,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 25 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:24:43,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2025-01-09 22:24:43,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 408. [2025-01-09 22:24:43,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.0638820638820639) internal successors, (433), 407 states have internal predecessors, (433), 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 22:24:43,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 433 transitions. [2025-01-09 22:24:43,821 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 433 transitions. Word has length 247 [2025-01-09 22:24:43,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:43,821 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 433 transitions. [2025-01-09 22:24:43,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.4166666666666665) internal successors, (164), 48 states have internal predecessors, (164), 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 22:24:43,821 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 433 transitions. [2025-01-09 22:24:43,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2025-01-09 22:24:43,826 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:43,827 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 50, 50, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:24:43,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-01-09 22:24:44,027 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,SelfDestructingSolverStorable28 [2025-01-09 22:24:44,027 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:44,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:44,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1926190001, now seen corresponding path program 7 times [2025-01-09 22:24:44,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:44,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806913973] [2025-01-09 22:24:44,028 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 22:24:44,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:44,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 251 statements into 1 equivalence classes. [2025-01-09 22:24:44,067 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 251 of 251 statements. [2025-01-09 22:24:44,067 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:44,067 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:44,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5698 backedges. 3634 proven. 186 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked. [2025-01-09 22:24:44,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:44,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806913973] [2025-01-09 22:24:44,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806913973] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:44,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761649073] [2025-01-09 22:24:44,464 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 22:24:44,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:44,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:44,466 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 22:24:44,467 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 22:24:44,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 251 statements into 1 equivalence classes. [2025-01-09 22:24:44,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 251 of 251 statements. [2025-01-09 22:24:44,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:24:44,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:44,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-01-09 22:24:44,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:44,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5698 backedges. 3114 proven. 363 refuted. 0 times theorem prover too weak. 2221 trivial. 0 not checked. [2025-01-09 22:24:44,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5698 backedges. 3114 proven. 363 refuted. 0 times theorem prover too weak. 2221 trivial. 0 not checked. [2025-01-09 22:24:44,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761649073] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:44,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:44,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 25 [2025-01-09 22:24:44,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346971705] [2025-01-09 22:24:44,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:44,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-01-09 22:24:44,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:44,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-01-09 22:24:44,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2025-01-09 22:24:44,999 INFO L87 Difference]: Start difference. First operand 408 states and 433 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 22:24:45,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:45,584 INFO L93 Difference]: Finished difference Result 308 states and 323 transitions. [2025-01-09 22:24:45,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-01-09 22:24:45,584 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 251 [2025-01-09 22:24:45,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:45,585 INFO L225 Difference]: With dead ends: 308 [2025-01-09 22:24:45,585 INFO L226 Difference]: Without dead ends: 308 [2025-01-09 22:24:45,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 483 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=517, Invalid=2033, Unknown=0, NotChecked=0, Total=2550 [2025-01-09 22:24:45,587 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 45 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:45,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 32 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 22:24:45,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-01-09 22:24:45,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2025-01-09 22:24:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.0521172638436482) internal successors, (323), 307 states have internal predecessors, (323), 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 22:24:45,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 323 transitions. [2025-01-09 22:24:45,590 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 323 transitions. Word has length 251 [2025-01-09 22:24:45,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:45,590 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 323 transitions. [2025-01-09 22:24:45,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 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 22:24:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 323 transitions. [2025-01-09 22:24:45,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2025-01-09 22:24:45,592 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:45,592 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 54, 54, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:24:45,599 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 22:24:45,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:45,792 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:45,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash -375165583, now seen corresponding path program 8 times [2025-01-09 22:24:45,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:45,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518678961] [2025-01-09 22:24:45,793 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:45,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:45,812 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 267 statements into 2 equivalence classes. [2025-01-09 22:24:45,837 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 267 of 267 statements. [2025-01-09 22:24:45,837 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:45,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6570 backedges. 3779 proven. 261 refuted. 0 times theorem prover too weak. 2530 trivial. 0 not checked. [2025-01-09 22:24:46,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:46,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518678961] [2025-01-09 22:24:46,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518678961] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:46,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219574458] [2025-01-09 22:24:46,259 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:24:46,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:46,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:46,261 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 22:24:46,262 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 22:24:46,381 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 267 statements into 2 equivalence classes. [2025-01-09 22:24:46,463 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 267 of 267 statements. [2025-01-09 22:24:46,463 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:24:46,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:46,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-01-09 22:24:46,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6570 backedges. 4099 proven. 601 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2025-01-09 22:24:46,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6570 backedges. 4099 proven. 601 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2025-01-09 22:24:46,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219574458] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:46,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:46,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 29 [2025-01-09 22:24:46,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514975875] [2025-01-09 22:24:46,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:46,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-01-09 22:24:46,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:46,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-01-09 22:24:46,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=648, Unknown=0, NotChecked=0, Total=812 [2025-01-09 22:24:46,970 INFO L87 Difference]: Start difference. First operand 308 states and 323 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 22:24:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:47,736 INFO L93 Difference]: Finished difference Result 308 states and 318 transitions. [2025-01-09 22:24:47,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-01-09 22:24:47,737 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 267 [2025-01-09 22:24:47,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:47,738 INFO L225 Difference]: With dead ends: 308 [2025-01-09 22:24:47,738 INFO L226 Difference]: Without dead ends: 308 [2025-01-09 22:24:47,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 511 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=762, Invalid=3144, Unknown=0, NotChecked=0, Total=3906 [2025-01-09 22:24:47,739 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 47 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:47,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 27 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 22:24:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-01-09 22:24:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2025-01-09 22:24:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.0358306188925082) internal successors, (318), 307 states have internal predecessors, (318), 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 22:24:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 318 transitions. [2025-01-09 22:24:47,743 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 318 transitions. Word has length 267 [2025-01-09 22:24:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:47,743 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 318 transitions. [2025-01-09 22:24:47,743 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 22:24:47,743 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 318 transitions. [2025-01-09 22:24:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2025-01-09 22:24:47,744 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:47,744 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 58, 58, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:24:47,754 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-01-09 22:24:47,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-01-09 22:24:47,944 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:47,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:47,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1610807375, now seen corresponding path program 9 times [2025-01-09 22:24:47,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:47,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605096586] [2025-01-09 22:24:47,946 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:47,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:47,964 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 283 statements into 33 equivalence classes. [2025-01-09 22:24:47,990 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 92 of 283 statements. [2025-01-09 22:24:47,990 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-09 22:24:47,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7506 backedges. 0 proven. 2373 refuted. 0 times theorem prover too weak. 5133 trivial. 0 not checked. [2025-01-09 22:24:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605096586] [2025-01-09 22:24:48,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605096586] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:48,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507498602] [2025-01-09 22:24:48,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:24:48,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:48,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:48,330 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 22:24:48,340 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 22:24:48,549 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 283 statements into 33 equivalence classes. [2025-01-09 22:24:48,626 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 92 of 283 statements. [2025-01-09 22:24:48,627 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-09 22:24:48,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:48,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 22:24:48,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:49,057 INFO L134 CoverageAnalysis]: Checked inductivity of 7506 backedges. 3361 proven. 389 refuted. 0 times theorem prover too weak. 3756 trivial. 0 not checked. [2025-01-09 22:24:49,060 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 7506 backedges. 3361 proven. 389 refuted. 0 times theorem prover too weak. 3756 trivial. 0 not checked. [2025-01-09 22:24:49,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507498602] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:49,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:49,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23, 23] total 57 [2025-01-09 22:24:49,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080625248] [2025-01-09 22:24:49,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:49,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-01-09 22:24:49,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:49,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-01-09 22:24:49,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=2705, Unknown=0, NotChecked=0, Total=3192 [2025-01-09 22:24:49,620 INFO L87 Difference]: Start difference. First operand 308 states and 318 transitions. Second operand has 57 states, 57 states have (on average 3.807017543859649) internal successors, (217), 57 states have internal predecessors, (217), 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 22:24:51,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:51,289 INFO L93 Difference]: Finished difference Result 554 states and 575 transitions. [2025-01-09 22:24:51,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-01-09 22:24:51,289 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.807017543859649) internal successors, (217), 57 states have internal predecessors, (217), 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 283 [2025-01-09 22:24:51,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:51,290 INFO L225 Difference]: With dead ends: 554 [2025-01-09 22:24:51,291 INFO L226 Difference]: Without dead ends: 554 [2025-01-09 22:24:51,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2874 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2245, Invalid=9097, Unknown=0, NotChecked=0, Total=11342 [2025-01-09 22:24:51,294 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 304 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:51,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 27 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-01-09 22:24:51,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2025-01-09 22:24:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 312. [2025-01-09 22:24:51,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.0385852090032155) internal successors, (323), 311 states have internal predecessors, (323), 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 22:24:51,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 323 transitions. [2025-01-09 22:24:51,301 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 323 transitions. Word has length 283 [2025-01-09 22:24:51,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:51,301 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 323 transitions. [2025-01-09 22:24:51,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.807017543859649) internal successors, (217), 57 states have internal predecessors, (217), 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 22:24:51,301 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 323 transitions. [2025-01-09 22:24:51,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-01-09 22:24:51,302 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:51,302 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 64, 64, 10, 9, 9, 9, 9, 1, 1, 1] [2025-01-09 22:24:51,312 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 22:24:51,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:51,506 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:51,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:51,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1039783099, now seen corresponding path program 10 times [2025-01-09 22:24:51,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:51,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245019571] [2025-01-09 22:24:51,508 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 22:24:51,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:51,527 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 307 statements into 2 equivalence classes. [2025-01-09 22:24:51,594 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 307 of 307 statements. [2025-01-09 22:24:51,594 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 22:24:51,594 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:52,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9030 backedges. 6058 proven. 1672 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2025-01-09 22:24:52,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:52,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245019571] [2025-01-09 22:24:52,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245019571] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:52,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184329628] [2025-01-09 22:24:52,069 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 22:24:52,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:52,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:52,078 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 22:24:52,083 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 22:24:52,216 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 307 statements into 2 equivalence classes. [2025-01-09 22:24:52,405 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 307 of 307 statements. [2025-01-09 22:24:52,405 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 22:24:52,405 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:52,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-01-09 22:24:52,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:52,995 INFO L134 CoverageAnalysis]: Checked inductivity of 9030 backedges. 359 proven. 7990 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2025-01-09 22:24:52,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 9030 backedges. 359 proven. 7990 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2025-01-09 22:24:53,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184329628] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:53,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:53,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 24] total 54 [2025-01-09 22:24:53,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871774327] [2025-01-09 22:24:53,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:53,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-01-09 22:24:53,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:53,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-01-09 22:24:53,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2438, Unknown=0, NotChecked=0, Total=2862 [2025-01-09 22:24:53,545 INFO L87 Difference]: Start difference. First operand 312 states and 323 transitions. Second operand has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 states have internal predecessors, (283), 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 22:24:55,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:55,895 INFO L93 Difference]: Finished difference Result 457 states and 465 transitions. [2025-01-09 22:24:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2025-01-09 22:24:55,895 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 states have internal predecessors, (283), 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 307 [2025-01-09 22:24:55,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:55,896 INFO L225 Difference]: With dead ends: 457 [2025-01-09 22:24:55,896 INFO L226 Difference]: Without dead ends: 457 [2025-01-09 22:24:55,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 570 SyntacticMatches, 10 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6713 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3445, Invalid=19507, Unknown=0, NotChecked=0, Total=22952 [2025-01-09 22:24:55,897 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 273 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2490 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 2522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:55,897 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 56 Invalid, 2522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2490 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-01-09 22:24:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2025-01-09 22:24:55,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 402. [2025-01-09 22:24:55,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.0199501246882794) internal successors, (409), 401 states have internal predecessors, (409), 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 22:24:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 409 transitions. [2025-01-09 22:24:55,901 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 409 transitions. Word has length 307 [2025-01-09 22:24:55,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:55,902 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 409 transitions. [2025-01-09 22:24:55,902 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 states have internal predecessors, (283), 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 22:24:55,902 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 409 transitions. [2025-01-09 22:24:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2025-01-09 22:24:55,903 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:55,903 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 74, 74, 11, 10, 10, 10, 10, 1, 1, 1] [2025-01-09 22:24:55,912 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 22:24:56,107 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,SelfDestructingSolverStorable32 [2025-01-09 22:24:56,107 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:24:56,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:24:56,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1752457228, now seen corresponding path program 11 times [2025-01-09 22:24:56,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:24:56,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998222798] [2025-01-09 22:24:56,107 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 22:24:56,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:24:56,136 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 352 statements into 34 equivalence classes. [2025-01-09 22:24:56,419 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) and asserted 260 of 352 statements. [2025-01-09 22:24:56,420 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2025-01-09 22:24:56,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 12011 backedges. 7816 proven. 529 refuted. 0 times theorem prover too weak. 3666 trivial. 0 not checked. [2025-01-09 22:24:56,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:24:56,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998222798] [2025-01-09 22:24:56,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998222798] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:24:56,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298699483] [2025-01-09 22:24:56,907 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 22:24:56,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:24:56,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:24:56,909 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 22:24:56,910 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 22:24:57,050 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 352 statements into 34 equivalence classes. [2025-01-09 22:24:57,475 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) and asserted 260 of 352 statements. [2025-01-09 22:24:57,476 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2025-01-09 22:24:57,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:24:57,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-01-09 22:24:57,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:24:57,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12011 backedges. 8406 proven. 2144 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2025-01-09 22:24:57,945 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:24:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 12011 backedges. 8894 proven. 1656 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2025-01-09 22:24:58,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298699483] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:24:58,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:24:58,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2025-01-09 22:24:58,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432462377] [2025-01-09 22:24:58,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:24:58,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-01-09 22:24:58,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:24:58,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-01-09 22:24:58,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2025-01-09 22:24:58,329 INFO L87 Difference]: Start difference. First operand 402 states and 409 transitions. Second operand has 46 states, 46 states have (on average 4.586956521739131) internal successors, (211), 46 states have internal predecessors, (211), 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 22:24:59,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:24:59,876 INFO L93 Difference]: Finished difference Result 361 states and 364 transitions. [2025-01-09 22:24:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-01-09 22:24:59,877 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.586956521739131) internal successors, (211), 46 states have internal predecessors, (211), 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 352 [2025-01-09 22:24:59,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:24:59,878 INFO L225 Difference]: With dead ends: 361 [2025-01-09 22:24:59,878 INFO L226 Difference]: Without dead ends: 361 [2025-01-09 22:24:59,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 665 SyntacticMatches, 16 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3143 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2245, Invalid=8261, Unknown=0, NotChecked=0, Total=10506 [2025-01-09 22:24:59,880 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 22:24:59,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 29 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 22:24:59,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2025-01-09 22:24:59,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2025-01-09 22:24:59,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.011111111111111) internal successors, (364), 360 states have internal predecessors, (364), 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 22:24:59,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 364 transitions. [2025-01-09 22:24:59,883 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 364 transitions. Word has length 352 [2025-01-09 22:24:59,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:24:59,883 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 364 transitions. [2025-01-09 22:24:59,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.586956521739131) internal successors, (211), 46 states have internal predecessors, (211), 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 22:24:59,883 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 364 transitions. [2025-01-09 22:24:59,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-01-09 22:24:59,884 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:24:59,884 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 75, 75, 11, 10, 10, 10, 10, 1, 1, 1] [2025-01-09 22:24:59,895 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 22:25:00,089 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,SelfDestructingSolverStorable33 [2025-01-09 22:25:00,091 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:00,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:00,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1862474823, now seen corresponding path program 12 times [2025-01-09 22:25:00,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:00,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36582694] [2025-01-09 22:25:00,092 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 22:25:00,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:00,116 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 356 statements into 34 equivalence classes. [2025-01-09 22:25:00,263 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) and asserted 193 of 356 statements. [2025-01-09 22:25:00,264 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2025-01-09 22:25:00,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12320 backedges. 0 proven. 3381 refuted. 0 times theorem prover too weak. 8939 trivial. 0 not checked. [2025-01-09 22:25:00,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:00,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36582694] [2025-01-09 22:25:00,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36582694] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:00,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477028966] [2025-01-09 22:25:00,659 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 22:25:00,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:00,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:00,665 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 22:25:00,668 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 22:25:00,812 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 356 statements into 34 equivalence classes. [2025-01-09 22:25:01,319 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) and asserted 193 of 356 statements. [2025-01-09 22:25:01,320 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2025-01-09 22:25:01,320 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:01,324 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-01-09 22:25:01,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:01,334 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 22:25:02,173 INFO L134 CoverageAnalysis]: Checked inductivity of 12320 backedges. 0 proven. 3381 refuted. 0 times theorem prover too weak. 8939 trivial. 0 not checked. [2025-01-09 22:25:02,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:03,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12320 backedges. 0 proven. 3381 refuted. 0 times theorem prover too weak. 8939 trivial. 0 not checked. [2025-01-09 22:25:03,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477028966] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:03,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:03,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 43 [2025-01-09 22:25:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050711203] [2025-01-09 22:25:03,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:03,380 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-01-09 22:25:03,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:03,381 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-01-09 22:25:03,381 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=1331, Unknown=0, NotChecked=0, Total=1892 [2025-01-09 22:25:03,381 INFO L87 Difference]: Start difference. First operand 361 states and 364 transitions. Second operand has 44 states, 43 states have (on average 4.069767441860465) internal successors, (175), 44 states have internal predecessors, (175), 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 22:25:04,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:04,078 INFO L93 Difference]: Finished difference Result 413 states and 429 transitions. [2025-01-09 22:25:04,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-01-09 22:25:04,079 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 4.069767441860465) internal successors, (175), 44 states have internal predecessors, (175), 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 356 [2025-01-09 22:25:04,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:04,080 INFO L225 Difference]: With dead ends: 413 [2025-01-09 22:25:04,080 INFO L226 Difference]: Without dead ends: 413 [2025-01-09 22:25:04,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 716 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1367, Invalid=3189, Unknown=0, NotChecked=0, Total=4556 [2025-01-09 22:25:04,081 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 103 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:04,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 18 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:25:04,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2025-01-09 22:25:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2025-01-09 22:25:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.0412621359223302) internal successors, (429), 412 states have internal predecessors, (429), 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 22:25:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 429 transitions. [2025-01-09 22:25:04,085 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 429 transitions. Word has length 356 [2025-01-09 22:25:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:04,085 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 429 transitions. [2025-01-09 22:25:04,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 4.069767441860465) internal successors, (175), 44 states have internal predecessors, (175), 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 22:25:04,085 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 429 transitions. [2025-01-09 22:25:04,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2025-01-09 22:25:04,086 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:04,086 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 88, 88, 11, 10, 10, 10, 10, 1, 1, 1] [2025-01-09 22:25:04,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-01-09 22:25:04,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:04,291 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:04,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1135030150, now seen corresponding path program 13 times [2025-01-09 22:25:04,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:04,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192934871] [2025-01-09 22:25:04,292 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 22:25:04,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:04,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 408 statements into 1 equivalence classes. [2025-01-09 22:25:04,349 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 408 of 408 statements. [2025-01-09 22:25:04,349 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:04,349 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 16701 backedges. 11783 proven. 3028 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2025-01-09 22:25:04,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:04,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192934871] [2025-01-09 22:25:04,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192934871] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:04,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635486866] [2025-01-09 22:25:04,971 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 22:25:04,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:04,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:04,973 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 22:25:04,978 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 22:25:05,134 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 408 statements into 1 equivalence classes. [2025-01-09 22:25:05,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 408 of 408 statements. [2025-01-09 22:25:05,253 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:05,253 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:05,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-01-09 22:25:05,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:05,662 INFO L134 CoverageAnalysis]: Checked inductivity of 16701 backedges. 12308 proven. 2503 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2025-01-09 22:25:05,662 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:06,021 INFO L134 CoverageAnalysis]: Checked inductivity of 16701 backedges. 12308 proven. 2503 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2025-01-09 22:25:06,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635486866] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:06,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:06,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 36 [2025-01-09 22:25:06,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596067160] [2025-01-09 22:25:06,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:06,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-01-09 22:25:06,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:06,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-01-09 22:25:06,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=947, Unknown=0, NotChecked=0, Total=1260 [2025-01-09 22:25:06,023 INFO L87 Difference]: Start difference. First operand 413 states and 429 transitions. Second operand has 36 states, 36 states have (on average 5.305555555555555) internal successors, (191), 36 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 22:25:07,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:07,022 INFO L93 Difference]: Finished difference Result 413 states and 427 transitions. [2025-01-09 22:25:07,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2025-01-09 22:25:07,022 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.305555555555555) internal successors, (191), 36 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 408 [2025-01-09 22:25:07,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:07,024 INFO L225 Difference]: With dead ends: 413 [2025-01-09 22:25:07,024 INFO L226 Difference]: Without dead ends: 413 [2025-01-09 22:25:07,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 784 SyntacticMatches, 19 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2737, Invalid=7565, Unknown=0, NotChecked=0, Total=10302 [2025-01-09 22:25:07,025 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 64 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:07,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 99 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 22:25:07,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2025-01-09 22:25:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2025-01-09 22:25:07,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.0364077669902914) internal successors, (427), 412 states have internal predecessors, (427), 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 22:25:07,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 427 transitions. [2025-01-09 22:25:07,033 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 427 transitions. Word has length 408 [2025-01-09 22:25:07,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:07,034 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 427 transitions. [2025-01-09 22:25:07,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.305555555555555) internal successors, (191), 36 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 22:25:07,034 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 427 transitions. [2025-01-09 22:25:07,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2025-01-09 22:25:07,036 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:07,036 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 89, 89, 11, 10, 10, 10, 10, 1, 1, 1] [2025-01-09 22:25:07,044 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 22:25:07,241 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,SelfDestructingSolverStorable35 [2025-01-09 22:25:07,242 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:07,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:07,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1063223275, now seen corresponding path program 14 times [2025-01-09 22:25:07,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:07,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233050499] [2025-01-09 22:25:07,242 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:25:07,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:07,271 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 412 statements into 2 equivalence classes. [2025-01-09 22:25:07,307 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 412 of 412 statements. [2025-01-09 22:25:07,307 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:25:07,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 17066 backedges. 1213 proven. 14908 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2025-01-09 22:25:08,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:08,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233050499] [2025-01-09 22:25:08,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233050499] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:08,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564973290] [2025-01-09 22:25:08,538 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-09 22:25:08,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:08,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:08,540 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 22:25:08,542 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 22:25:08,708 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 412 statements into 2 equivalence classes. [2025-01-09 22:25:08,823 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 412 of 412 statements. [2025-01-09 22:25:08,824 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-09 22:25:08,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:08,828 INFO L256 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-01-09 22:25:08,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:09,411 INFO L134 CoverageAnalysis]: Checked inductivity of 17066 backedges. 4258 proven. 11575 refuted. 0 times theorem prover too weak. 1233 trivial. 0 not checked. [2025-01-09 22:25:09,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:09,843 INFO L134 CoverageAnalysis]: Checked inductivity of 17066 backedges. 4258 proven. 11575 refuted. 0 times theorem prover too weak. 1233 trivial. 0 not checked. [2025-01-09 22:25:09,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564973290] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:09,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:09,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 26, 26] total 53 [2025-01-09 22:25:09,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003236895] [2025-01-09 22:25:09,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:09,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-01-09 22:25:09,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:09,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-01-09 22:25:09,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2025-01-09 22:25:09,845 INFO L87 Difference]: Start difference. First operand 413 states and 427 transitions. Second operand has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 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 22:25:11,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:11,273 INFO L93 Difference]: Finished difference Result 469 states and 484 transitions. [2025-01-09 22:25:11,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2025-01-09 22:25:11,273 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 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 412 [2025-01-09 22:25:11,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:11,275 INFO L225 Difference]: With dead ends: 469 [2025-01-09 22:25:11,275 INFO L226 Difference]: Without dead ends: 469 [2025-01-09 22:25:11,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 786 SyntacticMatches, 23 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7612 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=3811, Invalid=15929, Unknown=0, NotChecked=0, Total=19740 [2025-01-09 22:25:11,276 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:11,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 43 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-01-09 22:25:11,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2025-01-09 22:25:11,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 466. [2025-01-09 22:25:11,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.0344086021505376) internal successors, (481), 465 states have internal predecessors, (481), 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 22:25:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 481 transitions. [2025-01-09 22:25:11,282 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 481 transitions. Word has length 412 [2025-01-09 22:25:11,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:11,282 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 481 transitions. [2025-01-09 22:25:11,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 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 22:25:11,282 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 481 transitions. [2025-01-09 22:25:11,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2025-01-09 22:25:11,285 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:11,285 INFO L218 NwaCegarLoop]: trace histogram [101, 101, 100, 100, 12, 11, 11, 11, 11, 1, 1, 1] [2025-01-09 22:25:11,293 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 22:25:11,489 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,SelfDestructingSolverStorable36 [2025-01-09 22:25:11,489 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:11,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:11,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1197303285, now seen corresponding path program 15 times [2025-01-09 22:25:11,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:11,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131944579] [2025-01-09 22:25:11,490 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:25:11,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:11,515 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 461 statements into 35 equivalence classes. [2025-01-09 22:25:11,553 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 168 of 461 statements. [2025-01-09 22:25:11,553 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-01-09 22:25:11,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 21497 backedges. 3133 proven. 8078 refuted. 0 times theorem prover too weak. 10286 trivial. 0 not checked. [2025-01-09 22:25:12,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:12,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131944579] [2025-01-09 22:25:12,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131944579] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:12,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031754951] [2025-01-09 22:25:12,048 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-09 22:25:12,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:12,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:12,050 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 22:25:12,052 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 22:25:12,231 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 461 statements into 35 equivalence classes. [2025-01-09 22:25:12,393 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 168 of 461 statements. [2025-01-09 22:25:12,393 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-01-09 22:25:12,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:12,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-01-09 22:25:12,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:12,414 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 22:25:13,729 INFO L134 CoverageAnalysis]: Checked inductivity of 21497 backedges. 3133 proven. 8078 refuted. 0 times theorem prover too weak. 10286 trivial. 0 not checked. [2025-01-09 22:25:13,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:15,270 INFO L134 CoverageAnalysis]: Checked inductivity of 21497 backedges. 0 proven. 11211 refuted. 0 times theorem prover too weak. 10286 trivial. 0 not checked. [2025-01-09 22:25:15,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031754951] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:15,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2025-01-09 22:25:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087314005] [2025-01-09 22:25:15,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:15,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-01-09 22:25:15,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:15,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-01-09 22:25:15,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=2630, Unknown=0, NotChecked=0, Total=3422 [2025-01-09 22:25:15,272 INFO L87 Difference]: Start difference. First operand 466 states and 481 transitions. Second operand has 59 states, 58 states have (on average 3.586206896551724) internal successors, (208), 59 states have internal predecessors, (208), 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 22:25:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:22,254 INFO L93 Difference]: Finished difference Result 778 states and 835 transitions. [2025-01-09 22:25:22,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2025-01-09 22:25:22,254 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 3.586206896551724) internal successors, (208), 59 states have internal predecessors, (208), 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 461 [2025-01-09 22:25:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:22,256 INFO L225 Difference]: With dead ends: 778 [2025-01-09 22:25:22,256 INFO L226 Difference]: Without dead ends: 778 [2025-01-09 22:25:22,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1079 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14130 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=10778, Invalid=28228, Unknown=0, NotChecked=0, Total=39006 [2025-01-09 22:25:22,258 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 587 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:22,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 20 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:25:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2025-01-09 22:25:22,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 673. [2025-01-09 22:25:22,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 672 states have (on average 1.0505952380952381) internal successors, (706), 672 states have internal predecessors, (706), 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 22:25:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 706 transitions. [2025-01-09 22:25:22,265 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 706 transitions. Word has length 461 [2025-01-09 22:25:22,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:22,266 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 706 transitions. [2025-01-09 22:25:22,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 3.586206896551724) internal successors, (208), 59 states have internal predecessors, (208), 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 22:25:22,266 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 706 transitions. [2025-01-09 22:25:22,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2025-01-09 22:25:22,268 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:22,268 INFO L218 NwaCegarLoop]: trace histogram [138, 138, 137, 137, 14, 13, 13, 13, 13, 1, 1, 1] [2025-01-09 22:25:22,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-01-09 22:25:22,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-01-09 22:25:22,469 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:22,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:22,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1522484022, now seen corresponding path program 16 times [2025-01-09 22:25:22,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:22,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552874952] [2025-01-09 22:25:22,470 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 22:25:22,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:22,504 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 619 statements into 2 equivalence classes. [2025-01-09 22:25:22,726 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 619 of 619 statements. [2025-01-09 22:25:22,726 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 22:25:22,726 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:24,316 INFO L134 CoverageAnalysis]: Checked inductivity of 39872 backedges. 1865 proven. 35380 refuted. 0 times theorem prover too weak. 2627 trivial. 0 not checked. [2025-01-09 22:25:24,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:24,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552874952] [2025-01-09 22:25:24,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552874952] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:24,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209377439] [2025-01-09 22:25:24,317 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-09 22:25:24,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:24,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:24,319 INFO L229 MonitoredProcess]: Starting monitored process 31 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 22:25:24,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-01-09 22:25:24,532 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 619 statements into 2 equivalence classes. [2025-01-09 22:25:25,340 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 619 of 619 statements. [2025-01-09 22:25:25,340 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-09 22:25:25,340 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:25,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 2245 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-01-09 22:25:25,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 39872 backedges. 1402 proven. 35845 refuted. 0 times theorem prover too weak. 2625 trivial. 0 not checked. [2025-01-09 22:25:26,579 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 39872 backedges. 1402 proven. 35845 refuted. 0 times theorem prover too weak. 2625 trivial. 0 not checked. [2025-01-09 22:25:27,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209377439] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:27,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:27,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41, 41] total 83 [2025-01-09 22:25:27,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785163848] [2025-01-09 22:25:27,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:27,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2025-01-09 22:25:27,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:27,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2025-01-09 22:25:27,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1793, Invalid=5013, Unknown=0, NotChecked=0, Total=6806 [2025-01-09 22:25:27,624 INFO L87 Difference]: Start difference. First operand 673 states and 706 transitions. Second operand has 83 states, 83 states have (on average 5.253012048192771) internal successors, (436), 83 states have internal predecessors, (436), 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 22:25:34,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:34,338 INFO L93 Difference]: Finished difference Result 3472 states and 3773 transitions. [2025-01-09 22:25:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 347 states. [2025-01-09 22:25:34,338 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 5.253012048192771) internal successors, (436), 83 states have internal predecessors, (436), 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 619 [2025-01-09 22:25:34,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:34,348 INFO L225 Difference]: With dead ends: 3472 [2025-01-09 22:25:34,348 INFO L226 Difference]: Without dead ends: 3472 [2025-01-09 22:25:34,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1598 GetRequests, 1174 SyntacticMatches, 21 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91651 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=45576, Invalid=118044, Unknown=0, NotChecked=0, Total=163620 [2025-01-09 22:25:34,355 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:34,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-01-09 22:25:34,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2025-01-09 22:25:34,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 1920. [2025-01-09 22:25:34,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 1.0844189682126106) internal successors, (2081), 1919 states have internal predecessors, (2081), 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 22:25:34,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2081 transitions. [2025-01-09 22:25:34,375 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2081 transitions. Word has length 619 [2025-01-09 22:25:34,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:34,375 INFO L471 AbstractCegarLoop]: Abstraction has 1920 states and 2081 transitions. [2025-01-09 22:25:34,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 5.253012048192771) internal successors, (436), 83 states have internal predecessors, (436), 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 22:25:34,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2081 transitions. [2025-01-09 22:25:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1110 [2025-01-09 22:25:34,382 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:34,382 INFO L218 NwaCegarLoop]: trace histogram [248, 248, 247, 247, 24, 23, 23, 23, 23, 1, 1, 1] [2025-01-09 22:25:34,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-01-09 22:25:34,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-01-09 22:25:34,586 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:34,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:34,591 INFO L85 PathProgramCache]: Analyzing trace with hash -438998794, now seen corresponding path program 17 times [2025-01-09 22:25:34,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:34,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615386693] [2025-01-09 22:25:34,592 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 22:25:34,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:34,646 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1109 statements into 84 equivalence classes. [2025-01-09 22:25:35,015 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) and asserted 420 of 1109 statements. [2025-01-09 22:25:35,015 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2025-01-09 22:25:35,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:35,776 INFO L134 CoverageAnalysis]: Checked inductivity of 129257 backedges. 63329 proven. 3594 refuted. 0 times theorem prover too weak. 62334 trivial. 0 not checked. [2025-01-09 22:25:35,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:35,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615386693] [2025-01-09 22:25:35,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615386693] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:35,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705532583] [2025-01-09 22:25:35,776 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-01-09 22:25:35,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:35,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:35,778 INFO L229 MonitoredProcess]: Starting monitored process 32 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 22:25:35,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-01-09 22:25:36,082 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1109 statements into 84 equivalence classes. [2025-01-09 22:25:37,577 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) and asserted 420 of 1109 statements. [2025-01-09 22:25:37,578 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2025-01-09 22:25:37,578 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:37,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-01-09 22:25:37,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:38,228 INFO L134 CoverageAnalysis]: Checked inductivity of 129257 backedges. 63329 proven. 3594 refuted. 0 times theorem prover too weak. 62334 trivial. 0 not checked. [2025-01-09 22:25:38,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:38,668 INFO L134 CoverageAnalysis]: Checked inductivity of 129257 backedges. 64325 proven. 2598 refuted. 0 times theorem prover too weak. 62334 trivial. 0 not checked. [2025-01-09 22:25:38,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705532583] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:38,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:38,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 51 [2025-01-09 22:25:38,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977613053] [2025-01-09 22:25:38,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:38,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-01-09 22:25:38,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:38,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-01-09 22:25:38,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=2070, Unknown=0, NotChecked=0, Total=2550 [2025-01-09 22:25:38,671 INFO L87 Difference]: Start difference. First operand 1920 states and 2081 transitions. Second operand has 51 states, 51 states have (on average 4.529411764705882) internal successors, (231), 51 states have internal predecessors, (231), 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 22:25:40,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:40,188 INFO L93 Difference]: Finished difference Result 1515 states and 1619 transitions. [2025-01-09 22:25:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2025-01-09 22:25:40,192 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.529411764705882) internal successors, (231), 51 states have internal predecessors, (231), 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 1109 [2025-01-09 22:25:40,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:40,195 INFO L225 Difference]: With dead ends: 1515 [2025-01-09 22:25:40,195 INFO L226 Difference]: Without dead ends: 1515 [2025-01-09 22:25:40,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2314 GetRequests, 2176 SyntacticMatches, 18 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3362, Invalid=11400, Unknown=0, NotChecked=0, Total=14762 [2025-01-09 22:25:40,196 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 68 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 2024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:40,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 56 Invalid, 2024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-01-09 22:25:40,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2025-01-09 22:25:40,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1515. [2025-01-09 22:25:40,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1514 states have (on average 1.0693527080581242) internal successors, (1619), 1514 states have internal predecessors, (1619), 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 22:25:40,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1619 transitions. [2025-01-09 22:25:40,213 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1619 transitions. Word has length 1109 [2025-01-09 22:25:40,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:40,213 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 1619 transitions. [2025-01-09 22:25:40,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.529411764705882) internal successors, (231), 51 states have internal predecessors, (231), 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 22:25:40,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1619 transitions. [2025-01-09 22:25:40,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1150 [2025-01-09 22:25:40,227 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:40,227 INFO L218 NwaCegarLoop]: trace histogram [258, 258, 257, 257, 24, 23, 23, 23, 23, 1, 1, 1] [2025-01-09 22:25:40,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-01-09 22:25:40,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-01-09 22:25:40,428 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:40,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:40,428 INFO L85 PathProgramCache]: Analyzing trace with hash 91308630, now seen corresponding path program 18 times [2025-01-09 22:25:40,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:40,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326583989] [2025-01-09 22:25:40,429 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 22:25:40,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:40,504 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1149 statements into 91 equivalence classes. [2025-01-09 22:25:41,357 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) and asserted 631 of 1149 statements. [2025-01-09 22:25:41,357 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2025-01-09 22:25:41,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 139577 backedges. 0 proven. 55521 refuted. 0 times theorem prover too weak. 84056 trivial. 0 not checked. [2025-01-09 22:25:43,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:25:43,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326583989] [2025-01-09 22:25:43,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326583989] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:25:43,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755997692] [2025-01-09 22:25:43,240 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-01-09 22:25:43,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:25:43,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:25:43,242 INFO L229 MonitoredProcess]: Starting monitored process 33 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 22:25:43,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-01-09 22:25:43,552 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1149 statements into 91 equivalence classes. [2025-01-09 22:25:48,365 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) and asserted 631 of 1149 statements. [2025-01-09 22:25:48,365 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2025-01-09 22:25:48,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:25:48,385 INFO L256 TraceCheckSpWp]: Trace formula consists of 2284 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-01-09 22:25:48,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:25:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 139577 backedges. 30582 proven. 25225 refuted. 0 times theorem prover too weak. 83770 trivial. 0 not checked. [2025-01-09 22:25:50,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:25:52,122 INFO L134 CoverageAnalysis]: Checked inductivity of 139577 backedges. 852 proven. 54955 refuted. 0 times theorem prover too weak. 83770 trivial. 0 not checked. [2025-01-09 22:25:52,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755997692] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:25:52,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:25:52,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 35, 35] total 95 [2025-01-09 22:25:52,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829064483] [2025-01-09 22:25:52,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:25:52,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2025-01-09 22:25:52,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:25:52,125 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2025-01-09 22:25:52,126 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=7984, Unknown=0, NotChecked=0, Total=8930 [2025-01-09 22:25:52,126 INFO L87 Difference]: Start difference. First operand 1515 states and 1619 transitions. Second operand has 95 states, 95 states have (on average 3.8842105263157896) internal successors, (369), 95 states have internal predecessors, (369), 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 22:25:54,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:25:55,000 INFO L93 Difference]: Finished difference Result 2900 states and 3038 transitions. [2025-01-09 22:25:55,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2025-01-09 22:25:55,000 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 3.8842105263157896) internal successors, (369), 95 states have internal predecessors, (369), 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 1149 [2025-01-09 22:25:55,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:25:55,009 INFO L225 Difference]: With dead ends: 2900 [2025-01-09 22:25:55,012 INFO L226 Difference]: Without dead ends: 2900 [2025-01-09 22:25:55,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2400 GetRequests, 2231 SyntacticMatches, 1 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8070 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=5323, Invalid=23407, Unknown=0, NotChecked=0, Total=28730 [2025-01-09 22:25:55,015 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 277 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-01-09 22:25:55,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 40 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-01-09 22:25:55,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2900 states. [2025-01-09 22:25:55,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2900 to 2623. [2025-01-09 22:25:55,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2623 states, 2622 states have (on average 1.0480549199084668) internal successors, (2748), 2622 states have internal predecessors, (2748), 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 22:25:55,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2623 states to 2623 states and 2748 transitions. [2025-01-09 22:25:55,041 INFO L78 Accepts]: Start accepts. Automaton has 2623 states and 2748 transitions. Word has length 1149 [2025-01-09 22:25:55,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:25:55,042 INFO L471 AbstractCegarLoop]: Abstraction has 2623 states and 2748 transitions. [2025-01-09 22:25:55,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 3.8842105263157896) internal successors, (369), 95 states have internal predecessors, (369), 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 22:25:55,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2623 states and 2748 transitions. [2025-01-09 22:25:55,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1158 [2025-01-09 22:25:55,049 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:25:55,049 INFO L218 NwaCegarLoop]: trace histogram [260, 260, 259, 259, 24, 23, 23, 23, 23, 1, 1, 1] [2025-01-09 22:25:55,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-01-09 22:25:55,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2025-01-09 22:25:55,253 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONARRAY_INDEX, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-01-09 22:25:55,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:25:55,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1956456650, now seen corresponding path program 19 times [2025-01-09 22:25:55,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:25:55,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724875091] [2025-01-09 22:25:55,255 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-01-09 22:25:55,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:25:55,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1157 statements into 1 equivalence classes. [2025-01-09 22:25:55,590 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1157 of 1157 statements. [2025-01-09 22:25:55,590 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:25:55,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat