./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05d1274571884b61e0bf3945fec02c622819cbfceb65bf4937493085e5ba6604 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:21:33,794 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:21:33,842 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:21:33,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:21:33,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:21:33,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:21:33,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:21:33,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:21:33,868 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:21:33,868 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:21:33,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:21:33,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:21:33,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:21:33,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:21:33,868 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:21:33,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:21:33,869 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:21:33,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:21:33,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:21:33,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:21:33,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:21:33,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:21:33,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:21:33,870 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:21:33,870 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:21:33,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:21:33,870 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05d1274571884b61e0bf3945fec02c622819cbfceb65bf4937493085e5ba6604 [2025-02-06 10:21:34,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:21:34,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:21:34,097 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:21:34,098 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:21:34,098 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:21:34,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2025-02-06 10:21:35,212 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/15ff197c0/24e57a29473c4ee39b84e86c7383c084/FLAGe3e635f75 [2025-02-06 10:21:35,429 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:21:35,429 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-write.c [2025-02-06 10:21:35,434 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/15ff197c0/24e57a29473c4ee39b84e86c7383c084/FLAGe3e635f75 [2025-02-06 10:21:35,779 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/15ff197c0/24e57a29473c4ee39b84e86c7383c084 [2025-02-06 10:21:35,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:21:35,783 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:21:35,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:21:35,785 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:21:35,788 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:21:35,789 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,790 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f926ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35, skipping insertion in model container [2025-02-06 10:21:35,791 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,800 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:21:35,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:21:35,905 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:21:35,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:21:35,926 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:21:35,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35 WrapperNode [2025-02-06 10:21:35,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:21:35,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:21:35,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:21:35,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:21:35,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,949 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2025-02-06 10:21:35,949 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:21:35,949 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:21:35,949 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:21:35,949 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:21:35,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,960 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,971 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]. [2025-02-06 10:21:35,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,978 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,980 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,981 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,983 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,984 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:21:35,986 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:21:35,986 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:21:35,986 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:21:35,987 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (1/1) ... [2025-02-06 10:21:35,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:21:36,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:36,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 10:21:36,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 10:21:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 10:21:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 10:21:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:21:36,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:21:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 10:21:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 10:21:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 10:21:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:21:36,085 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:21:36,086 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:21:36,217 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L24: call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#mask~0#1.base, main_~#mask~0#1.offset);havoc main_~#mask~0#1.base, main_~#mask~0#1.offset; [2025-02-06 10:21:36,226 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-02-06 10:21:36,226 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:21:36,237 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:21:36,237 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:21:36,237 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:21:36 BoogieIcfgContainer [2025-02-06 10:21:36,237 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:21:36,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:21:36,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:21:36,242 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:21:36,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:21:35" (1/3) ... [2025-02-06 10:21:36,243 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b82b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:21:36, skipping insertion in model container [2025-02-06 10:21:36,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:35" (2/3) ... [2025-02-06 10:21:36,244 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b82b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:21:36, skipping insertion in model container [2025-02-06 10:21:36,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:21:36" (3/3) ... [2025-02-06 10:21:36,245 INFO L128 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_-write.c [2025-02-06 10:21:36,257 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:21:36,258 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ArraysWithLenghtAtDeclaration_-write.c that has 1 procedures, 25 locations, 1 initial locations, 3 loop locations, and 8 error locations. [2025-02-06 10:21:36,290 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:21:36,298 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;@37664bc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:21:36,299 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-02-06 10:21:36,302 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) [2025-02-06 10:21:36,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 10:21:36,305 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:36,306 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 10:21:36,306 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:36,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:36,311 INFO L85 PathProgramCache]: Analyzing trace with hash 59135101, now seen corresponding path program 1 times [2025-02-06 10:21:36,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:36,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619346646] [2025-02-06 10:21:36,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:36,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:36,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 10:21:36,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 10:21:36,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:36,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:36,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:36,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619346646] [2025-02-06 10:21:36,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619346646] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:36,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:36,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:21:36,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071900265] [2025-02-06 10:21:36,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:36,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:21:36,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:36,490 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:21:36,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:36,492 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) [2025-02-06 10:21:36,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:36,530 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2025-02-06 10:21:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:36,532 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 [2025-02-06 10:21:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:36,536 INFO L225 Difference]: With dead ends: 30 [2025-02-06 10:21:36,536 INFO L226 Difference]: Without dead ends: 28 [2025-02-06 10:21:36,537 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 [2025-02-06 10:21:36,540 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 [2025-02-06 10:21:36,540 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] [2025-02-06 10:21:36,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-06 10:21:36,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2025-02-06 10:21:36,557 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) [2025-02-06 10:21:36,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2025-02-06 10:21:36,560 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 5 [2025-02-06 10:21:36,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:36,560 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2025-02-06 10:21:36,560 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) [2025-02-06 10:21:36,560 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2025-02-06 10:21:36,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 10:21:36,561 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:36,561 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 10:21:36,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:21:36,561 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:36,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:36,562 INFO L85 PathProgramCache]: Analyzing trace with hash 59119884, now seen corresponding path program 1 times [2025-02-06 10:21:36,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:36,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942536072] [2025-02-06 10:21:36,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:36,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:36,568 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 10:21:36,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 10:21:36,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:36,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:36,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:36,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942536072] [2025-02-06 10:21:36,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942536072] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:36,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:36,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:36,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680315688] [2025-02-06 10:21:36,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:36,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:21:36,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:36,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:21:36,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:36,637 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) [2025-02-06 10:21:36,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:36,675 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2025-02-06 10:21:36,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:36,675 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 [2025-02-06 10:21:36,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:36,675 INFO L225 Difference]: With dead ends: 43 [2025-02-06 10:21:36,675 INFO L226 Difference]: Without dead ends: 43 [2025-02-06 10:21:36,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:36,676 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 [2025-02-06 10:21:36,676 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] [2025-02-06 10:21:36,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-06 10:21:36,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2025-02-06 10:21:36,678 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) [2025-02-06 10:21:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-02-06 10:21:36,679 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 5 [2025-02-06 10:21:36,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:36,679 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-02-06 10:21:36,679 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) [2025-02-06 10:21:36,679 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-02-06 10:21:36,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 10:21:36,680 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:36,680 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 10:21:36,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:21:36,680 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:36,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:36,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1833181174, now seen corresponding path program 1 times [2025-02-06 10:21:36,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:36,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235438288] [2025-02-06 10:21:36,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:36,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:36,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 10:21:36,692 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 10:21:36,693 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:36,693 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:36,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:36,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235438288] [2025-02-06 10:21:36,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235438288] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:36,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:36,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:21:36,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254298782] [2025-02-06 10:21:36,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:36,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:36,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:36,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:36,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:36,752 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) [2025-02-06 10:21:36,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:36,826 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2025-02-06 10:21:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:36,827 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 [2025-02-06 10:21:36,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:36,827 INFO L225 Difference]: With dead ends: 46 [2025-02-06 10:21:36,828 INFO L226 Difference]: Without dead ends: 46 [2025-02-06 10:21:36,829 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 [2025-02-06 10:21:36,829 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, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:36,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 35 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-06 10:21:36,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2025-02-06 10:21:36,833 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) [2025-02-06 10:21:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2025-02-06 10:21:36,834 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2025-02-06 10:21:36,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:36,834 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2025-02-06 10:21:36,834 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) [2025-02-06 10:21:36,834 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2025-02-06 10:21:36,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 10:21:36,835 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:36,835 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 10:21:36,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 10:21:36,835 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:36,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1833188125, now seen corresponding path program 1 times [2025-02-06 10:21:36,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:36,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824631092] [2025-02-06 10:21:36,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:36,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:36,843 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 10:21:36,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 10:21:36,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:36,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:36,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:36,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824631092] [2025-02-06 10:21:36,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824631092] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:36,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:36,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:36,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358524601] [2025-02-06 10:21:36,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:36,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:36,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:36,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:36,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:36,902 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) [2025-02-06 10:21:36,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:36,930 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2025-02-06 10:21:36,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:36,931 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 [2025-02-06 10:21:36,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:36,931 INFO L225 Difference]: With dead ends: 27 [2025-02-06 10:21:36,931 INFO L226 Difference]: Without dead ends: 27 [2025-02-06 10:21:36,932 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 [2025-02-06 10:21:36,932 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 [2025-02-06 10:21:36,932 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] [2025-02-06 10:21:36,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-06 10:21:36,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-02-06 10:21:36,934 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) [2025-02-06 10:21:36,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-02-06 10:21:36,934 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 6 [2025-02-06 10:21:36,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:36,934 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-02-06 10:21:36,935 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) [2025-02-06 10:21:36,935 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-02-06 10:21:36,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 10:21:36,935 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:36,935 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 10:21:36,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 10:21:36,935 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:36,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:36,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1833188126, now seen corresponding path program 1 times [2025-02-06 10:21:36,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:36,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480525142] [2025-02-06 10:21:36,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:36,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:36,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 10:21:36,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 10:21:36,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:36,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:37,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480525142] [2025-02-06 10:21:37,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480525142] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:37,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:37,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:37,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957429244] [2025-02-06 10:21:37,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:37,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:37,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:37,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:37,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:37,036 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) [2025-02-06 10:21:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:37,075 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2025-02-06 10:21:37,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:37,075 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 [2025-02-06 10:21:37,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:37,076 INFO L225 Difference]: With dead ends: 29 [2025-02-06 10:21:37,076 INFO L226 Difference]: Without dead ends: 29 [2025-02-06 10:21:37,076 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 [2025-02-06 10:21:37,076 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 [2025-02-06 10:21:37,076 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] [2025-02-06 10:21:37,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-02-06 10:21:37,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2025-02-06 10:21:37,078 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) [2025-02-06 10:21:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2025-02-06 10:21:37,078 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2025-02-06 10:21:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:37,078 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2025-02-06 10:21:37,078 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) [2025-02-06 10:21:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2025-02-06 10:21:37,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 10:21:37,079 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:37,079 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:37,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 10:21:37,079 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:37,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:37,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1998256474, now seen corresponding path program 1 times [2025-02-06 10:21:37,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:37,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704283467] [2025-02-06 10:21:37,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:37,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:37,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 10:21:37,093 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 10:21:37,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:37,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:37,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704283467] [2025-02-06 10:21:37,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704283467] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:37,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644969640] [2025-02-06 10:21:37,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:37,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:37,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:37,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:37,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 10:21:37,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 10:21:37,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 10:21:37,211 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:37,211 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 10:21:37,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644969640] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:37,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:37,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-02-06 10:21:37,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145418044] [2025-02-06 10:21:37,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:37,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:21:37,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:37,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:21:37,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:21:37,275 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) [2025-02-06 10:21:37,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:37,343 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2025-02-06 10:21:37,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:21:37,343 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 [2025-02-06 10:21:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:37,345 INFO L225 Difference]: With dead ends: 39 [2025-02-06 10:21:37,345 INFO L226 Difference]: Without dead ends: 39 [2025-02-06 10:21:37,346 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 [2025-02-06 10:21:37,347 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 [2025-02-06 10:21:37,348 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] [2025-02-06 10:21:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-02-06 10:21:37,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-02-06 10:21:37,353 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) [2025-02-06 10:21:37,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2025-02-06 10:21:37,353 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 9 [2025-02-06 10:21:37,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:37,354 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2025-02-06 10:21:37,354 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) [2025-02-06 10:21:37,354 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2025-02-06 10:21:37,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 10:21:37,354 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:37,354 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:37,365 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 10:21:37,554 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 [2025-02-06 10:21:37,555 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:37,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1816401593, now seen corresponding path program 1 times [2025-02-06 10:21:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:37,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313726357] [2025-02-06 10:21:37,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:37,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:37,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:21:37,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:21:37,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:37,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:37,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313726357] [2025-02-06 10:21:37,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313726357] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:37,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105655382] [2025-02-06 10:21:37,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:37,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:37,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:37,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:37,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 10:21:37,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:21:37,645 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:21:37,646 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:37,646 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:21:37,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:37,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105655382] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:37,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:37,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-06 10:21:37,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552776625] [2025-02-06 10:21:37,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:37,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:21:37,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:37,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:21:37,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:21:37,712 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:37,821 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2025-02-06 10:21:37,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:21:37,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-06 10:21:37,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:37,822 INFO L225 Difference]: With dead ends: 65 [2025-02-06 10:21:37,822 INFO L226 Difference]: Without dead ends: 65 [2025-02-06 10:21:37,822 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:37,822 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 85 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:37,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 21 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:37,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-06 10:21:37,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 38. [2025-02-06 10:21:37,824 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) [2025-02-06 10:21:37,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2025-02-06 10:21:37,825 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 10 [2025-02-06 10:21:37,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:37,825 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2025-02-06 10:21:37,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,825 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2025-02-06 10:21:37,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 10:21:37,825 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:37,825 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:37,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:38,026 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 [2025-02-06 10:21:38,026 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:38,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:38,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1816408545, now seen corresponding path program 1 times [2025-02-06 10:21:38,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:38,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716139505] [2025-02-06 10:21:38,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:38,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:38,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:21:38,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:21:38,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:38,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:38,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:38,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:38,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716139505] [2025-02-06 10:21:38,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716139505] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:38,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820240043] [2025-02-06 10:21:38,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:38,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:38,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:38,132 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:38,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 10:21:38,159 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:21:38,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:21:38,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:38,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:38,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 10:21:38,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:38,198 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 [2025-02-06 10:21:38,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:38,274 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:38,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820240043] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:38,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:38,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 10:21:38,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426986979] [2025-02-06 10:21:38,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:38,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:21:38,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:38,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:21:38,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:21:38,349 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) [2025-02-06 10:21:38,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:38,450 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2025-02-06 10:21:38,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:21:38,451 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 [2025-02-06 10:21:38,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:38,451 INFO L225 Difference]: With dead ends: 39 [2025-02-06 10:21:38,451 INFO L226 Difference]: Without dead ends: 39 [2025-02-06 10:21:38,451 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 [2025-02-06 10:21:38,452 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 77 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:38,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 32 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:38,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-02-06 10:21:38,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-02-06 10:21:38,453 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) [2025-02-06 10:21:38,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2025-02-06 10:21:38,453 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 10 [2025-02-06 10:21:38,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:38,454 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2025-02-06 10:21:38,454 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) [2025-02-06 10:21:38,454 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2025-02-06 10:21:38,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:21:38,454 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:38,454 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:38,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:38,654 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 [2025-02-06 10:21:38,654 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:38,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:38,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1762980860, now seen corresponding path program 2 times [2025-02-06 10:21:38,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:38,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004622736] [2025-02-06 10:21:38,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:38,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:38,660 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-06 10:21:38,663 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 14 statements. [2025-02-06 10:21:38,663 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:38,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:38,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:38,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004622736] [2025-02-06 10:21:38,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004622736] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:38,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:38,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:38,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580501851] [2025-02-06 10:21:38,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:38,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:38,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:38,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:38,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:38,697 INFO L87 Difference]: Start difference. First operand 39 states and 44 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) [2025-02-06 10:21:38,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:38,708 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2025-02-06 10:21:38,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:38,708 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 [2025-02-06 10:21:38,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:38,709 INFO L225 Difference]: With dead ends: 37 [2025-02-06 10:21:38,709 INFO L226 Difference]: Without dead ends: 37 [2025-02-06 10:21:38,709 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 [2025-02-06 10:21:38,709 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:38,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 15 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:38,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-06 10:21:38,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-02-06 10:21:38,711 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) [2025-02-06 10:21:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2025-02-06 10:21:38,711 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 14 [2025-02-06 10:21:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:38,711 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2025-02-06 10:21:38,711 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) [2025-02-06 10:21:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2025-02-06 10:21:38,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:21:38,711 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:38,711 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:38,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 10:21:38,711 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:38,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:38,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1762980861, now seen corresponding path program 1 times [2025-02-06 10:21:38,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:38,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486818877] [2025-02-06 10:21:38,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:38,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:38,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:21:38,720 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:21:38,720 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:38,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:38,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:38,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486818877] [2025-02-06 10:21:38,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486818877] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:38,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:38,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:38,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378398085] [2025-02-06 10:21:38,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:38,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:38,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:38,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:38,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:38,820 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) [2025-02-06 10:21:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:38,849 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2025-02-06 10:21:38,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:38,850 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 [2025-02-06 10:21:38,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:38,850 INFO L225 Difference]: With dead ends: 61 [2025-02-06 10:21:38,850 INFO L226 Difference]: Without dead ends: 61 [2025-02-06 10:21:38,850 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 [2025-02-06 10:21:38,850 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 [2025-02-06 10:21:38,851 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] [2025-02-06 10:21:38,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-06 10:21:38,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2025-02-06 10:21:38,853 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) [2025-02-06 10:21:38,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2025-02-06 10:21:38,853 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 14 [2025-02-06 10:21:38,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:38,853 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2025-02-06 10:21:38,853 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) [2025-02-06 10:21:38,853 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2025-02-06 10:21:38,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:21:38,855 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:38,855 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:38,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 10:21:38,855 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:38,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:38,856 INFO L85 PathProgramCache]: Analyzing trace with hash 758906489, now seen corresponding path program 1 times [2025-02-06 10:21:38,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:38,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49367615] [2025-02-06 10:21:38,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:38,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:38,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:21:38,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:21:38,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:38,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:38,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:38,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49367615] [2025-02-06 10:21:38,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49367615] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:38,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [786818725] [2025-02-06 10:21:38,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:38,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:38,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:38,951 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:38,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 10:21:38,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:21:38,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:21:38,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:38,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:38,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:21:38,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:39,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:39,067 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:39,096 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 [2025-02-06 10:21:39,140 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:39,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [786818725] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:39,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:39,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-02-06 10:21:39,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886047042] [2025-02-06 10:21:39,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:39,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:21:39,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:39,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:21:39,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:21:39,142 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) [2025-02-06 10:21:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:39,201 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2025-02-06 10:21:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:21:39,202 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 [2025-02-06 10:21:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:39,202 INFO L225 Difference]: With dead ends: 63 [2025-02-06 10:21:39,202 INFO L226 Difference]: Without dead ends: 63 [2025-02-06 10:21:39,203 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 [2025-02-06 10:21:39,203 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 [2025-02-06 10:21:39,203 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] [2025-02-06 10:21:39,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-06 10:21:39,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2025-02-06 10:21:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 58 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2025-02-06 10:21:39,206 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 18 [2025-02-06 10:21:39,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:39,206 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2025-02-06 10:21:39,206 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) [2025-02-06 10:21:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2025-02-06 10:21:39,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:21:39,207 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:39,207 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:39,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:39,407 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 [2025-02-06 10:21:39,407 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:39,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:39,408 INFO L85 PathProgramCache]: Analyzing trace with hash -124684021, now seen corresponding path program 1 times [2025-02-06 10:21:39,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:39,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979501761] [2025-02-06 10:21:39,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:39,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:39,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:21:39,424 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:39,424 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:39,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:39,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:39,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979501761] [2025-02-06 10:21:39,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979501761] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:39,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134231010] [2025-02-06 10:21:39,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:39,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:39,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:39,506 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:39,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 10:21:39,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:21:39,549 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:39,549 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:39,549 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:39,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:21:39,551 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:39,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:39,684 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:39,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134231010] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:39,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:39,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 12 [2025-02-06 10:21:39,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721743861] [2025-02-06 10:21:39,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:39,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:21:39,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:39,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:21:39,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=77, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:21:39,685 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:39,823 INFO L93 Difference]: Finished difference Result 121 states and 142 transitions. [2025-02-06 10:21:39,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:21:39,823 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-06 10:21:39,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:39,823 INFO L225 Difference]: With dead ends: 121 [2025-02-06 10:21:39,823 INFO L226 Difference]: Without dead ends: 121 [2025-02-06 10:21:39,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=121, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:39,824 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:39,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 64 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:39,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-02-06 10:21:39,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2025-02-06 10:21:39,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.290909090909091) internal successors, (142), 114 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 142 transitions. [2025-02-06 10:21:39,828 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 142 transitions. Word has length 21 [2025-02-06 10:21:39,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:39,828 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 142 transitions. [2025-02-06 10:21:39,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,828 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2025-02-06 10:21:39,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:21:39,829 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:39,829 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1] [2025-02-06 10:21:39,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:40,029 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 [2025-02-06 10:21:40,029 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:40,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:40,030 INFO L85 PathProgramCache]: Analyzing trace with hash 377987313, now seen corresponding path program 2 times [2025-02-06 10:21:40,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:40,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419904513] [2025-02-06 10:21:40,030 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:40,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:40,035 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 10:21:40,043 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:40,043 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:40,043 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:40,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419904513] [2025-02-06 10:21:40,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419904513] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854424849] [2025-02-06 10:21:40,118 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:40,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:40,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:40,121 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:40,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 10:21:40,151 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 10:21:40,161 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:40,161 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:40,161 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:40,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:21:40,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:40,223 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:40,224 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:21:40,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854424849] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:40,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:21:40,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2025-02-06 10:21:40,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239537809] [2025-02-06 10:21:40,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:40,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:21:40,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:40,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:21:40,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:21:40,225 INFO L87 Difference]: Start difference. First operand 115 states and 142 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:40,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:40,276 INFO L93 Difference]: Finished difference Result 105 states and 127 transitions. [2025-02-06 10:21:40,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:21:40,277 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 [2025-02-06 10:21:40,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:40,277 INFO L225 Difference]: With dead ends: 105 [2025-02-06 10:21:40,277 INFO L226 Difference]: Without dead ends: 105 [2025-02-06 10:21:40,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:40,277 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:40,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 30 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:40,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-02-06 10:21:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-02-06 10:21:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.27) internal successors, (127), 104 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 127 transitions. [2025-02-06 10:21:40,280 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 127 transitions. Word has length 21 [2025-02-06 10:21:40,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:40,280 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 127 transitions. [2025-02-06 10:21:40,281 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) [2025-02-06 10:21:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 127 transitions. [2025-02-06 10:21:40,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-06 10:21:40,281 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:40,281 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 10:21:40,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 10:21:40,481 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 [2025-02-06 10:21:40,481 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:40,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:40,482 INFO L85 PathProgramCache]: Analyzing trace with hash -871002062, now seen corresponding path program 1 times [2025-02-06 10:21:40,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:40,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009109575] [2025-02-06 10:21:40,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:40,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:40,489 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 10:21:40,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 10:21:40,495 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:40,495 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:40,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:40,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009109575] [2025-02-06 10:21:40,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009109575] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:40,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853300308] [2025-02-06 10:21:40,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:40,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:40,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:40,605 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) [2025-02-06 10:21:40,606 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 [2025-02-06 10:21:40,636 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 10:21:40,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 10:21:40,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:40,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:40,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 10:21:40,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:40,719 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:40,721 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:40,772 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:40,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853300308] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:40,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:40,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2025-02-06 10:21:40,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944005479] [2025-02-06 10:21:40,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:40,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:21:40,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:40,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:21:40,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:21:40,774 INFO L87 Difference]: Start difference. First operand 105 states and 127 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:40,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:40,898 INFO L93 Difference]: Finished difference Result 105 states and 124 transitions. [2025-02-06 10:21:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:21:40,898 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-02-06 10:21:40,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:40,898 INFO L225 Difference]: With dead ends: 105 [2025-02-06 10:21:40,898 INFO L226 Difference]: Without dead ends: 105 [2025-02-06 10:21:40,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:21:40,899 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 41 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:40,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 24 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-02-06 10:21:40,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-02-06 10:21:40,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.24) internal successors, (124), 104 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 124 transitions. [2025-02-06 10:21:40,906 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 124 transitions. Word has length 27 [2025-02-06 10:21:40,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:40,906 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 124 transitions. [2025-02-06 10:21:40,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:40,906 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 124 transitions. [2025-02-06 10:21:40,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-06 10:21:40,907 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:40,907 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 10:21:40,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:41,107 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 [2025-02-06 10:21:41,107 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:41,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:41,108 INFO L85 PathProgramCache]: Analyzing trace with hash 672985461, now seen corresponding path program 2 times [2025-02-06 10:21:41,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:41,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527571072] [2025-02-06 10:21:41,108 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:41,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:41,117 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-06 10:21:41,132 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 10:21:41,133 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:41,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:41,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:41,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527571072] [2025-02-06 10:21:41,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527571072] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:41,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551101718] [2025-02-06 10:21:41,367 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:41,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:41,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:41,369 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:41,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 10:21:41,404 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-06 10:21:41,419 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 10:21:41,419 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:41,419 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:41,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 10:21:41,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:41,453 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 [2025-02-06 10:21:41,459 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 [2025-02-06 10:21:41,465 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 [2025-02-06 10:21:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:41,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:41,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551101718] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:41,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:41,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 3] total 11 [2025-02-06 10:21:41,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145543859] [2025-02-06 10:21:41,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:41,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:21:41,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:41,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:21:41,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:21:41,711 INFO L87 Difference]: Start difference. First operand 105 states and 124 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 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) [2025-02-06 10:21:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:41,831 INFO L93 Difference]: Finished difference Result 131 states and 144 transitions. [2025-02-06 10:21:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:21:41,831 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 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) Word has length 31 [2025-02-06 10:21:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:41,832 INFO L225 Difference]: With dead ends: 131 [2025-02-06 10:21:41,832 INFO L226 Difference]: Without dead ends: 131 [2025-02-06 10:21:41,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:41,833 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 79 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:41,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 66 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-02-06 10:21:41,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2025-02-06 10:21:41,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 101 states have (on average 1.188118811881188) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2025-02-06 10:21:41,839 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 31 [2025-02-06 10:21:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:41,839 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2025-02-06 10:21:41,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 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) [2025-02-06 10:21:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2025-02-06 10:21:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 10:21:41,839 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:41,839 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:41,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 10:21:42,040 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 [2025-02-06 10:21:42,040 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:42,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash 209571612, now seen corresponding path program 1 times [2025-02-06 10:21:42,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:42,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503357931] [2025-02-06 10:21:42,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:42,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:42,047 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:21:42,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:21:42,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:42,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 53 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:42,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503357931] [2025-02-06 10:21:42,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503357931] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:42,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225204923] [2025-02-06 10:21:42,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:42,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:42,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:42,154 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:42,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 10:21:42,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:21:42,202 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:21:42,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:42,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:42,203 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:21:42,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 42 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 10:21:42,291 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 42 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 10:21:42,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225204923] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:42,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:42,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2025-02-06 10:21:42,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156627044] [2025-02-06 10:21:42,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:42,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 10:21:42,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:42,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 10:21:42,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:42,353 INFO L87 Difference]: Start difference. First operand 105 states and 120 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) [2025-02-06 10:21:42,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:42,464 INFO L93 Difference]: Finished difference Result 99 states and 110 transitions. [2025-02-06 10:21:42,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:21:42,465 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 [2025-02-06 10:21:42,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:42,465 INFO L225 Difference]: With dead ends: 99 [2025-02-06 10:21:42,465 INFO L226 Difference]: Without dead ends: 99 [2025-02-06 10:21:42,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2025-02-06 10:21:42,466 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:42,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 41 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:42,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-02-06 10:21:42,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2025-02-06 10:21:42,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 98 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:42,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2025-02-06 10:21:42,468 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 34 [2025-02-06 10:21:42,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:42,468 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2025-02-06 10:21:42,468 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) [2025-02-06 10:21:42,468 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2025-02-06 10:21:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-06 10:21:42,469 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:42,469 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 3, 2, 2, 2, 2, 1, 1, 1] [2025-02-06 10:21:42,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:42,673 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 [2025-02-06 10:21:42,673 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:42,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash 341336212, now seen corresponding path program 2 times [2025-02-06 10:21:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941362520] [2025-02-06 10:21:42,673 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:42,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:42,684 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-02-06 10:21:42,692 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 10:21:42,692 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:42,692 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:42,881 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 24 proven. 144 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:42,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:42,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941362520] [2025-02-06 10:21:42,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941362520] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:42,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390075987] [2025-02-06 10:21:42,881 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:42,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:42,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:42,885 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:42,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 10:21:42,926 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-02-06 10:21:42,949 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 10:21:42,949 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:42,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:42,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 10:21:42,952 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 37 proven. 131 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:43,080 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 37 proven. 131 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:43,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390075987] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:43,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:43,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 18 [2025-02-06 10:21:43,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833318050] [2025-02-06 10:21:43,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:43,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 10:21:43,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:43,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 10:21:43,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:21:43,180 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:43,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:43,369 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2025-02-06 10:21:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 10:21:43,369 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-02-06 10:21:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:43,370 INFO L225 Difference]: With dead ends: 97 [2025-02-06 10:21:43,370 INFO L226 Difference]: Without dead ends: 97 [2025-02-06 10:21:43,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 89 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2025-02-06 10:21:43,371 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 22 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:43,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 49 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-02-06 10:21:43,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2025-02-06 10:21:43,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 93 states have (on average 1.1290322580645162) internal successors, (105), 96 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 105 transitions. [2025-02-06 10:21:43,373 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 105 transitions. Word has length 51 [2025-02-06 10:21:43,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:43,373 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 105 transitions. [2025-02-06 10:21:43,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:43,373 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 105 transitions. [2025-02-06 10:21:43,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-06 10:21:43,375 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:43,375 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 4, 3, 3, 3, 3, 1, 1, 1] [2025-02-06 10:21:43,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:43,575 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 [2025-02-06 10:21:43,575 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:43,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:43,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1093922332, now seen corresponding path program 3 times [2025-02-06 10:21:43,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:43,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155532790] [2025-02-06 10:21:43,576 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:43,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:43,584 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 68 statements into 11 equivalence classes. [2025-02-06 10:21:43,600 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 68 statements. [2025-02-06 10:21:43,600 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-06 10:21:43,600 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 159 proven. 32 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-02-06 10:21:43,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:43,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155532790] [2025-02-06 10:21:43,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155532790] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:43,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505657635] [2025-02-06 10:21:43,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:43,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:43,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:43,658 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:43,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 10:21:43,703 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 68 statements into 11 equivalence classes. [2025-02-06 10:21:43,731 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 38 of 68 statements. [2025-02-06 10:21:43,731 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-02-06 10:21:43,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:43,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 10:21:43,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:43,758 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 159 proven. 32 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-02-06 10:21:43,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:43,846 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 159 proven. 32 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2025-02-06 10:21:43,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505657635] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:43,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:43,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-06 10:21:43,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586892954] [2025-02-06 10:21:43,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:43,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:21:43,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:43,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:21:43,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:21:43,849 INFO L87 Difference]: Start difference. First operand 97 states and 105 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 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) [2025-02-06 10:21:44,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:44,014 INFO L93 Difference]: Finished difference Result 120 states and 139 transitions. [2025-02-06 10:21:44,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:21:44,015 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 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 68 [2025-02-06 10:21:44,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:44,015 INFO L225 Difference]: With dead ends: 120 [2025-02-06 10:21:44,015 INFO L226 Difference]: Without dead ends: 120 [2025-02-06 10:21:44,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:21:44,016 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:44,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 94 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:44,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-02-06 10:21:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-02-06 10:21:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.1982758620689655) internal successors, (139), 119 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:44,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2025-02-06 10:21:44,018 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 68 [2025-02-06 10:21:44,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:44,018 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2025-02-06 10:21:44,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 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) [2025-02-06 10:21:44,018 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2025-02-06 10:21:44,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-06 10:21:44,021 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:44,021 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 4, 3, 3, 3, 3, 1, 1, 1] [2025-02-06 10:21:44,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 10:21:44,222 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 [2025-02-06 10:21:44,222 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:44,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:44,222 INFO L85 PathProgramCache]: Analyzing trace with hash -448146081, now seen corresponding path program 1 times [2025-02-06 10:21:44,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:44,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467749300] [2025-02-06 10:21:44,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:44,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:44,230 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 10:21:44,241 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 10:21:44,244 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:44,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 177 proven. 123 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-06 10:21:44,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:44,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467749300] [2025-02-06 10:21:44,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467749300] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:44,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661496695] [2025-02-06 10:21:44,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:44,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:44,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:44,381 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:44,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 10:21:44,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 10:21:44,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 10:21:44,450 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:44,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:44,451 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:21:44,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 212 proven. 88 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-06 10:21:44,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 212 proven. 88 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-06 10:21:44,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661496695] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:44,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:44,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-02-06 10:21:44,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327230167] [2025-02-06 10:21:44,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:44,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 10:21:44,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:44,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 10:21:44,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:44,625 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:44,804 INFO L93 Difference]: Finished difference Result 120 states and 137 transitions. [2025-02-06 10:21:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:21:44,805 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-02-06 10:21:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:44,805 INFO L225 Difference]: With dead ends: 120 [2025-02-06 10:21:44,806 INFO L226 Difference]: Without dead ends: 120 [2025-02-06 10:21:44,806 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 127 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:21:44,806 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:44,807 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 36 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:44,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-02-06 10:21:44,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2025-02-06 10:21:44,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.1810344827586208) internal successors, (137), 119 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:44,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 137 transitions. [2025-02-06 10:21:44,809 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 137 transitions. Word has length 69 [2025-02-06 10:21:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:44,810 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 137 transitions. [2025-02-06 10:21:44,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 15 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 137 transitions. [2025-02-06 10:21:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-02-06 10:21:44,811 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:44,811 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 4, 3, 3, 3, 3, 1, 1, 1] [2025-02-06 10:21:44,817 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 [2025-02-06 10:21:45,011 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 [2025-02-06 10:21:45,011 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:45,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:45,012 INFO L85 PathProgramCache]: Analyzing trace with hash -598484612, now seen corresponding path program 2 times [2025-02-06 10:21:45,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:45,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940032765] [2025-02-06 10:21:45,012 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:45,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:45,019 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 73 statements into 2 equivalence classes. [2025-02-06 10:21:45,033 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 73 of 73 statements. [2025-02-06 10:21:45,033 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:45,033 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 15 proven. 347 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-06 10:21:45,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:45,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940032765] [2025-02-06 10:21:45,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940032765] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:45,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185442340] [2025-02-06 10:21:45,397 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:45,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:45,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:45,399 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:45,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 10:21:45,451 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 73 statements into 2 equivalence classes. [2025-02-06 10:21:45,478 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 73 of 73 statements. [2025-02-06 10:21:45,478 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:45,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:45,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-06 10:21:45,482 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:45,492 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 [2025-02-06 10:21:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-02-06 10:21:45,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:46,047 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-02-06 10:21:46,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185442340] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:46,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:46,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 24 [2025-02-06 10:21:46,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903772942] [2025-02-06 10:21:46,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:46,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:21:46,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:46,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:21:46,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:21:46,048 INFO L87 Difference]: Start difference. First operand 120 states and 137 transitions. Second operand has 25 states, 24 states have (on average 4.541666666666667) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:46,802 INFO L93 Difference]: Finished difference Result 166 states and 185 transitions. [2025-02-06 10:21:46,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-06 10:21:46,802 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.541666666666667) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2025-02-06 10:21:46,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:46,803 INFO L225 Difference]: With dead ends: 166 [2025-02-06 10:21:46,803 INFO L226 Difference]: Without dead ends: 166 [2025-02-06 10:21:46,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=626, Invalid=2130, Unknown=0, NotChecked=0, Total=2756 [2025-02-06 10:21:46,804 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 46 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:46,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 77 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:46,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2025-02-06 10:21:46,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2025-02-06 10:21:46,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 134 states have (on average 1.126865671641791) internal successors, (151), 137 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 151 transitions. [2025-02-06 10:21:46,807 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 151 transitions. Word has length 73 [2025-02-06 10:21:46,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:46,807 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 151 transitions. [2025-02-06 10:21:46,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.541666666666667) internal successors, (109), 25 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,807 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 151 transitions. [2025-02-06 10:21:46,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2025-02-06 10:21:46,809 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:46,809 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:46,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:47,010 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 [2025-02-06 10:21:47,010 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:47,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:47,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1717754803, now seen corresponding path program 2 times [2025-02-06 10:21:47,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:47,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257013821] [2025-02-06 10:21:47,011 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:47,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:47,020 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 80 statements into 2 equivalence classes. [2025-02-06 10:21:47,022 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 80 statements. [2025-02-06 10:21:47,022 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:47,022 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 398 trivial. 0 not checked. [2025-02-06 10:21:47,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:47,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257013821] [2025-02-06 10:21:47,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257013821] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:47,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:47,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:47,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866142299] [2025-02-06 10:21:47,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:47,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:47,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:47,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:47,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:47,068 INFO L87 Difference]: Start difference. First operand 138 states and 151 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) [2025-02-06 10:21:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:47,084 INFO L93 Difference]: Finished difference Result 137 states and 150 transitions. [2025-02-06 10:21:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:47,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2025-02-06 10:21:47,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:47,085 INFO L225 Difference]: With dead ends: 137 [2025-02-06 10:21:47,085 INFO L226 Difference]: Without dead ends: 135 [2025-02-06 10:21:47,085 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 [2025-02-06 10:21:47,085 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:47,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 26 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:47,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2025-02-06 10:21:47,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2025-02-06 10:21:47,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 132 states have (on average 1.0909090909090908) internal successors, (144), 134 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) [2025-02-06 10:21:47,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 144 transitions. [2025-02-06 10:21:47,089 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 144 transitions. Word has length 80 [2025-02-06 10:21:47,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:47,089 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 144 transitions. [2025-02-06 10:21:47,089 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) [2025-02-06 10:21:47,089 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 144 transitions. [2025-02-06 10:21:47,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2025-02-06 10:21:47,091 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:47,091 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2025-02-06 10:21:47,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-06 10:21:47,091 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:47,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:47,091 INFO L85 PathProgramCache]: Analyzing trace with hash -935562351, now seen corresponding path program 1 times [2025-02-06 10:21:47,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:47,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880820717] [2025-02-06 10:21:47,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:47,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:47,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-02-06 10:21:47,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-02-06 10:21:47,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:47,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:47,357 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 161 proven. 202 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-02-06 10:21:47,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:47,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880820717] [2025-02-06 10:21:47,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880820717] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:47,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283420940] [2025-02-06 10:21:47,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:47,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:47,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:47,359 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:47,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 10:21:47,418 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 89 statements into 1 equivalence classes. [2025-02-06 10:21:47,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 89 of 89 statements. [2025-02-06 10:21:47,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:47,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:47,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 10:21:47,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:47,595 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 153 proven. 196 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-06 10:21:47,596 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 153 proven. 196 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-06 10:21:47,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283420940] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:47,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:47,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 25 [2025-02-06 10:21:47,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243082088] [2025-02-06 10:21:47,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:47,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:21:47,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:47,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:21:47,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:21:47,758 INFO L87 Difference]: Start difference. First operand 135 states and 144 transitions. Second operand has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:48,212 INFO L93 Difference]: Finished difference Result 142 states and 150 transitions. [2025-02-06 10:21:48,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 10:21:48,214 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 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 89 [2025-02-06 10:21:48,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:48,215 INFO L225 Difference]: With dead ends: 142 [2025-02-06 10:21:48,215 INFO L226 Difference]: Without dead ends: 142 [2025-02-06 10:21:48,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 163 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=413, Invalid=1479, Unknown=0, NotChecked=0, Total=1892 [2025-02-06 10:21:48,217 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 51 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:48,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 21 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:48,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-02-06 10:21:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 139. [2025-02-06 10:21:48,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 136 states have (on average 1.0808823529411764) internal successors, (147), 138 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 147 transitions. [2025-02-06 10:21:48,219 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 147 transitions. Word has length 89 [2025-02-06 10:21:48,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:48,219 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 147 transitions. [2025-02-06 10:21:48,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.6) internal successors, (115), 25 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 147 transitions. [2025-02-06 10:21:48,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 10:21:48,223 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:48,223 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2025-02-06 10:21:48,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 10:21:48,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2025-02-06 10:21:48,428 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:48,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:48,428 INFO L85 PathProgramCache]: Analyzing trace with hash 146810196, now seen corresponding path program 2 times [2025-02-06 10:21:48,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:48,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403364332] [2025-02-06 10:21:48,428 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:48,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:48,437 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-02-06 10:21:48,450 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:21:48,451 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:48,451 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:48,605 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2025-02-06 10:21:48,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:48,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403364332] [2025-02-06 10:21:48,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403364332] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:48,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489092294] [2025-02-06 10:21:48,607 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:48,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:48,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:48,609 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:48,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 10:21:48,665 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 93 statements into 2 equivalence classes. [2025-02-06 10:21:48,698 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:21:48,698 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:48,698 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:48,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:21:48,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:48,830 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 0 proven. 405 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-06 10:21:48,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 13 proven. 392 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2025-02-06 10:21:49,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489092294] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:49,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:49,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 12] total 24 [2025-02-06 10:21:49,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344274433] [2025-02-06 10:21:49,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:49,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 10:21:49,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:49,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 10:21:49,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2025-02-06 10:21:49,101 INFO L87 Difference]: Start difference. First operand 139 states and 147 transitions. Second operand has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:49,405 INFO L93 Difference]: Finished difference Result 408 states and 451 transitions. [2025-02-06 10:21:49,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 10:21:49,405 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2025-02-06 10:21:49,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:49,407 INFO L225 Difference]: With dead ends: 408 [2025-02-06 10:21:49,407 INFO L226 Difference]: Without dead ends: 408 [2025-02-06 10:21:49,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=283, Invalid=473, Unknown=0, NotChecked=0, Total=756 [2025-02-06 10:21:49,407 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 208 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:49,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 174 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:49,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2025-02-06 10:21:49,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 378. [2025-02-06 10:21:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 375 states have (on average 1.136) internal successors, (426), 377 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:49,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 426 transitions. [2025-02-06 10:21:49,416 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 426 transitions. Word has length 93 [2025-02-06 10:21:49,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:49,416 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 426 transitions. [2025-02-06 10:21:49,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:49,417 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 426 transitions. [2025-02-06 10:21:49,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2025-02-06 10:21:49,417 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:49,417 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 5, 4, 4, 4, 4, 1, 1, 1] [2025-02-06 10:21:49,423 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 [2025-02-06 10:21:49,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:49,618 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:49,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:49,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2053026661, now seen corresponding path program 4 times [2025-02-06 10:21:49,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:49,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662059696] [2025-02-06 10:21:49,618 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:21:49,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:49,632 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 121 statements into 2 equivalence classes. [2025-02-06 10:21:49,661 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 121 of 121 statements. [2025-02-06 10:21:49,661 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:21:49,661 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 273 proven. 918 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:21:49,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:49,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662059696] [2025-02-06 10:21:49,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662059696] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:49,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671637128] [2025-02-06 10:21:49,897 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:21:49,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:49,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:49,899 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:49,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 10:21:49,963 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 121 statements into 2 equivalence classes. [2025-02-06 10:21:50,018 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 121 of 121 statements. [2025-02-06 10:21:50,019 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:21:50,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:50,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 10:21:50,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:50,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 214 proven. 978 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-02-06 10:21:50,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:50,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1286 backedges. 214 proven. 978 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-02-06 10:21:50,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671637128] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:50,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:50,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 36 [2025-02-06 10:21:50,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281608961] [2025-02-06 10:21:50,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:50,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 10:21:50,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:50,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 10:21:50,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=900, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 10:21:50,529 INFO L87 Difference]: Start difference. First operand 378 states and 426 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) [2025-02-06 10:21:51,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:51,326 INFO L93 Difference]: Finished difference Result 344 states and 371 transitions. [2025-02-06 10:21:51,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-02-06 10:21:51,327 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.944444444444445) internal successors, (178), 36 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2025-02-06 10:21:51,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:51,328 INFO L225 Difference]: With dead ends: 344 [2025-02-06 10:21:51,328 INFO L226 Difference]: Without dead ends: 344 [2025-02-06 10:21:51,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 215 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4061 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2687, Invalid=7015, Unknown=0, NotChecked=0, Total=9702 [2025-02-06 10:21:51,331 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 46 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:51,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 41 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:21:51,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2025-02-06 10:21:51,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 328. [2025-02-06 10:21:51,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 325 states have (on average 1.0769230769230769) internal successors, (350), 327 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:51,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 350 transitions. [2025-02-06 10:21:51,336 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 350 transitions. Word has length 121 [2025-02-06 10:21:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:51,336 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 350 transitions. [2025-02-06 10:21:51,337 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) [2025-02-06 10:21:51,337 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 350 transitions. [2025-02-06 10:21:51,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2025-02-06 10:21:51,346 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:51,346 INFO L218 NwaCegarLoop]: trace histogram [44, 44, 44, 44, 10, 10, 10, 10, 10, 5, 4, 4, 1, 1, 1, 1] [2025-02-06 10:21:51,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:51,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:51,547 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:51,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash 266087508, now seen corresponding path program 3 times [2025-02-06 10:21:51,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:51,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158663176] [2025-02-06 10:21:51,547 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:51,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:51,566 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 243 statements into 33 equivalence classes. [2025-02-06 10:21:51,571 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 243 statements. [2025-02-06 10:21:51,571 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:21:51,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:51,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4485 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4474 trivial. 0 not checked. [2025-02-06 10:21:51,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:51,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158663176] [2025-02-06 10:21:51,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158663176] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:51,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:51,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:21:51,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307041891] [2025-02-06 10:21:51,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:51,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:21:51,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:51,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:21:51,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:21:51,650 INFO L87 Difference]: Start difference. First operand 328 states and 350 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) [2025-02-06 10:21:51,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:51,674 INFO L93 Difference]: Finished difference Result 327 states and 349 transitions. [2025-02-06 10:21:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:21:51,675 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 243 [2025-02-06 10:21:51,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:51,676 INFO L225 Difference]: With dead ends: 327 [2025-02-06 10:21:51,676 INFO L226 Difference]: Without dead ends: 313 [2025-02-06 10:21:51,676 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 [2025-02-06 10:21:51,676 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 19 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:51,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 26 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:51,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2025-02-06 10:21:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 309. [2025-02-06 10:21:51,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 1.0749185667752443) internal successors, (330), 308 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:51,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 330 transitions. [2025-02-06 10:21:51,685 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 330 transitions. Word has length 243 [2025-02-06 10:21:51,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:51,685 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 330 transitions. [2025-02-06 10:21:51,685 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) [2025-02-06 10:21:51,685 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 330 transitions. [2025-02-06 10:21:51,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2025-02-06 10:21:51,687 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:51,687 INFO L218 NwaCegarLoop]: trace histogram [50, 49, 49, 49, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:21:51,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-06 10:21:51,687 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:51,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:51,688 INFO L85 PathProgramCache]: Analyzing trace with hash -79482611, now seen corresponding path program 5 times [2025-02-06 10:21:51,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:51,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546810993] [2025-02-06 10:21:51,688 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:21:51,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:51,706 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 246 statements into 28 equivalence classes. [2025-02-06 10:21:51,777 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 128 of 246 statements. [2025-02-06 10:21:51,778 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-02-06 10:21:51,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5441 backedges. 3018 proven. 351 refuted. 0 times theorem prover too weak. 2072 trivial. 0 not checked. [2025-02-06 10:21:52,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:52,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546810993] [2025-02-06 10:21:52,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546810993] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:52,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100252068] [2025-02-06 10:21:52,173 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:21:52,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:52,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:52,175 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:52,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 10:21:52,273 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 246 statements into 28 equivalence classes. [2025-02-06 10:21:52,338 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 128 of 246 statements. [2025-02-06 10:21:52,338 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-02-06 10:21:52,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:52,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:21:52,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5441 backedges. 2980 proven. 411 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2025-02-06 10:21:52,562 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5441 backedges. 3076 proven. 315 refuted. 0 times theorem prover too weak. 2050 trivial. 0 not checked. [2025-02-06 10:21:52,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100252068] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:52,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:52,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 15] total 32 [2025-02-06 10:21:52,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719003629] [2025-02-06 10:21:52,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:52,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-06 10:21:52,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:52,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-06 10:21:52,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2025-02-06 10:21:52,755 INFO L87 Difference]: Start difference. First operand 309 states and 330 transitions. Second operand has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:53,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:53,251 INFO L93 Difference]: Finished difference Result 309 states and 324 transitions. [2025-02-06 10:21:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-06 10:21:53,251 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 246 [2025-02-06 10:21:53,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:53,252 INFO L225 Difference]: With dead ends: 309 [2025-02-06 10:21:53,252 INFO L226 Difference]: Without dead ends: 309 [2025-02-06 10:21:53,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 470 SyntacticMatches, 9 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=745, Invalid=2677, Unknown=0, NotChecked=0, Total=3422 [2025-02-06 10:21:53,254 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 52 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:53,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 23 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:53,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2025-02-06 10:21:53,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2025-02-06 10:21:53,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 1.0553745928338762) internal successors, (324), 308 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:53,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 324 transitions. [2025-02-06 10:21:53,257 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 324 transitions. Word has length 246 [2025-02-06 10:21:53,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:53,257 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 324 transitions. [2025-02-06 10:21:53,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:53,258 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 324 transitions. [2025-02-06 10:21:53,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2025-02-06 10:21:53,259 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:53,259 INFO L218 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:21:53,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:53,459 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 [2025-02-06 10:21:53,460 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:53,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:53,460 INFO L85 PathProgramCache]: Analyzing trace with hash 322327824, now seen corresponding path program 6 times [2025-02-06 10:21:53,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:53,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773745518] [2025-02-06 10:21:53,460 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:21:53,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:53,479 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 266 statements into 33 equivalence classes. [2025-02-06 10:21:53,566 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) and asserted 142 of 266 statements. [2025-02-06 10:21:53,567 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2025-02-06 10:21:53,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6516 backedges. 2892 proven. 360 refuted. 0 times theorem prover too weak. 3264 trivial. 0 not checked. [2025-02-06 10:21:53,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:53,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773745518] [2025-02-06 10:21:53,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773745518] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:53,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91234026] [2025-02-06 10:21:53,920 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:21:53,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:53,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:53,922 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:53,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 10:21:54,017 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 266 statements into 33 equivalence classes. [2025-02-06 10:21:54,178 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) and asserted 142 of 266 statements. [2025-02-06 10:21:54,178 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2025-02-06 10:21:54,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:54,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 10:21:54,183 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6516 backedges. 1165 proven. 2066 refuted. 0 times theorem prover too weak. 3285 trivial. 0 not checked. [2025-02-06 10:21:54,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:55,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6516 backedges. 126 proven. 3105 refuted. 0 times theorem prover too weak. 3285 trivial. 0 not checked. [2025-02-06 10:21:55,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91234026] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:55,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:55,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 21] total 52 [2025-02-06 10:21:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633419347] [2025-02-06 10:21:55,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:55,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-06 10:21:55,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:55,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-06 10:21:55,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=2278, Unknown=0, NotChecked=0, Total=2652 [2025-02-06 10:21:55,184 INFO L87 Difference]: Start difference. First operand 309 states and 324 transitions. Second operand has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 52 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:55,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:55,481 INFO L93 Difference]: Finished difference Result 450 states and 469 transitions. [2025-02-06 10:21:55,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 10:21:55,481 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 52 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2025-02-06 10:21:55,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:55,483 INFO L225 Difference]: With dead ends: 450 [2025-02-06 10:21:55,483 INFO L226 Difference]: Without dead ends: 450 [2025-02-06 10:21:55,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 494 SyntacticMatches, 8 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1567 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=726, Invalid=3306, Unknown=0, NotChecked=0, Total=4032 [2025-02-06 10:21:55,484 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 139 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:55,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 35 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:55,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2025-02-06 10:21:55,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 396. [2025-02-06 10:21:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 394 states have (on average 1.0507614213197969) internal successors, (414), 395 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 414 transitions. [2025-02-06 10:21:55,489 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 414 transitions. Word has length 266 [2025-02-06 10:21:55,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:55,490 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 414 transitions. [2025-02-06 10:21:55,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.673076923076923) internal successors, (191), 52 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:55,490 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 414 transitions. [2025-02-06 10:21:55,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2025-02-06 10:21:55,491 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:55,492 INFO L218 NwaCegarLoop]: trace histogram [56, 55, 55, 55, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:21:55,499 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 10:21:55,692 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 [2025-02-06 10:21:55,692 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:55,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:55,693 INFO L85 PathProgramCache]: Analyzing trace with hash 784035155, now seen corresponding path program 7 times [2025-02-06 10:21:55,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:55,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545336020] [2025-02-06 10:21:55,693 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 10:21:55,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:55,709 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 270 statements into 1 equivalence classes. [2025-02-06 10:21:55,738 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 270 of 270 statements. [2025-02-06 10:21:55,738 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:55,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:56,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6743 backedges. 4205 proven. 484 refuted. 0 times theorem prover too weak. 2054 trivial. 0 not checked. [2025-02-06 10:21:56,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545336020] [2025-02-06 10:21:56,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545336020] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:56,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708335725] [2025-02-06 10:21:56,221 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 10:21:56,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:56,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:56,226 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:56,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 10:21:56,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 270 statements into 1 equivalence classes. [2025-02-06 10:21:56,447 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 270 of 270 statements. [2025-02-06 10:21:56,447 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:56,447 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:56,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 1050 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:21:56,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:56,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6743 backedges. 4183 proven. 601 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2025-02-06 10:21:56,733 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6743 backedges. 4183 proven. 601 refuted. 0 times theorem prover too weak. 1959 trivial. 0 not checked. [2025-02-06 10:21:57,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708335725] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:57,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:57,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 15] total 35 [2025-02-06 10:21:57,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65773740] [2025-02-06 10:21:57,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:57,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-06 10:21:57,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:57,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-06 10:21:57,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=964, Unknown=0, NotChecked=0, Total=1190 [2025-02-06 10:21:57,021 INFO L87 Difference]: Start difference. First operand 396 states and 414 transitions. Second operand has 35 states, 35 states have (on average 4.771428571428571) internal successors, (167), 35 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:57,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:57,785 INFO L93 Difference]: Finished difference Result 309 states and 319 transitions. [2025-02-06 10:21:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-02-06 10:21:57,786 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.771428571428571) internal successors, (167), 35 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 270 [2025-02-06 10:21:57,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:57,786 INFO L225 Difference]: With dead ends: 309 [2025-02-06 10:21:57,786 INFO L226 Difference]: Without dead ends: 309 [2025-02-06 10:21:57,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 517 SyntacticMatches, 6 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=920, Invalid=3772, Unknown=0, NotChecked=0, Total=4692 [2025-02-06 10:21:57,787 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 57 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:57,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 30 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1225 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 10:21:57,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2025-02-06 10:21:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2025-02-06 10:21:57,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 1.0390879478827362) internal successors, (319), 308 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 319 transitions. [2025-02-06 10:21:57,791 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 319 transitions. Word has length 270 [2025-02-06 10:21:57,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:57,791 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 319 transitions. [2025-02-06 10:21:57,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.771428571428571) internal successors, (167), 35 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:57,791 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 319 transitions. [2025-02-06 10:21:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2025-02-06 10:21:57,793 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:57,793 INFO L218 NwaCegarLoop]: trace histogram [59, 58, 58, 58, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:21:57,804 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 10:21:57,993 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 [2025-02-06 10:21:57,993 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:57,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1307798224, now seen corresponding path program 8 times [2025-02-06 10:21:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:57,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12216614] [2025-02-06 10:21:57,994 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:57,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:58,017 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 282 statements into 2 equivalence classes. [2025-02-06 10:21:58,040 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 282 of 282 statements. [2025-02-06 10:21:58,041 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:58,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7448 backedges. 4997 proven. 890 refuted. 0 times theorem prover too weak. 1561 trivial. 0 not checked. [2025-02-06 10:21:58,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12216614] [2025-02-06 10:21:58,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12216614] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:58,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743948314] [2025-02-06 10:21:58,591 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:58,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:58,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:58,593 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:58,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 10:21:58,704 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 282 statements into 2 equivalence classes. [2025-02-06 10:21:58,776 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 282 of 282 statements. [2025-02-06 10:21:58,776 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:58,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:58,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 1089 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:21:58,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:59,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7448 backedges. 5060 proven. 922 refuted. 0 times theorem prover too weak. 1466 trivial. 0 not checked. [2025-02-06 10:21:59,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:59,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7448 backedges. 5060 proven. 922 refuted. 0 times theorem prover too weak. 1466 trivial. 0 not checked. [2025-02-06 10:21:59,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743948314] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:59,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:59,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 17] total 39 [2025-02-06 10:21:59,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814129965] [2025-02-06 10:21:59,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:59,325 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-02-06 10:21:59,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:59,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-02-06 10:21:59,326 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=1203, Unknown=0, NotChecked=0, Total=1482 [2025-02-06 10:21:59,326 INFO L87 Difference]: Start difference. First operand 309 states and 319 transitions. Second operand has 39 states, 39 states have (on average 4.82051282051282) internal successors, (188), 39 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:00,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:00,366 INFO L93 Difference]: Finished difference Result 309 states and 315 transitions. [2025-02-06 10:22:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-02-06 10:22:00,366 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.82051282051282) internal successors, (188), 39 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2025-02-06 10:22:00,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:00,367 INFO L225 Difference]: With dead ends: 309 [2025-02-06 10:22:00,367 INFO L226 Difference]: Without dead ends: 309 [2025-02-06 10:22:00,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 625 GetRequests, 538 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1548 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1302, Invalid=5340, Unknown=0, NotChecked=0, Total=6642 [2025-02-06 10:22:00,369 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 59 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:00,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 33 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1677 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 10:22:00,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2025-02-06 10:22:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2025-02-06 10:22:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 1.0260586319218241) internal successors, (315), 308 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 315 transitions. [2025-02-06 10:22:00,373 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 315 transitions. Word has length 282 [2025-02-06 10:22:00,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:00,373 INFO L471 AbstractCegarLoop]: Abstraction has 309 states and 315 transitions. [2025-02-06 10:22:00,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.82051282051282) internal successors, (188), 39 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:00,373 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 315 transitions. [2025-02-06 10:22:00,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2025-02-06 10:22:00,375 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:00,375 INFO L218 NwaCegarLoop]: trace histogram [62, 61, 61, 61, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:22:00,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-06 10:22:00,576 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 [2025-02-06 10:22:00,576 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:00,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:00,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1240935731, now seen corresponding path program 9 times [2025-02-06 10:22:00,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:00,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054308445] [2025-02-06 10:22:00,577 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:00,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:00,597 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 294 statements into 33 equivalence classes. [2025-02-06 10:22:00,659 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 91 of 294 statements. [2025-02-06 10:22:00,659 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 10:22:00,659 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:00,804 INFO L134 CoverageAnalysis]: Checked inductivity of 8189 backedges. 2241 proven. 200 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2025-02-06 10:22:00,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:00,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054308445] [2025-02-06 10:22:00,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054308445] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:00,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801535853] [2025-02-06 10:22:00,805 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:00,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:00,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:00,807 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) [2025-02-06 10:22:00,808 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 [2025-02-06 10:22:00,922 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 294 statements into 33 equivalence classes. [2025-02-06 10:22:00,971 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 91 of 294 statements. [2025-02-06 10:22:00,971 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 10:22:00,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:00,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 10:22:00,975 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8189 backedges. 2241 proven. 200 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2025-02-06 10:22:01,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 8189 backedges. 2241 proven. 200 refuted. 0 times theorem prover too weak. 5748 trivial. 0 not checked. [2025-02-06 10:22:01,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801535853] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:01,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2025-02-06 10:22:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292117912] [2025-02-06 10:22:01,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:01,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:22:01,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:01,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:22:01,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:22:01,246 INFO L87 Difference]: Start difference. First operand 309 states and 315 transitions. Second operand has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:03,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:03,444 INFO L93 Difference]: Finished difference Result 356 states and 385 transitions. [2025-02-06 10:22:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 10:22:03,444 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 294 [2025-02-06 10:22:03,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:03,445 INFO L225 Difference]: With dead ends: 356 [2025-02-06 10:22:03,445 INFO L226 Difference]: Without dead ends: 356 [2025-02-06 10:22:03,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 575 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2025-02-06 10:22:03,446 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 26 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:03,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 51 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:22:03,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2025-02-06 10:22:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2025-02-06 10:22:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 354 states have (on average 1.0875706214689265) internal successors, (385), 355 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 385 transitions. [2025-02-06 10:22:03,450 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 385 transitions. Word has length 294 [2025-02-06 10:22:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:03,450 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 385 transitions. [2025-02-06 10:22:03,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:03,450 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 385 transitions. [2025-02-06 10:22:03,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2025-02-06 10:22:03,451 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:03,451 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 61, 61, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:22:03,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-06 10:22:03,651 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 [2025-02-06 10:22:03,652 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:03,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:03,652 INFO L85 PathProgramCache]: Analyzing trace with hash -185698008, now seen corresponding path program 3 times [2025-02-06 10:22:03,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:03,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558317475] [2025-02-06 10:22:03,652 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:03,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:03,674 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 295 statements into 33 equivalence classes. [2025-02-06 10:22:03,677 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 295 statements. [2025-02-06 10:22:03,678 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:22:03,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:03,757 INFO L134 CoverageAnalysis]: Checked inductivity of 8250 backedges. 0 proven. 2331 refuted. 0 times theorem prover too weak. 5919 trivial. 0 not checked. [2025-02-06 10:22:03,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:03,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558317475] [2025-02-06 10:22:03,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558317475] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:03,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897798968] [2025-02-06 10:22:03,757 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:03,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:03,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:03,759 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) [2025-02-06 10:22:03,771 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 [2025-02-06 10:22:03,895 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 295 statements into 33 equivalence classes. [2025-02-06 10:22:03,903 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 15 of 295 statements. [2025-02-06 10:22:03,903 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:22:03,903 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:03,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 10:22:03,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:03,911 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 [2025-02-06 10:22:03,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:22:03,919 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 [2025-02-06 10:22:04,674 INFO L134 CoverageAnalysis]: Checked inductivity of 8250 backedges. 39 proven. 2292 refuted. 0 times theorem prover too weak. 5919 trivial. 0 not checked. [2025-02-06 10:22:04,674 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:05,642 INFO L134 CoverageAnalysis]: Checked inductivity of 8250 backedges. 0 proven. 2331 refuted. 0 times theorem prover too weak. 5919 trivial. 0 not checked. [2025-02-06 10:22:05,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897798968] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:05,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:05,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2025-02-06 10:22:05,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952771646] [2025-02-06 10:22:05,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:05,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 10:22:05,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:05,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 10:22:05,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:22:05,644 INFO L87 Difference]: Start difference. First operand 356 states and 385 transitions. Second operand has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:05,700 INFO L93 Difference]: Finished difference Result 355 states and 373 transitions. [2025-02-06 10:22:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:22:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 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 295 [2025-02-06 10:22:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:05,701 INFO L225 Difference]: With dead ends: 355 [2025-02-06 10:22:05,701 INFO L226 Difference]: Without dead ends: 355 [2025-02-06 10:22:05,701 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 598 GetRequests, 581 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:22:05,702 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:05,702 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 15 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:22:05,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-02-06 10:22:05,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2025-02-06 10:22:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.0536723163841808) internal successors, (373), 354 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 373 transitions. [2025-02-06 10:22:05,705 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 373 transitions. Word has length 295 [2025-02-06 10:22:05,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:05,706 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 373 transitions. [2025-02-06 10:22:05,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 15 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:05,706 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 373 transitions. [2025-02-06 10:22:05,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2025-02-06 10:22:05,707 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:05,707 INFO L218 NwaCegarLoop]: trace histogram [74, 73, 73, 73, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:22:05,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:05,907 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 [2025-02-06 10:22:05,908 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:05,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:05,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1328567951, now seen corresponding path program 10 times [2025-02-06 10:22:05,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:05,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937114351] [2025-02-06 10:22:05,912 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:22:05,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:05,936 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 342 statements into 2 equivalence classes. [2025-02-06 10:22:06,027 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 342 of 342 statements. [2025-02-06 10:22:06,028 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:22:06,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 11513 backedges. 7386 proven. 422 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2025-02-06 10:22:06,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:06,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937114351] [2025-02-06 10:22:06,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937114351] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:06,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578110505] [2025-02-06 10:22:06,583 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:22:06,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:06,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:06,587 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) [2025-02-06 10:22:06,589 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 [2025-02-06 10:22:06,724 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 342 statements into 2 equivalence classes. [2025-02-06 10:22:07,053 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 342 of 342 statements. [2025-02-06 10:22:07,053 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:22:07,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:07,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 10:22:07,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:07,427 INFO L134 CoverageAnalysis]: Checked inductivity of 11513 backedges. 7969 proven. 1338 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked. [2025-02-06 10:22:07,428 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 11513 backedges. 7969 proven. 1338 refuted. 0 times theorem prover too weak. 2206 trivial. 0 not checked. [2025-02-06 10:22:07,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578110505] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:07,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:07,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 36 [2025-02-06 10:22:07,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18159725] [2025-02-06 10:22:07,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:07,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 10:22:07,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:07,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 10:22:07,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1018, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 10:22:07,679 INFO L87 Difference]: Start difference. First operand 355 states and 373 transitions. Second operand has 36 states, 36 states have (on average 5.083333333333333) internal successors, (183), 36 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:08,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:08,814 INFO L93 Difference]: Finished difference Result 355 states and 370 transitions. [2025-02-06 10:22:08,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2025-02-06 10:22:08,814 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.083333333333333) internal successors, (183), 36 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 342 [2025-02-06 10:22:08,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:08,815 INFO L225 Difference]: With dead ends: 355 [2025-02-06 10:22:08,815 INFO L226 Difference]: Without dead ends: 355 [2025-02-06 10:22:08,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 653 SyntacticMatches, 16 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2309 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1602, Invalid=6230, Unknown=0, NotChecked=0, Total=7832 [2025-02-06 10:22:08,818 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 55 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1985 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:08,818 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 42 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1985 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 10:22:08,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-02-06 10:22:08,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2025-02-06 10:22:08,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.0451977401129944) internal successors, (370), 354 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 370 transitions. [2025-02-06 10:22:08,824 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 370 transitions. Word has length 342 [2025-02-06 10:22:08,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:08,824 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 370 transitions. [2025-02-06 10:22:08,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.083333333333333) internal successors, (183), 36 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:08,825 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 370 transitions. [2025-02-06 10:22:08,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2025-02-06 10:22:08,826 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:08,826 INFO L218 NwaCegarLoop]: trace histogram [76, 75, 75, 75, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:22:08,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-06 10:22:09,026 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 [2025-02-06 10:22:09,027 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:09,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1571414127, now seen corresponding path program 11 times [2025-02-06 10:22:09,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:09,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123190430] [2025-02-06 10:22:09,028 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:22:09,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:09,049 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 350 statements into 33 equivalence classes. [2025-02-06 10:22:09,430 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 345 of 350 statements. [2025-02-06 10:22:09,430 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-02-06 10:22:09,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:09,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12123 backedges. 8255 proven. 1100 refuted. 0 times theorem prover too weak. 2768 trivial. 0 not checked. [2025-02-06 10:22:09,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:09,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123190430] [2025-02-06 10:22:09,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123190430] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:09,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263156179] [2025-02-06 10:22:09,966 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:22:09,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:09,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:09,968 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) [2025-02-06 10:22:09,982 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 [2025-02-06 10:22:10,128 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 350 statements into 33 equivalence classes. [2025-02-06 10:22:11,108 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) and asserted 345 of 350 statements. [2025-02-06 10:22:11,108 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2025-02-06 10:22:11,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:11,115 INFO L256 TraceCheckSpWp]: Trace formula consists of 1265 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 10:22:11,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:11,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12123 backedges. 8479 proven. 2144 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2025-02-06 10:22:11,570 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:11,938 INFO L134 CoverageAnalysis]: Checked inductivity of 12123 backedges. 8967 proven. 1656 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2025-02-06 10:22:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263156179] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:11,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:11,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2025-02-06 10:22:11,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484340] [2025-02-06 10:22:11,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:11,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-06 10:22:11,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:11,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-06 10:22:11,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=1613, Unknown=0, NotChecked=0, Total=1980 [2025-02-06 10:22:11,941 INFO L87 Difference]: Start difference. First operand 355 states and 370 transitions. Second operand has 45 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 45 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:13,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:13,469 INFO L93 Difference]: Finished difference Result 355 states and 368 transitions. [2025-02-06 10:22:13,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-02-06 10:22:13,469 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 45 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 350 [2025-02-06 10:22:13,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:13,470 INFO L225 Difference]: With dead ends: 355 [2025-02-06 10:22:13,470 INFO L226 Difference]: Without dead ends: 355 [2025-02-06 10:22:13,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 662 SyntacticMatches, 16 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3042 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2235, Invalid=8067, Unknown=0, NotChecked=0, Total=10302 [2025-02-06 10:22:13,471 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:13,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 41 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 10:22:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2025-02-06 10:22:13,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2025-02-06 10:22:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.03954802259887) internal successors, (368), 354 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:13,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 368 transitions. [2025-02-06 10:22:13,476 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 368 transitions. Word has length 350 [2025-02-06 10:22:13,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:13,476 INFO L471 AbstractCegarLoop]: Abstraction has 355 states and 368 transitions. [2025-02-06 10:22:13,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.5777777777777775) internal successors, (206), 45 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:13,476 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 368 transitions. [2025-02-06 10:22:13,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2025-02-06 10:22:13,478 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:13,478 INFO L218 NwaCegarLoop]: trace histogram [77, 76, 76, 76, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:22:13,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-06 10:22:13,678 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 [2025-02-06 10:22:13,680 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:13,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:13,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1611959602, now seen corresponding path program 12 times [2025-02-06 10:22:13,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:13,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452443732] [2025-02-06 10:22:13,681 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:22:13,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:13,712 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 354 statements into 33 equivalence classes. [2025-02-06 10:22:13,841 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) and asserted 233 of 354 statements. [2025-02-06 10:22:13,841 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2025-02-06 10:22:13,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12434 backedges. 2422 proven. 5322 refuted. 0 times theorem prover too weak. 4690 trivial. 0 not checked. [2025-02-06 10:22:14,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:14,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452443732] [2025-02-06 10:22:14,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452443732] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:14,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206914793] [2025-02-06 10:22:14,498 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:22:14,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:14,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:14,500 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) [2025-02-06 10:22:14,502 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 [2025-02-06 10:22:14,654 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 354 statements into 33 equivalence classes. [2025-02-06 10:22:15,083 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) and asserted 233 of 354 statements. [2025-02-06 10:22:15,083 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2025-02-06 10:22:15,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:15,087 INFO L256 TraceCheckSpWp]: Trace formula consists of 914 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:22:15,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:15,691 INFO L134 CoverageAnalysis]: Checked inductivity of 12434 backedges. 1925 proven. 5322 refuted. 0 times theorem prover too weak. 5187 trivial. 0 not checked. [2025-02-06 10:22:15,691 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 12434 backedges. 0 proven. 7247 refuted. 0 times theorem prover too weak. 5187 trivial. 0 not checked. [2025-02-06 10:22:16,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206914793] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:16,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:16,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 19, 19] total 62 [2025-02-06 10:22:16,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865298387] [2025-02-06 10:22:16,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:16,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-02-06 10:22:16,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:16,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-02-06 10:22:16,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=783, Invalid=3123, Unknown=0, NotChecked=0, Total=3906 [2025-02-06 10:22:16,867 INFO L87 Difference]: Start difference. First operand 355 states and 368 transitions. Second operand has 63 states, 62 states have (on average 3.564516129032258) internal successors, (221), 63 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:22,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:22,091 INFO L93 Difference]: Finished difference Result 640 states and 692 transitions. [2025-02-06 10:22:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2025-02-06 10:22:22,092 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 3.564516129032258) internal successors, (221), 63 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 354 [2025-02-06 10:22:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:22,093 INFO L225 Difference]: With dead ends: 640 [2025-02-06 10:22:22,093 INFO L226 Difference]: Without dead ends: 640 [2025-02-06 10:22:22,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 828 GetRequests, 671 SyntacticMatches, 1 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8314 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6570, Invalid=18236, Unknown=0, NotChecked=0, Total=24806 [2025-02-06 10:22:22,095 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 553 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:22,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 37 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:22:22,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2025-02-06 10:22:22,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 546. [2025-02-06 10:22:22,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 545 states have (on average 1.0568807339449542) internal successors, (576), 545 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 576 transitions. [2025-02-06 10:22:22,100 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 576 transitions. Word has length 354 [2025-02-06 10:22:22,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:22,101 INFO L471 AbstractCegarLoop]: Abstraction has 546 states and 576 transitions. [2025-02-06 10:22:22,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 3.564516129032258) internal successors, (221), 63 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:22,101 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 576 transitions. [2025-02-06 10:22:22,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2025-02-06 10:22:22,103 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:22,103 INFO L218 NwaCegarLoop]: trace histogram [121, 120, 120, 120, 13, 12, 12, 12, 12, 1, 1, 1] [2025-02-06 10:22:22,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:22,303 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 [2025-02-06 10:22:22,304 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:22,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:22,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1720403595, now seen corresponding path program 13 times [2025-02-06 10:22:22,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:22,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835377929] [2025-02-06 10:22:22,304 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 10:22:22,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:22,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 545 statements into 1 equivalence classes. [2025-02-06 10:22:22,385 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 545 of 545 statements. [2025-02-06 10:22:22,385 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:22,385 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 30594 backedges. 20091 proven. 5651 refuted. 0 times theorem prover too weak. 4852 trivial. 0 not checked. [2025-02-06 10:22:23,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:23,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835377929] [2025-02-06 10:22:23,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835377929] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:23,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199521879] [2025-02-06 10:22:23,827 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 10:22:23,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:23,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:23,829 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) [2025-02-06 10:22:23,831 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 [2025-02-06 10:22:24,008 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 545 statements into 1 equivalence classes. [2025-02-06 10:22:24,165 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 545 of 545 statements. [2025-02-06 10:22:24,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:24,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:24,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 1991 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 10:22:24,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 30594 backedges. 22452 proven. 3276 refuted. 0 times theorem prover too weak. 4866 trivial. 0 not checked. [2025-02-06 10:22:24,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:24,994 INFO L134 CoverageAnalysis]: Checked inductivity of 30594 backedges. 22452 proven. 3276 refuted. 0 times theorem prover too weak. 4866 trivial. 0 not checked. [2025-02-06 10:22:24,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199521879] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:24,995 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:24,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25, 25] total 44 [2025-02-06 10:22:24,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955480436] [2025-02-06 10:22:24,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:24,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-02-06 10:22:24,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:24,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-02-06 10:22:24,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1500, Unknown=0, NotChecked=0, Total=1892 [2025-02-06 10:22:24,996 INFO L87 Difference]: Start difference. First operand 546 states and 576 transitions. Second operand has 44 states, 44 states have (on average 5.340909090909091) internal successors, (235), 44 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:26,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:26,752 INFO L93 Difference]: Finished difference Result 553 states and 577 transitions. [2025-02-06 10:22:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2025-02-06 10:22:26,752 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.340909090909091) internal successors, (235), 44 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 545 [2025-02-06 10:22:26,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:26,753 INFO L225 Difference]: With dead ends: 553 [2025-02-06 10:22:26,753 INFO L226 Difference]: Without dead ends: 553 [2025-02-06 10:22:26,755 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1208 GetRequests, 1055 SyntacticMatches, 21 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5521 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=4069, Invalid=13753, Unknown=0, NotChecked=0, Total=17822 [2025-02-06 10:22:26,756 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 72 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 2045 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 2057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:26,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 41 Invalid, 2057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2045 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 10:22:26,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2025-02-06 10:22:26,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 550. [2025-02-06 10:22:26,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 549 states have (on average 1.0455373406193078) internal successors, (574), 549 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 574 transitions. [2025-02-06 10:22:26,760 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 574 transitions. Word has length 545 [2025-02-06 10:22:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:26,760 INFO L471 AbstractCegarLoop]: Abstraction has 550 states and 574 transitions. [2025-02-06 10:22:26,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.340909090909091) internal successors, (235), 44 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 574 transitions. [2025-02-06 10:22:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2025-02-06 10:22:26,762 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:26,762 INFO L218 NwaCegarLoop]: trace histogram [122, 121, 121, 121, 13, 12, 12, 12, 12, 1, 1, 1] [2025-02-06 10:22:26,771 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 [2025-02-06 10:22:26,963 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 [2025-02-06 10:22:26,963 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:26,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:26,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1569494568, now seen corresponding path program 14 times [2025-02-06 10:22:26,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:26,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682061388] [2025-02-06 10:22:26,964 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:22:26,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:27,001 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 549 statements into 2 equivalence classes. [2025-02-06 10:22:27,050 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 549 of 549 statements. [2025-02-06 10:22:27,050 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:22:27,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 31088 backedges. 2091 proven. 27772 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked. [2025-02-06 10:22:30,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:30,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682061388] [2025-02-06 10:22:30,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682061388] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:30,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443321810] [2025-02-06 10:22:30,265 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:22:30,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:30,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:30,267 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) [2025-02-06 10:22:30,268 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 [2025-02-06 10:22:30,456 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 549 statements into 2 equivalence classes. [2025-02-06 10:22:30,608 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 549 of 549 statements. [2025-02-06 10:22:30,608 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:22:30,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:30,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 2004 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 10:22:30,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:31,319 INFO L134 CoverageAnalysis]: Checked inductivity of 31088 backedges. 12094 proven. 15851 refuted. 0 times theorem prover too weak. 3143 trivial. 0 not checked. [2025-02-06 10:22:31,319 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 31088 backedges. 12094 proven. 15851 refuted. 0 times theorem prover too weak. 3143 trivial. 0 not checked. [2025-02-06 10:22:31,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443321810] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:31,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:31,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 28, 28] total 88 [2025-02-06 10:22:31,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890849024] [2025-02-06 10:22:31,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:31,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2025-02-06 10:22:31,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:31,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2025-02-06 10:22:31,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1182, Invalid=6474, Unknown=0, NotChecked=0, Total=7656 [2025-02-06 10:22:31,843 INFO L87 Difference]: Start difference. First operand 550 states and 574 transitions. Second operand has 88 states, 88 states have (on average 4.738636363636363) internal successors, (417), 88 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:33,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:33,880 INFO L93 Difference]: Finished difference Result 610 states and 633 transitions. [2025-02-06 10:22:33,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2025-02-06 10:22:33,880 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 4.738636363636363) internal successors, (417), 88 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 549 [2025-02-06 10:22:33,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:33,882 INFO L225 Difference]: With dead ends: 610 [2025-02-06 10:22:33,882 INFO L226 Difference]: Without dead ends: 610 [2025-02-06 10:22:33,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 1063 SyntacticMatches, 17 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13536 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=6675, Invalid=28857, Unknown=0, NotChecked=0, Total=35532 [2025-02-06 10:22:33,883 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 22 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1913 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:33,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 33 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1913 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 10:22:33,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2025-02-06 10:22:33,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 607. [2025-02-06 10:22:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 606 states have (on average 1.0396039603960396) internal successors, (630), 606 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:33,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 630 transitions. [2025-02-06 10:22:33,888 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 630 transitions. Word has length 549 [2025-02-06 10:22:33,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:33,889 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 630 transitions. [2025-02-06 10:22:33,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 4.738636363636363) internal successors, (417), 88 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:33,889 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 630 transitions. [2025-02-06 10:22:33,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 603 [2025-02-06 10:22:33,891 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:33,891 INFO L218 NwaCegarLoop]: trace histogram [134, 133, 133, 133, 14, 13, 13, 13, 13, 1, 1, 1] [2025-02-06 10:22:33,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:34,093 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 [2025-02-06 10:22:34,093 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:34,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash 862439603, now seen corresponding path program 15 times [2025-02-06 10:22:34,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:34,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001226885] [2025-02-06 10:22:34,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:34,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:34,135 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 602 statements into 48 equivalence classes. [2025-02-06 10:22:34,336 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) and asserted 359 of 602 statements. [2025-02-06 10:22:34,337 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2025-02-06 10:22:34,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:35,128 INFO L134 CoverageAnalysis]: Checked inductivity of 37523 backedges. 0 proven. 11257 refuted. 0 times theorem prover too weak. 26266 trivial. 0 not checked. [2025-02-06 10:22:35,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:35,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001226885] [2025-02-06 10:22:35,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001226885] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:35,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362109152] [2025-02-06 10:22:35,129 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:35,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:35,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:35,131 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) [2025-02-06 10:22:35,132 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 [2025-02-06 10:22:35,324 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 602 statements into 48 equivalence classes. [2025-02-06 10:22:36,707 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) and asserted 359 of 602 statements. [2025-02-06 10:22:36,707 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2025-02-06 10:22:36,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:36,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-02-06 10:22:36,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:37,299 INFO L134 CoverageAnalysis]: Checked inductivity of 37523 backedges. 10289 proven. 968 refuted. 0 times theorem prover too weak. 26266 trivial. 0 not checked. [2025-02-06 10:22:37,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 37523 backedges. 10289 proven. 968 refuted. 0 times theorem prover too weak. 26266 trivial. 0 not checked. [2025-02-06 10:22:38,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362109152] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:38,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:38,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24, 24] total 73 [2025-02-06 10:22:38,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140063538] [2025-02-06 10:22:38,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:38,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2025-02-06 10:22:38,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:38,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2025-02-06 10:22:38,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=900, Invalid=4502, Unknown=0, NotChecked=0, Total=5402 [2025-02-06 10:22:38,103 INFO L87 Difference]: Start difference. First operand 607 states and 630 transitions. Second operand has 74 states, 73 states have (on average 4.027397260273973) internal successors, (294), 74 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:40,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:40,610 INFO L93 Difference]: Finished difference Result 688 states and 731 transitions. [2025-02-06 10:22:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-06 10:22:40,611 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 4.027397260273973) internal successors, (294), 74 states have internal predecessors, (294), 0 states have call successors, (0), 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 602 [2025-02-06 10:22:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:40,612 INFO L225 Difference]: With dead ends: 688 [2025-02-06 10:22:40,612 INFO L226 Difference]: Without dead ends: 688 [2025-02-06 10:22:40,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1157 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2787 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2023, Invalid=9107, Unknown=0, NotChecked=0, Total=11130 [2025-02-06 10:22:40,613 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 68 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 2726 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:40,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 115 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2726 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-06 10:22:40,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2025-02-06 10:22:40,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 647. [2025-02-06 10:22:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.0526315789473684) internal successors, (680), 646 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:40,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 680 transitions. [2025-02-06 10:22:40,623 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 680 transitions. Word has length 602 [2025-02-06 10:22:40,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:40,624 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 680 transitions. [2025-02-06 10:22:40,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 4.027397260273973) internal successors, (294), 74 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:40,624 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 680 transitions. [2025-02-06 10:22:40,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2025-02-06 10:22:40,651 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:40,651 INFO L218 NwaCegarLoop]: trace histogram [144, 143, 143, 143, 14, 13, 13, 13, 13, 1, 1, 1] [2025-02-06 10:22:40,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-02-06 10:22:40,851 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 [2025-02-06 10:22:40,852 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:40,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash -356108587, now seen corresponding path program 16 times [2025-02-06 10:22:40,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:40,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793628746] [2025-02-06 10:22:40,852 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:22:40,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:40,885 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 642 statements into 2 equivalence classes. [2025-02-06 10:22:41,193 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 642 of 642 statements. [2025-02-06 10:22:41,193 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:22:41,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 43173 backedges. 31475 proven. 4592 refuted. 0 times theorem prover too weak. 7106 trivial. 0 not checked. [2025-02-06 10:22:42,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:42,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793628746] [2025-02-06 10:22:42,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793628746] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:42,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197579645] [2025-02-06 10:22:42,322 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:22:42,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:42,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:42,324 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) [2025-02-06 10:22:42,324 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 [2025-02-06 10:22:42,577 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 642 statements into 2 equivalence classes. [2025-02-06 10:22:44,291 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 642 of 642 statements. [2025-02-06 10:22:44,293 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:22:44,293 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:44,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 2322 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-06 10:22:44,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 43173 backedges. 31869 proven. 4192 refuted. 0 times theorem prover too weak. 7112 trivial. 0 not checked. [2025-02-06 10:22:44,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 43173 backedges. 31869 proven. 4192 refuted. 0 times theorem prover too weak. 7112 trivial. 0 not checked. [2025-02-06 10:22:45,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197579645] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:45,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:45,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27, 27] total 42 [2025-02-06 10:22:45,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518888184] [2025-02-06 10:22:45,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:45,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-02-06 10:22:45,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:45,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-02-06 10:22:45,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1327, Unknown=0, NotChecked=0, Total=1722 [2025-02-06 10:22:45,354 INFO L87 Difference]: Start difference. First operand 647 states and 680 transitions. Second operand has 42 states, 42 states have (on average 5.190476190476191) internal successors, (218), 42 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:47,336 INFO L93 Difference]: Finished difference Result 647 states and 677 transitions. [2025-02-06 10:22:47,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2025-02-06 10:22:47,337 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.190476190476191) internal successors, (218), 42 states have internal predecessors, (218), 0 states have call successors, (0), 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 642 [2025-02-06 10:22:47,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:47,339 INFO L225 Difference]: With dead ends: 647 [2025-02-06 10:22:47,339 INFO L226 Difference]: Without dead ends: 647 [2025-02-06 10:22:47,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1414 GetRequests, 1247 SyntacticMatches, 24 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6545 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=5550, Invalid=15330, Unknown=0, NotChecked=0, Total=20880 [2025-02-06 10:22:47,342 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 74 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:47,343 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 46 Invalid, 1585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 10:22:47,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2025-02-06 10:22:47,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 647. [2025-02-06 10:22:47,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 646 states have (on average 1.0479876160990713) internal successors, (677), 646 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:47,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 677 transitions. [2025-02-06 10:22:47,349 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 677 transitions. Word has length 642 [2025-02-06 10:22:47,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:47,349 INFO L471 AbstractCegarLoop]: Abstraction has 647 states and 677 transitions. [2025-02-06 10:22:47,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.190476190476191) internal successors, (218), 42 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:47,349 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 677 transitions. [2025-02-06 10:22:47,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2025-02-06 10:22:47,352 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:47,352 INFO L218 NwaCegarLoop]: trace histogram [145, 144, 144, 144, 14, 13, 13, 13, 13, 1, 1, 1] [2025-02-06 10:22:47,366 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-02-06 10:22:47,553 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 [2025-02-06 10:22:47,553 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:47,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:47,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1733136754, now seen corresponding path program 17 times [2025-02-06 10:22:47,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:47,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754936904] [2025-02-06 10:22:47,554 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:22:47,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:47,588 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 646 statements into 48 equivalence classes. [2025-02-06 10:22:48,718 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 38 check-sat command(s) and asserted 568 of 646 statements. [2025-02-06 10:22:48,719 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 38 check-sat command(s) [2025-02-06 10:22:48,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:49,940 INFO L134 CoverageAnalysis]: Checked inductivity of 43760 backedges. 26642 proven. 1081 refuted. 0 times theorem prover too weak. 16037 trivial. 0 not checked. [2025-02-06 10:22:49,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:49,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754936904] [2025-02-06 10:22:49,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754936904] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:49,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900163414] [2025-02-06 10:22:49,940 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:22:49,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:49,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:49,942 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) [2025-02-06 10:22:49,943 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 [2025-02-06 10:22:50,162 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 646 statements into 48 equivalence classes. [2025-02-06 10:22:53,615 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 38 check-sat command(s) and asserted 568 of 646 statements. [2025-02-06 10:22:53,615 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 38 check-sat command(s) [2025-02-06 10:22:53,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:53,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 2037 conjuncts, 37 conjuncts are in the unsatisfiable core [2025-02-06 10:22:53,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 43760 backedges. 19961 proven. 19203 refuted. 0 times theorem prover too weak. 4596 trivial. 0 not checked. [2025-02-06 10:22:54,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:55,357 INFO L134 CoverageAnalysis]: Checked inductivity of 43760 backedges. 19961 proven. 19203 refuted. 0 times theorem prover too weak. 4596 trivial. 0 not checked. [2025-02-06 10:22:55,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900163414] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:55,357 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:55,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 34] total 70 [2025-02-06 10:22:55,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221802208] [2025-02-06 10:22:55,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:55,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2025-02-06 10:22:55,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:55,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2025-02-06 10:22:55,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=814, Invalid=4016, Unknown=0, NotChecked=0, Total=4830 [2025-02-06 10:22:55,359 INFO L87 Difference]: Start difference. First operand 647 states and 677 transitions. Second operand has 70 states, 70 states have (on average 4.7) internal successors, (329), 70 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) [2025-02-06 10:22:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:58,779 INFO L93 Difference]: Finished difference Result 776 states and 809 transitions. [2025-02-06 10:22:58,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 206 states. [2025-02-06 10:22:58,779 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 4.7) internal successors, (329), 70 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) Word has length 646 [2025-02-06 10:22:58,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:58,781 INFO L225 Difference]: With dead ends: 776 [2025-02-06 10:22:58,781 INFO L226 Difference]: Without dead ends: 776 [2025-02-06 10:22:58,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1500 GetRequests, 1230 SyntacticMatches, 25 SemanticMatches, 245 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23737 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=9377, Invalid=51385, Unknown=0, NotChecked=0, Total=60762 [2025-02-06 10:22:58,785 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 226 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1712 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:58,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 46 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1712 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 10:22:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2025-02-06 10:22:58,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 773. [2025-02-06 10:22:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 772 states have (on average 1.044041450777202) internal successors, (806), 772 states have internal predecessors, (806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:58,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 806 transitions. [2025-02-06 10:22:58,790 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 806 transitions. Word has length 646 [2025-02-06 10:22:58,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:58,791 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 806 transitions. [2025-02-06 10:22:58,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 4.7) internal successors, (329), 70 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) [2025-02-06 10:22:58,791 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 806 transitions. [2025-02-06 10:22:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2025-02-06 10:22:58,794 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:58,794 INFO L218 NwaCegarLoop]: trace histogram [173, 172, 172, 172, 16, 15, 15, 15, 15, 1, 1, 1] [2025-02-06 10:22:58,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:58,994 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 [2025-02-06 10:22:58,995 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:58,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:58,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2003379602, now seen corresponding path program 18 times [2025-02-06 10:22:58,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:58,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723858284] [2025-02-06 10:22:58,997 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:22:58,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:59,034 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 768 statements into 56 equivalence classes. [2025-02-06 10:23:00,109 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) and asserted 692 of 768 statements. [2025-02-06 10:23:00,110 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2025-02-06 10:23:00,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:23:02,113 INFO L134 CoverageAnalysis]: Checked inductivity of 62303 backedges. 11658 proven. 19736 refuted. 0 times theorem prover too weak. 30909 trivial. 0 not checked. [2025-02-06 10:23:02,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:23:02,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723858284] [2025-02-06 10:23:02,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723858284] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:23:02,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590422134] [2025-02-06 10:23:02,114 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:23:02,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:23:02,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:23:02,115 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) [2025-02-06 10:23:02,116 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 [2025-02-06 10:23:02,362 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 768 statements into 56 equivalence classes.