./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-examples/sanfoundry_24-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-examples/sanfoundry_24-2.i -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 7e3ff0b77765ac98635f2070c186c57a6cae0bb79eb8bc9016d9d716e81867aa --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 06:11:32,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:11:32,977 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 06:11:32,984 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:11:32,985 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:11:33,006 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:11:33,009 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:11:33,009 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:11:33,009 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:11:33,009 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:11:33,010 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:11:33,010 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:11:33,011 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:11:33,011 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:11:33,011 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:11:33,012 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:11:33,012 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 06:11:33,012 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:11:33,012 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 06:11:33,012 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:11:33,012 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:11:33,012 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:11:33,012 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:11:33,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:11:33,012 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:11:33,013 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:11:33,013 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 06:11:33,013 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:11:33,013 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:11:33,013 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:11:33,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:11:33,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:11:33,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:11:33,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:11:33,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:11:33,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:11:33,014 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 06:11:33,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 06:11:33,014 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:11:33,014 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:11:33,014 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:11:33,014 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:11:33,015 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 -> 7e3ff0b77765ac98635f2070c186c57a6cae0bb79eb8bc9016d9d716e81867aa [2025-02-08 06:11:33,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:11:33,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:11:33,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:11:33,277 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:11:33,278 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:11:33,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/sanfoundry_24-2.i [2025-02-08 06:11:34,531 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/77912ebb3/7e537bf61c194fd8a08d8c435b056be6/FLAG0bca03954 [2025-02-08 06:11:34,769 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:11:34,770 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/sanfoundry_24-2.i [2025-02-08 06:11:34,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/77912ebb3/7e537bf61c194fd8a08d8c435b056be6/FLAG0bca03954 [2025-02-08 06:11:34,798 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/77912ebb3/7e537bf61c194fd8a08d8c435b056be6 [2025-02-08 06:11:34,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:11:34,802 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:11:34,803 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:11:34,803 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:11:34,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:11:34,807 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:11:34" (1/1) ... [2025-02-08 06:11:34,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3cece6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:34, skipping insertion in model container [2025-02-08 06:11:34,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:11:34" (1/1) ... [2025-02-08 06:11:34,825 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:11:34,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:11:34,972 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 06:11:34,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:11:35,009 INFO L204 MainTranslator]: Completed translation [2025-02-08 06:11:35,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35 WrapperNode [2025-02-08 06:11:35,010 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:11:35,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 06:11:35,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 06:11:35,012 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 06:11:35,017 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,043 INFO L138 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 64 [2025-02-08 06:11:35,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 06:11:35,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 06:11:35,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 06:11:35,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 06:11:35,050 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,050 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,052 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,061 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-02-08 06:11:35,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,066 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,068 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,069 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,072 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 06:11:35,073 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 06:11:35,073 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 06:11:35,073 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 06:11:35,074 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (1/1) ... [2025-02-08 06:11:35,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:11:35,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:11:35,100 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) [2025-02-08 06:11:35,102 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 [2025-02-08 06:11:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-08 06:11:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-08 06:11:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-08 06:11:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 06:11:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 06:11:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 06:11:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 06:11:35,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 06:11:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 06:11:35,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 06:11:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-02-08 06:11:35,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-02-08 06:11:35,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 06:11:35,179 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 06:11:35,181 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 06:11:35,420 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L23: call ULTIMATE.dealloc(main_~#array~0#1.base, main_~#array~0#1.offset);havoc main_~#array~0#1.base, main_~#array~0#1.offset; [2025-02-08 06:11:35,447 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2025-02-08 06:11:35,447 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 06:11:35,461 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 06:11:35,461 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 06:11:35,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:11:35 BoogieIcfgContainer [2025-02-08 06:11:35,462 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 06:11:35,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 06:11:35,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 06:11:35,468 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 06:11:35,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 06:11:34" (1/3) ... [2025-02-08 06:11:35,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c005a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:11:35, skipping insertion in model container [2025-02-08 06:11:35,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:11:35" (2/3) ... [2025-02-08 06:11:35,470 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c005a82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:11:35, skipping insertion in model container [2025-02-08 06:11:35,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:11:35" (3/3) ... [2025-02-08 06:11:35,472 INFO L128 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-2.i [2025-02-08 06:11:35,486 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 06:11:35,488 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sanfoundry_24-2.i that has 2 procedures, 42 locations, 1 initial locations, 3 loop locations, and 12 error locations. [2025-02-08 06:11:35,530 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 06:11:35,544 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;@4d1a720c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 06:11:35,545 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-02-08 06:11:35,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 38 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 06:11:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 06:11:35,554 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:35,554 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 06:11:35,555 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:35,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:35,560 INFO L85 PathProgramCache]: Analyzing trace with hash 67491, now seen corresponding path program 1 times [2025-02-08 06:11:35,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:35,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117046964] [2025-02-08 06:11:35,568 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:35,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:35,631 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 06:11:35,649 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 06:11:35,649 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:35,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:35,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:35,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117046964] [2025-02-08 06:11:35,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117046964] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:11:35,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:11:35,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 06:11:35,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126837894] [2025-02-08 06:11:35,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:11:35,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:11:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:35,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:11:35,773 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:11:35,776 INFO L87 Difference]: Start difference. First operand has 42 states, 26 states have (on average 1.7307692307692308) internal successors, (45), 38 states have internal predecessors, (45), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:35,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:35,847 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2025-02-08 06:11:35,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:11:35,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2025-02-08 06:11:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:35,854 INFO L225 Difference]: With dead ends: 36 [2025-02-08 06:11:35,855 INFO L226 Difference]: Without dead ends: 34 [2025-02-08 06:11:35,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:11:35,859 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 20 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:35,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 37 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:11:35,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2025-02-08 06:11:35,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2025-02-08 06:11:35,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 30 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 06:11:35,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2025-02-08 06:11:35,890 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 3 [2025-02-08 06:11:35,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:35,892 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2025-02-08 06:11:35,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:35,893 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2025-02-08 06:11:35,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2025-02-08 06:11:35,893 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:35,893 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2025-02-08 06:11:35,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 06:11:35,894 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:35,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:35,895 INFO L85 PathProgramCache]: Analyzing trace with hash 67492, now seen corresponding path program 1 times [2025-02-08 06:11:35,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:35,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730699892] [2025-02-08 06:11:35,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:35,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:35,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 3 statements into 1 equivalence classes. [2025-02-08 06:11:35,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 3 of 3 statements. [2025-02-08 06:11:35,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:35,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:36,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:36,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730699892] [2025-02-08 06:11:36,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730699892] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:11:36,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:11:36,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 06:11:36,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913389001] [2025-02-08 06:11:36,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:11:36,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:11:36,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:36,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:11:36,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:11:36,002 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:36,090 INFO L93 Difference]: Finished difference Result 53 states and 65 transitions. [2025-02-08 06:11:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:11:36,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2025-02-08 06:11:36,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:36,091 INFO L225 Difference]: With dead ends: 53 [2025-02-08 06:11:36,091 INFO L226 Difference]: Without dead ends: 53 [2025-02-08 06:11:36,091 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:11:36,092 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:36,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 42 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:11:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-08 06:11:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2025-02-08 06:11:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 40 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 06:11:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2025-02-08 06:11:36,102 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 3 [2025-02-08 06:11:36,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:36,102 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2025-02-08 06:11:36,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2025-02-08 06:11:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-08 06:11:36,103 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:36,103 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-08 06:11:36,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 06:11:36,103 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:36,104 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:36,104 INFO L85 PathProgramCache]: Analyzing trace with hash 64693684, now seen corresponding path program 1 times [2025-02-08 06:11:36,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:36,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485685157] [2025-02-08 06:11:36,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:36,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:36,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-08 06:11:36,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-08 06:11:36,125 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:36,126 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:36,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:36,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485685157] [2025-02-08 06:11:36,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485685157] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:11:36,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:11:36,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:11:36,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121231463] [2025-02-08 06:11:36,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:11:36,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:11:36,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:36,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:11:36,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:11:36,205 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 4 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) [2025-02-08 06:11:36,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:36,245 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2025-02-08 06:11:36,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:11:36,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 [2025-02-08 06:11:36,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:36,246 INFO L225 Difference]: With dead ends: 43 [2025-02-08 06:11:36,246 INFO L226 Difference]: Without dead ends: 42 [2025-02-08 06:11:36,246 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:11:36,247 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:36,247 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 55 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:11:36,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-08 06:11:36,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2025-02-08 06:11:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 38 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-08 06:11:36,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2025-02-08 06:11:36,250 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 5 [2025-02-08 06:11:36,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:36,250 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2025-02-08 06:11:36,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2025-02-08 06:11:36,250 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2025-02-08 06:11:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:11:36,250 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:36,250 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2025-02-08 06:11:36,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 06:11:36,250 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:36,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:36,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2010627486, now seen corresponding path program 1 times [2025-02-08 06:11:36,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:36,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858325199] [2025-02-08 06:11:36,251 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:36,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:36,256 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:11:36,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:11:36,262 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:36,262 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:36,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:36,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858325199] [2025-02-08 06:11:36,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858325199] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:11:36,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477684981] [2025-02-08 06:11:36,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:36,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:11:36,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:11:36,346 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) [2025-02-08 06:11:36,348 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 [2025-02-08 06:11:36,388 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:11:36,397 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:11:36,398 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:36,398 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:36,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-08 06:11:36,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:11:36,459 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 [2025-02-08 06:11:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:36,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:11:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:36,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477684981] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:11:36,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:11:36,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2025-02-08 06:11:36,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819591468] [2025-02-08 06:11:36,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:11:36,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 06:11:36,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:36,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 06:11:36,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:11:36,648 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:36,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:36,881 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2025-02-08 06:11:36,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:11:36,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 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 [2025-02-08 06:11:36,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:36,883 INFO L225 Difference]: With dead ends: 101 [2025-02-08 06:11:36,884 INFO L226 Difference]: Without dead ends: 101 [2025-02-08 06:11:36,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:11:36,885 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 88 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:36,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 86 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:11:36,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2025-02-08 06:11:36,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2025-02-08 06:11:36,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 80 states have (on average 1.275) internal successors, (102), 83 states have internal predecessors, (102), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-08 06:11:36,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2025-02-08 06:11:36,899 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 6 [2025-02-08 06:11:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:36,899 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2025-02-08 06:11:36,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2025-02-08 06:11:36,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 06:11:36,900 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:36,900 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2025-02-08 06:11:36,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 06:11:37,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:11:37,106 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:37,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash 609684442, now seen corresponding path program 1 times [2025-02-08 06:11:37,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:37,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718186890] [2025-02-08 06:11:37,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:37,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:37,113 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 06:11:37,122 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 06:11:37,122 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:37,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:37,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 06:11:37,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:37,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718186890] [2025-02-08 06:11:37,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718186890] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:11:37,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042767223] [2025-02-08 06:11:37,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:37,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:11:37,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:11:37,236 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) [2025-02-08 06:11:37,237 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 [2025-02-08 06:11:37,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 06:11:37,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 06:11:37,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:37,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:37,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 06:11:37,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:11:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:37,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:11:37,484 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 [2025-02-08 06:11:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:37,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042767223] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:11:37,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:11:37,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 10 [2025-02-08 06:11:37,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065154379] [2025-02-08 06:11:37,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:11:37,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 06:11:37,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:37,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 06:11:37,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2025-02-08 06:11:37,540 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) 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) [2025-02-08 06:11:37,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:37,719 INFO L93 Difference]: Finished difference Result 113 states and 144 transitions. [2025-02-08 06:11:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:11:37,721 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) 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 [2025-02-08 06:11:37,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:37,721 INFO L225 Difference]: With dead ends: 113 [2025-02-08 06:11:37,722 INFO L226 Difference]: Without dead ends: 113 [2025-02-08 06:11:37,722 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2025-02-08 06:11:37,723 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 167 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:37,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 97 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:11:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-02-08 06:11:37,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 93. [2025-02-08 06:11:37,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 80 states have (on average 1.275) internal successors, (102), 83 states have internal predecessors, (102), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-08 06:11:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2025-02-08 06:11:37,740 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 10 [2025-02-08 06:11:37,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:37,740 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2025-02-08 06:11:37,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) 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) [2025-02-08 06:11:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2025-02-08 06:11:37,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 06:11:37,741 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:37,741 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:11:37,750 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 [2025-02-08 06:11:37,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:11:37,942 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:37,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:37,942 INFO L85 PathProgramCache]: Analyzing trace with hash -237634738, now seen corresponding path program 1 times [2025-02-08 06:11:37,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:37,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041306403] [2025-02-08 06:11:37,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:37,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:37,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 06:11:37,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 06:11:37,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:37,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:38,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:38,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:38,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041306403] [2025-02-08 06:11:38,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041306403] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:11:38,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:11:38,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:11:38,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453968300] [2025-02-08 06:11:38,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:11:38,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:11:38,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:38,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:11:38,021 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:11:38,021 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:38,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:38,104 INFO L93 Difference]: Finished difference Result 112 states and 140 transitions. [2025-02-08 06:11:38,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:11:38,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-02-08 06:11:38,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:38,105 INFO L225 Difference]: With dead ends: 112 [2025-02-08 06:11:38,105 INFO L226 Difference]: Without dead ends: 109 [2025-02-08 06:11:38,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:11:38,106 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:38,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 56 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:11:38,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-02-08 06:11:38,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 94. [2025-02-08 06:11:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 84 states have internal predecessors, (101), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-08 06:11:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 117 transitions. [2025-02-08 06:11:38,117 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 117 transitions. Word has length 12 [2025-02-08 06:11:38,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:38,117 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 117 transitions. [2025-02-08 06:11:38,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 117 transitions. [2025-02-08 06:11:38,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 06:11:38,118 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:38,118 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:11:38,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 06:11:38,118 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:38,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:38,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1735614100, now seen corresponding path program 1 times [2025-02-08 06:11:38,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:38,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164956240] [2025-02-08 06:11:38,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:38,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:38,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 06:11:38,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:11:38,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:38,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:38,409 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:11:38,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:38,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164956240] [2025-02-08 06:11:38,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164956240] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:11:38,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:11:38,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 06:11:38,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594033315] [2025-02-08 06:11:38,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:11:38,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 06:11:38,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:38,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 06:11:38,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:11:38,411 INFO L87 Difference]: Start difference. First operand 94 states and 117 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:38,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:38,532 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2025-02-08 06:11:38,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:11:38,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 06:11:38,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:38,533 INFO L225 Difference]: With dead ends: 102 [2025-02-08 06:11:38,533 INFO L226 Difference]: Without dead ends: 102 [2025-02-08 06:11:38,534 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-08 06:11:38,534 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:38,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 156 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:11:38,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-02-08 06:11:38,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2025-02-08 06:11:38,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 84 states have (on average 1.2380952380952381) internal successors, (104), 87 states have internal predecessors, (104), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-02-08 06:11:38,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2025-02-08 06:11:38,547 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 15 [2025-02-08 06:11:38,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:38,547 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2025-02-08 06:11:38,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:38,548 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2025-02-08 06:11:38,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 06:11:38,548 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:38,548 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1] [2025-02-08 06:11:38,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 06:11:38,548 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:38,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:38,550 INFO L85 PathProgramCache]: Analyzing trace with hash -525810908, now seen corresponding path program 2 times [2025-02-08 06:11:38,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:38,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465141638] [2025-02-08 06:11:38,550 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:11:38,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:38,562 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 06:11:38,573 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:11:38,573 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:11:38,573 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:38,714 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:38,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:38,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465141638] [2025-02-08 06:11:38,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465141638] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:11:38,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517398261] [2025-02-08 06:11:38,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:11:38,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:11:38,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:11:38,717 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) [2025-02-08 06:11:38,719 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 [2025-02-08 06:11:38,753 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 15 statements into 2 equivalence classes. [2025-02-08 06:11:38,766 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:11:38,767 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:11:38,767 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:38,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 06:11:38,769 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:11:38,779 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 [2025-02-08 06:11:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:38,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:11:39,122 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:39,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517398261] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:11:39,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:11:39,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2025-02-08 06:11:39,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309819542] [2025-02-08 06:11:39,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:11:39,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:11:39,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:39,124 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:11:39,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:11:39,124 INFO L87 Difference]: Start difference. First operand 98 states and 120 transitions. Second operand has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 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) [2025-02-08 06:11:39,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:39,784 INFO L93 Difference]: Finished difference Result 283 states and 361 transitions. [2025-02-08 06:11:39,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 06:11:39,785 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 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) Word has length 15 [2025-02-08 06:11:39,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:39,786 INFO L225 Difference]: With dead ends: 283 [2025-02-08 06:11:39,786 INFO L226 Difference]: Without dead ends: 283 [2025-02-08 06:11:39,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=154, Invalid=266, Unknown=0, NotChecked=0, Total=420 [2025-02-08 06:11:39,787 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 401 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:39,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 409 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 06:11:39,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2025-02-08 06:11:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 212. [2025-02-08 06:11:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 186 states have (on average 1.2365591397849462) internal successors, (230), 189 states have internal predecessors, (230), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-08 06:11:39,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 270 transitions. [2025-02-08 06:11:39,812 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 270 transitions. Word has length 15 [2025-02-08 06:11:39,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:39,812 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 270 transitions. [2025-02-08 06:11:39,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.8125) internal successors, (45), 16 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) [2025-02-08 06:11:39,813 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 270 transitions. [2025-02-08 06:11:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 06:11:39,813 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:39,813 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:11:39,823 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 [2025-02-08 06:11:40,014 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 [2025-02-08 06:11:40,014 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:40,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1017261445, now seen corresponding path program 1 times [2025-02-08 06:11:40,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:40,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550288030] [2025-02-08 06:11:40,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:40,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:40,020 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 06:11:40,042 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 06:11:40,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:40,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 06:11:40,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:40,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550288030] [2025-02-08 06:11:40,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550288030] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:11:40,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:11:40,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 06:11:40,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134796701] [2025-02-08 06:11:40,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:11:40,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 06:11:40,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:40,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 06:11:40,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:11:40,271 INFO L87 Difference]: Start difference. First operand 212 states and 270 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:40,362 INFO L93 Difference]: Finished difference Result 219 states and 277 transitions. [2025-02-08 06:11:40,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:11:40,363 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-08 06:11:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:40,364 INFO L225 Difference]: With dead ends: 219 [2025-02-08 06:11:40,364 INFO L226 Difference]: Without dead ends: 219 [2025-02-08 06:11:40,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-08 06:11:40,365 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:40,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 152 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:11:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2025-02-08 06:11:40,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 209. [2025-02-08 06:11:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 184 states have (on average 1.233695652173913) internal successors, (227), 186 states have internal predecessors, (227), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-08 06:11:40,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 267 transitions. [2025-02-08 06:11:40,382 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 267 transitions. Word has length 20 [2025-02-08 06:11:40,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:40,383 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 267 transitions. [2025-02-08 06:11:40,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:40,383 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 267 transitions. [2025-02-08 06:11:40,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-08 06:11:40,386 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:40,386 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 1, 1, 1] [2025-02-08 06:11:40,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 06:11:40,387 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:40,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash 523509834, now seen corresponding path program 1 times [2025-02-08 06:11:40,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:40,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555604667] [2025-02-08 06:11:40,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:40,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:40,396 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 06:11:40,402 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 06:11:40,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:40,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:40,559 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:11:40,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:40,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555604667] [2025-02-08 06:11:40,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555604667] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:11:40,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426135207] [2025-02-08 06:11:40,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:40,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:11:40,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:11:40,562 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) [2025-02-08 06:11:40,565 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 [2025-02-08 06:11:40,600 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-08 06:11:40,618 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 06:11:40,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:40,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:40,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 06:11:40,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:11:40,826 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 26 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:40,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:11:40,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2025-02-08 06:11:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 26 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:41,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426135207] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:11:41,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:11:41,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 22 [2025-02-08 06:11:41,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328543448] [2025-02-08 06:11:41,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:11:41,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-08 06:11:41,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:41,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-08 06:11:41,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2025-02-08 06:11:41,090 INFO L87 Difference]: Start difference. First operand 209 states and 267 transitions. Second operand has 24 states, 23 states have (on average 3.0) internal successors, (69), 23 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) [2025-02-08 06:11:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:41,536 INFO L93 Difference]: Finished difference Result 292 states and 375 transitions. [2025-02-08 06:11:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:11:41,537 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.0) internal successors, (69), 23 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) Word has length 27 [2025-02-08 06:11:41,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:41,539 INFO L225 Difference]: With dead ends: 292 [2025-02-08 06:11:41,539 INFO L226 Difference]: Without dead ends: 292 [2025-02-08 06:11:41,539 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=262, Invalid=608, Unknown=0, NotChecked=0, Total=870 [2025-02-08 06:11:41,540 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 484 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:41,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 305 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:11:41,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2025-02-08 06:11:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 209. [2025-02-08 06:11:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 184 states have (on average 1.233695652173913) internal successors, (227), 186 states have internal predecessors, (227), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-02-08 06:11:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 267 transitions. [2025-02-08 06:11:41,549 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 267 transitions. Word has length 27 [2025-02-08 06:11:41,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:41,549 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 267 transitions. [2025-02-08 06:11:41,549 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.0) internal successors, (69), 23 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) [2025-02-08 06:11:41,549 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 267 transitions. [2025-02-08 06:11:41,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-08 06:11:41,551 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:41,551 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1] [2025-02-08 06:11:41,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-08 06:11:41,751 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,SelfDestructingSolverStorable9 [2025-02-08 06:11:41,752 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:41,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:41,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1380418660, now seen corresponding path program 3 times [2025-02-08 06:11:41,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:41,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184388846] [2025-02-08 06:11:41,752 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:11:41,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:41,761 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 11 equivalence classes. [2025-02-08 06:11:41,793 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 06:11:41,793 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-08 06:11:41,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:42,137 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:42,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:42,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184388846] [2025-02-08 06:11:42,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184388846] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:11:42,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557106110] [2025-02-08 06:11:42,138 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:11:42,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:11:42,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:11:42,140 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) [2025-02-08 06:11:42,142 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 [2025-02-08 06:11:42,187 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 33 statements into 11 equivalence classes. [2025-02-08 06:11:42,271 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 33 of 33 statements. [2025-02-08 06:11:42,272 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-08 06:11:42,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:42,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 06:11:42,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:11:42,288 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 [2025-02-08 06:11:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:42,707 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:11:43,296 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:43,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557106110] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:11:43,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:11:43,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 36 [2025-02-08 06:11:43,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586683861] [2025-02-08 06:11:43,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:11:43,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-08 06:11:43,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:43,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-08 06:11:43,299 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=971, Unknown=0, NotChecked=0, Total=1406 [2025-02-08 06:11:43,299 INFO L87 Difference]: Start difference. First operand 209 states and 267 transitions. Second operand has 38 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:45,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:45,544 INFO L93 Difference]: Finished difference Result 1385 states and 1799 transitions. [2025-02-08 06:11:45,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-08 06:11:45,545 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 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 33 [2025-02-08 06:11:45,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:45,554 INFO L225 Difference]: With dead ends: 1385 [2025-02-08 06:11:45,554 INFO L226 Difference]: Without dead ends: 1385 [2025-02-08 06:11:45,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1345, Invalid=3347, Unknown=0, NotChecked=0, Total=4692 [2025-02-08 06:11:45,557 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 1833 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 987 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:45,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 588 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 987 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 06:11:45,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1385 states. [2025-02-08 06:11:45,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1385 to 498. [2025-02-08 06:11:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 442 states have (on average 1.237556561085973) internal successors, (547), 444 states have internal predecessors, (547), 51 states have call successors, (51), 2 states have call predecessors, (51), 2 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2025-02-08 06:11:45,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 649 transitions. [2025-02-08 06:11:45,600 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 649 transitions. Word has length 33 [2025-02-08 06:11:45,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:45,602 INFO L471 AbstractCegarLoop]: Abstraction has 498 states and 649 transitions. [2025-02-08 06:11:45,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.675675675675676) internal successors, (99), 37 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:45,602 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 649 transitions. [2025-02-08 06:11:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 06:11:45,606 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:45,606 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:11:45,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 06:11:45,810 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,SelfDestructingSolverStorable10 [2025-02-08 06:11:45,810 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:45,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:45,810 INFO L85 PathProgramCache]: Analyzing trace with hash -71202759, now seen corresponding path program 1 times [2025-02-08 06:11:45,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:45,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090914429] [2025-02-08 06:11:45,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:45,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:45,821 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-08 06:11:45,832 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 06:11:45,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:45,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 196 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:46,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:46,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090914429] [2025-02-08 06:11:46,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090914429] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:11:46,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921196715] [2025-02-08 06:11:46,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:11:46,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:11:46,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:11:46,305 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) [2025-02-08 06:11:46,307 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 [2025-02-08 06:11:46,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-08 06:11:46,381 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 06:11:46,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:11:46,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:46,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-08 06:11:46,387 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:11:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 145 proven. 32 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-02-08 06:11:46,474 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:11:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 145 proven. 32 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2025-02-08 06:11:46,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921196715] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:11:46,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:11:46,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 15] total 36 [2025-02-08 06:11:46,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617774338] [2025-02-08 06:11:46,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:11:46,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-08 06:11:46,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:46,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-08 06:11:46,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=1016, Unknown=0, NotChecked=0, Total=1332 [2025-02-08 06:11:46,669 INFO L87 Difference]: Start difference. First operand 498 states and 649 transitions. Second operand has 37 states, 37 states have (on average 3.054054054054054) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:48,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:48,062 INFO L93 Difference]: Finished difference Result 1270 states and 1642 transitions. [2025-02-08 06:11:48,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-02-08 06:11:48,063 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 3.054054054054054) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 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 66 [2025-02-08 06:11:48,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:48,068 INFO L225 Difference]: With dead ends: 1270 [2025-02-08 06:11:48,068 INFO L226 Difference]: Without dead ends: 1270 [2025-02-08 06:11:48,070 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 115 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1323 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1392, Invalid=4010, Unknown=0, NotChecked=0, Total=5402 [2025-02-08 06:11:48,071 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 369 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:48,071 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1483 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1961 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-08 06:11:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2025-02-08 06:11:48,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 627. [2025-02-08 06:11:48,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 555 states have (on average 1.2126126126126127) internal successors, (673), 557 states have internal predecessors, (673), 67 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2025-02-08 06:11:48,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 807 transitions. [2025-02-08 06:11:48,114 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 807 transitions. Word has length 66 [2025-02-08 06:11:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:48,114 INFO L471 AbstractCegarLoop]: Abstraction has 627 states and 807 transitions. [2025-02-08 06:11:48,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 3.054054054054054) internal successors, (113), 36 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 807 transitions. [2025-02-08 06:11:48,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-08 06:11:48,118 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:48,118 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 1, 1] [2025-02-08 06:11:48,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 06:11:48,319 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,SelfDestructingSolverStorable11 [2025-02-08 06:11:48,319 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:48,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:48,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1581803804, now seen corresponding path program 4 times [2025-02-08 06:11:48,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:48,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970599344] [2025-02-08 06:11:48,320 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:11:48,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:48,334 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 69 statements into 2 equivalence classes. [2025-02-08 06:11:48,348 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-02-08 06:11:48,348 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:11:48,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:49,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:49,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970599344] [2025-02-08 06:11:49,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970599344] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:11:49,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292238641] [2025-02-08 06:11:49,139 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:11:49,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:11:49,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:11:49,141 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) [2025-02-08 06:11:49,143 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 [2025-02-08 06:11:49,198 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 69 statements into 2 equivalence classes. [2025-02-08 06:11:49,372 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 69 of 69 statements. [2025-02-08 06:11:49,373 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:11:49,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:49,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-02-08 06:11:49,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:11:49,386 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 [2025-02-08 06:11:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:50,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:11:51,438 INFO L134 CoverageAnalysis]: Checked inductivity of 737 backedges. 0 proven. 737 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:11:51,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292238641] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:11:51,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:11:51,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 70 [2025-02-08 06:11:51,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624076799] [2025-02-08 06:11:51,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:11:51,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2025-02-08 06:11:51,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:11:51,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2025-02-08 06:11:51,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1224, Invalid=3888, Unknown=0, NotChecked=0, Total=5112 [2025-02-08 06:11:51,441 INFO L87 Difference]: Start difference. First operand 627 states and 807 transitions. Second operand has 72 states, 71 states have (on average 2.915492957746479) internal successors, (207), 71 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:59,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:11:59,050 INFO L93 Difference]: Finished difference Result 1985 states and 2570 transitions. [2025-02-08 06:11:59,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-08 06:11:59,051 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.915492957746479) internal successors, (207), 71 states have internal predecessors, (207), 0 states have call successors, (0), 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 [2025-02-08 06:11:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:11:59,059 INFO L225 Difference]: With dead ends: 1985 [2025-02-08 06:11:59,059 INFO L226 Difference]: Without dead ends: 1985 [2025-02-08 06:11:59,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2643 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2786, Invalid=5956, Unknown=0, NotChecked=0, Total=8742 [2025-02-08 06:11:59,062 INFO L435 NwaCegarLoop]: 283 mSDtfsCounter, 6232 mSDsluCounter, 6941 mSDsCounter, 0 mSdLazyCounter, 14229 mSolverCounterSat, 2016 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6280 SdHoareTripleChecker+Valid, 7224 SdHoareTripleChecker+Invalid, 16245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2016 IncrementalHoareTripleChecker+Valid, 14229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2025-02-08 06:11:59,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6280 Valid, 7224 Invalid, 16245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2016 Valid, 14229 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2025-02-08 06:11:59,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2025-02-08 06:11:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 951. [2025-02-08 06:11:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 847 states have (on average 1.229043683589138) internal successors, (1041), 849 states have internal predecessors, (1041), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2025-02-08 06:11:59,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1239 transitions. [2025-02-08 06:11:59,093 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1239 transitions. Word has length 69 [2025-02-08 06:11:59,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:11:59,094 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1239 transitions. [2025-02-08 06:11:59,094 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.915492957746479) internal successors, (207), 71 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:11:59,094 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1239 transitions. [2025-02-08 06:11:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-08 06:11:59,096 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:11:59,096 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 7, 6, 6, 6, 1, 1, 1] [2025-02-08 06:11:59,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 06:11:59,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:11:59,297 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:11:59,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:11:59,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1599060446, now seen corresponding path program 2 times [2025-02-08 06:11:59,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:11:59,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104073518] [2025-02-08 06:11:59,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:11:59,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:11:59,309 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-02-08 06:11:59,331 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 06:11:59,331 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:11:59,331 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:59,681 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2025-02-08 06:11:59,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:11:59,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104073518] [2025-02-08 06:11:59,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104073518] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:11:59,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295436579] [2025-02-08 06:11:59,682 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:11:59,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:11:59,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:11:59,684 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) [2025-02-08 06:11:59,687 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 [2025-02-08 06:11:59,744 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-02-08 06:11:59,792 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-08 06:11:59,792 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:11:59,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:11:59,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 06:11:59,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:11:59,806 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 [2025-02-08 06:12:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2025-02-08 06:12:00,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:12:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2025-02-08 06:12:00,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295436579] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:12:00,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:12:00,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2025-02-08 06:12:00,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116143685] [2025-02-08 06:12:00,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:12:00,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-08 06:12:00,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:12:00,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-08 06:12:00,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2025-02-08 06:12:00,651 INFO L87 Difference]: Start difference. First operand 951 states and 1239 transitions. Second operand has 26 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:12:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:12:01,417 INFO L93 Difference]: Finished difference Result 1138 states and 1482 transitions. [2025-02-08 06:12:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 06:12:01,418 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2025-02-08 06:12:01,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:12:01,423 INFO L225 Difference]: With dead ends: 1138 [2025-02-08 06:12:01,423 INFO L226 Difference]: Without dead ends: 1138 [2025-02-08 06:12:01,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 06:12:01,424 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 1081 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:12:01,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 755 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 06:12:01,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2025-02-08 06:12:01,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 951. [2025-02-08 06:12:01,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 847 states have (on average 1.229043683589138) internal successors, (1041), 849 states have internal predecessors, (1041), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2025-02-08 06:12:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1239 transitions. [2025-02-08 06:12:01,449 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1239 transitions. Word has length 97 [2025-02-08 06:12:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:12:01,450 INFO L471 AbstractCegarLoop]: Abstraction has 951 states and 1239 transitions. [2025-02-08 06:12:01,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.72) internal successors, (93), 25 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:12:01,451 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1239 transitions. [2025-02-08 06:12:01,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-08 06:12:01,454 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:12:01,454 INFO L218 NwaCegarLoop]: trace histogram [23, 23, 23, 15, 14, 14, 14, 1, 1, 1] [2025-02-08 06:12:01,462 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 06:12:01,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:12:01,655 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:12:01,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:12:01,655 INFO L85 PathProgramCache]: Analyzing trace with hash 54398342, now seen corresponding path program 3 times [2025-02-08 06:12:01,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:12:01,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252132172] [2025-02-08 06:12:01,655 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:12:01,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:12:01,670 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 129 statements into 24 equivalence classes. [2025-02-08 06:12:01,674 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 11 of 129 statements. [2025-02-08 06:12:01,674 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 06:12:01,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:12:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 85 proven. 14 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2025-02-08 06:12:01,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:12:01,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252132172] [2025-02-08 06:12:01,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252132172] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:12:01,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552995883] [2025-02-08 06:12:01,740 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:12:01,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:12:01,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:12:01,742 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) [2025-02-08 06:12:01,744 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 [2025-02-08 06:12:01,806 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 129 statements into 24 equivalence classes. [2025-02-08 06:12:01,813 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 11 of 129 statements. [2025-02-08 06:12:01,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 06:12:01,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:12:01,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-08 06:12:01,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:12:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 85 proven. 14 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2025-02-08 06:12:01,917 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:12:02,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 45 proven. 54 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2025-02-08 06:12:02,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552995883] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:12:02,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:12:02,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-08 06:12:02,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023510639] [2025-02-08 06:12:02,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:12:02,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-08 06:12:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:12:02,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-08 06:12:02,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2025-02-08 06:12:02,242 INFO L87 Difference]: Start difference. First operand 951 states and 1239 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 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) [2025-02-08 06:12:02,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:12:02,369 INFO L93 Difference]: Finished difference Result 957 states and 1247 transitions. [2025-02-08 06:12:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:12:02,370 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 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 129 [2025-02-08 06:12:02,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:12:02,371 INFO L225 Difference]: With dead ends: 957 [2025-02-08 06:12:02,371 INFO L226 Difference]: Without dead ends: 142 [2025-02-08 06:12:02,371 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2025-02-08 06:12:02,372 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 139 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:12:02,372 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 56 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:12:02,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2025-02-08 06:12:02,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2025-02-08 06:12:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 1.0070921985815602) internal successors, (142), 141 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) [2025-02-08 06:12:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2025-02-08 06:12:02,375 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 129 [2025-02-08 06:12:02,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:12:02,375 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2025-02-08 06:12:02,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 14 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) [2025-02-08 06:12:02,375 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2025-02-08 06:12:02,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-02-08 06:12:02,376 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:12:02,376 INFO L218 NwaCegarLoop]: trace histogram [47, 46, 46, 1, 1] [2025-02-08 06:12:02,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 06:12:02,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:12:02,580 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:12:02,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:12:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1435630564, now seen corresponding path program 5 times [2025-02-08 06:12:02,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:12:02,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996914050] [2025-02-08 06:12:02,580 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:12:02,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:12:02,602 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 141 statements into 47 equivalence classes. [2025-02-08 06:12:02,885 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 141 of 141 statements. [2025-02-08 06:12:02,885 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-02-08 06:12:02,885 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:12:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:12:04,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:12:04,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996914050] [2025-02-08 06:12:04,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996914050] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:12:04,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077405109] [2025-02-08 06:12:04,936 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:12:04,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:12:04,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:12:04,938 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) [2025-02-08 06:12:04,939 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 [2025-02-08 06:12:05,014 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 141 statements into 47 equivalence classes. [2025-02-08 06:12:20,933 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 141 of 141 statements. [2025-02-08 06:12:20,934 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-02-08 06:12:20,934 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:12:20,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 99 conjuncts are in the unsatisfiable core [2025-02-08 06:12:20,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:12:20,960 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 [2025-02-08 06:12:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:12:24,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:12:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3197 backedges. 0 proven. 3197 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:12:29,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077405109] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:12:29,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:12:29,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47, 47] total 142 [2025-02-08 06:12:29,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029061379] [2025-02-08 06:12:29,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:12:29,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 144 states [2025-02-08 06:12:29,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:12:29,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants. [2025-02-08 06:12:29,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4704, Invalid=15888, Unknown=0, NotChecked=0, Total=20592 [2025-02-08 06:12:29,575 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand has 144 states, 143 states have (on average 2.958041958041958) internal successors, (423), 143 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:12:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:12:47,077 INFO L93 Difference]: Finished difference Result 286 states and 286 transitions. [2025-02-08 06:12:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-08 06:12:47,077 INFO L78 Accepts]: Start accepts. Automaton has has 144 states, 143 states have (on average 2.958041958041958) internal successors, (423), 143 states have internal predecessors, (423), 0 states have call successors, (0), 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 141 [2025-02-08 06:12:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:12:47,078 INFO L225 Difference]: With dead ends: 286 [2025-02-08 06:12:47,078 INFO L226 Difference]: Without dead ends: 286 [2025-02-08 06:12:47,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6672 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=15842, Invalid=40090, Unknown=0, NotChecked=0, Total=55932 [2025-02-08 06:12:47,085 INFO L435 NwaCegarLoop]: 2 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13538 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 13541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2025-02-08 06:12:47,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 2 Invalid, 13541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13538 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2025-02-08 06:12:47,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2025-02-08 06:12:47,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2025-02-08 06:12:47,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 1.0035087719298246) internal successors, (286), 285 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:12:47,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 286 transitions. [2025-02-08 06:12:47,089 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 286 transitions. Word has length 141 [2025-02-08 06:12:47,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:12:47,089 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 286 transitions. [2025-02-08 06:12:47,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 144 states, 143 states have (on average 2.958041958041958) internal successors, (423), 143 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:12:47,090 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 286 transitions. [2025-02-08 06:12:47,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2025-02-08 06:12:47,092 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:12:47,092 INFO L218 NwaCegarLoop]: trace histogram [95, 94, 94, 1, 1] [2025-02-08 06:12:47,115 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-08 06:12:47,292 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,SelfDestructingSolverStorable15 [2025-02-08 06:12:47,293 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-02-08 06:12:47,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:12:47,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1968192028, now seen corresponding path program 6 times [2025-02-08 06:12:47,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:12:47,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130502966] [2025-02-08 06:12:47,293 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:12:47,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:12:47,334 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 285 statements into 95 equivalence classes. [2025-02-08 06:12:48,488 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) and asserted 285 of 285 statements. [2025-02-08 06:12:48,488 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2025-02-08 06:12:48,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:12:55,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13301 backedges. 0 proven. 13301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:12:55,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:12:55,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130502966] [2025-02-08 06:12:55,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130502966] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:12:55,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358602390] [2025-02-08 06:12:55,429 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:12:55,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:12:55,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:12:55,431 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) [2025-02-08 06:12:55,432 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 [2025-02-08 06:12:55,548 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 285 statements into 95 equivalence classes.