./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-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-memsafety/openbsd_cstrcat-alloca-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 8688e0efa9d37c2205606fbd307da42d83b0f0e2936dd15336b8b67e136d86b0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 06:13:20,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:13:20,474 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 06:13:20,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:13:20,485 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:13:20,505 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:13:20,506 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:13:20,506 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:13:20,507 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:13:20,507 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:13:20,507 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:13:20,508 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:13:20,508 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:13:20,508 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:13:20,508 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:13:20,509 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:13:20,509 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 06:13:20,509 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:13:20,509 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 06:13:20,509 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:13:20,509 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:13:20,509 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:13:20,509 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:13:20,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:13:20,509 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:13:20,509 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:13:20,510 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 06:13:20,510 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:13:20,510 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:13:20,510 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:13:20,510 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:13:20,510 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:13:20,510 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:13:20,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:13:20,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:13:20,511 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:13:20,511 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 06:13:20,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 06:13:20,511 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:13:20,511 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:13:20,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:13:20,511 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:13:20,511 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 -> 8688e0efa9d37c2205606fbd307da42d83b0f0e2936dd15336b8b67e136d86b0 [2025-02-08 06:13:20,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:13:20,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:13:20,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:13:20,753 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:13:20,754 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:13:20,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i [2025-02-08 06:13:22,051 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0341517ed/094c84d1287f4345be69a3144a72f7c3/FLAGb1634206e [2025-02-08 06:13:22,364 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:13:22,365 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrcat-alloca-2.i [2025-02-08 06:13:22,380 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0341517ed/094c84d1287f4345be69a3144a72f7c3/FLAGb1634206e [2025-02-08 06:13:22,397 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/0341517ed/094c84d1287f4345be69a3144a72f7c3 [2025-02-08 06:13:22,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:13:22,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:13:22,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:13:22,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:13:22,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:13:22,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a3da3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22, skipping insertion in model container [2025-02-08 06:13:22,409 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,441 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:13:22,659 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 06:13:22,660 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-02-08 06:13:22,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:13:22,672 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 06:13:22,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:13:22,727 INFO L204 MainTranslator]: Completed translation [2025-02-08 06:13:22,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22 WrapperNode [2025-02-08 06:13:22,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:13:22,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 06:13:22,729 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 06:13:22,729 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 06:13:22,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,746 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,760 INFO L138 Inliner]: procedures = 117, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2025-02-08 06:13:22,761 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 06:13:22,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 06:13:22,761 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 06:13:22,762 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 06:13:22,766 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,766 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,768 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,777 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [4, 3]. 57 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 5 writes are split as follows [3, 2]. [2025-02-08 06:13:22,778 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,778 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,783 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,784 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,785 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 06:13:22,786 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 06:13:22,786 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 06:13:22,787 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 06:13:22,787 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (1/1) ... [2025-02-08 06:13:22,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:13:22,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:22,823 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 06:13:22,828 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 06:13:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 06:13:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 06:13:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 06:13:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 06:13:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 06:13:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 06:13:22,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 06:13:22,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 06:13:22,912 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 06:13:22,914 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 06:13:23,047 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L535: call ULTIMATE.dealloc(main_#t~malloc10#1.base, main_#t~malloc10#1.offset);havoc main_#t~malloc10#1.base, main_#t~malloc10#1.offset;call ULTIMATE.dealloc(main_#t~malloc11#1.base, main_#t~malloc11#1.offset);havoc main_#t~malloc11#1.base, main_#t~malloc11#1.offset; [2025-02-08 06:13:23,062 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2025-02-08 06:13:23,062 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 06:13:23,068 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 06:13:23,068 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 06:13:23,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:13:23 BoogieIcfgContainer [2025-02-08 06:13:23,069 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 06:13:23,070 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 06:13:23,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 06:13:23,074 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 06:13:23,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 06:13:22" (1/3) ... [2025-02-08 06:13:23,074 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4360e811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:13:23, skipping insertion in model container [2025-02-08 06:13:23,074 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:22" (2/3) ... [2025-02-08 06:13:23,075 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4360e811 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:13:23, skipping insertion in model container [2025-02-08 06:13:23,075 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:13:23" (3/3) ... [2025-02-08 06:13:23,075 INFO L128 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcat-alloca-2.i [2025-02-08 06:13:23,085 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 06:13:23,086 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG openbsd_cstrcat-alloca-2.i that has 1 procedures, 40 locations, 1 initial locations, 4 loop locations, and 15 error locations. [2025-02-08 06:13:23,111 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 06:13:23,121 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;@51302d99, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 06:13:23,122 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-02-08 06:13:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:13:23,131 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:23,131 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:13:23,131 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:23,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:23,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1811929295, now seen corresponding path program 1 times [2025-02-08 06:13:23,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:23,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169570263] [2025-02-08 06:13:23,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:23,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:23,196 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:13:23,207 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:13:23,207 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:23,207 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:23,345 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 06:13:23,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:23,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169570263] [2025-02-08 06:13:23,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169570263] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:23,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:23,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:13:23,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507894059] [2025-02-08 06:13:23,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:23,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:23,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:23,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:23,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:23,369 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 39 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:23,461 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2025-02-08 06:13:23,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:23,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-08 06:13:23,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:23,470 INFO L225 Difference]: With dead ends: 56 [2025-02-08 06:13:23,470 INFO L226 Difference]: Without dead ends: 54 [2025-02-08 06:13:23,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:23,473 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:23,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 142 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:23,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-08 06:13:23,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 41. [2025-02-08 06:13:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 26 states have (on average 1.9230769230769231) internal successors, (50), 40 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 06:13:23,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2025-02-08 06:13:23,496 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 6 [2025-02-08 06:13:23,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:23,496 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2025-02-08 06:13:23,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2025-02-08 06:13:23,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:13:23,496 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:23,496 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:13:23,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 06:13:23,497 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:23,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:23,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1811928334, now seen corresponding path program 1 times [2025-02-08 06:13:23,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:23,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805174961] [2025-02-08 06:13:23,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:23,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:23,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:13:23,518 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:13:23,518 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:23,518 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:23,532 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 06:13:23,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:23,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805174961] [2025-02-08 06:13:23,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805174961] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:23,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:23,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-02-08 06:13:23,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053181542] [2025-02-08 06:13:23,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:23,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:13:23,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:23,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:13:23,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:13:23,534 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:23,557 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2025-02-08 06:13:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:13:23,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-08 06:13:23,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:23,558 INFO L225 Difference]: With dead ends: 42 [2025-02-08 06:13:23,558 INFO L226 Difference]: Without dead ends: 41 [2025-02-08 06:13:23,559 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 06:13:23,559 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 3 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:23,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 64 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:23,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-08 06:13:23,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2025-02-08 06:13:23,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.9130434782608696) internal successors, (44), 37 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2025-02-08 06:13:23,562 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 6 [2025-02-08 06:13:23,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:23,562 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2025-02-08 06:13:23,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2025-02-08 06:13:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:13:23,563 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:23,563 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:23,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 06:13:23,563 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:23,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:23,564 INFO L85 PathProgramCache]: Analyzing trace with hash -335230064, now seen corresponding path program 1 times [2025-02-08 06:13:23,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:23,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658637748] [2025-02-08 06:13:23,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:23,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:23,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:13:23,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:13:23,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:23,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:23,638 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 06:13:23,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:23,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658637748] [2025-02-08 06:13:23,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658637748] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:23,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:23,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:23,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53832217] [2025-02-08 06:13:23,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:23,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:23,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:23,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:23,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:23,640 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:23,661 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2025-02-08 06:13:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:13:23,661 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:13:23,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:23,662 INFO L225 Difference]: With dead ends: 49 [2025-02-08 06:13:23,662 INFO L226 Difference]: Without dead ends: 49 [2025-02-08 06:13:23,662 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 06:13:23,663 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:23,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 109 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:23,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-08 06:13:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2025-02-08 06:13:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 06:13:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2025-02-08 06:13:23,666 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 7 [2025-02-08 06:13:23,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:23,666 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2025-02-08 06:13:23,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,666 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2025-02-08 06:13:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:13:23,666 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:23,666 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:23,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 06:13:23,667 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:23,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:23,667 INFO L85 PathProgramCache]: Analyzing trace with hash -306600913, now seen corresponding path program 1 times [2025-02-08 06:13:23,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:23,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154754340] [2025-02-08 06:13:23,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:23,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:23,675 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:13:23,688 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:13:23,688 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:23,688 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:23,783 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 06:13:23,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:23,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154754340] [2025-02-08 06:13:23,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154754340] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:23,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:23,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:13:23,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661451671] [2025-02-08 06:13:23,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:23,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:23,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:23,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:23,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:23,786 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:23,831 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2025-02-08 06:13:23,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:23,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:13:23,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:23,832 INFO L225 Difference]: With dead ends: 48 [2025-02-08 06:13:23,832 INFO L226 Difference]: Without dead ends: 48 [2025-02-08 06:13:23,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:23,833 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 2 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:23,833 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 147 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:23,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-02-08 06:13:23,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2025-02-08 06:13:23,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 06:13:23,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2025-02-08 06:13:23,838 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 7 [2025-02-08 06:13:23,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:23,839 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2025-02-08 06:13:23,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,839 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2025-02-08 06:13:23,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:13:23,839 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:23,839 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:23,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 06:13:23,839 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:23,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:23,840 INFO L85 PathProgramCache]: Analyzing trace with hash -305677392, now seen corresponding path program 1 times [2025-02-08 06:13:23,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:23,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236342954] [2025-02-08 06:13:23,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:23,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:23,847 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:13:23,867 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:13:23,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:23,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:23,951 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 06:13:23,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:23,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236342954] [2025-02-08 06:13:23,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236342954] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:23,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:23,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:13:23,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108985194] [2025-02-08 06:13:23,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:23,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:13:23,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:23,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:13:23,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:13:23,952 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:23,973 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2025-02-08 06:13:23,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:13:23,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:13:23,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:23,974 INFO L225 Difference]: With dead ends: 40 [2025-02-08 06:13:23,974 INFO L226 Difference]: Without dead ends: 40 [2025-02-08 06:13:23,974 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:13:23,975 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 13 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:23,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 48 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:23,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-02-08 06:13:23,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-02-08 06:13:23,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 39 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2025-02-08 06:13:23,978 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 7 [2025-02-08 06:13:23,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:23,978 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2025-02-08 06:13:23,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2025-02-08 06:13:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:13:23,978 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:23,978 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:23,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 06:13:23,978 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:23,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:23,979 INFO L85 PathProgramCache]: Analyzing trace with hash -305677391, now seen corresponding path program 1 times [2025-02-08 06:13:23,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:23,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455551114] [2025-02-08 06:13:23,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:23,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:23,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:13:23,990 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:13:23,990 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:23,990 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:24,148 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 06:13:24,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:24,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455551114] [2025-02-08 06:13:24,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455551114] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:24,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:24,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:24,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768091962] [2025-02-08 06:13:24,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:24,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:13:24,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:24,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:13:24,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:24,150 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:24,258 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2025-02-08 06:13:24,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:13:24,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:13:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:24,259 INFO L225 Difference]: With dead ends: 44 [2025-02-08 06:13:24,259 INFO L226 Difference]: Without dead ends: 44 [2025-02-08 06:13:24,259 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:13:24,260 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 33 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:24,260 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 101 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:24,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-08 06:13:24,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2025-02-08 06:13:24,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.7586206896551724) internal successors, (51), 41 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:24,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2025-02-08 06:13:24,262 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 7 [2025-02-08 06:13:24,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:24,262 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2025-02-08 06:13:24,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:24,262 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2025-02-08 06:13:24,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 06:13:24,263 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:24,263 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:24,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 06:13:24,263 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:24,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:24,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1802202287, now seen corresponding path program 1 times [2025-02-08 06:13:24,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:24,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652793408] [2025-02-08 06:13:24,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:24,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:24,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 06:13:24,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 06:13:24,270 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:24,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:24,290 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 06:13:24,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:24,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652793408] [2025-02-08 06:13:24,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652793408] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:24,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:24,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:24,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315729510] [2025-02-08 06:13:24,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:24,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:24,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:24,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:24,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:24,292 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:24,309 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2025-02-08 06:13:24,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:13:24,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2025-02-08 06:13:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:24,310 INFO L225 Difference]: With dead ends: 56 [2025-02-08 06:13:24,310 INFO L226 Difference]: Without dead ends: 56 [2025-02-08 06:13:24,310 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 06:13:24,311 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:24,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 102 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:24,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-08 06:13:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2025-02-08 06:13:24,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 38 states have (on average 1.6578947368421053) internal successors, (63), 50 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:24,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2025-02-08 06:13:24,313 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 8 [2025-02-08 06:13:24,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:24,313 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2025-02-08 06:13:24,313 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:24,313 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2025-02-08 06:13:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 06:13:24,314 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:24,314 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:24,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 06:13:24,314 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:24,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1802202446, now seen corresponding path program 1 times [2025-02-08 06:13:24,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:24,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762194207] [2025-02-08 06:13:24,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:24,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:24,318 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 06:13:24,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 06:13:24,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:24,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:24,408 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 06:13:24,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:24,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762194207] [2025-02-08 06:13:24,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762194207] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:24,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:24,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:13:24,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656009114] [2025-02-08 06:13:24,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:24,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:24,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:24,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:24,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:24,410 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:24,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:24,430 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2025-02-08 06:13:24,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:13:24,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2025-02-08 06:13:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:24,434 INFO L225 Difference]: With dead ends: 63 [2025-02-08 06:13:24,434 INFO L226 Difference]: Without dead ends: 63 [2025-02-08 06:13:24,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:24,435 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 12 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:24,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 75 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:24,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-08 06:13:24,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2025-02-08 06:13:24,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 60 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:24,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions. [2025-02-08 06:13:24,441 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 8 [2025-02-08 06:13:24,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:24,442 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 77 transitions. [2025-02-08 06:13:24,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:24,442 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions. [2025-02-08 06:13:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 06:13:24,442 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:24,442 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:24,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 06:13:24,442 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:24,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:24,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1801278766, now seen corresponding path program 1 times [2025-02-08 06:13:24,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:24,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073829104] [2025-02-08 06:13:24,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:24,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:24,450 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 06:13:24,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 06:13:24,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:24,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:24,519 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 06:13:24,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:24,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073829104] [2025-02-08 06:13:24,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073829104] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:24,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:24,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 06:13:24,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548822897] [2025-02-08 06:13:24,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:24,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:13:24,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:24,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:13:24,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:24,522 INFO L87 Difference]: Start difference. First operand 61 states and 77 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:24,586 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2025-02-08 06:13:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:13:24,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2025-02-08 06:13:24,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:24,586 INFO L225 Difference]: With dead ends: 73 [2025-02-08 06:13:24,587 INFO L226 Difference]: Without dead ends: 73 [2025-02-08 06:13:24,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-02-08 06:13:24,587 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:24,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 139 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:24,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-02-08 06:13:24,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 60. [2025-02-08 06:13:24,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 47 states have (on average 1.6382978723404256) internal successors, (77), 59 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:24,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 77 transitions. [2025-02-08 06:13:24,593 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 77 transitions. Word has length 8 [2025-02-08 06:13:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:24,593 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 77 transitions. [2025-02-08 06:13:24,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 77 transitions. [2025-02-08 06:13:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 06:13:24,594 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:24,594 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:24,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 06:13:24,594 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:24,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:24,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1772649615, now seen corresponding path program 1 times [2025-02-08 06:13:24,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:24,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750011573] [2025-02-08 06:13:24,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:24,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:24,602 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 06:13:24,609 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 06:13:24,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:24,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:24,647 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 06:13:24,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:24,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750011573] [2025-02-08 06:13:24,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750011573] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:24,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:24,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:13:24,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168599037] [2025-02-08 06:13:24,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:24,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:13:24,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:24,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:13:24,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:13:24,648 INFO L87 Difference]: Start difference. First operand 60 states and 77 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:24,675 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2025-02-08 06:13:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:13:24,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2025-02-08 06:13:24,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:24,675 INFO L225 Difference]: With dead ends: 58 [2025-02-08 06:13:24,675 INFO L226 Difference]: Without dead ends: 58 [2025-02-08 06:13:24,676 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:13:24,676 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:24,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 48 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:24,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-08 06:13:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-02-08 06:13:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.574468085106383) internal successors, (74), 57 states have internal predecessors, (74), 0 states have call successors, (0), 0 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 06:13:24,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 74 transitions. [2025-02-08 06:13:24,678 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 74 transitions. Word has length 8 [2025-02-08 06:13:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:24,679 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 74 transitions. [2025-02-08 06:13:24,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:24,679 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 74 transitions. [2025-02-08 06:13:24,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 06:13:24,679 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:24,679 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:24,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 06:13:24,682 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:24,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:24,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1772649614, now seen corresponding path program 1 times [2025-02-08 06:13:24,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:24,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658394840] [2025-02-08 06:13:24,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:24,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:24,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 06:13:24,689 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 06:13:24,689 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:24,689 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:24,772 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 06:13:24,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:24,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658394840] [2025-02-08 06:13:24,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658394840] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:24,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:24,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:13:24,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218543962] [2025-02-08 06:13:24,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:24,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 06:13:24,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:24,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 06:13:24,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:24,774 INFO L87 Difference]: Start difference. First operand 58 states and 74 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:24,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:24,828 INFO L93 Difference]: Finished difference Result 64 states and 82 transitions. [2025-02-08 06:13:24,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 06:13:24,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2025-02-08 06:13:24,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:24,829 INFO L225 Difference]: With dead ends: 64 [2025-02-08 06:13:24,829 INFO L226 Difference]: Without dead ends: 64 [2025-02-08 06:13:24,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:13:24,830 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 20 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:24,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 79 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:24,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-08 06:13:24,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2025-02-08 06:13:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.5686274509803921) internal successors, (80), 61 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:24,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2025-02-08 06:13:24,832 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 8 [2025-02-08 06:13:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:24,832 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2025-02-08 06:13:24,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:24,832 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2025-02-08 06:13:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 06:13:24,833 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:24,833 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:24,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 06:13:24,833 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:24,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:24,835 INFO L85 PathProgramCache]: Analyzing trace with hash -914698765, now seen corresponding path program 1 times [2025-02-08 06:13:24,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:24,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224187428] [2025-02-08 06:13:24,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:24,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:24,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 06:13:24,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 06:13:24,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:24,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:24,960 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 06:13:24,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:24,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224187428] [2025-02-08 06:13:24,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224187428] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:24,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:24,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:13:24,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526275968] [2025-02-08 06:13:24,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:24,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:13:24,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:24,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:13:24,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:24,962 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:25,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:25,006 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2025-02-08 06:13:25,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:13:25,007 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2025-02-08 06:13:25,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:25,007 INFO L225 Difference]: With dead ends: 65 [2025-02-08 06:13:25,007 INFO L226 Difference]: Without dead ends: 65 [2025-02-08 06:13:25,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:25,008 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 30 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:25,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 107 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:25,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-08 06:13:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2025-02-08 06:13:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 58 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2025-02-08 06:13:25,010 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 8 [2025-02-08 06:13:25,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:25,010 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2025-02-08 06:13:25,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:25,010 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2025-02-08 06:13:25,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 06:13:25,010 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:25,011 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:25,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 06:13:25,011 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:25,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:25,011 INFO L85 PathProgramCache]: Analyzing trace with hash -886069614, now seen corresponding path program 1 times [2025-02-08 06:13:25,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:25,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624102718] [2025-02-08 06:13:25,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:25,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:25,015 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 06:13:25,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 06:13:25,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:25,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:25,113 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 06:13:25,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:25,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624102718] [2025-02-08 06:13:25,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624102718] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:25,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:25,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:13:25,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059069161] [2025-02-08 06:13:25,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:25,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:25,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:25,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:25,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:25,116 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:25,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:25,143 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2025-02-08 06:13:25,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:25,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2025-02-08 06:13:25,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:25,144 INFO L225 Difference]: With dead ends: 58 [2025-02-08 06:13:25,144 INFO L226 Difference]: Without dead ends: 58 [2025-02-08 06:13:25,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:25,144 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:25,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 84 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:25,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-08 06:13:25,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2025-02-08 06:13:25,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 41 states have (on average 1.5853658536585367) internal successors, (65), 50 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 06:13:25,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2025-02-08 06:13:25,146 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 8 [2025-02-08 06:13:25,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:25,146 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2025-02-08 06:13:25,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 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 06:13:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2025-02-08 06:13:25,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 06:13:25,146 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:25,146 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:25,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 06:13:25,146 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:25,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:25,150 INFO L85 PathProgramCache]: Analyzing trace with hash -33701013, now seen corresponding path program 1 times [2025-02-08 06:13:25,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:25,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990947560] [2025-02-08 06:13:25,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:25,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:25,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 06:13:25,159 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 06:13:25,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:25,163 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:25,245 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 06:13:25,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:25,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990947560] [2025-02-08 06:13:25,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990947560] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:25,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:25,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:25,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778383937] [2025-02-08 06:13:25,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:25,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:25,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:25,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:25,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:25,247 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 06:13:25,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:25,291 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2025-02-08 06:13:25,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:25,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 06:13:25,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:25,292 INFO L225 Difference]: With dead ends: 57 [2025-02-08 06:13:25,292 INFO L226 Difference]: Without dead ends: 57 [2025-02-08 06:13:25,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:25,292 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:25,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 114 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-02-08 06:13:25,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2025-02-08 06:13:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 55 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 06:13:25,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2025-02-08 06:13:25,294 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 9 [2025-02-08 06:13:25,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:25,294 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2025-02-08 06:13:25,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 06:13:25,294 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2025-02-08 06:13:25,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 06:13:25,294 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:25,294 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:25,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 06:13:25,295 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:25,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:25,295 INFO L85 PathProgramCache]: Analyzing trace with hash -5071862, now seen corresponding path program 1 times [2025-02-08 06:13:25,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:25,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896367159] [2025-02-08 06:13:25,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:25,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:25,300 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 06:13:25,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 06:13:25,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:25,306 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:25,398 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 06:13:25,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:25,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896367159] [2025-02-08 06:13:25,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896367159] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:25,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:25,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:13:25,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609401396] [2025-02-08 06:13:25,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:25,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:13:25,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:25,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:13:25,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:25,399 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 06:13:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:25,441 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2025-02-08 06:13:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 06:13:25,441 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 06:13:25,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:25,442 INFO L225 Difference]: With dead ends: 61 [2025-02-08 06:13:25,442 INFO L226 Difference]: Without dead ends: 61 [2025-02-08 06:13:25,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:25,442 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 18 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:25,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 97 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-08 06:13:25,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2025-02-08 06:13:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 55 states have internal predecessors, (70), 0 states have call successors, (0), 0 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 06:13:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2025-02-08 06:13:25,444 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 9 [2025-02-08 06:13:25,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:25,444 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2025-02-08 06:13:25,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 06:13:25,444 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2025-02-08 06:13:25,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 06:13:25,444 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:25,444 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:25,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 06:13:25,444 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:25,449 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:25,449 INFO L85 PathProgramCache]: Analyzing trace with hash 853802668, now seen corresponding path program 1 times [2025-02-08 06:13:25,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:25,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278656112] [2025-02-08 06:13:25,449 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:25,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:25,454 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 06:13:25,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 06:13:25,459 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:25,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:25,556 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 06:13:25,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:25,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278656112] [2025-02-08 06:13:25,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278656112] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:25,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:25,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:25,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082339352] [2025-02-08 06:13:25,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:25,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:13:25,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:25,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:13:25,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:25,559 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 06:13:25,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:25,596 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2025-02-08 06:13:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:13:25,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 06:13:25,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:25,596 INFO L225 Difference]: With dead ends: 64 [2025-02-08 06:13:25,596 INFO L226 Difference]: Without dead ends: 64 [2025-02-08 06:13:25,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:25,597 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:25,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 102 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:25,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-08 06:13:25,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 53. [2025-02-08 06:13:25,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 43 states have (on average 1.558139534883721) internal successors, (67), 52 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:25,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 67 transitions. [2025-02-08 06:13:25,602 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 67 transitions. Word has length 9 [2025-02-08 06:13:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:25,602 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 67 transitions. [2025-02-08 06:13:25,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 06:13:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 67 transitions. [2025-02-08 06:13:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 06:13:25,602 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:25,602 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:25,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 06:13:25,603 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:25,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash 882431819, now seen corresponding path program 1 times [2025-02-08 06:13:25,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:25,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484716823] [2025-02-08 06:13:25,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:25,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:25,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 06:13:25,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 06:13:25,613 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:25,613 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:25,716 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 06:13:25,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:25,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484716823] [2025-02-08 06:13:25,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484716823] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:25,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:25,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:25,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296536217] [2025-02-08 06:13:25,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:25,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:13:25,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:25,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:13:25,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:25,718 INFO L87 Difference]: Start difference. First operand 53 states and 67 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 06:13:25,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:25,753 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2025-02-08 06:13:25,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:13:25,754 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-08 06:13:25,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:25,754 INFO L225 Difference]: With dead ends: 52 [2025-02-08 06:13:25,754 INFO L226 Difference]: Without dead ends: 52 [2025-02-08 06:13:25,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:25,755 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:25,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 82 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:25,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-08 06:13:25,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2025-02-08 06:13:25,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 49 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2025-02-08 06:13:25,756 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 9 [2025-02-08 06:13:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:25,757 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2025-02-08 06:13:25,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 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 06:13:25,757 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2025-02-08 06:13:25,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 06:13:25,757 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:25,757 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:25,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 06:13:25,757 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:25,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:25,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1104509482, now seen corresponding path program 1 times [2025-02-08 06:13:25,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:25,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135822466] [2025-02-08 06:13:25,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:25,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:25,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 06:13:25,765 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 06:13:25,765 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:25,765 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:25,900 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 06:13:25,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:25,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135822466] [2025-02-08 06:13:25,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135822466] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:25,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808037360] [2025-02-08 06:13:25,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:25,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:25,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:25,902 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 06:13:25,904 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 06:13:25,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 06:13:25,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 06:13:25,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:25,956 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:25,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 06:13:25,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:26,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:13:26,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2025-02-08 06:13:26,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2025-02-08 06:13:26,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:26,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:26,318 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:13:26,374 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 06:13:26,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808037360] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:26,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:26,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2025-02-08 06:13:26,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020238860] [2025-02-08 06:13:26,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:26,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:13:26,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:26,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:13:26,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:13:26,375 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:26,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:26,583 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2025-02-08 06:13:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:13:26,583 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-08 06:13:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:26,584 INFO L225 Difference]: With dead ends: 53 [2025-02-08 06:13:26,584 INFO L226 Difference]: Without dead ends: 53 [2025-02-08 06:13:26,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2025-02-08 06:13:26,585 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 25 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:26,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 186 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:26,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-08 06:13:26,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 45. [2025-02-08 06:13:26,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.5135135135135136) internal successors, (56), 44 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:26,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2025-02-08 06:13:26,586 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 10 [2025-02-08 06:13:26,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:26,586 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2025-02-08 06:13:26,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:26,587 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2025-02-08 06:13:26,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 06:13:26,587 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:26,587 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:26,594 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 06:13:26,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 06:13:26,790 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:26,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:26,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1913193263, now seen corresponding path program 1 times [2025-02-08 06:13:26,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:26,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948459616] [2025-02-08 06:13:26,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:26,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:26,795 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 06:13:26,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 06:13:26,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:26,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:26,912 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 06:13:26,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:26,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948459616] [2025-02-08 06:13:26,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948459616] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:26,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725109683] [2025-02-08 06:13:26,913 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:26,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:26,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:26,915 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 06:13:26,917 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 06:13:26,947 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 06:13:26,954 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 06:13:26,954 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:26,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:26,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 06:13:26,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:27,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-08 06:13:27,006 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 06:13:27,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:27,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:27,416 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 06:13:27,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725109683] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:27,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:27,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2025-02-08 06:13:27,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351596316] [2025-02-08 06:13:27,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:27,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 06:13:27,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:27,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 06:13:27,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2025-02-08 06:13:27,417 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 06:13:27,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:27,689 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2025-02-08 06:13:27,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:13:27,690 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 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 11 [2025-02-08 06:13:27,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:27,690 INFO L225 Difference]: With dead ends: 47 [2025-02-08 06:13:27,690 INFO L226 Difference]: Without dead ends: 47 [2025-02-08 06:13:27,690 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2025-02-08 06:13:27,691 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 13 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:27,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 254 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:13:27,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-08 06:13:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2025-02-08 06:13:27,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 41 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2025-02-08 06:13:27,695 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 11 [2025-02-08 06:13:27,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:27,695 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2025-02-08 06:13:27,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 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 06:13:27,695 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2025-02-08 06:13:27,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 06:13:27,695 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:27,695 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:27,707 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 06:13:27,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:27,896 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:27,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:27,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1035433165, now seen corresponding path program 1 times [2025-02-08 06:13:27,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:27,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767174536] [2025-02-08 06:13:27,897 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:27,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:27,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 06:13:27,911 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 06:13:27,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:27,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:27,938 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 06:13:27,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:27,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767174536] [2025-02-08 06:13:27,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767174536] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:27,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:27,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:13:27,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033257472] [2025-02-08 06:13:27,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:27,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:27,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:27,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:27,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:27,939 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 06:13:27,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:27,961 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2025-02-08 06:13:27,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:13:27,961 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2025-02-08 06:13:27,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:27,961 INFO L225 Difference]: With dead ends: 41 [2025-02-08 06:13:27,962 INFO L226 Difference]: Without dead ends: 41 [2025-02-08 06:13:27,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:27,962 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:27,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 45 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:27,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-08 06:13:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-02-08 06:13:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.457142857142857) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:27,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2025-02-08 06:13:27,963 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 12 [2025-02-08 06:13:27,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:27,964 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2025-02-08 06:13:27,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 06:13:27,964 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2025-02-08 06:13:27,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 06:13:27,964 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:27,964 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:27,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 06:13:27,964 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:27,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:27,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1035433166, now seen corresponding path program 1 times [2025-02-08 06:13:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5600452] [2025-02-08 06:13:27,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:27,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:27,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 06:13:27,971 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 06:13:27,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:27,971 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:28,037 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 06:13:28,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:28,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5600452] [2025-02-08 06:13:28,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5600452] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:28,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:28,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:13:28,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825685756] [2025-02-08 06:13:28,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:28,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:13:28,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:28,039 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:13:28,039 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:28,039 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 06:13:28,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:28,079 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2025-02-08 06:13:28,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 06:13:28,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2025-02-08 06:13:28,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:28,079 INFO L225 Difference]: With dead ends: 49 [2025-02-08 06:13:28,079 INFO L226 Difference]: Without dead ends: 49 [2025-02-08 06:13:28,080 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:28,080 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 18 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:28,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 78 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:28,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-08 06:13:28,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2025-02-08 06:13:28,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:28,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2025-02-08 06:13:28,082 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 12 [2025-02-08 06:13:28,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:28,082 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2025-02-08 06:13:28,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 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 06:13:28,082 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2025-02-08 06:13:28,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 06:13:28,082 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:28,083 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:28,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 06:13:28,083 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:28,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:28,083 INFO L85 PathProgramCache]: Analyzing trace with hash 134285603, now seen corresponding path program 1 times [2025-02-08 06:13:28,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:28,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392199416] [2025-02-08 06:13:28,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:28,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:28,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 06:13:28,090 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:13:28,090 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:28,090 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:28,122 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 06:13:28,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:28,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392199416] [2025-02-08 06:13:28,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392199416] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:28,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:28,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:28,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759568638] [2025-02-08 06:13:28,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:28,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:28,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:28,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:28,123 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:28,123 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:28,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:28,170 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2025-02-08 06:13:28,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:28,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 06:13:28,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:28,175 INFO L225 Difference]: With dead ends: 42 [2025-02-08 06:13:28,175 INFO L226 Difference]: Without dead ends: 42 [2025-02-08 06:13:28,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:28,176 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:28,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 64 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:28,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-08 06:13:28,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2025-02-08 06:13:28,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 41 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2025-02-08 06:13:28,177 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 15 [2025-02-08 06:13:28,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:28,177 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2025-02-08 06:13:28,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2025-02-08 06:13:28,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 06:13:28,178 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:28,178 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:28,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-08 06:13:28,178 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:28,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:28,178 INFO L85 PathProgramCache]: Analyzing trace with hash 134285604, now seen corresponding path program 1 times [2025-02-08 06:13:28,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:28,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390181648] [2025-02-08 06:13:28,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:28,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:28,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 06:13:28,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:13:28,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:28,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:28,316 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 06:13:28,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:28,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390181648] [2025-02-08 06:13:28,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390181648] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:28,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:28,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 06:13:28,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818315196] [2025-02-08 06:13:28,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:28,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 06:13:28,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:28,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 06:13:28,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:28,318 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:28,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:28,369 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2025-02-08 06:13:28,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:13:28,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 06:13:28,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:28,370 INFO L225 Difference]: With dead ends: 53 [2025-02-08 06:13:28,370 INFO L226 Difference]: Without dead ends: 53 [2025-02-08 06:13:28,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:13:28,371 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:28,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 106 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:28,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-08 06:13:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2025-02-08 06:13:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2025-02-08 06:13:28,372 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 15 [2025-02-08 06:13:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:28,372 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2025-02-08 06:13:28,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 7 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2025-02-08 06:13:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 06:13:28,373 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:28,373 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:28,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-08 06:13:28,373 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:28,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:28,373 INFO L85 PathProgramCache]: Analyzing trace with hash 134286853, now seen corresponding path program 1 times [2025-02-08 06:13:28,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:28,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024404153] [2025-02-08 06:13:28,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:28,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:28,378 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 06:13:28,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:13:28,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:28,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:28,516 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 06:13:28,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:28,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024404153] [2025-02-08 06:13:28,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024404153] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:28,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391815621] [2025-02-08 06:13:28,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:28,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:28,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:28,518 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 06:13:28,521 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 06:13:28,553 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 06:13:28,564 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:13:28,564 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:28,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:28,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-08 06:13:28,566 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:28,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:13:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:28,621 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:13:28,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391815621] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:28,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 06:13:28,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2025-02-08 06:13:28,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736126390] [2025-02-08 06:13:28,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:28,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:13:28,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:28,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:13:28,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2025-02-08 06:13:28,622 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:28,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:28,654 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2025-02-08 06:13:28,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:13:28,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 06:13:28,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:28,655 INFO L225 Difference]: With dead ends: 54 [2025-02-08 06:13:28,655 INFO L226 Difference]: Without dead ends: 54 [2025-02-08 06:13:28,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2025-02-08 06:13:28,655 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:28,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 122 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:28,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-08 06:13:28,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2025-02-08 06:13:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.3125) internal successors, (63), 52 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:28,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2025-02-08 06:13:28,657 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 15 [2025-02-08 06:13:28,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:28,657 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2025-02-08 06:13:28,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:28,658 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2025-02-08 06:13:28,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 06:13:28,658 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:28,658 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:28,665 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 06:13:28,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:28,859 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:28,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:28,859 INFO L85 PathProgramCache]: Analyzing trace with hash 263369572, now seen corresponding path program 1 times [2025-02-08 06:13:28,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:28,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579468140] [2025-02-08 06:13:28,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:28,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:28,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 06:13:28,871 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:13:28,871 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:28,871 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:28,989 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 06:13:28,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:28,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579468140] [2025-02-08 06:13:28,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579468140] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:28,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748617384] [2025-02-08 06:13:28,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:28,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:28,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:28,993 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 06:13:28,995 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 06:13:29,035 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 06:13:29,045 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:13:29,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:29,046 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:29,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 06:13:29,048 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:29,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:13:29,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:29,198 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:13:29,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748617384] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:29,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 06:13:29,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 15 [2025-02-08 06:13:29,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133486628] [2025-02-08 06:13:29,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:29,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 06:13:29,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:29,199 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 06:13:29,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2025-02-08 06:13:29,199 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:29,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:29,291 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2025-02-08 06:13:29,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:13:29,292 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 06:13:29,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:29,292 INFO L225 Difference]: With dead ends: 61 [2025-02-08 06:13:29,292 INFO L226 Difference]: Without dead ends: 61 [2025-02-08 06:13:29,293 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2025-02-08 06:13:29,293 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:29,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 138 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-08 06:13:29,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 50. [2025-02-08 06:13:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2025-02-08 06:13:29,294 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 15 [2025-02-08 06:13:29,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:29,294 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2025-02-08 06:13:29,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 9 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:29,294 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2025-02-08 06:13:29,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 06:13:29,295 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:29,295 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:29,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:29,495 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,SelfDestructingSolverStorable24 [2025-02-08 06:13:29,495 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:29,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:29,496 INFO L85 PathProgramCache]: Analyzing trace with hash -30033435, now seen corresponding path program 1 times [2025-02-08 06:13:29,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:29,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052161434] [2025-02-08 06:13:29,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:29,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:29,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 06:13:29,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:13:29,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:29,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:29,630 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 06:13:29,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:29,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052161434] [2025-02-08 06:13:29,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052161434] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:29,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596569127] [2025-02-08 06:13:29,630 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:29,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:29,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:29,632 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 06:13:29,633 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 06:13:29,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 06:13:29,677 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:13:29,677 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:29,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:29,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 06:13:29,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:29,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:13:29,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:29,743 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-08 06:13:29,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596569127] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:29,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-08 06:13:29,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 15 [2025-02-08 06:13:29,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066918981] [2025-02-08 06:13:29,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:29,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 06:13:29,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:29,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 06:13:29,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2025-02-08 06:13:29,744 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:29,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:29,794 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2025-02-08 06:13:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:13:29,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-02-08 06:13:29,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:29,795 INFO L225 Difference]: With dead ends: 63 [2025-02-08 06:13:29,795 INFO L226 Difference]: Without dead ends: 63 [2025-02-08 06:13:29,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:13:29,796 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:29,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 114 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-08 06:13:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2025-02-08 06:13:29,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.3478260869565217) internal successors, (62), 50 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:29,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2025-02-08 06:13:29,797 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 15 [2025-02-08 06:13:29,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:29,797 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2025-02-08 06:13:29,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:29,797 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2025-02-08 06:13:29,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 06:13:29,797 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:29,797 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:29,807 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 06:13:29,998 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,SelfDestructingSolverStorable25 [2025-02-08 06:13:29,998 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:29,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:29,998 INFO L85 PathProgramCache]: Analyzing trace with hash -132113626, now seen corresponding path program 1 times [2025-02-08 06:13:29,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:29,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100054652] [2025-02-08 06:13:29,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:29,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:30,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 06:13:30,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 06:13:30,007 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:30,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:30,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:30,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100054652] [2025-02-08 06:13:30,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100054652] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:30,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:30,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:30,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620724299] [2025-02-08 06:13:30,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:30,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:30,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:30,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:30,036 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:30,036 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 06:13:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:30,064 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2025-02-08 06:13:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:30,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-08 06:13:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:30,065 INFO L225 Difference]: With dead ends: 50 [2025-02-08 06:13:30,065 INFO L226 Difference]: Without dead ends: 50 [2025-02-08 06:13:30,065 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:30,065 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:30,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 57 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:30,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-08 06:13:30,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-02-08 06:13:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 46 states have (on average 1.326086956521739) internal successors, (61), 49 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:30,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 61 transitions. [2025-02-08 06:13:30,066 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 61 transitions. Word has length 16 [2025-02-08 06:13:30,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:30,066 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 61 transitions. [2025-02-08 06:13:30,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 06:13:30,067 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 61 transitions. [2025-02-08 06:13:30,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 06:13:30,067 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:30,067 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:30,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-08 06:13:30,067 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:30,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:30,067 INFO L85 PathProgramCache]: Analyzing trace with hash -132113625, now seen corresponding path program 1 times [2025-02-08 06:13:30,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:30,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137547950] [2025-02-08 06:13:30,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:30,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:30,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 06:13:30,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 06:13:30,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:30,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:30,163 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 06:13:30,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:30,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137547950] [2025-02-08 06:13:30,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137547950] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:30,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:30,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 06:13:30,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364557671] [2025-02-08 06:13:30,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:30,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 06:13:30,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:30,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 06:13:30,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:30,164 INFO L87 Difference]: Start difference. First operand 50 states and 61 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 06:13:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:30,221 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2025-02-08 06:13:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:13:30,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-08 06:13:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:30,221 INFO L225 Difference]: With dead ends: 55 [2025-02-08 06:13:30,221 INFO L226 Difference]: Without dead ends: 55 [2025-02-08 06:13:30,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:13:30,222 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 10 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:30,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 93 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-08 06:13:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2025-02-08 06:13:30,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.32) internal successors, (66), 53 states have internal predecessors, (66), 0 states have call successors, (0), 0 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 06:13:30,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2025-02-08 06:13:30,225 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 16 [2025-02-08 06:13:30,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:30,225 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2025-02-08 06:13:30,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 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 06:13:30,226 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2025-02-08 06:13:30,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-08 06:13:30,226 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:30,226 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:30,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-02-08 06:13:30,226 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:30,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:30,226 INFO L85 PathProgramCache]: Analyzing trace with hash 803568520, now seen corresponding path program 1 times [2025-02-08 06:13:30,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:30,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627311692] [2025-02-08 06:13:30,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:30,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:30,231 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 06:13:30,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 06:13:30,235 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:30,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:30,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:30,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627311692] [2025-02-08 06:13:30,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627311692] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:30,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492506752] [2025-02-08 06:13:30,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:30,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:30,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:30,357 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 06:13:30,357 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 06:13:30,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 06:13:30,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 06:13:30,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:30,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:30,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-08 06:13:30,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:30,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:30,527 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 5 treesize of output 3 [2025-02-08 06:13:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:30,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492506752] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:30,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:30,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2025-02-08 06:13:30,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389394082] [2025-02-08 06:13:30,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:30,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 06:13:30,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:30,548 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 06:13:30,548 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-02-08 06:13:30,548 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:30,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:30,673 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2025-02-08 06:13:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:13:30,673 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-02-08 06:13:30,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:30,674 INFO L225 Difference]: With dead ends: 66 [2025-02-08 06:13:30,674 INFO L226 Difference]: Without dead ends: 66 [2025-02-08 06:13:30,674 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2025-02-08 06:13:30,675 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 24 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:30,675 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 263 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:30,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-02-08 06:13:30,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2025-02-08 06:13:30,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 55 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:30,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2025-02-08 06:13:30,677 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 18 [2025-02-08 06:13:30,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:30,677 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2025-02-08 06:13:30,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 18 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:30,678 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2025-02-08 06:13:30,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 06:13:30,678 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:30,678 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:30,686 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 06:13:30,878 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,SelfDestructingSolverStorable28 [2025-02-08 06:13:30,879 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:30,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:30,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1607013601, now seen corresponding path program 1 times [2025-02-08 06:13:30,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:30,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697798259] [2025-02-08 06:13:30,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:30,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:30,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 06:13:30,891 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 06:13:30,891 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:30,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:30,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:30,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697798259] [2025-02-08 06:13:30,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697798259] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:30,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:30,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 06:13:30,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64590650] [2025-02-08 06:13:30,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:30,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 06:13:30,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:30,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 06:13:30,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:13:30,984 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:31,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:31,018 INFO L93 Difference]: Finished difference Result 90 states and 107 transitions. [2025-02-08 06:13:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:13:31,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-08 06:13:31,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:31,019 INFO L225 Difference]: With dead ends: 90 [2025-02-08 06:13:31,019 INFO L226 Difference]: Without dead ends: 90 [2025-02-08 06:13:31,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:13:31,019 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 11 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:31,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 145 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-02-08 06:13:31,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2025-02-08 06:13:31,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 87 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:31,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2025-02-08 06:13:31,024 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 19 [2025-02-08 06:13:31,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:31,024 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2025-02-08 06:13:31,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2025-02-08 06:13:31,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 06:13:31,024 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:31,024 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:31,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-02-08 06:13:31,024 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:31,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:31,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1607012930, now seen corresponding path program 1 times [2025-02-08 06:13:31,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:31,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125126825] [2025-02-08 06:13:31,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:31,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:31,029 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 06:13:31,034 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 06:13:31,034 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:31,034 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:31,143 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 06:13:31,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:31,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125126825] [2025-02-08 06:13:31,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125126825] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:31,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:31,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:13:31,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414983733] [2025-02-08 06:13:31,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:31,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:31,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:31,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:31,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:31,145 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:31,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:31,172 INFO L93 Difference]: Finished difference Result 87 states and 106 transitions. [2025-02-08 06:13:31,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:13:31,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-08 06:13:31,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:31,173 INFO L225 Difference]: With dead ends: 87 [2025-02-08 06:13:31,174 INFO L226 Difference]: Without dead ends: 71 [2025-02-08 06:13:31,174 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:31,175 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:31,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 45 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:31,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-08 06:13:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-02-08 06:13:31,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 70 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2025-02-08 06:13:31,179 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 19 [2025-02-08 06:13:31,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:31,179 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2025-02-08 06:13:31,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:31,179 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2025-02-08 06:13:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 06:13:31,179 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:31,179 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:31,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-02-08 06:13:31,180 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:31,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1690881342, now seen corresponding path program 1 times [2025-02-08 06:13:31,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:31,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473693553] [2025-02-08 06:13:31,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:31,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:31,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 06:13:31,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 06:13:31,198 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:31,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:31,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:31,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473693553] [2025-02-08 06:13:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473693553] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:31,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:31,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-08 06:13:31,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519157971] [2025-02-08 06:13:31,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:31,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 06:13:31,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:31,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 06:13:31,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2025-02-08 06:13:31,412 INFO L87 Difference]: Start difference. First operand 71 states and 84 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:31,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:31,492 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2025-02-08 06:13:31,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:13:31,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-08 06:13:31,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:31,492 INFO L225 Difference]: With dead ends: 82 [2025-02-08 06:13:31,492 INFO L226 Difference]: Without dead ends: 68 [2025-02-08 06:13:31,492 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-08 06:13:31,493 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:31,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 139 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:31,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-08 06:13:31,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-02-08 06:13:31,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 67 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 06:13:31,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2025-02-08 06:13:31,500 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 19 [2025-02-08 06:13:31,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:31,500 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2025-02-08 06:13:31,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:31,500 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2025-02-08 06:13:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 06:13:31,500 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:31,500 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:31,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-02-08 06:13:31,500 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:31,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1250776257, now seen corresponding path program 1 times [2025-02-08 06:13:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:31,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575048196] [2025-02-08 06:13:31,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:31,509 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 06:13:31,516 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 06:13:31,516 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:31,516 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:31,687 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:31,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:31,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575048196] [2025-02-08 06:13:31,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575048196] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:31,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:31,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 06:13:31,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690021363] [2025-02-08 06:13:31,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:31,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 06:13:31,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:31,688 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 06:13:31,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:13:31,688 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:31,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:31,727 INFO L93 Difference]: Finished difference Result 105 states and 121 transitions. [2025-02-08 06:13:31,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:13:31,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2025-02-08 06:13:31,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:31,728 INFO L225 Difference]: With dead ends: 105 [2025-02-08 06:13:31,728 INFO L226 Difference]: Without dead ends: 94 [2025-02-08 06:13:31,728 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:13:31,728 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 23 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:31,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 114 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-02-08 06:13:31,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 70. [2025-02-08 06:13:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 67 states have (on average 1.2238805970149254) internal successors, (82), 69 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 06:13:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2025-02-08 06:13:31,730 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 19 [2025-02-08 06:13:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:31,730 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2025-02-08 06:13:31,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:31,730 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2025-02-08 06:13:31,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-08 06:13:31,730 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:31,730 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:31,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-02-08 06:13:31,730 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:31,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:31,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1037970165, now seen corresponding path program 2 times [2025-02-08 06:13:31,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:31,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640422113] [2025-02-08 06:13:31,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:31,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:31,741 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-08 06:13:31,746 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 06:13:31,746 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:13:31,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:32,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:32,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:32,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640422113] [2025-02-08 06:13:32,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640422113] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:32,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551297172] [2025-02-08 06:13:32,040 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:32,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:32,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:32,042 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 06:13:32,048 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 06:13:32,090 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-08 06:13:32,103 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 06:13:32,104 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:13:32,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:32,105 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-08 06:13:32,106 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:32,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:13:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:32,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:32,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:13:32,231 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 16 treesize of output 12 [2025-02-08 06:13:32,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:32,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551297172] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:32,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:32,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 23 [2025-02-08 06:13:32,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686723922] [2025-02-08 06:13:32,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:32,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 06:13:32,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:32,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 06:13:32,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2025-02-08 06:13:32,278 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:32,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:32,610 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2025-02-08 06:13:32,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 06:13:32,610 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-08 06:13:32,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:32,611 INFO L225 Difference]: With dead ends: 129 [2025-02-08 06:13:32,611 INFO L226 Difference]: Without dead ends: 129 [2025-02-08 06:13:32,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2025-02-08 06:13:32,612 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 53 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:32,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 261 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:13:32,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2025-02-08 06:13:32,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 100. [2025-02-08 06:13:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 97 states have (on average 1.2061855670103092) internal successors, (117), 99 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 06:13:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2025-02-08 06:13:32,614 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 21 [2025-02-08 06:13:32,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:32,614 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2025-02-08 06:13:32,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:32,614 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2025-02-08 06:13:32,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-08 06:13:32,614 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:32,614 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:32,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:32,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:32,820 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:32,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:32,821 INFO L85 PathProgramCache]: Analyzing trace with hash -2112342815, now seen corresponding path program 1 times [2025-02-08 06:13:32,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:32,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865281067] [2025-02-08 06:13:32,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:32,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:32,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 06:13:32,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 06:13:32,829 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:32,829 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:32,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:32,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865281067] [2025-02-08 06:13:32,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865281067] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:32,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573731769] [2025-02-08 06:13:32,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:32,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:32,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:32,965 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 06:13:32,969 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 06:13:33,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 06:13:33,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 06:13:33,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:33,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:33,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-08 06:13:33,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:33,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:33,089 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:33,166 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 5 treesize of output 3 [2025-02-08 06:13:33,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:33,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573731769] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:33,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:33,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2025-02-08 06:13:33,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884017932] [2025-02-08 06:13:33,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:33,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 06:13:33,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:33,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 06:13:33,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2025-02-08 06:13:33,184 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 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 06:13:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:33,321 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2025-02-08 06:13:33,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 06:13:33,322 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 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 22 [2025-02-08 06:13:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:33,322 INFO L225 Difference]: With dead ends: 114 [2025-02-08 06:13:33,322 INFO L226 Difference]: Without dead ends: 99 [2025-02-08 06:13:33,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2025-02-08 06:13:33,323 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:33,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 191 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-02-08 06:13:33,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 89. [2025-02-08 06:13:33,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 88 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 06:13:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2025-02-08 06:13:33,324 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 22 [2025-02-08 06:13:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:33,324 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2025-02-08 06:13:33,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 20 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 06:13:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2025-02-08 06:13:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-08 06:13:33,328 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:33,328 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:33,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:33,532 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:33,532 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:33,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:33,533 INFO L85 PathProgramCache]: Analyzing trace with hash -555325980, now seen corresponding path program 1 times [2025-02-08 06:13:33,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:33,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979593600] [2025-02-08 06:13:33,533 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:33,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:33,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 06:13:33,541 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 06:13:33,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:33,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:33,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:33,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979593600] [2025-02-08 06:13:33,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979593600] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:33,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219804518] [2025-02-08 06:13:33,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:33,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:33,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:33,672 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 06:13:33,680 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 06:13:33,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-08 06:13:33,759 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-08 06:13:33,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:33,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:33,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:13:33,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:33,833 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:33,932 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 5 treesize of output 3 [2025-02-08 06:13:33,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:33,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219804518] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:33,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:33,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2025-02-08 06:13:33,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733617944] [2025-02-08 06:13:33,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:33,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-08 06:13:33,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:33,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-08 06:13:33,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2025-02-08 06:13:33,952 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:34,059 INFO L93 Difference]: Finished difference Result 98 states and 111 transitions. [2025-02-08 06:13:34,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:13:34,060 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-08 06:13:34,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:34,060 INFO L225 Difference]: With dead ends: 98 [2025-02-08 06:13:34,060 INFO L226 Difference]: Without dead ends: 98 [2025-02-08 06:13:34,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2025-02-08 06:13:34,061 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 16 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:34,061 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 170 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:34,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-02-08 06:13:34,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 93. [2025-02-08 06:13:34,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 92 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:34,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 107 transitions. [2025-02-08 06:13:34,063 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 107 transitions. Word has length 22 [2025-02-08 06:13:34,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:34,063 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 107 transitions. [2025-02-08 06:13:34,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.526315789473684) internal successors, (48), 20 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:34,063 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 107 transitions. [2025-02-08 06:13:34,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-08 06:13:34,063 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:34,063 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:34,069 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 06:13:34,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:34,272 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:34,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:34,272 INFO L85 PathProgramCache]: Analyzing trace with hash -35236249, now seen corresponding path program 1 times [2025-02-08 06:13:34,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:34,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604275074] [2025-02-08 06:13:34,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:34,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:34,280 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 06:13:34,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 06:13:34,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:34,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:34,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:34,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604275074] [2025-02-08 06:13:34,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604275074] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:34,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341099674] [2025-02-08 06:13:34,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:34,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:34,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:34,480 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 06:13:34,484 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 06:13:34,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 06:13:34,552 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 06:13:34,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:34,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:34,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-02-08 06:13:34,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:34,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-08 06:13:34,624 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 06:13:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:34,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:35,187 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:35,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341099674] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:35,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:35,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2025-02-08 06:13:35,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10455226] [2025-02-08 06:13:35,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:35,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-08 06:13:35,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:35,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-08 06:13:35,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=860, Unknown=0, NotChecked=0, Total=992 [2025-02-08 06:13:35,188 INFO L87 Difference]: Start difference. First operand 93 states and 107 transitions. Second operand has 32 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 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 06:13:35,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:35,476 INFO L93 Difference]: Finished difference Result 124 states and 140 transitions. [2025-02-08 06:13:35,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 06:13:35,476 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 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 23 [2025-02-08 06:13:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:35,477 INFO L225 Difference]: With dead ends: 124 [2025-02-08 06:13:35,477 INFO L226 Difference]: Without dead ends: 124 [2025-02-08 06:13:35,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2025-02-08 06:13:35,478 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:35,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 184 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:13:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-02-08 06:13:35,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 106. [2025-02-08 06:13:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 103 states have (on average 1.174757281553398) internal successors, (121), 105 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:35,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2025-02-08 06:13:35,480 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 23 [2025-02-08 06:13:35,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:35,480 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2025-02-08 06:13:35,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.225806451612903) internal successors, (69), 31 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 06:13:35,481 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2025-02-08 06:13:35,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-08 06:13:35,481 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:35,481 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:35,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:35,684 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,SelfDestructingSolverStorable36 [2025-02-08 06:13:35,685 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:35,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:35,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1751128097, now seen corresponding path program 2 times [2025-02-08 06:13:35,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:35,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049838518] [2025-02-08 06:13:35,685 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:35,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:35,695 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-08 06:13:35,709 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 06:13:35,709 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:13:35,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:36,015 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:36,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:36,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049838518] [2025-02-08 06:13:36,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049838518] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:36,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354935858] [2025-02-08 06:13:36,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:36,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:36,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:36,018 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 06:13:36,021 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 06:13:36,070 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 26 statements into 2 equivalence classes. [2025-02-08 06:13:36,087 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 26 of 26 statements. [2025-02-08 06:13:36,088 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:13:36,088 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:36,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-08 06:13:36,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:36,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:13:36,272 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:36,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:36,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:13:36,304 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 16 treesize of output 12 [2025-02-08 06:13:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:36,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354935858] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:36,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:36,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2025-02-08 06:13:36,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603741164] [2025-02-08 06:13:36,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:36,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-08 06:13:36,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:36,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-08 06:13:36,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2025-02-08 06:13:36,375 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:36,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:36,566 INFO L93 Difference]: Finished difference Result 178 states and 200 transitions. [2025-02-08 06:13:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 06:13:36,566 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-02-08 06:13:36,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:36,567 INFO L225 Difference]: With dead ends: 178 [2025-02-08 06:13:36,567 INFO L226 Difference]: Without dead ends: 146 [2025-02-08 06:13:36,567 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2025-02-08 06:13:36,567 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 14 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:36,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 417 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:13:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2025-02-08 06:13:36,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 140. [2025-02-08 06:13:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 137 states have (on average 1.1605839416058394) internal successors, (159), 139 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 06:13:36,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 159 transitions. [2025-02-08 06:13:36,569 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 159 transitions. Word has length 26 [2025-02-08 06:13:36,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:36,569 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 159 transitions. [2025-02-08 06:13:36,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 22 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:36,569 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 159 transitions. [2025-02-08 06:13:36,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-08 06:13:36,573 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:36,573 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:36,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:36,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-02-08 06:13:36,774 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:36,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:36,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1957507483, now seen corresponding path program 3 times [2025-02-08 06:13:36,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:36,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11654213] [2025-02-08 06:13:36,775 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:13:36,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:36,781 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-02-08 06:13:36,789 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 06:13:36,791 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 06:13:36,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:37,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:37,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11654213] [2025-02-08 06:13:37,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11654213] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:37,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101884835] [2025-02-08 06:13:37,058 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:13:37,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:37,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:37,066 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:37,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-08 06:13:37,142 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 27 statements into 4 equivalence classes. [2025-02-08 06:13:37,160 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 27 of 27 statements. [2025-02-08 06:13:37,160 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 06:13:37,160 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:37,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-08 06:13:37,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:37,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:13:37,330 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:37,333 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:37,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:13:37,354 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 16 treesize of output 12 [2025-02-08 06:13:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:37,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101884835] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:37,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:37,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2025-02-08 06:13:37,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47374548] [2025-02-08 06:13:37,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:37,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-08 06:13:37,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:37,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-08 06:13:37,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2025-02-08 06:13:37,409 INFO L87 Difference]: Start difference. First operand 140 states and 159 transitions. Second operand has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:38,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:38,025 INFO L93 Difference]: Finished difference Result 243 states and 270 transitions. [2025-02-08 06:13:38,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 06:13:38,025 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-02-08 06:13:38,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:38,026 INFO L225 Difference]: With dead ends: 243 [2025-02-08 06:13:38,026 INFO L226 Difference]: Without dead ends: 231 [2025-02-08 06:13:38,027 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2025-02-08 06:13:38,027 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 85 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:38,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 353 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:13:38,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2025-02-08 06:13:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 182. [2025-02-08 06:13:38,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 179 states have (on average 1.1564245810055866) internal successors, (207), 181 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 06:13:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 207 transitions. [2025-02-08 06:13:38,030 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 207 transitions. Word has length 27 [2025-02-08 06:13:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:38,030 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 207 transitions. [2025-02-08 06:13:38,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 27 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 207 transitions. [2025-02-08 06:13:38,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 06:13:38,031 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:38,031 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:38,044 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:38,231 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-08 06:13:38,232 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:38,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:38,233 INFO L85 PathProgramCache]: Analyzing trace with hash 92854682, now seen corresponding path program 3 times [2025-02-08 06:13:38,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:38,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068020985] [2025-02-08 06:13:38,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:13:38,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:38,241 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-02-08 06:13:38,249 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 06:13:38,249 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 06:13:38,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:38,531 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:38,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:38,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068020985] [2025-02-08 06:13:38,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068020985] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:38,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055330623] [2025-02-08 06:13:38,531 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:13:38,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:38,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:38,535 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:38,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-08 06:13:38,589 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 29 statements into 3 equivalence classes. [2025-02-08 06:13:38,611 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 06:13:38,611 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 06:13:38,611 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:38,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-02-08 06:13:38,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:38,799 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:38,799 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:38,916 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 21 treesize of output 17 [2025-02-08 06:13:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:38,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055330623] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:38,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:38,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 27 [2025-02-08 06:13:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812372142] [2025-02-08 06:13:38,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:38,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-08 06:13:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:38,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-08 06:13:38,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2025-02-08 06:13:38,993 INFO L87 Difference]: Start difference. First operand 182 states and 207 transitions. Second operand has 28 states, 27 states have (on average 2.925925925925926) internal successors, (79), 28 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 06:13:39,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:39,264 INFO L93 Difference]: Finished difference Result 189 states and 212 transitions. [2025-02-08 06:13:39,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-08 06:13:39,269 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.925925925925926) internal successors, (79), 28 states have internal predecessors, (79), 0 states have call successors, (0), 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 29 [2025-02-08 06:13:39,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:39,269 INFO L225 Difference]: With dead ends: 189 [2025-02-08 06:13:39,269 INFO L226 Difference]: Without dead ends: 189 [2025-02-08 06:13:39,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2025-02-08 06:13:39,270 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 15 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:39,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 250 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:13:39,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2025-02-08 06:13:39,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2025-02-08 06:13:39,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 184 states have (on average 1.1521739130434783) internal successors, (212), 186 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 06:13:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 212 transitions. [2025-02-08 06:13:39,278 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 212 transitions. Word has length 29 [2025-02-08 06:13:39,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:39,278 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 212 transitions. [2025-02-08 06:13:39,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.925925925925926) internal successors, (79), 28 states have internal predecessors, (79), 0 states have call successors, (0), 0 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 06:13:39,278 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 212 transitions. [2025-02-08 06:13:39,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-08 06:13:39,279 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:39,279 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:39,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:39,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-02-08 06:13:39,480 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:39,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:39,480 INFO L85 PathProgramCache]: Analyzing trace with hash 735452427, now seen corresponding path program 4 times [2025-02-08 06:13:39,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:39,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595054044] [2025-02-08 06:13:39,484 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:13:39,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:39,490 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-08 06:13:39,506 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 28 of 33 statements. [2025-02-08 06:13:39,506 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:13:39,506 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 26 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:39,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:39,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595054044] [2025-02-08 06:13:39,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595054044] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:39,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828858267] [2025-02-08 06:13:39,878 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:13:39,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:39,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:39,882 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:39,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-08 06:13:39,934 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-08 06:13:39,946 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 28 of 33 statements. [2025-02-08 06:13:39,947 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:13:39,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:39,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-08 06:13:39,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:40,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2025-02-08 06:13:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:40,202 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:40,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2025-02-08 06:13:40,276 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:13:40,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 45 [2025-02-08 06:13:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 26 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:40,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828858267] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:40,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:40,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 31 [2025-02-08 06:13:40,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579908493] [2025-02-08 06:13:40,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:40,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-08 06:13:40,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:40,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-08 06:13:40,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2025-02-08 06:13:40,414 INFO L87 Difference]: Start difference. First operand 187 states and 212 transitions. Second operand has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 06:13:40,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:40,690 INFO L93 Difference]: Finished difference Result 253 states and 284 transitions. [2025-02-08 06:13:40,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 06:13:40,690 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 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 06:13:40,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:40,691 INFO L225 Difference]: With dead ends: 253 [2025-02-08 06:13:40,692 INFO L226 Difference]: Without dead ends: 238 [2025-02-08 06:13:40,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=237, Invalid=1095, Unknown=0, NotChecked=0, Total=1332 [2025-02-08 06:13:40,692 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 33 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:40,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 232 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:13:40,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2025-02-08 06:13:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 220. [2025-02-08 06:13:40,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 217 states have (on average 1.1566820276497696) internal successors, (251), 219 states have internal predecessors, (251), 0 states have call successors, (0), 0 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 06:13:40,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 251 transitions. [2025-02-08 06:13:40,696 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 251 transitions. Word has length 33 [2025-02-08 06:13:40,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:40,696 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 251 transitions. [2025-02-08 06:13:40,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 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 06:13:40,696 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 251 transitions. [2025-02-08 06:13:40,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-08 06:13:40,698 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:40,698 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:40,708 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-08 06:13:40,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2025-02-08 06:13:40,899 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:40,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:40,899 INFO L85 PathProgramCache]: Analyzing trace with hash -69889899, now seen corresponding path program 4 times [2025-02-08 06:13:40,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:40,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814534632] [2025-02-08 06:13:40,900 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:13:40,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:40,905 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-08 06:13:40,910 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 29 of 33 statements. [2025-02-08 06:13:40,911 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:13:40,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:41,488 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:13:41,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:41,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814534632] [2025-02-08 06:13:41,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814534632] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:41,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965510032] [2025-02-08 06:13:41,489 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:13:41,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:41,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:41,491 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:41,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-08 06:13:41,550 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 33 statements into 2 equivalence classes. [2025-02-08 06:13:41,572 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 29 of 33 statements. [2025-02-08 06:13:41,572 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:13:41,572 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:41,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-02-08 06:13:41,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:41,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2025-02-08 06:13:42,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:13:42,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 77 treesize of output 122 [2025-02-08 06:13:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:13:42,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:43,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 38 [2025-02-08 06:13:43,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 58 [2025-02-08 06:13:43,221 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 5 treesize of output 3 [2025-02-08 06:13:43,246 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:13:43,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965510032] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:43,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:43,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 36 [2025-02-08 06:13:43,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581761034] [2025-02-08 06:13:43,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:43,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-08 06:13:43,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:43,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-08 06:13:43,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1154, Unknown=0, NotChecked=0, Total=1332 [2025-02-08 06:13:43,247 INFO L87 Difference]: Start difference. First operand 220 states and 251 transitions. Second operand has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 37 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:43,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:43,584 INFO L93 Difference]: Finished difference Result 220 states and 250 transitions. [2025-02-08 06:13:43,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 06:13:43,585 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 37 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-02-08 06:13:43,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:43,585 INFO L225 Difference]: With dead ends: 220 [2025-02-08 06:13:43,585 INFO L226 Difference]: Without dead ends: 220 [2025-02-08 06:13:43,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=227, Invalid=1333, Unknown=0, NotChecked=0, Total=1560 [2025-02-08 06:13:43,586 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 423 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:43,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 244 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:13:43,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2025-02-08 06:13:43,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 202. [2025-02-08 06:13:43,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 200 states have (on average 1.16) internal successors, (232), 201 states have internal predecessors, (232), 0 states have call successors, (0), 0 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 06:13:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2025-02-08 06:13:43,596 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 33 [2025-02-08 06:13:43,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:43,596 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2025-02-08 06:13:43,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 1.8888888888888888) internal successors, (68), 37 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2025-02-08 06:13:43,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-08 06:13:43,597 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:43,597 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:43,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:43,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:43,798 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:43,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:43,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2128380374, now seen corresponding path program 2 times [2025-02-08 06:13:43,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:43,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988652248] [2025-02-08 06:13:43,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:43,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:43,810 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-08 06:13:43,819 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 06:13:43,822 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:13:43,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:44,257 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 06:13:44,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:44,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988652248] [2025-02-08 06:13:44,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988652248] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:44,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672175060] [2025-02-08 06:13:44,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:44,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:44,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:44,263 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:44,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-08 06:13:44,317 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 34 statements into 2 equivalence classes. [2025-02-08 06:13:44,340 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 06:13:44,341 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:13:44,341 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:44,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-08 06:13:44,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:44,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:13:44,665 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:13:44,666 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:13:44,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2025-02-08 06:13:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:44,689 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:44,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:13:44,896 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 06:13:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:45,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672175060] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:45,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:45,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 38 [2025-02-08 06:13:45,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99452944] [2025-02-08 06:13:45,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:45,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-08 06:13:45,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:45,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-08 06:13:45,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1309, Unknown=0, NotChecked=0, Total=1406 [2025-02-08 06:13:45,117 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand has 38 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 38 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 06:13:46,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:46,095 INFO L93 Difference]: Finished difference Result 354 states and 399 transitions. [2025-02-08 06:13:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-02-08 06:13:46,095 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 38 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 34 [2025-02-08 06:13:46,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:46,096 INFO L225 Difference]: With dead ends: 354 [2025-02-08 06:13:46,096 INFO L226 Difference]: Without dead ends: 317 [2025-02-08 06:13:46,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=221, Invalid=3085, Unknown=0, NotChecked=0, Total=3306 [2025-02-08 06:13:46,099 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:46,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 522 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 06:13:46,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2025-02-08 06:13:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 292. [2025-02-08 06:13:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 290 states have (on average 1.1551724137931034) internal successors, (335), 291 states have internal predecessors, (335), 0 states have call successors, (0), 0 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 06:13:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 335 transitions. [2025-02-08 06:13:46,105 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 335 transitions. Word has length 34 [2025-02-08 06:13:46,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:46,106 INFO L471 AbstractCegarLoop]: Abstraction has 292 states and 335 transitions. [2025-02-08 06:13:46,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.4473684210526314) internal successors, (93), 38 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 06:13:46,106 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 335 transitions. [2025-02-08 06:13:46,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-08 06:13:46,107 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:46,107 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:46,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:46,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:46,308 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:46,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:46,308 INFO L85 PathProgramCache]: Analyzing trace with hash -907767482, now seen corresponding path program 1 times [2025-02-08 06:13:46,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:46,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049719378] [2025-02-08 06:13:46,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:46,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:46,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 06:13:46,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 06:13:46,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:46,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:46,577 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:46,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:46,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049719378] [2025-02-08 06:13:46,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049719378] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:46,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324996179] [2025-02-08 06:13:46,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:46,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:46,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:46,580 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:46,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-08 06:13:46,639 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-08 06:13:46,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-08 06:13:46,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:46,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:46,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 63 conjuncts are in the unsatisfiable core [2025-02-08 06:13:46,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:46,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-08 06:13:46,699 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 06:13:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:47,241 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:47,713 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:47,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324996179] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:47,714 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:47,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 15] total 42 [2025-02-08 06:13:47,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974433417] [2025-02-08 06:13:47,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:47,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-02-08 06:13:47,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:47,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-02-08 06:13:47,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=1679, Unknown=0, NotChecked=0, Total=1892 [2025-02-08 06:13:47,715 INFO L87 Difference]: Start difference. First operand 292 states and 335 transitions. Second operand has 44 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:48,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:48,902 INFO L93 Difference]: Finished difference Result 400 states and 446 transitions. [2025-02-08 06:13:48,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-02-08 06:13:48,902 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2025-02-08 06:13:48,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:48,903 INFO L225 Difference]: With dead ends: 400 [2025-02-08 06:13:48,903 INFO L226 Difference]: Without dead ends: 313 [2025-02-08 06:13:48,904 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1355 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=585, Invalid=4527, Unknown=0, NotChecked=0, Total=5112 [2025-02-08 06:13:48,905 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 93 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:48,905 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 427 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 06:13:48,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2025-02-08 06:13:48,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 257. [2025-02-08 06:13:48,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 255 states have (on average 1.1372549019607843) internal successors, (290), 256 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 06:13:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 290 transitions. [2025-02-08 06:13:48,908 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 290 transitions. Word has length 35 [2025-02-08 06:13:48,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:48,908 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 290 transitions. [2025-02-08 06:13:48,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.441860465116279) internal successors, (105), 43 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:48,908 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 290 transitions. [2025-02-08 06:13:48,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-08 06:13:48,909 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:48,909 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:48,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:49,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:49,109 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:49,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:49,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1458822126, now seen corresponding path program 5 times [2025-02-08 06:13:49,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:49,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283736069] [2025-02-08 06:13:49,110 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:13:49,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:49,117 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 5 equivalence classes. [2025-02-08 06:13:49,122 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 06:13:49,122 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:13:49,122 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:49,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:49,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283736069] [2025-02-08 06:13:49,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283736069] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:49,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443423866] [2025-02-08 06:13:49,273 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:13:49,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:49,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:49,274 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:49,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-08 06:13:49,336 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 36 statements into 5 equivalence classes. [2025-02-08 06:13:49,357 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 36 of 36 statements. [2025-02-08 06:13:49,357 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:13:49,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:49,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-08 06:13:49,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:49,363 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 06:13:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:49,506 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:49,805 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:49,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443423866] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:49,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:49,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2025-02-08 06:13:49,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825266202] [2025-02-08 06:13:49,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:49,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-08 06:13:49,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:49,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-08 06:13:49,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=909, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 06:13:49,807 INFO L87 Difference]: Start difference. First operand 257 states and 290 transitions. Second operand has 33 states, 32 states have (on average 2.75) internal successors, (88), 33 states have internal predecessors, (88), 0 states have call successors, (0), 0 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 06:13:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:50,138 INFO L93 Difference]: Finished difference Result 292 states and 328 transitions. [2025-02-08 06:13:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 06:13:50,139 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.75) internal successors, (88), 33 states have internal predecessors, (88), 0 states have call successors, (0), 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 36 [2025-02-08 06:13:50,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:50,139 INFO L225 Difference]: With dead ends: 292 [2025-02-08 06:13:50,140 INFO L226 Difference]: Without dead ends: 292 [2025-02-08 06:13:50,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122 [2025-02-08 06:13:50,140 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 60 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:50,140 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 517 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:13:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2025-02-08 06:13:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 260. [2025-02-08 06:13:50,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 258 states have (on average 1.1356589147286822) internal successors, (293), 259 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 06:13:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 293 transitions. [2025-02-08 06:13:50,143 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 293 transitions. Word has length 36 [2025-02-08 06:13:50,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:50,143 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 293 transitions. [2025-02-08 06:13:50,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.75) internal successors, (88), 33 states have internal predecessors, (88), 0 states have call successors, (0), 0 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 06:13:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 293 transitions. [2025-02-08 06:13:50,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-08 06:13:50,144 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:50,144 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:50,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:50,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:50,345 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:50,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:50,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2086751408, now seen corresponding path program 1 times [2025-02-08 06:13:50,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:50,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322316544] [2025-02-08 06:13:50,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:50,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:50,351 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-08 06:13:50,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 06:13:50,356 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:50,356 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:50,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:50,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322316544] [2025-02-08 06:13:50,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322316544] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:50,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126950017] [2025-02-08 06:13:50,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:50,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:50,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:50,653 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:50,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-08 06:13:50,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-08 06:13:50,741 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 06:13:50,741 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:50,741 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:50,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 73 conjuncts are in the unsatisfiable core [2025-02-08 06:13:50,744 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:50,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-08 06:13:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:51,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:51,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126950017] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:51,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:51,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2025-02-08 06:13:51,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885640841] [2025-02-08 06:13:51,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:51,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-08 06:13:51,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:51,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-08 06:13:51,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1448, Unknown=0, NotChecked=0, Total=1640 [2025-02-08 06:13:51,738 INFO L87 Difference]: Start difference. First operand 260 states and 293 transitions. Second operand has 41 states, 40 states have (on average 2.775) internal successors, (111), 40 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:52,370 INFO L93 Difference]: Finished difference Result 306 states and 340 transitions. [2025-02-08 06:13:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-08 06:13:52,371 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.775) internal successors, (111), 40 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-02-08 06:13:52,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:52,372 INFO L225 Difference]: With dead ends: 306 [2025-02-08 06:13:52,372 INFO L226 Difference]: Without dead ends: 306 [2025-02-08 06:13:52,372 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=299, Invalid=2251, Unknown=0, NotChecked=0, Total=2550 [2025-02-08 06:13:52,372 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 41 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:52,373 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 456 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 06:13:52,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2025-02-08 06:13:52,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 263. [2025-02-08 06:13:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 261 states have (on average 1.1379310344827587) internal successors, (297), 262 states have internal predecessors, (297), 0 states have call successors, (0), 0 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 06:13:52,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 297 transitions. [2025-02-08 06:13:52,383 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 297 transitions. Word has length 37 [2025-02-08 06:13:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:52,384 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 297 transitions. [2025-02-08 06:13:52,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.775) internal successors, (111), 40 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:52,384 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 297 transitions. [2025-02-08 06:13:52,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-08 06:13:52,384 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:52,384 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:52,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:52,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:52,586 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:52,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:52,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1004154139, now seen corresponding path program 6 times [2025-02-08 06:13:52,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:52,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275420351] [2025-02-08 06:13:52,587 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:13:52,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:52,592 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 6 equivalence classes. [2025-02-08 06:13:52,606 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 06:13:52,606 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-08 06:13:52,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:52,940 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:52,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:52,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275420351] [2025-02-08 06:13:52,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275420351] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:52,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292371482] [2025-02-08 06:13:52,941 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:13:52,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:52,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:52,943 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:52,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-08 06:13:53,005 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 39 statements into 6 equivalence classes. [2025-02-08 06:13:53,030 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 06:13:53,030 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-08 06:13:53,030 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:53,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-08 06:13:53,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:53,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:13:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:53,233 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:53,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:13:53,252 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 16 treesize of output 12 [2025-02-08 06:13:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:53,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292371482] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:53,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:53,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 35 [2025-02-08 06:13:53,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492521585] [2025-02-08 06:13:53,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:53,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-08 06:13:53,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:53,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-08 06:13:53,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1095, Unknown=0, NotChecked=0, Total=1190 [2025-02-08 06:13:53,313 INFO L87 Difference]: Start difference. First operand 263 states and 297 transitions. Second operand has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 35 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 06:13:54,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:54,154 INFO L93 Difference]: Finished difference Result 427 states and 475 transitions. [2025-02-08 06:13:54,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-08 06:13:54,155 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 35 states have internal predecessors, (82), 0 states have call successors, (0), 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 39 [2025-02-08 06:13:54,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:54,155 INFO L225 Difference]: With dead ends: 427 [2025-02-08 06:13:54,155 INFO L226 Difference]: Without dead ends: 409 [2025-02-08 06:13:54,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=288, Invalid=3018, Unknown=0, NotChecked=0, Total=3306 [2025-02-08 06:13:54,156 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 158 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 1292 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 1336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:54,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 557 Invalid, 1336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1292 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 06:13:54,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2025-02-08 06:13:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 341. [2025-02-08 06:13:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 339 states have (on average 1.1386430678466077) internal successors, (386), 340 states have internal predecessors, (386), 0 states have call successors, (0), 0 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 06:13:54,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 386 transitions. [2025-02-08 06:13:54,160 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 386 transitions. Word has length 39 [2025-02-08 06:13:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:54,160 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 386 transitions. [2025-02-08 06:13:54,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.342857142857143) internal successors, (82), 35 states have internal predecessors, (82), 0 states have call successors, (0), 0 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 06:13:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 386 transitions. [2025-02-08 06:13:54,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-08 06:13:54,161 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:54,161 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:54,169 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:54,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:54,362 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:54,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash 305116427, now seen corresponding path program 7 times [2025-02-08 06:13:54,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:54,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534294202] [2025-02-08 06:13:54,363 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:13:54,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:54,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 06:13:54,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 06:13:54,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:54,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:54,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:54,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534294202] [2025-02-08 06:13:54,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534294202] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:54,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005780237] [2025-02-08 06:13:54,670 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:13:54,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:54,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:54,672 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:54,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-08 06:13:54,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-08 06:13:54,755 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 06:13:54,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:54,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:54,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-02-08 06:13:54,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:54,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:13:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:55,069 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:55,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:13:55,091 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 16 treesize of output 12 [2025-02-08 06:13:55,160 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:55,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005780237] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:55,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:55,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 37 [2025-02-08 06:13:55,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714599434] [2025-02-08 06:13:55,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:55,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-08 06:13:55,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:55,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-08 06:13:55,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=1243, Unknown=0, NotChecked=0, Total=1332 [2025-02-08 06:13:55,161 INFO L87 Difference]: Start difference. First operand 341 states and 386 transitions. Second operand has 37 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 37 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:56,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:56,154 INFO L93 Difference]: Finished difference Result 548 states and 611 transitions. [2025-02-08 06:13:56,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 06:13:56,155 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 37 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2025-02-08 06:13:56,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:56,156 INFO L225 Difference]: With dead ends: 548 [2025-02-08 06:13:56,156 INFO L226 Difference]: Without dead ends: 527 [2025-02-08 06:13:56,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=3276, Unknown=0, NotChecked=0, Total=3540 [2025-02-08 06:13:56,157 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 114 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:56,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 904 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 06:13:56,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2025-02-08 06:13:56,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 419. [2025-02-08 06:13:56,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 417 states have (on average 1.146282973621103) internal successors, (478), 418 states have internal predecessors, (478), 0 states have call successors, (0), 0 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 06:13:56,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 478 transitions. [2025-02-08 06:13:56,168 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 478 transitions. Word has length 45 [2025-02-08 06:13:56,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:56,168 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 478 transitions. [2025-02-08 06:13:56,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.5405405405405403) internal successors, (94), 37 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:56,168 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 478 transitions. [2025-02-08 06:13:56,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-08 06:13:56,169 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:56,169 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:56,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-08 06:13:56,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2025-02-08 06:13:56,369 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:56,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:56,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1677721307, now seen corresponding path program 3 times [2025-02-08 06:13:56,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:56,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810548869] [2025-02-08 06:13:56,370 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:13:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:56,380 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 6 equivalence classes. [2025-02-08 06:13:56,397 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 06:13:56,400 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-08 06:13:56,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:56,922 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 13 proven. 29 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-08 06:13:56,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:56,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810548869] [2025-02-08 06:13:56,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810548869] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:56,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858542650] [2025-02-08 06:13:56,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:13:56,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:56,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:56,925 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:56,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-08 06:13:56,994 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 45 statements into 6 equivalence classes. [2025-02-08 06:13:57,070 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 45 of 45 statements. [2025-02-08 06:13:57,071 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-08 06:13:57,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:57,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-02-08 06:13:57,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:57,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:13:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 06:13:57,376 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:57,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:13:57,531 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 16 treesize of output 12 [2025-02-08 06:13:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 28 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-08 06:13:57,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858542650] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:57,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:57,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 44 [2025-02-08 06:13:57,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411009047] [2025-02-08 06:13:57,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:57,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-02-08 06:13:57,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:57,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-02-08 06:13:57,691 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1775, Unknown=0, NotChecked=0, Total=1892 [2025-02-08 06:13:57,691 INFO L87 Difference]: Start difference. First operand 419 states and 478 transitions. Second operand has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 44 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 06:13:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:59,291 INFO L93 Difference]: Finished difference Result 641 states and 729 transitions. [2025-02-08 06:13:59,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-02-08 06:13:59,291 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 44 states have internal predecessors, (108), 0 states have call successors, (0), 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 45 [2025-02-08 06:13:59,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:59,292 INFO L225 Difference]: With dead ends: 641 [2025-02-08 06:13:59,292 INFO L226 Difference]: Without dead ends: 547 [2025-02-08 06:13:59,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 983 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=368, Invalid=4888, Unknown=0, NotChecked=0, Total=5256 [2025-02-08 06:13:59,300 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 29 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:59,302 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 498 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 06:13:59,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2025-02-08 06:13:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 523. [2025-02-08 06:13:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 521 states have (on average 1.1362763915547025) internal successors, (592), 522 states have internal predecessors, (592), 0 states have call successors, (0), 0 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 06:13:59,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 592 transitions. [2025-02-08 06:13:59,309 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 592 transitions. Word has length 45 [2025-02-08 06:13:59,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:59,310 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 592 transitions. [2025-02-08 06:13:59,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.4545454545454546) internal successors, (108), 44 states have internal predecessors, (108), 0 states have call successors, (0), 0 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 06:13:59,310 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 592 transitions. [2025-02-08 06:13:59,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-08 06:13:59,311 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:59,311 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:59,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:59,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2025-02-08 06:13:59,515 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:13:59,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:59,515 INFO L85 PathProgramCache]: Analyzing trace with hash 369853894, now seen corresponding path program 2 times [2025-02-08 06:13:59,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:59,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356076569] [2025-02-08 06:13:59,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:59,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:59,522 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-02-08 06:13:59,535 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 06:13:59,536 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:13:59,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:59,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:59,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356076569] [2025-02-08 06:13:59,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356076569] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:59,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179996105] [2025-02-08 06:13:59,951 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:59,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:59,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:59,954 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:13:59,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-08 06:14:00,023 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 47 statements into 2 equivalence classes. [2025-02-08 06:14:00,058 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 06:14:00,058 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:14:00,058 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:00,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 74 conjuncts are in the unsatisfiable core [2025-02-08 06:14:00,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:00,086 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 06:14:00,902 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:00,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:01,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179996105] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:01,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:01,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 54 [2025-02-08 06:14:01,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803789984] [2025-02-08 06:14:01,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:01,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2025-02-08 06:14:01,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:01,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2025-02-08 06:14:01,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=2780, Unknown=0, NotChecked=0, Total=3080 [2025-02-08 06:14:01,559 INFO L87 Difference]: Start difference. First operand 523 states and 592 transitions. Second operand has 56 states, 55 states have (on average 2.5636363636363635) internal successors, (141), 55 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 06:14:03,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:03,194 INFO L93 Difference]: Finished difference Result 628 states and 696 transitions. [2025-02-08 06:14:03,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-02-08 06:14:03,195 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.5636363636363635) internal successors, (141), 55 states have internal predecessors, (141), 0 states have call successors, (0), 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 47 [2025-02-08 06:14:03,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:03,196 INFO L225 Difference]: With dead ends: 628 [2025-02-08 06:14:03,196 INFO L226 Difference]: Without dead ends: 564 [2025-02-08 06:14:03,198 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=798, Invalid=6512, Unknown=0, NotChecked=0, Total=7310 [2025-02-08 06:14:03,199 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 83 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:03,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 688 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 06:14:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2025-02-08 06:14:03,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 467. [2025-02-08 06:14:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 465 states have (on average 1.1225806451612903) internal successors, (522), 466 states have internal predecessors, (522), 0 states have call successors, (0), 0 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 06:14:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 522 transitions. [2025-02-08 06:14:03,204 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 522 transitions. Word has length 47 [2025-02-08 06:14:03,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:03,204 INFO L471 AbstractCegarLoop]: Abstraction has 467 states and 522 transitions. [2025-02-08 06:14:03,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.5636363636363635) internal successors, (141), 55 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 06:14:03,204 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 522 transitions. [2025-02-08 06:14:03,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-08 06:14:03,205 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:03,205 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:03,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-08 06:14:03,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2025-02-08 06:14:03,409 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:03,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:03,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1027265652, now seen corresponding path program 3 times [2025-02-08 06:14:03,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:03,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871535589] [2025-02-08 06:14:03,410 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:03,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:03,417 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 4 equivalence classes. [2025-02-08 06:14:03,424 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 48 of 48 statements. [2025-02-08 06:14:03,424 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 06:14:03,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 1 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:03,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:03,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871535589] [2025-02-08 06:14:03,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871535589] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:03,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873441687] [2025-02-08 06:14:03,795 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:03,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:03,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:03,798 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:14:03,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-08 06:14:03,879 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 4 equivalence classes. [2025-02-08 06:14:03,925 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 48 of 48 statements. [2025-02-08 06:14:03,925 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 06:14:03,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:03,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 83 conjuncts are in the unsatisfiable core [2025-02-08 06:14:03,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:03,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-08 06:14:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:04,771 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:05,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873441687] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:05,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:05,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 19] total 55 [2025-02-08 06:14:05,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939994456] [2025-02-08 06:14:05,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:05,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-02-08 06:14:05,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:05,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-02-08 06:14:05,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=2869, Unknown=0, NotChecked=0, Total=3192 [2025-02-08 06:14:05,519 INFO L87 Difference]: Start difference. First operand 467 states and 522 transitions. Second operand has 57 states, 56 states have (on average 2.5714285714285716) internal successors, (144), 56 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:07,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:07,968 INFO L93 Difference]: Finished difference Result 632 states and 687 transitions. [2025-02-08 06:14:07,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2025-02-08 06:14:07,968 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.5714285714285716) internal successors, (144), 56 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-02-08 06:14:07,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:07,969 INFO L225 Difference]: With dead ends: 632 [2025-02-08 06:14:07,969 INFO L226 Difference]: Without dead ends: 525 [2025-02-08 06:14:07,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2981 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1095, Invalid=9207, Unknown=0, NotChecked=0, Total=10302 [2025-02-08 06:14:07,970 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 167 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:07,970 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 622 Invalid, 2129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-02-08 06:14:07,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2025-02-08 06:14:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 438. [2025-02-08 06:14:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 436 states have (on average 1.114678899082569) internal successors, (486), 437 states have internal predecessors, (486), 0 states have call successors, (0), 0 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 06:14:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 486 transitions. [2025-02-08 06:14:07,976 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 486 transitions. Word has length 48 [2025-02-08 06:14:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:07,976 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 486 transitions. [2025-02-08 06:14:07,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.5714285714285716) internal successors, (144), 56 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 486 transitions. [2025-02-08 06:14:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-02-08 06:14:07,977 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:07,977 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:07,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2025-02-08 06:14:08,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2025-02-08 06:14:08,179 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:08,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1642053328, now seen corresponding path program 4 times [2025-02-08 06:14:08,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:08,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699505067] [2025-02-08 06:14:08,179 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:08,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:08,187 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-02-08 06:14:08,196 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-08 06:14:08,196 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:08,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:14:09,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699505067] [2025-02-08 06:14:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699505067] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716646462] [2025-02-08 06:14:09,184 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:09,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:09,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:09,186 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:14:09,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-08 06:14:09,259 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 49 statements into 2 equivalence classes. [2025-02-08 06:14:09,303 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 49 of 49 statements. [2025-02-08 06:14:09,303 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:09,303 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:09,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 91 conjuncts are in the unsatisfiable core [2025-02-08 06:14:09,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:09,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-08 06:14:10,405 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:10,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:11,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716646462] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:11,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:11,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 19] total 61 [2025-02-08 06:14:11,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471994100] [2025-02-08 06:14:11,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:11,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2025-02-08 06:14:11,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:11,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2025-02-08 06:14:11,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3609, Unknown=0, NotChecked=0, Total=3906 [2025-02-08 06:14:11,364 INFO L87 Difference]: Start difference. First operand 438 states and 486 transitions. Second operand has 63 states, 62 states have (on average 2.274193548387097) internal successors, (141), 62 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 06:14:15,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:15,759 INFO L93 Difference]: Finished difference Result 618 states and 684 transitions. [2025-02-08 06:14:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2025-02-08 06:14:15,759 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 2.274193548387097) internal successors, (141), 62 states have internal predecessors, (141), 0 states have call successors, (0), 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 49 [2025-02-08 06:14:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:15,760 INFO L225 Difference]: With dead ends: 618 [2025-02-08 06:14:15,761 INFO L226 Difference]: Without dead ends: 591 [2025-02-08 06:14:15,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4337 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1250, Invalid=15006, Unknown=0, NotChecked=0, Total=16256 [2025-02-08 06:14:15,762 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 235 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:15,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 504 Invalid, 2850 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2025-02-08 06:14:15,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2025-02-08 06:14:15,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 463. [2025-02-08 06:14:15,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.121475054229935) internal successors, (517), 462 states have internal predecessors, (517), 0 states have call successors, (0), 0 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 06:14:15,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 517 transitions. [2025-02-08 06:14:15,767 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 517 transitions. Word has length 49 [2025-02-08 06:14:15,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:15,768 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 517 transitions. [2025-02-08 06:14:15,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 2.274193548387097) internal successors, (141), 62 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 06:14:15,768 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 517 transitions. [2025-02-08 06:14:15,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-08 06:14:15,768 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:15,768 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:15,775 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-08 06:14:15,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2025-02-08 06:14:15,972 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:15,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2094391882, now seen corresponding path program 5 times [2025-02-08 06:14:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:15,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315175814] [2025-02-08 06:14:15,973 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:15,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:15,978 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 50 statements into 5 equivalence classes. [2025-02-08 06:14:15,987 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 50 of 50 statements. [2025-02-08 06:14:15,987 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:14:15,987 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:16,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:16,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315175814] [2025-02-08 06:14:16,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315175814] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:16,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060785174] [2025-02-08 06:14:16,581 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:16,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:16,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:16,583 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:14:16,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-08 06:14:16,662 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 50 statements into 5 equivalence classes. [2025-02-08 06:14:16,769 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 50 of 50 statements. [2025-02-08 06:14:16,769 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:14:16,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:16,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 90 conjuncts are in the unsatisfiable core [2025-02-08 06:14:16,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:16,802 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 06:14:17,610 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:17,611 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 23 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:18,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060785174] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:18,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:18,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 50 [2025-02-08 06:14:18,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072773000] [2025-02-08 06:14:18,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:18,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-08 06:14:18,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:18,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-08 06:14:18,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=2399, Unknown=0, NotChecked=0, Total=2652 [2025-02-08 06:14:18,410 INFO L87 Difference]: Start difference. First operand 463 states and 517 transitions. Second operand has 52 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:19,626 INFO L93 Difference]: Finished difference Result 520 states and 575 transitions. [2025-02-08 06:14:19,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-08 06:14:19,627 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-02-08 06:14:19,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:19,628 INFO L225 Difference]: With dead ends: 520 [2025-02-08 06:14:19,628 INFO L226 Difference]: Without dead ends: 520 [2025-02-08 06:14:19,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1228 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=548, Invalid=5002, Unknown=0, NotChecked=0, Total=5550 [2025-02-08 06:14:19,628 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 64 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:19,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 313 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 06:14:19,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2025-02-08 06:14:19,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 444. [2025-02-08 06:14:19,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 442 states have (on average 1.1131221719457014) internal successors, (492), 443 states have internal predecessors, (492), 0 states have call successors, (0), 0 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 06:14:19,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 492 transitions. [2025-02-08 06:14:19,632 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 492 transitions. Word has length 50 [2025-02-08 06:14:19,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:19,632 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 492 transitions. [2025-02-08 06:14:19,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:19,632 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 492 transitions. [2025-02-08 06:14:19,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-08 06:14:19,633 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:19,633 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:19,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-02-08 06:14:19,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:19,833 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:19,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:19,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1006815077, now seen corresponding path program 8 times [2025-02-08 06:14:19,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:19,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009145096] [2025-02-08 06:14:19,834 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:14:19,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:19,840 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-02-08 06:14:19,844 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 06:14:19,844 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:14:19,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 22 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:20,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009145096] [2025-02-08 06:14:20,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009145096] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716642821] [2025-02-08 06:14:20,260 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:14:20,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:20,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:20,262 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:14:20,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-08 06:14:20,358 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-02-08 06:14:20,380 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-08 06:14:20,381 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:14:20,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:20,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-08 06:14:20,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:20,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:14:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 14 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:20,745 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:20,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:14:20,771 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 16 treesize of output 12 [2025-02-08 06:14:20,847 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 14 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:20,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716642821] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:20,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:20,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 42 [2025-02-08 06:14:20,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930124441] [2025-02-08 06:14:20,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:20,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2025-02-08 06:14:20,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:20,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2025-02-08 06:14:20,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1618, Unknown=0, NotChecked=0, Total=1722 [2025-02-08 06:14:20,852 INFO L87 Difference]: Start difference. First operand 444 states and 492 transitions. Second operand has 42 states, 42 states have (on average 2.5238095238095237) internal successors, (106), 42 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:22,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:22,146 INFO L93 Difference]: Finished difference Result 693 states and 761 transitions. [2025-02-08 06:14:22,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2025-02-08 06:14:22,147 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.5238095238095237) internal successors, (106), 42 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-02-08 06:14:22,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:22,148 INFO L225 Difference]: With dead ends: 693 [2025-02-08 06:14:22,148 INFO L226 Difference]: Without dead ends: 669 [2025-02-08 06:14:22,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 746 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=285, Invalid=4137, Unknown=0, NotChecked=0, Total=4422 [2025-02-08 06:14:22,149 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 104 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:22,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1044 Invalid, 2397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 06:14:22,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2025-02-08 06:14:22,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 570. [2025-02-08 06:14:22,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 568 states have (on average 1.1161971830985915) internal successors, (634), 569 states have internal predecessors, (634), 0 states have call successors, (0), 0 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 06:14:22,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 634 transitions. [2025-02-08 06:14:22,154 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 634 transitions. Word has length 51 [2025-02-08 06:14:22,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:22,154 INFO L471 AbstractCegarLoop]: Abstraction has 570 states and 634 transitions. [2025-02-08 06:14:22,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 2.5238095238095237) internal successors, (106), 42 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 634 transitions. [2025-02-08 06:14:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2025-02-08 06:14:22,155 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:22,155 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:22,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2025-02-08 06:14:22,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2025-02-08 06:14:22,359 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:22,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:22,359 INFO L85 PathProgramCache]: Analyzing trace with hash -377840373, now seen corresponding path program 9 times [2025-02-08 06:14:22,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:22,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943597924] [2025-02-08 06:14:22,360 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:22,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:22,366 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 9 equivalence classes. [2025-02-08 06:14:22,377 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 06:14:22,377 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-08 06:14:22,377 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:23,023 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 35 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:23,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:23,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943597924] [2025-02-08 06:14:23,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943597924] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:23,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444301378] [2025-02-08 06:14:23,024 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:23,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:23,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:23,026 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:14:23,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-08 06:14:23,121 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 57 statements into 9 equivalence classes. [2025-02-08 06:14:23,179 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 57 of 57 statements. [2025-02-08 06:14:23,179 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-08 06:14:23,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:23,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 62 conjuncts are in the unsatisfiable core [2025-02-08 06:14:23,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:23,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:14:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 16 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:23,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:23,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:14:23,637 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 16 treesize of output 12 [2025-02-08 06:14:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 16 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:23,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444301378] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:23,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:23,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 47 [2025-02-08 06:14:23,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119575610] [2025-02-08 06:14:23,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:23,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2025-02-08 06:14:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:23,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2025-02-08 06:14:23,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2014, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 06:14:23,709 INFO L87 Difference]: Start difference. First operand 570 states and 634 transitions. Second operand has 47 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 0 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 06:14:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:25,105 INFO L93 Difference]: Finished difference Result 875 states and 965 transitions. [2025-02-08 06:14:25,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-02-08 06:14:25,105 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 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 57 [2025-02-08 06:14:25,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:25,106 INFO L225 Difference]: With dead ends: 875 [2025-02-08 06:14:25,107 INFO L226 Difference]: Without dead ends: 848 [2025-02-08 06:14:25,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1476 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=515, Invalid=6291, Unknown=0, NotChecked=0, Total=6806 [2025-02-08 06:14:25,107 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 236 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 2226 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 2294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 2226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:25,107 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 791 Invalid, 2294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 2226 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-08 06:14:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2025-02-08 06:14:25,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 696. [2025-02-08 06:14:25,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 694 states have (on average 1.1239193083573487) internal successors, (780), 695 states have internal predecessors, (780), 0 states have call successors, (0), 0 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 06:14:25,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 780 transitions. [2025-02-08 06:14:25,113 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 780 transitions. Word has length 57 [2025-02-08 06:14:25,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:25,113 INFO L471 AbstractCegarLoop]: Abstraction has 696 states and 780 transitions. [2025-02-08 06:14:25,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.5106382978723403) internal successors, (118), 47 states have internal predecessors, (118), 0 states have call successors, (0), 0 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 06:14:25,113 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 780 transitions. [2025-02-08 06:14:25,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-08 06:14:25,114 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:25,114 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:25,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-02-08 06:14:25,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:25,315 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:25,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:25,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2107138304, now seen corresponding path program 6 times [2025-02-08 06:14:25,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:25,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907629942] [2025-02-08 06:14:25,316 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:14:25,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:25,324 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 7 equivalence classes. [2025-02-08 06:14:25,341 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 06:14:25,342 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-08 06:14:25,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 60 proven. 40 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 06:14:25,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:25,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907629942] [2025-02-08 06:14:25,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907629942] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:25,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248795112] [2025-02-08 06:14:25,913 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:14:25,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:25,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:25,916 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:14:25,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-08 06:14:26,010 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 58 statements into 7 equivalence classes. [2025-02-08 06:14:26,154 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 58 of 58 statements. [2025-02-08 06:14:26,154 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-08 06:14:26,154 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:26,156 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 90 conjuncts are in the unsatisfiable core [2025-02-08 06:14:26,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:26,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-08 06:14:26,561 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 06:14:26,561 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:26,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:14:26,771 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 16 treesize of output 12 [2025-02-08 06:14:26,970 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 35 proven. 62 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-08 06:14:26,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248795112] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:26,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:26,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 17] total 51 [2025-02-08 06:14:26,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289722596] [2025-02-08 06:14:26,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:26,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-08 06:14:26,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:26,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-08 06:14:26,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2396, Unknown=0, NotChecked=0, Total=2550 [2025-02-08 06:14:26,972 INFO L87 Difference]: Start difference. First operand 696 states and 780 transitions. Second operand has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:28,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:28,157 INFO L93 Difference]: Finished difference Result 1007 states and 1124 transitions. [2025-02-08 06:14:28,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-08 06:14:28,157 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-02-08 06:14:28,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:28,159 INFO L225 Difference]: With dead ends: 1007 [2025-02-08 06:14:28,159 INFO L226 Difference]: Without dead ends: 946 [2025-02-08 06:14:28,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=358, Invalid=5648, Unknown=0, NotChecked=0, Total=6006 [2025-02-08 06:14:28,160 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 18 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 1925 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:28,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 705 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1925 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 06:14:28,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2025-02-08 06:14:28,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 877. [2025-02-08 06:14:28,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 875 states have (on average 1.1268571428571428) internal successors, (986), 876 states have internal predecessors, (986), 0 states have call successors, (0), 0 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 06:14:28,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 986 transitions. [2025-02-08 06:14:28,166 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 986 transitions. Word has length 58 [2025-02-08 06:14:28,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:28,166 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 986 transitions. [2025-02-08 06:14:28,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:28,166 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 986 transitions. [2025-02-08 06:14:28,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-08 06:14:28,167 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:28,167 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:28,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-02-08 06:14:28,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:28,368 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:28,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash 258542150, now seen corresponding path program 7 times [2025-02-08 06:14:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:28,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313523608] [2025-02-08 06:14:28,369 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:14:28,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:28,377 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 06:14:28,382 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 06:14:28,382 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:28,382 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 22 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:28,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:28,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313523608] [2025-02-08 06:14:28,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313523608] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426132401] [2025-02-08 06:14:28,908 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:14:28,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:28,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:28,911 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:14:28,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-08 06:14:28,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-02-08 06:14:29,028 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-02-08 06:14:29,028 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:29,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:29,030 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 87 conjuncts are in the unsatisfiable core [2025-02-08 06:14:29,032 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:29,057 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 06:14:29,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-08 06:14:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:29,972 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:30,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426132401] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:30,914 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:30,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 23] total 66 [2025-02-08 06:14:30,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808790645] [2025-02-08 06:14:30,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:30,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2025-02-08 06:14:30,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:30,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2025-02-08 06:14:30,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=4145, Unknown=0, NotChecked=0, Total=4556 [2025-02-08 06:14:30,916 INFO L87 Difference]: Start difference. First operand 877 states and 986 transitions. Second operand has 68 states, 67 states have (on average 2.6417910447761193) internal successors, (177), 67 states have internal predecessors, (177), 0 states have call successors, (0), 0 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 06:14:33,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:33,466 INFO L93 Difference]: Finished difference Result 1086 states and 1192 transitions. [2025-02-08 06:14:33,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2025-02-08 06:14:33,467 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.6417910447761193) internal successors, (177), 67 states have internal predecessors, (177), 0 states have call successors, (0), 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 59 [2025-02-08 06:14:33,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:33,469 INFO L225 Difference]: With dead ends: 1086 [2025-02-08 06:14:33,469 INFO L226 Difference]: Without dead ends: 927 [2025-02-08 06:14:33,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4021 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1462, Invalid=13058, Unknown=0, NotChecked=0, Total=14520 [2025-02-08 06:14:33,473 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 120 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:33,473 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 978 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2823 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-02-08 06:14:33,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2025-02-08 06:14:33,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 711. [2025-02-08 06:14:33,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 709 states have (on average 1.1071932299012694) internal successors, (785), 710 states have internal predecessors, (785), 0 states have call successors, (0), 0 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 06:14:33,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 785 transitions. [2025-02-08 06:14:33,482 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 785 transitions. Word has length 59 [2025-02-08 06:14:33,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:33,482 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 785 transitions. [2025-02-08 06:14:33,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.6417910447761193) internal successors, (177), 67 states have internal predecessors, (177), 0 states have call successors, (0), 0 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 06:14:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 785 transitions. [2025-02-08 06:14:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-08 06:14:33,483 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:33,483 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:33,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2025-02-08 06:14:33,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2025-02-08 06:14:33,684 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:33,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:33,684 INFO L85 PathProgramCache]: Analyzing trace with hash 771868080, now seen corresponding path program 8 times [2025-02-08 06:14:33,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:33,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016583205] [2025-02-08 06:14:33,684 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:14:33,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:33,695 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-02-08 06:14:33,701 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-02-08 06:14:33,702 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:14:33,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:34,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:34,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016583205] [2025-02-08 06:14:34,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016583205] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:34,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145171515] [2025-02-08 06:14:34,220 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:14:34,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:34,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:34,223 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:14:34,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-08 06:14:34,317 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 61 statements into 2 equivalence classes. [2025-02-08 06:14:34,349 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 61 of 61 statements. [2025-02-08 06:14:34,349 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:14:34,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:34,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 92 conjuncts are in the unsatisfiable core [2025-02-08 06:14:34,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:34,379 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 06:14:35,405 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 17 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:35,406 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:36,425 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 34 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:36,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145171515] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:36,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:36,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20, 20] total 62 [2025-02-08 06:14:36,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912668201] [2025-02-08 06:14:36,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:36,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-02-08 06:14:36,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:36,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-02-08 06:14:36,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=3663, Unknown=0, NotChecked=0, Total=4032 [2025-02-08 06:14:36,427 INFO L87 Difference]: Start difference. First operand 711 states and 785 transitions. Second operand has 64 states, 63 states have (on average 2.9047619047619047) internal successors, (183), 63 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:38,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:38,439 INFO L93 Difference]: Finished difference Result 1007 states and 1088 transitions. [2025-02-08 06:14:38,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2025-02-08 06:14:38,440 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.9047619047619047) internal successors, (183), 63 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-02-08 06:14:38,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:38,442 INFO L225 Difference]: With dead ends: 1007 [2025-02-08 06:14:38,442 INFO L226 Difference]: Without dead ends: 867 [2025-02-08 06:14:38,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2288 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=818, Invalid=7924, Unknown=0, NotChecked=0, Total=8742 [2025-02-08 06:14:38,442 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 83 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 2889 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:38,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 999 Invalid, 2912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2889 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 06:14:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2025-02-08 06:14:38,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 717. [2025-02-08 06:14:38,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 715 states have (on average 1.1062937062937064) internal successors, (791), 716 states have internal predecessors, (791), 0 states have call successors, (0), 0 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 06:14:38,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 791 transitions. [2025-02-08 06:14:38,452 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 791 transitions. Word has length 61 [2025-02-08 06:14:38,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:38,453 INFO L471 AbstractCegarLoop]: Abstraction has 717 states and 791 transitions. [2025-02-08 06:14:38,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.9047619047619047) internal successors, (183), 63 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:38,454 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 791 transitions. [2025-02-08 06:14:38,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-08 06:14:38,455 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:38,456 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:38,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-02-08 06:14:38,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2025-02-08 06:14:38,660 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:38,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:38,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1199855975, now seen corresponding path program 9 times [2025-02-08 06:14:38,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:38,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570324807] [2025-02-08 06:14:38,661 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:38,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:38,668 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 61 statements into 7 equivalence classes. [2025-02-08 06:14:38,683 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 61 of 61 statements. [2025-02-08 06:14:38,683 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-08 06:14:38,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 12 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:39,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:39,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570324807] [2025-02-08 06:14:39,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570324807] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:39,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813422815] [2025-02-08 06:14:39,347 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:39,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:39,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:39,349 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-08 06:14:39,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-02-08 06:14:39,457 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 61 statements into 7 equivalence classes. [2025-02-08 06:14:39,633 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 61 of 61 statements. [2025-02-08 06:14:39,633 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-08 06:14:39,633 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:39,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 72 conjuncts are in the unsatisfiable core [2025-02-08 06:14:39,640 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:39,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:14:40,028 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 18 proven. 95 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 06:14:40,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:40,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:14:40,062 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 16 treesize of output 12 [2025-02-08 06:14:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 18 proven. 95 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 06:14:40,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813422815] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:40,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:40,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19, 19] total 46 [2025-02-08 06:14:40,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763105910] [2025-02-08 06:14:40,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:40,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-08 06:14:40,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:40,134 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-08 06:14:40,134 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1931, Unknown=0, NotChecked=0, Total=2070 [2025-02-08 06:14:40,134 INFO L87 Difference]: Start difference. First operand 717 states and 791 transitions. Second operand has 46 states, 46 states have (on average 2.6956521739130435) internal successors, (124), 46 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:42,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:42,805 INFO L93 Difference]: Finished difference Result 1240 states and 1350 transitions. [2025-02-08 06:14:42,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2025-02-08 06:14:42,805 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.6956521739130435) internal successors, (124), 46 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2025-02-08 06:14:42,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:42,807 INFO L225 Difference]: With dead ends: 1240 [2025-02-08 06:14:42,807 INFO L226 Difference]: Without dead ends: 1053 [2025-02-08 06:14:42,807 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4947 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1130, Invalid=16692, Unknown=0, NotChecked=0, Total=17822 [2025-02-08 06:14:42,808 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 134 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 1896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:42,808 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 582 Invalid, 1896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 06:14:42,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2025-02-08 06:14:42,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 899. [2025-02-08 06:14:42,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 897 states have (on average 1.1081382385730212) internal successors, (994), 898 states have internal predecessors, (994), 0 states have call successors, (0), 0 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 06:14:42,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 994 transitions. [2025-02-08 06:14:42,815 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 994 transitions. Word has length 61 [2025-02-08 06:14:42,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:42,815 INFO L471 AbstractCegarLoop]: Abstraction has 899 states and 994 transitions. [2025-02-08 06:14:42,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.6956521739130435) internal successors, (124), 46 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:42,815 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 994 transitions. [2025-02-08 06:14:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-08 06:14:42,816 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:42,816 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:42,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2025-02-08 06:14:43,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-02-08 06:14:43,020 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:43,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:43,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1422021659, now seen corresponding path program 10 times [2025-02-08 06:14:43,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:43,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340698570] [2025-02-08 06:14:43,021 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:43,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:43,026 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 63 statements into 2 equivalence classes. [2025-02-08 06:14:43,037 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 53 of 63 statements. [2025-02-08 06:14:43,037 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:14:43,037 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 126 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:44,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340698570] [2025-02-08 06:14:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340698570] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:44,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385252809] [2025-02-08 06:14:44,274 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:44,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:44,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:44,276 INFO L229 MonitoredProcess]: Starting monitored process 34 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 06:14:44,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-02-08 06:14:44,379 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 63 statements into 2 equivalence classes. [2025-02-08 06:14:44,409 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 53 of 63 statements. [2025-02-08 06:14:44,410 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:14:44,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:44,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 82 conjuncts are in the unsatisfiable core [2025-02-08 06:14:44,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:44,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2025-02-08 06:14:45,876 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 118 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:45,876 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:46,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 116 [2025-02-08 06:14:46,071 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:14:46,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 36 case distinctions, treesize of input 134 treesize of output 100 [2025-02-08 06:14:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 126 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:46,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385252809] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:46,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:46,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 66 [2025-02-08 06:14:46,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033663751] [2025-02-08 06:14:46,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:46,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2025-02-08 06:14:46,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:46,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2025-02-08 06:14:46,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=650, Invalid=3640, Unknown=0, NotChecked=0, Total=4290 [2025-02-08 06:14:46,776 INFO L87 Difference]: Start difference. First operand 899 states and 994 transitions. Second operand has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 66 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:47,495 INFO L93 Difference]: Finished difference Result 1192 states and 1312 transitions. [2025-02-08 06:14:47,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2025-02-08 06:14:47,495 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 66 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-02-08 06:14:47,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:47,497 INFO L225 Difference]: With dead ends: 1192 [2025-02-08 06:14:47,497 INFO L226 Difference]: Without dead ends: 1162 [2025-02-08 06:14:47,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 91 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2158 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=874, Invalid=4978, Unknown=0, NotChecked=0, Total=5852 [2025-02-08 06:14:47,498 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 22 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:47,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 304 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 06:14:47,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2025-02-08 06:14:47,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1100. [2025-02-08 06:14:47,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1098 states have (on average 1.1092896174863387) internal successors, (1218), 1099 states have internal predecessors, (1218), 0 states have call successors, (0), 0 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 06:14:47,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1218 transitions. [2025-02-08 06:14:47,505 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1218 transitions. Word has length 63 [2025-02-08 06:14:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:47,505 INFO L471 AbstractCegarLoop]: Abstraction has 1100 states and 1218 transitions. [2025-02-08 06:14:47,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.121212121212121) internal successors, (140), 66 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:47,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1218 transitions. [2025-02-08 06:14:47,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-08 06:14:47,506 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:47,506 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:47,516 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2025-02-08 06:14:47,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:47,712 INFO L396 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:47,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:47,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1801159800, now seen corresponding path program 11 times [2025-02-08 06:14:47,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:47,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331871715] [2025-02-08 06:14:47,713 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:47,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:47,720 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 66 statements into 10 equivalence classes. [2025-02-08 06:14:47,728 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 06:14:47,729 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-02-08 06:14:47,729 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 94 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:48,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:48,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331871715] [2025-02-08 06:14:48,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331871715] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:48,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803884458] [2025-02-08 06:14:48,074 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:48,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:48,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:48,076 INFO L229 MonitoredProcess]: Starting monitored process 35 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 06:14:48,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2025-02-08 06:14:48,169 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 66 statements into 10 equivalence classes. [2025-02-08 06:14:48,228 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 66 of 66 statements. [2025-02-08 06:14:48,229 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-02-08 06:14:48,229 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:48,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-02-08 06:14:48,234 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:48,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-08 06:14:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 92 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:48,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 92 proven. 151 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:49,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803884458] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:49,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:49,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 58 [2025-02-08 06:14:49,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998934878] [2025-02-08 06:14:49,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:49,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-02-08 06:14:49,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:49,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-02-08 06:14:49,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=519, Invalid=2903, Unknown=0, NotChecked=0, Total=3422 [2025-02-08 06:14:49,269 INFO L87 Difference]: Start difference. First operand 1100 states and 1218 transitions. Second operand has 59 states, 58 states have (on average 2.8275862068965516) internal successors, (164), 59 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:50,016 INFO L93 Difference]: Finished difference Result 1249 states and 1379 transitions. [2025-02-08 06:14:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 06:14:50,017 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 2.8275862068965516) internal successors, (164), 59 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2025-02-08 06:14:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:50,019 INFO L225 Difference]: With dead ends: 1249 [2025-02-08 06:14:50,019 INFO L226 Difference]: Without dead ends: 1249 [2025-02-08 06:14:50,019 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1388 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=554, Invalid=2986, Unknown=0, NotChecked=0, Total=3540 [2025-02-08 06:14:50,020 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 102 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 2007 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 2029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:50,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 902 Invalid, 2029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2007 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-08 06:14:50,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2025-02-08 06:14:50,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1121. [2025-02-08 06:14:50,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1121 states, 1119 states have (on average 1.1126005361930296) internal successors, (1245), 1120 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 06:14:50,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1245 transitions. [2025-02-08 06:14:50,027 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1245 transitions. Word has length 66 [2025-02-08 06:14:50,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:50,027 INFO L471 AbstractCegarLoop]: Abstraction has 1121 states and 1245 transitions. [2025-02-08 06:14:50,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 2.8275862068965516) internal successors, (164), 59 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:50,027 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1245 transitions. [2025-02-08 06:14:50,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2025-02-08 06:14:50,029 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:50,029 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:50,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2025-02-08 06:14:50,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:50,233 INFO L396 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:50,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:50,234 INFO L85 PathProgramCache]: Analyzing trace with hash -138091195, now seen corresponding path program 10 times [2025-02-08 06:14:50,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:50,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953033742] [2025-02-08 06:14:50,234 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:50,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:50,243 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 68 statements into 2 equivalence classes. [2025-02-08 06:14:50,263 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-02-08 06:14:50,263 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:50,263 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 21 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:50,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953033742] [2025-02-08 06:14:50,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953033742] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:50,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463514272] [2025-02-08 06:14:50,913 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:50,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:50,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:50,916 INFO L229 MonitoredProcess]: Starting monitored process 36 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 06:14:50,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2025-02-08 06:14:51,021 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 68 statements into 2 equivalence classes. [2025-02-08 06:14:51,188 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 68 of 68 statements. [2025-02-08 06:14:51,188 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:51,188 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:51,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 86 conjuncts are in the unsatisfiable core [2025-02-08 06:14:51,193 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:51,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:14:51,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-08 06:14:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 21 proven. 135 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 06:14:51,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:51,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:14:51,631 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 16 treesize of output 12 [2025-02-08 06:14:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 21 proven. 135 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-08 06:14:51,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463514272] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:51,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:51,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 21] total 43 [2025-02-08 06:14:51,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703952384] [2025-02-08 06:14:51,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:51,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-08 06:14:51,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:51,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-08 06:14:51,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1686, Unknown=0, NotChecked=0, Total=1806 [2025-02-08 06:14:51,711 INFO L87 Difference]: Start difference. First operand 1121 states and 1245 transitions. Second operand has 43 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 43 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:52,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:52,387 INFO L93 Difference]: Finished difference Result 1527 states and 1695 transitions. [2025-02-08 06:14:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2025-02-08 06:14:52,388 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 43 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2025-02-08 06:14:52,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:52,391 INFO L225 Difference]: With dead ends: 1527 [2025-02-08 06:14:52,391 INFO L226 Difference]: Without dead ends: 1439 [2025-02-08 06:14:52,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=2197, Unknown=0, NotChecked=0, Total=2352 [2025-02-08 06:14:52,391 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 22 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:52,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 839 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 06:14:52,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2025-02-08 06:14:52,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1349. [2025-02-08 06:14:52,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 1347 states have (on average 1.1180400890868596) internal successors, (1506), 1348 states have internal predecessors, (1506), 0 states have call successors, (0), 0 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 06:14:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1506 transitions. [2025-02-08 06:14:52,401 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1506 transitions. Word has length 68 [2025-02-08 06:14:52,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:52,401 INFO L471 AbstractCegarLoop]: Abstraction has 1349 states and 1506 transitions. [2025-02-08 06:14:52,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.9767441860465116) internal successors, (128), 43 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:52,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1506 transitions. [2025-02-08 06:14:52,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-08 06:14:52,405 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:52,405 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:52,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2025-02-08 06:14:52,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,36 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:52,606 INFO L396 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:52,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:52,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1325214453, now seen corresponding path program 12 times [2025-02-08 06:14:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:52,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764102435] [2025-02-08 06:14:52,607 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:14:52,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:52,613 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 69 statements into 11 equivalence classes. [2025-02-08 06:14:52,635 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 69 of 69 statements. [2025-02-08 06:14:52,635 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-08 06:14:52,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:53,416 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 70 proven. 202 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:53,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:53,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764102435] [2025-02-08 06:14:53,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764102435] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:53,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034112443] [2025-02-08 06:14:53,416 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:14:53,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:53,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:53,419 INFO L229 MonitoredProcess]: Starting monitored process 37 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 06:14:53,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2025-02-08 06:14:53,519 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 69 statements into 11 equivalence classes. [2025-02-08 06:14:53,630 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 69 of 69 statements. [2025-02-08 06:14:53,630 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-08 06:14:53,630 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:53,633 INFO L256 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 72 conjuncts are in the unsatisfiable core [2025-02-08 06:14:53,634 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:53,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-08 06:14:54,219 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 20 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:54,219 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:54,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-08 06:14:54,255 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 16 treesize of output 12 [2025-02-08 06:14:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 20 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:54,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034112443] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:54,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:54,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 55 [2025-02-08 06:14:54,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755827047] [2025-02-08 06:14:54,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:54,354 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-02-08 06:14:54,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:54,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-02-08 06:14:54,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=2776, Unknown=0, NotChecked=0, Total=2970 [2025-02-08 06:14:54,356 INFO L87 Difference]: Start difference. First operand 1349 states and 1506 transitions. Second operand has 55 states, 55 states have (on average 2.581818181818182) internal successors, (142), 55 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 06:14:56,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:56,674 INFO L93 Difference]: Finished difference Result 1959 states and 2171 transitions. [2025-02-08 06:14:56,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-02-08 06:14:56,675 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.581818181818182) internal successors, (142), 55 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) Word has length 69 [2025-02-08 06:14:56,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:56,678 INFO L225 Difference]: With dead ends: 1959 [2025-02-08 06:14:56,678 INFO L226 Difference]: Without dead ends: 1926 [2025-02-08 06:14:56,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2156 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=703, Invalid=8999, Unknown=0, NotChecked=0, Total=9702 [2025-02-08 06:14:56,680 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 315 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 3315 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 3410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 3315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:56,680 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1146 Invalid, 3410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 3315 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2025-02-08 06:14:56,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1926 states. [2025-02-08 06:14:56,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1926 to 1607. [2025-02-08 06:14:56,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1605 states have (on average 1.1258566978193147) internal successors, (1807), 1606 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 06:14:56,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 1807 transitions. [2025-02-08 06:14:56,694 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 1807 transitions. Word has length 69 [2025-02-08 06:14:56,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:56,694 INFO L471 AbstractCegarLoop]: Abstraction has 1607 states and 1807 transitions. [2025-02-08 06:14:56,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.581818181818182) internal successors, (142), 55 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 06:14:56,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 1807 transitions. [2025-02-08 06:14:56,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-08 06:14:56,695 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:56,695 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:56,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2025-02-08 06:14:56,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,37 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:56,897 INFO L396 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2025-02-08 06:14:56,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:56,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1006573748, now seen corresponding path program 11 times [2025-02-08 06:14:56,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:56,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928883843] [2025-02-08 06:14:56,898 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:56,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:56,906 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 69 statements into 6 equivalence classes. [2025-02-08 06:14:56,917 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 69 of 69 statements. [2025-02-08 06:14:56,917 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-08 06:14:56,917 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 20 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:57,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928883843] [2025-02-08 06:14:57,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928883843] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:57,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154032219] [2025-02-08 06:14:57,659 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:57,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:57,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:57,662 INFO L229 MonitoredProcess]: Starting monitored process 38 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 06:14:57,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2025-02-08 06:14:57,764 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 69 statements into 6 equivalence classes. [2025-02-08 06:14:57,900 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 69 of 69 statements. [2025-02-08 06:14:57,900 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-08 06:14:57,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:57,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 113 conjuncts are in the unsatisfiable core [2025-02-08 06:14:57,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:57,939 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