./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-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_cstrncmp-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 e0283c4a072a13e5b82b0728b718582152e385c6ee1404b3ed9be4e37b84a0b2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 06:13:40,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:13:40,776 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-08 06:13:40,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:13:40,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:13:40,796 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:13:40,797 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:13:40,797 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:13:40,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:13:40,797 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:13:40,797 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:13:40,797 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:13:40,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:13:40,797 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:13:40,797 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:13:40,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:13:40,798 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:13:40,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:13:40,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:13:40,799 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:13:40,799 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:13:40,799 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 06:13:40,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 06:13:40,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:13:40,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:13:40,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:13:40,799 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:13:40,799 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 -> e0283c4a072a13e5b82b0728b718582152e385c6ee1404b3ed9be4e37b84a0b2 [2025-02-08 06:13:41,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:13:41,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:13:41,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:13:41,034 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:13:41,034 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:13:41,035 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i [2025-02-08 06:13:42,357 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/88f030116/f5fdf11d44e14d8aa7c236727cf6a0ae/FLAG2aaaf96fa [2025-02-08 06:13:42,623 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:13:42,624 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncmp-alloca-2.i [2025-02-08 06:13:42,633 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/88f030116/f5fdf11d44e14d8aa7c236727cf6a0ae/FLAG2aaaf96fa [2025-02-08 06:13:42,910 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/88f030116/f5fdf11d44e14d8aa7c236727cf6a0ae [2025-02-08 06:13:42,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:13:42,916 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:13:42,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:13:42,917 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:13:42,920 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:13:42,920 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:13:42" (1/1) ... [2025-02-08 06:13:42,921 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f78af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:42, skipping insertion in model container [2025-02-08 06:13:42,921 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:13:42" (1/1) ... [2025-02-08 06:13:42,938 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:13:43,083 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 06:13:43,084 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 06:13:43,086 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:13:43,092 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 06:13:43,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:13:43,134 INFO L204 MainTranslator]: Completed translation [2025-02-08 06:13:43,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43 WrapperNode [2025-02-08 06:13:43,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:13:43,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 06:13:43,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 06:13:43,137 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 06:13:43,140 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,147 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,157 INFO L138 Inliner]: procedures = 117, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 104 [2025-02-08 06:13:43,158 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 06:13:43,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 06:13:43,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 06:13:43,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 06:13:43,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,169 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,177 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [5, 4]. 56 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 4 writes are split as follows [2, 2]. [2025-02-08 06:13:43,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,177 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,180 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,180 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,181 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 06:13:43,183 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 06:13:43,183 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 06:13:43,183 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 06:13:43,184 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (1/1) ... [2025-02-08 06:13:43,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:13:43,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:43,207 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 06:13:43,209 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 06:13:43,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 06:13:43,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-08 06:13:43,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 06:13:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-08 06:13:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-08 06:13:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 06:13:43,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 06:13:43,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 06:13:43,295 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 06:13:43,296 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 06:13:43,510 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L550: havoc main_#t~nondet19#1;havoc main_#t~ret20#1;call ULTIMATE.dealloc(main_#t~malloc13#1.base, main_#t~malloc13#1.offset);havoc main_#t~malloc13#1.base, main_#t~malloc13#1.offset;call ULTIMATE.dealloc(main_#t~malloc14#1.base, main_#t~malloc14#1.offset);havoc main_#t~malloc14#1.base, main_#t~malloc14#1.offset; [2025-02-08 06:13:43,520 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2025-02-08 06:13:43,520 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 06:13:43,527 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 06:13:43,527 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 06:13:43,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:13:43 BoogieIcfgContainer [2025-02-08 06:13:43,527 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 06:13:43,529 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 06:13:43,529 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 06:13:43,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 06:13:43,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 06:13:42" (1/3) ... [2025-02-08 06:13:43,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f757194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:13:43, skipping insertion in model container [2025-02-08 06:13:43,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:13:43" (2/3) ... [2025-02-08 06:13:43,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f757194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:13:43, skipping insertion in model container [2025-02-08 06:13:43,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:13:43" (3/3) ... [2025-02-08 06:13:43,534 INFO L128 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncmp-alloca-2.i [2025-02-08 06:13:43,543 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 06:13:43,545 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG openbsd_cstrncmp-alloca-2.i that has 1 procedures, 50 locations, 1 initial locations, 3 loop locations, and 19 error locations. [2025-02-08 06:13:43,569 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 06:13:43,577 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;@7e74e5c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 06:13:43,577 INFO L334 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2025-02-08 06:13:43,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states 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 06:13:43,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:13:43,583 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:43,584 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:13:43,584 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:43,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:43,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1545677092, now seen corresponding path program 1 times [2025-02-08 06:13:43,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:43,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147132658] [2025-02-08 06:13:43,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:43,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:43,662 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:13:43,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:13:43,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:43,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:43,768 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 06:13:43,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:43,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147132658] [2025-02-08 06:13:43,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147132658] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:43,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:43,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:43,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650420500] [2025-02-08 06:13:43,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:43,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:43,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:43,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:43,795 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:43,796 INFO L87 Difference]: Start difference. First operand has 50 states, 29 states have (on average 1.9655172413793103) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 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 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:43,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:43,846 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2025-02-08 06:13:43,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:13:43,850 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-08 06:13:43,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:43,854 INFO L225 Difference]: With dead ends: 60 [2025-02-08 06:13:43,855 INFO L226 Difference]: Without dead ends: 56 [2025-02-08 06:13:43,859 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 06:13:43,862 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 9 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:43,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 143 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:43,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-08 06:13:43,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 49. [2025-02-08 06:13:43,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.8333333333333333) internal successors, (55), 48 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:43,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2025-02-08 06:13:43,895 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 6 [2025-02-08 06:13:43,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:43,895 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2025-02-08 06:13:43,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:43,895 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2025-02-08 06:13:43,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:13:43,896 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:43,896 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:13:43,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 06:13:43,896 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:43,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:43,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1544753571, now seen corresponding path program 1 times [2025-02-08 06:13:43,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:43,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92155016] [2025-02-08 06:13:43,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:43,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:43,907 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:13:43,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:13:43,940 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:43,940 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:44,200 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 06:13:44,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:44,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92155016] [2025-02-08 06:13:44,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92155016] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:44,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:44,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:13:44,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562180578] [2025-02-08 06:13:44,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:44,205 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:44,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:44,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:44,205 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:44,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:44,288 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2025-02-08 06:13:44,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:44,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-08 06:13:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:44,289 INFO L225 Difference]: With dead ends: 63 [2025-02-08 06:13:44,289 INFO L226 Difference]: Without dead ends: 63 [2025-02-08 06:13:44,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:44,290 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 41 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:44,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 88 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:44,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-08 06:13:44,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 47. [2025-02-08 06:13:44,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 46 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 06:13:44,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2025-02-08 06:13:44,297 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 6 [2025-02-08 06:13:44,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:44,297 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2025-02-08 06:13:44,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:44,298 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2025-02-08 06:13:44,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-08 06:13:44,298 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:44,298 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-08 06:13:44,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 06:13:44,299 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:44,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:44,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1544753570, now seen corresponding path program 1 times [2025-02-08 06:13:44,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:44,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829363057] [2025-02-08 06:13:44,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:44,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:44,312 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-08 06:13:44,321 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-08 06:13:44,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:44,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:44,492 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 06:13:44,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:44,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829363057] [2025-02-08 06:13:44,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829363057] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:44,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:44,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:13:44,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848872659] [2025-02-08 06:13:44,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:44,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:44,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:44,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:44,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:44,496 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:44,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:44,591 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2025-02-08 06:13:44,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:44,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-08 06:13:44,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:44,595 INFO L225 Difference]: With dead ends: 50 [2025-02-08 06:13:44,595 INFO L226 Difference]: Without dead ends: 50 [2025-02-08 06:13:44,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:44,596 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 19 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:44,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 100 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:44,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-08 06:13:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2025-02-08 06:13:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.75) internal successors, (56), 48 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 06:13:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2025-02-08 06:13:44,603 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 6 [2025-02-08 06:13:44,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:44,603 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2025-02-08 06:13:44,603 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:44,603 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2025-02-08 06:13:44,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:13:44,604 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:44,604 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:44,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-08 06:13:44,604 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:44,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash -671354476, now seen corresponding path program 1 times [2025-02-08 06:13:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783483970] [2025-02-08 06:13:44,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:44,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:44,617 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:13:44,619 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:13:44,619 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:44,619 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:44,660 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 06:13:44,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:44,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783483970] [2025-02-08 06:13:44,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783483970] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:44,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:44,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:44,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707986773] [2025-02-08 06:13:44,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:44,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:44,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:44,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:44,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:44,663 INFO L87 Difference]: Start difference. First operand 49 states and 56 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 06:13:44,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:44,681 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2025-02-08 06:13:44,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:13:44,682 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 06:13:44,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:44,683 INFO L225 Difference]: With dead ends: 63 [2025-02-08 06:13:44,683 INFO L226 Difference]: Without dead ends: 63 [2025-02-08 06:13:44,683 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 06:13:44,684 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 8 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:44,684 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 93 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:44,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-08 06:13:44,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2025-02-08 06:13:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2025-02-08 06:13:44,692 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 7 [2025-02-08 06:13:44,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:44,692 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2025-02-08 06:13:44,692 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 06:13:44,692 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2025-02-08 06:13:44,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:13:44,692 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:44,692 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:44,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 06:13:44,693 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:44,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash -671354635, now seen corresponding path program 1 times [2025-02-08 06:13:44,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:44,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362909054] [2025-02-08 06:13:44,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:44,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:44,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:13:44,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:13:44,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:44,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:44,826 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 06:13:44,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:44,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362909054] [2025-02-08 06:13:44,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362909054] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:44,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:44,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:13:44,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818179487] [2025-02-08 06:13:44,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:44,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:44,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:44,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:44,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:44,829 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) 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 06:13:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:44,897 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2025-02-08 06:13:44,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:13:44,898 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 06:13:44,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:44,898 INFO L225 Difference]: With dead ends: 65 [2025-02-08 06:13:44,899 INFO L226 Difference]: Without dead ends: 65 [2025-02-08 06:13:44,899 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 06:13:44,900 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:44,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 110 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-08 06:13:44,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2025-02-08 06:13:44,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 62 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 06:13:44,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2025-02-08 06:13:44,903 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 7 [2025-02-08 06:13:44,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:44,904 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2025-02-08 06:13:44,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) 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 06:13:44,904 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2025-02-08 06:13:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:13:44,904 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:44,904 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:44,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-08 06:13:44,904 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:44,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:44,908 INFO L85 PathProgramCache]: Analyzing trace with hash -670430955, now seen corresponding path program 1 times [2025-02-08 06:13:44,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:44,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151740188] [2025-02-08 06:13:44,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:44,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:44,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:13:44,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:13:44,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:44,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:44,957 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 06:13:44,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:44,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151740188] [2025-02-08 06:13:44,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151740188] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:44,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:44,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:13:44,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344961517] [2025-02-08 06:13:44,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:44,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:13:44,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:44,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:13:44,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:13:44,959 INFO L87 Difference]: Start difference. First operand 63 states and 76 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 06:13:44,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:44,988 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2025-02-08 06:13:44,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:13:44,988 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 06:13:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:44,989 INFO L225 Difference]: With dead ends: 61 [2025-02-08 06:13:44,989 INFO L226 Difference]: Without dead ends: 61 [2025-02-08 06:13:44,989 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 06:13:44,989 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:44,989 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 59 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:44,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-08 06:13:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-02-08 06:13:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 60 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 06:13:44,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2025-02-08 06:13:44,996 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 7 [2025-02-08 06:13:44,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:44,996 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2025-02-08 06:13:44,996 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 06:13:44,996 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2025-02-08 06:13:44,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:13:44,996 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:44,997 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:44,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 06:13:44,997 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:44,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:44,997 INFO L85 PathProgramCache]: Analyzing trace with hash -670430954, now seen corresponding path program 1 times [2025-02-08 06:13:44,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:44,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259468849] [2025-02-08 06:13:44,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:44,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:45,001 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:13:45,005 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:13:45,005 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:45,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:45,098 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 06:13:45,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:45,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259468849] [2025-02-08 06:13:45,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259468849] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:45,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:45,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:45,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967370441] [2025-02-08 06:13:45,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:45,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:13:45,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:45,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:13:45,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:45,099 INFO L87 Difference]: Start difference. First operand 61 states and 73 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 06:13:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:45,163 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2025-02-08 06:13:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:13:45,163 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 06:13:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:45,163 INFO L225 Difference]: With dead ends: 67 [2025-02-08 06:13:45,163 INFO L226 Difference]: Without dead ends: 67 [2025-02-08 06:13:45,164 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:45,164 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:45,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 102 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:45,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-08 06:13:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 65. [2025-02-08 06:13:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.58) internal successors, (79), 64 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 06:13:45,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 79 transitions. [2025-02-08 06:13:45,167 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 79 transitions. Word has length 7 [2025-02-08 06:13:45,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:45,168 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 79 transitions. [2025-02-08 06:13:45,168 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 06:13:45,168 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 79 transitions. [2025-02-08 06:13:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:13:45,168 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:45,168 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:45,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 06:13:45,168 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:45,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:45,169 INFO L85 PathProgramCache]: Analyzing trace with hash -642725484, now seen corresponding path program 1 times [2025-02-08 06:13:45,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:45,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342788452] [2025-02-08 06:13:45,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:45,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:45,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:13:45,176 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:13:45,176 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:45,176 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:45,253 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 06:13:45,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:45,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342788452] [2025-02-08 06:13:45,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342788452] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:45,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:45,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:13:45,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819456740] [2025-02-08 06:13:45,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:45,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:45,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:45,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:45,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:45,255 INFO L87 Difference]: Start difference. First operand 65 states and 79 transitions. Second operand has 5 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 06:13:45,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:45,271 INFO L93 Difference]: Finished difference Result 64 states and 78 transitions. [2025-02-08 06:13:45,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:45,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 06:13:45,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:45,272 INFO L225 Difference]: With dead ends: 64 [2025-02-08 06:13:45,272 INFO L226 Difference]: Without dead ends: 64 [2025-02-08 06:13:45,272 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 06:13:45,272 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 16 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:45,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 96 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:45,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2025-02-08 06:13:45,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2025-02-08 06:13:45,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 43 states have (on average 1.5813953488372092) internal successors, (68), 56 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 06:13:45,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2025-02-08 06:13:45,275 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 7 [2025-02-08 06:13:45,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:45,275 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2025-02-08 06:13:45,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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 06:13:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2025-02-08 06:13:45,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 06:13:45,276 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:45,276 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:45,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 06:13:45,276 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:45,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:45,276 INFO L85 PathProgramCache]: Analyzing trace with hash 662842775, now seen corresponding path program 1 times [2025-02-08 06:13:45,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:45,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796798608] [2025-02-08 06:13:45,277 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:45,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:45,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 06:13:45,285 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 06:13:45,285 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:45,285 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:45,349 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 06:13:45,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:45,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796798608] [2025-02-08 06:13:45,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796798608] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:45,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:45,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:13:45,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216986486] [2025-02-08 06:13:45,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:45,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:45,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:45,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:45,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:45,352 INFO L87 Difference]: Start difference. First operand 57 states and 68 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 06:13:45,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:45,390 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2025-02-08 06:13:45,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:13:45,390 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 06:13:45,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:45,390 INFO L225 Difference]: With dead ends: 60 [2025-02-08 06:13:45,390 INFO L226 Difference]: Without dead ends: 60 [2025-02-08 06:13:45,391 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 06:13:45,391 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:45,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 101 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:45,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-08 06:13:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2025-02-08 06:13:45,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 58 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 06:13:45,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2025-02-08 06:13:45,393 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 8 [2025-02-08 06:13:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:45,393 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2025-02-08 06:13:45,393 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 06:13:45,396 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2025-02-08 06:13:45,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-08 06:13:45,396 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:45,396 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:45,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 06:13:45,397 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:45,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:45,398 INFO L85 PathProgramCache]: Analyzing trace with hash 691471926, now seen corresponding path program 1 times [2025-02-08 06:13:45,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:45,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85302387] [2025-02-08 06:13:45,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:45,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-08 06:13:45,407 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-08 06:13:45,409 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:45,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:45,534 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 06:13:45,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:45,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85302387] [2025-02-08 06:13:45,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85302387] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:45,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:45,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:13:45,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442283415] [2025-02-08 06:13:45,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:45,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:13:45,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:45,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:13:45,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:45,535 INFO L87 Difference]: Start difference. First operand 59 states and 70 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 06:13:45,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:45,574 INFO L93 Difference]: Finished difference Result 62 states and 73 transitions. [2025-02-08 06:13:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:13:45,575 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 06:13:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:45,575 INFO L225 Difference]: With dead ends: 62 [2025-02-08 06:13:45,575 INFO L226 Difference]: Without dead ends: 62 [2025-02-08 06:13:45,575 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:45,576 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 15 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:45,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 86 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-08 06:13:45,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2025-02-08 06:13:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 58 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 06:13:45,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2025-02-08 06:13:45,578 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 8 [2025-02-08 06:13:45,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:45,578 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2025-02-08 06:13:45,579 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 06:13:45,579 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2025-02-08 06:13:45,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-08 06:13:45,579 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:45,579 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:45,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 06:13:45,579 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:45,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash 820965944, now seen corresponding path program 1 times [2025-02-08 06:13:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870223557] [2025-02-08 06:13:45,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:45,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:45,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 06:13:45,588 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 06:13:45,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:45,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:45,730 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 06:13:45,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:45,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870223557] [2025-02-08 06:13:45,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870223557] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:45,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532078753] [2025-02-08 06:13:45,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:45,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:45,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:45,736 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 06:13:45,737 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 06:13:45,773 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-08 06:13:45,781 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-08 06:13:45,781 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:45,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:45,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-08 06:13:45,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:45,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-08 06:13:45,836 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 06:13:45,845 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 06:13:45,961 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 06:13:45,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:46,078 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:13:46,087 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 06:13:46,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532078753] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:46,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:46,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2025-02-08 06:13:46,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056406876] [2025-02-08 06:13:46,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:46,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 06:13:46,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:46,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 06:13:46,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2025-02-08 06:13:46,089 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 06:13:46,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:46,214 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2025-02-08 06:13:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:13:46,215 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 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 06:13:46,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:46,215 INFO L225 Difference]: With dead ends: 62 [2025-02-08 06:13:46,215 INFO L226 Difference]: Without dead ends: 62 [2025-02-08 06:13:46,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:13:46,216 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 15 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:46,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 161 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:46,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-08 06:13:46,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2025-02-08 06:13:46,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 53 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 06:13:46,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2025-02-08 06:13:46,219 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 9 [2025-02-08 06:13:46,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:46,219 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2025-02-08 06:13:46,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states 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 06:13:46,219 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2025-02-08 06:13:46,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-08 06:13:46,219 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:46,219 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:46,226 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 06:13:46,424 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,SelfDestructingSolverStorable10 [2025-02-08 06:13:46,424 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:46,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:46,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1210636998, now seen corresponding path program 1 times [2025-02-08 06:13:46,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:46,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719273346] [2025-02-08 06:13:46,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:46,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:46,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 06:13:46,433 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 06:13:46,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:46,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:46,578 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 06:13:46,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:46,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719273346] [2025-02-08 06:13:46,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719273346] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:46,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720058267] [2025-02-08 06:13:46,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:46,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:46,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:46,582 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 06:13:46,583 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 06:13:46,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-08 06:13:46,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-08 06:13:46,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:46,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:46,628 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 06:13:46,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:46,656 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 06:13:46,662 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 8 treesize of output 1 [2025-02-08 06:13:46,773 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 06:13:46,774 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:46,898 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 06:13:46,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720058267] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:46,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:46,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2025-02-08 06:13:46,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541825041] [2025-02-08 06:13:46,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:46,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-08 06:13:46,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:46,899 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-08 06:13:46,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-02-08 06:13:46,899 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 06:13:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:47,056 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2025-02-08 06:13:47,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:13:47,056 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 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 06:13:47,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:47,057 INFO L225 Difference]: With dead ends: 55 [2025-02-08 06:13:47,057 INFO L226 Difference]: Without dead ends: 55 [2025-02-08 06:13:47,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2025-02-08 06:13:47,057 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 14 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:47,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 186 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:47,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-08 06:13:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2025-02-08 06:13:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 40 states have (on average 1.5) internal successors, (60), 51 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 06:13:47,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2025-02-08 06:13:47,059 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 10 [2025-02-08 06:13:47,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:47,059 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2025-02-08 06:13:47,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 0 states have call successors, (0), 0 states 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 06:13:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2025-02-08 06:13:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 06:13:47,059 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:47,059 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:47,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 06:13:47,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:47,260 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:47,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1124953746, now seen corresponding path program 1 times [2025-02-08 06:13:47,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:47,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808269439] [2025-02-08 06:13:47,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:47,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:47,265 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 06:13:47,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 06:13:47,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:47,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:47,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:13:47,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:47,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808269439] [2025-02-08 06:13:47,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808269439] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:47,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:47,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 06:13:47,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347300002] [2025-02-08 06:13:47,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:47,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 06:13:47,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:47,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 06:13:47,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:47,392 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 06:13:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:47,423 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2025-02-08 06:13:47,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 06:13:47,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 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 06:13:47,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:47,424 INFO L225 Difference]: With dead ends: 51 [2025-02-08 06:13:47,424 INFO L226 Difference]: Without dead ends: 51 [2025-02-08 06:13:47,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:47,424 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:47,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 87 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:47,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-08 06:13:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2025-02-08 06:13:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 37 states have (on average 1.4864864864864864) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2025-02-08 06:13:47,426 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 11 [2025-02-08 06:13:47,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:47,426 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2025-02-08 06:13:47,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states 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 06:13:47,426 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2025-02-08 06:13:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 06:13:47,427 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:47,427 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:47,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-08 06:13:47,427 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:47,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:47,427 INFO L85 PathProgramCache]: Analyzing trace with hash 417966194, now seen corresponding path program 1 times [2025-02-08 06:13:47,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:47,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638678208] [2025-02-08 06:13:47,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:47,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:47,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 06:13:47,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 06:13:47,434 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:47,434 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:47,460 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 06:13:47,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:47,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638678208] [2025-02-08 06:13:47,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638678208] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:47,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:47,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:13:47,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344552771] [2025-02-08 06:13:47,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:47,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:47,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:47,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:47,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:47,461 INFO L87 Difference]: Start difference. First operand 48 states and 55 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 06:13:47,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:47,492 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2025-02-08 06:13:47,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:13:47,493 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 06:13:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:47,493 INFO L225 Difference]: With dead ends: 46 [2025-02-08 06:13:47,493 INFO L226 Difference]: Without dead ends: 46 [2025-02-08 06:13:47,493 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 06:13:47,493 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 54 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 06:13:47,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 54 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:47,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-08 06:13:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-02-08 06:13:47,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 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 06:13:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2025-02-08 06:13:47,495 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 12 [2025-02-08 06:13:47,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:47,495 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2025-02-08 06:13:47,495 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 06:13:47,495 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2025-02-08 06:13:47,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 06:13:47,495 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:47,495 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:47,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-08 06:13:47,495 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:47,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:47,495 INFO L85 PathProgramCache]: Analyzing trace with hash 417966195, now seen corresponding path program 1 times [2025-02-08 06:13:47,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:47,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368398630] [2025-02-08 06:13:47,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:47,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:47,500 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 06:13:47,502 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 06:13:47,502 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:47,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:47,562 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 06:13:47,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:47,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368398630] [2025-02-08 06:13:47,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368398630] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:47,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:47,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:13:47,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016601514] [2025-02-08 06:13:47,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:47,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:13:47,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:47,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:13:47,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:13:47,563 INFO L87 Difference]: Start difference. First operand 46 states and 53 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 06:13:47,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:47,614 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2025-02-08 06:13:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 06:13:47,614 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 06:13:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:47,614 INFO L225 Difference]: With dead ends: 63 [2025-02-08 06:13:47,614 INFO L226 Difference]: Without dead ends: 63 [2025-02-08 06:13:47,615 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 06:13:47,615 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 20 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:47,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 117 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:47,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-08 06:13:47,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2025-02-08 06:13:47,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 43 states have (on average 1.441860465116279) internal successors, (62), 51 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 06:13:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2025-02-08 06:13:47,618 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 12 [2025-02-08 06:13:47,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:47,619 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2025-02-08 06:13:47,619 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 06:13:47,619 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2025-02-08 06:13:47,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-08 06:13:47,619 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:47,619 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:47,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-08 06:13:47,620 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:47,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:47,621 INFO L85 PathProgramCache]: Analyzing trace with hash -2061413393, now seen corresponding path program 1 times [2025-02-08 06:13:47,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:47,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418159017] [2025-02-08 06:13:47,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:47,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:47,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 06:13:47,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 06:13:47,628 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:47,628 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:47,665 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 06:13:47,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:47,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418159017] [2025-02-08 06:13:47,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418159017] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:47,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:47,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:47,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109286254] [2025-02-08 06:13:47,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:47,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:47,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:47,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:47,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:47,666 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 06:13:47,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:47,705 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2025-02-08 06:13:47,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:47,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-08 06:13:47,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:47,705 INFO L225 Difference]: With dead ends: 51 [2025-02-08 06:13:47,707 INFO L226 Difference]: Without dead ends: 51 [2025-02-08 06:13:47,707 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 06:13:47,707 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:47,708 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 73 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:47,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-08 06:13:47,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-02-08 06:13:47,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 50 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 06:13:47,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2025-02-08 06:13:47,709 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 14 [2025-02-08 06:13:47,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:47,709 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2025-02-08 06:13:47,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 06:13:47,709 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2025-02-08 06:13:47,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-08 06:13:47,709 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:47,709 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:47,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-08 06:13:47,709 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:47,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:47,710 INFO L85 PathProgramCache]: Analyzing trace with hash -2061413392, now seen corresponding path program 1 times [2025-02-08 06:13:47,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:47,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707112763] [2025-02-08 06:13:47,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:47,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:47,716 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 06:13:47,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 06:13:47,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:47,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:47,795 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 06:13:47,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:47,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707112763] [2025-02-08 06:13:47,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707112763] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:47,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:47,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 06:13:47,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007451404] [2025-02-08 06:13:47,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:47,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 06:13:47,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:47,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 06:13:47,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:47,797 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 06:13:47,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:47,853 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2025-02-08 06:13:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:13:47,854 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-08 06:13:47,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:47,854 INFO L225 Difference]: With dead ends: 55 [2025-02-08 06:13:47,854 INFO L226 Difference]: Without dead ends: 55 [2025-02-08 06:13:47,854 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 06:13:47,855 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 16 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 111 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 06:13:47,855 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 111 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:47,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-08 06:13:47,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2025-02-08 06:13:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 43 states have (on average 1.372093023255814) internal successors, (59), 50 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 06:13:47,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2025-02-08 06:13:47,856 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 14 [2025-02-08 06:13:47,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:47,856 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2025-02-08 06:13:47,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states 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 06:13:47,856 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2025-02-08 06:13:47,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 06:13:47,856 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:47,857 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:47,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-08 06:13:47,857 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:47,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:47,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1038347360, now seen corresponding path program 1 times [2025-02-08 06:13:47,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:47,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414041302] [2025-02-08 06:13:47,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:47,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:47,863 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 06:13:47,866 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 06:13:47,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:47,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:47,896 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 06:13:47,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:47,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414041302] [2025-02-08 06:13:47,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414041302] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:47,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:47,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:47,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376318945] [2025-02-08 06:13:47,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:47,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:47,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:47,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:47,897 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:47,897 INFO L87 Difference]: Start difference. First operand 51 states and 59 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 06:13:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:47,932 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2025-02-08 06:13:47,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:47,933 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 06:13:47,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:47,933 INFO L225 Difference]: With dead ends: 50 [2025-02-08 06:13:47,933 INFO L226 Difference]: Without dead ends: 50 [2025-02-08 06:13:47,933 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 06:13:47,934 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 16 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:47,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 71 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:47,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-08 06:13:47,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-02-08 06:13:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 49 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 06:13:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2025-02-08 06:13:47,935 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 16 [2025-02-08 06:13:47,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:47,935 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2025-02-08 06:13:47,935 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 06:13:47,935 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2025-02-08 06:13:47,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-08 06:13:47,936 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:47,936 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:47,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-08 06:13:47,936 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:47,936 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:47,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1038347359, now seen corresponding path program 1 times [2025-02-08 06:13:47,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:47,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782236354] [2025-02-08 06:13:47,937 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:47,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:47,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-08 06:13:47,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-08 06:13:47,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:47,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:48,043 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 06:13:48,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:48,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782236354] [2025-02-08 06:13:48,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782236354] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:48,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:48,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 06:13:48,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119581685] [2025-02-08 06:13:48,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:48,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 06:13:48,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:48,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 06:13:48,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:13:48,044 INFO L87 Difference]: Start difference. First operand 50 states and 58 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 06:13:48,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:48,103 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2025-02-08 06:13:48,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:13:48,104 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 06:13:48,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:48,104 INFO L225 Difference]: With dead ends: 60 [2025-02-08 06:13:48,104 INFO L226 Difference]: Without dead ends: 60 [2025-02-08 06:13:48,104 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 06:13:48,105 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:48,105 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 128 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:48,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-08 06:13:48,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2025-02-08 06:13:48,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 50 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 06:13:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2025-02-08 06:13:48,106 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 16 [2025-02-08 06:13:48,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:48,106 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2025-02-08 06:13:48,106 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 06:13:48,106 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2025-02-08 06:13:48,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-08 06:13:48,106 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:48,106 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:48,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-08 06:13:48,106 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:48,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:48,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1419450583, now seen corresponding path program 1 times [2025-02-08 06:13:48,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:48,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157824782] [2025-02-08 06:13:48,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:48,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:48,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 06:13:48,114 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 06:13:48,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:48,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:48,150 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 06:13:48,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:48,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157824782] [2025-02-08 06:13:48,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157824782] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:48,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:48,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:48,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340720689] [2025-02-08 06:13:48,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:48,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:48,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:48,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:48,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:48,152 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:48,177 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2025-02-08 06:13:48,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:48,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-02-08 06:13:48,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:48,178 INFO L225 Difference]: With dead ends: 50 [2025-02-08 06:13:48,178 INFO L226 Difference]: Without dead ends: 50 [2025-02-08 06:13:48,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:48,178 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:48,179 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 73 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:48,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-08 06:13:48,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2025-02-08 06:13:48,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 49 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 06:13:48,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2025-02-08 06:13:48,181 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2025-02-08 06:13:48,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:48,181 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2025-02-08 06:13:48,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:48,181 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2025-02-08 06:13:48,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-08 06:13:48,182 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:48,182 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:48,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-08 06:13:48,182 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:48,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:48,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1419450582, now seen corresponding path program 1 times [2025-02-08 06:13:48,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:48,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286828354] [2025-02-08 06:13:48,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:48,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:48,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-08 06:13:48,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-08 06:13:48,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:48,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:48,334 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 06:13:48,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:48,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286828354] [2025-02-08 06:13:48,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286828354] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:48,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:48,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 06:13:48,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812958075] [2025-02-08 06:13:48,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:48,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 06:13:48,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:48,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 06:13:48,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:13:48,336 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:48,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:48,423 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2025-02-08 06:13:48,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:13:48,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-02-08 06:13:48,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:48,424 INFO L225 Difference]: With dead ends: 63 [2025-02-08 06:13:48,424 INFO L226 Difference]: Without dead ends: 60 [2025-02-08 06:13:48,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-08 06:13:48,424 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 25 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:48,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 132 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:48,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-08 06:13:48,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 49. [2025-02-08 06:13:48,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.302325581395349) internal successors, (56), 48 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 06:13:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2025-02-08 06:13:48,426 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 18 [2025-02-08 06:13:48,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:48,426 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2025-02-08 06:13:48,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:48,426 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2025-02-08 06:13:48,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 06:13:48,427 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:48,427 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 06:13:48,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-02-08 06:13:48,427 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:48,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:48,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1051757946, now seen corresponding path program 1 times [2025-02-08 06:13:48,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:48,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081816817] [2025-02-08 06:13:48,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:48,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:48,432 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 06:13:48,436 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 06:13:48,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:48,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:48,501 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 06:13:48,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:48,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081816817] [2025-02-08 06:13:48,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081816817] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:48,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:48,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:13:48,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025093755] [2025-02-08 06:13:48,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:48,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:13:48,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:48,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:13:48,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:13:48,502 INFO L87 Difference]: Start difference. First operand 49 states and 56 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 06:13:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:48,516 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2025-02-08 06:13:48,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:13:48,516 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 06:13:48,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:48,517 INFO L225 Difference]: With dead ends: 48 [2025-02-08 06:13:48,517 INFO L226 Difference]: Without dead ends: 46 [2025-02-08 06:13:48,517 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 06:13:48,518 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:48,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 53 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:48,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-08 06:13:48,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2025-02-08 06:13:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 45 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 06:13:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2025-02-08 06:13:48,519 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 19 [2025-02-08 06:13:48,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:48,519 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2025-02-08 06:13:48,519 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 06:13:48,520 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2025-02-08 06:13:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 06:13:48,520 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:48,520 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:48,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-08 06:13:48,520 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:48,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:48,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1755303641, now seen corresponding path program 1 times [2025-02-08 06:13:48,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:48,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972539446] [2025-02-08 06:13:48,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:48,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:48,525 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 06:13:48,534 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 06:13:48,534 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:48,534 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:48,683 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 06:13:48,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:48,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972539446] [2025-02-08 06:13:48,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972539446] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:48,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:48,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-08 06:13:48,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833914904] [2025-02-08 06:13:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:48,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-08 06:13:48,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:48,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-08 06:13:48,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:13:48,685 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 06:13:48,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:48,753 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2025-02-08 06:13:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-08 06:13:48,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2025-02-08 06:13:48,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:48,754 INFO L225 Difference]: With dead ends: 61 [2025-02-08 06:13:48,754 INFO L226 Difference]: Without dead ends: 41 [2025-02-08 06:13:48,754 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 06:13:48,754 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:48,755 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 168 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:48,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-08 06:13:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2025-02-08 06:13:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.25) internal successors, (45), 40 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 06:13:48,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2025-02-08 06:13:48,756 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 20 [2025-02-08 06:13:48,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:48,756 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2025-02-08 06:13:48,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 06:13:48,756 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2025-02-08 06:13:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 06:13:48,757 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:48,757 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:48,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-02-08 06:13:48,757 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:48,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:48,757 INFO L85 PathProgramCache]: Analyzing trace with hash 910831770, now seen corresponding path program 1 times [2025-02-08 06:13:48,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:48,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515576235] [2025-02-08 06:13:48,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:48,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:48,763 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 06:13:48,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 06:13:48,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:48,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:48,915 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 06:13:48,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:48,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515576235] [2025-02-08 06:13:48,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515576235] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:48,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:48,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 06:13:48,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912355196] [2025-02-08 06:13:48,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:48,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-08 06:13:48,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:48,916 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-08 06:13:48,916 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-02-08 06:13:48,916 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 06:13:48,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:48,960 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2025-02-08 06:13:48,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:13:48,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2025-02-08 06:13:48,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:48,961 INFO L225 Difference]: With dead ends: 62 [2025-02-08 06:13:48,961 INFO L226 Difference]: Without dead ends: 47 [2025-02-08 06:13:48,961 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 06:13:48,962 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:48,962 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 142 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:48,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-08 06:13:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2025-02-08 06:13:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.236842105263158) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states 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 06:13:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2025-02-08 06:13:48,963 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 20 [2025-02-08 06:13:48,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:48,963 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2025-02-08 06:13:48,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states 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 06:13:48,963 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2025-02-08 06:13:48,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-08 06:13:48,964 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:48,964 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, 1] [2025-02-08 06:13:48,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-02-08 06:13:48,964 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:48,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:48,964 INFO L85 PathProgramCache]: Analyzing trace with hash -287084812, now seen corresponding path program 1 times [2025-02-08 06:13:48,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:48,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119421427] [2025-02-08 06:13:48,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:48,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:48,969 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 06:13:48,973 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 06:13:48,973 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:48,973 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:49,089 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 06:13:49,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:49,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119421427] [2025-02-08 06:13:49,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119421427] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:49,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930805558] [2025-02-08 06:13:49,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:49,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:49,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:49,095 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 06:13:49,096 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 06:13:49,147 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-08 06:13:49,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-08 06:13:49,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:49,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:49,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-08 06:13:49,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:49,260 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 06:13:49,260 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:49,378 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 06:13:49,425 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 06:13:49,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930805558] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:49,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:49,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2025-02-08 06:13:49,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983935612] [2025-02-08 06:13:49,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:49,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-08 06:13:49,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:49,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-08 06:13:49,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2025-02-08 06:13:49,426 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 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 06:13:49,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:49,625 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2025-02-08 06:13:49,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:13:49,626 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2025-02-08 06:13:49,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:49,627 INFO L225 Difference]: With dead ends: 55 [2025-02-08 06:13:49,627 INFO L226 Difference]: Without dead ends: 55 [2025-02-08 06:13:49,627 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2025-02-08 06:13:49,629 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 29 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:49,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 177 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:49,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-08 06:13:49,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 46. [2025-02-08 06:13:49,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 42 states have (on average 1.1904761904761905) internal successors, (50), 45 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 06:13:49,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2025-02-08 06:13:49,630 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 23 [2025-02-08 06:13:49,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:49,630 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2025-02-08 06:13:49,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 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 06:13:49,630 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2025-02-08 06:13:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-08 06:13:49,633 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:49,633 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:49,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-08 06:13:49,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:49,833 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:49,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:49,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1010598351, now seen corresponding path program 1 times [2025-02-08 06:13:49,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:49,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327102725] [2025-02-08 06:13:49,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:49,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:49,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 06:13:49,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 06:13:49,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:49,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:49,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:49,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:49,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327102725] [2025-02-08 06:13:49,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327102725] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:49,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:49,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-08 06:13:49,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872649192] [2025-02-08 06:13:49,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:49,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-08 06:13:49,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:49,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-08 06:13:49,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-02-08 06:13:49,997 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 06:13:50,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:50,052 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2025-02-08 06:13:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:13:50,053 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2025-02-08 06:13:50,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:50,053 INFO L225 Difference]: With dead ends: 57 [2025-02-08 06:13:50,053 INFO L226 Difference]: Without dead ends: 40 [2025-02-08 06:13:50,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-02-08 06:13:50,054 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:50,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 179 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-02-08 06:13:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-02-08 06:13:50,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2025-02-08 06:13:50,055 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 25 [2025-02-08 06:13:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:50,055 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2025-02-08 06:13:50,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 06:13:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2025-02-08 06:13:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-02-08 06:13:50,055 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:50,056 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:50,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-08 06:13:50,056 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:50,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:50,056 INFO L85 PathProgramCache]: Analyzing trace with hash 234166130, now seen corresponding path program 1 times [2025-02-08 06:13:50,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:50,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864074915] [2025-02-08 06:13:50,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:50,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:50,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-02-08 06:13:50,071 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-02-08 06:13:50,071 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:50,071 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:50,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:50,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:50,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864074915] [2025-02-08 06:13:50,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864074915] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:50,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:50,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-02-08 06:13:50,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940447221] [2025-02-08 06:13:50,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:50,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-08 06:13:50,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:50,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-08 06:13:50,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-08 06:13:50,415 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 06:13:50,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:50,483 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2025-02-08 06:13:50,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 06:13:50,484 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 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 25 [2025-02-08 06:13:50,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:50,484 INFO L225 Difference]: With dead ends: 54 [2025-02-08 06:13:50,484 INFO L226 Difference]: Without dead ends: 43 [2025-02-08 06:13:50,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-02-08 06:13:50,485 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 18 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:50,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 149 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:50,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-08 06:13:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2025-02-08 06:13:50,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 06:13:50,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2025-02-08 06:13:50,488 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 25 [2025-02-08 06:13:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:50,488 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2025-02-08 06:13:50,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states 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 06:13:50,488 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2025-02-08 06:13:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-08 06:13:50,488 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:50,488 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:50,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-08 06:13:50,488 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:50,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:50,489 INFO L85 PathProgramCache]: Analyzing trace with hash 429840692, now seen corresponding path program 1 times [2025-02-08 06:13:50,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:50,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223521760] [2025-02-08 06:13:50,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:50,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:50,498 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 06:13:50,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 06:13:50,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:50,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:50,694 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:50,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:50,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223521760] [2025-02-08 06:13:50,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223521760] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:50,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601611496] [2025-02-08 06:13:50,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:50,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:50,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:50,701 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 06:13:50,703 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 06:13:50,757 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-08 06:13:50,773 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-08 06:13:50,774 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:50,774 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:50,775 INFO L256 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-08 06:13:50,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:50,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:51,122 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 06:13:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:51,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601611496] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:51,160 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:51,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2025-02-08 06:13:51,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683181493] [2025-02-08 06:13:51,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:51,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 06:13:51,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:51,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 06:13:51,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2025-02-08 06:13:51,161 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 21 states, 20 states have (on average 3.0) internal successors, (60), 21 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 06:13:51,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:51,390 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2025-02-08 06:13:51,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 06:13:51,391 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 21 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) Word has length 28 [2025-02-08 06:13:51,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:51,392 INFO L225 Difference]: With dead ends: 45 [2025-02-08 06:13:51,392 INFO L226 Difference]: Without dead ends: 45 [2025-02-08 06:13:51,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2025-02-08 06:13:51,392 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 5 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:51,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 176 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:13:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-08 06:13:51,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2025-02-08 06:13:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 39 states have (on average 1.1538461538461537) internal successors, (45), 42 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 06:13:51,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2025-02-08 06:13:51,393 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 28 [2025-02-08 06:13:51,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:51,393 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2025-02-08 06:13:51,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.0) internal successors, (60), 21 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 06:13:51,393 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2025-02-08 06:13:51,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-08 06:13:51,394 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:51,394 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:51,400 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 06:13:51,594 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,SelfDestructingSolverStorable27 [2025-02-08 06:13:51,595 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:51,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:51,595 INFO L85 PathProgramCache]: Analyzing trace with hash 760043493, now seen corresponding path program 1 times [2025-02-08 06:13:51,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:51,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38314901] [2025-02-08 06:13:51,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:51,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:51,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 06:13:51,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 06:13:51,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:51,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:51,779 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:51,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:51,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38314901] [2025-02-08 06:13:51,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38314901] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:51,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157006447] [2025-02-08 06:13:51,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:51,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:51,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:51,781 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 06:13:51,783 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 06:13:51,824 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-08 06:13:51,841 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-08 06:13:51,841 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:51,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:51,842 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-02-08 06:13:51,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:51,877 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2025-02-08 06:13:51,878 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 1 case distinctions, treesize of input 13 treesize of output 19 [2025-02-08 06:13:52,462 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 06:13:52,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:52,927 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 06:13:52,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157006447] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:52,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:52,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15, 13] total 35 [2025-02-08 06:13:52,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835034079] [2025-02-08 06:13:52,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:52,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-08 06:13:52,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:52,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-08 06:13:52,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1095, Unknown=0, NotChecked=0, Total=1260 [2025-02-08 06:13:52,932 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 36 states, 35 states have (on average 2.4) internal successors, (84), 36 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 06:13:53,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:53,703 INFO L93 Difference]: Finished difference Result 91 states and 102 transitions. [2025-02-08 06:13:53,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-08 06:13:53,704 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.4) internal successors, (84), 36 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) Word has length 30 [2025-02-08 06:13:53,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:53,705 INFO L225 Difference]: With dead ends: 91 [2025-02-08 06:13:53,705 INFO L226 Difference]: Without dead ends: 91 [2025-02-08 06:13:53,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=391, Invalid=2689, Unknown=0, NotChecked=0, Total=3080 [2025-02-08 06:13:53,707 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 57 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:53,710 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 189 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:13:53,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-02-08 06:13:53,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 42. [2025-02-08 06:13:53,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 41 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 06:13:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2025-02-08 06:13:53,712 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 30 [2025-02-08 06:13:53,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:53,712 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2025-02-08 06:13:53,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.4) internal successors, (84), 36 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 06:13:53,712 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2025-02-08 06:13:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-08 06:13:53,712 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:53,712 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:53,733 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 06:13:53,912 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,SelfDestructingSolverStorable28 [2025-02-08 06:13:53,913 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:53,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:53,914 INFO L85 PathProgramCache]: Analyzing trace with hash 257305198, now seen corresponding path program 1 times [2025-02-08 06:13:53,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:53,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398694862] [2025-02-08 06:13:53,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:53,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:53,920 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-08 06:13:53,925 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 06:13:53,925 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:53,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:54,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:54,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398694862] [2025-02-08 06:13:54,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398694862] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:54,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363864593] [2025-02-08 06:13:54,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:54,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:54,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:54,096 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 06:13:54,097 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 06:13:54,142 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-08 06:13:54,158 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 06:13:54,159 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:54,159 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:54,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-08 06:13:54,161 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:54,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:54,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:54,377 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 06:13:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:54,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363864593] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:54,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:54,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2025-02-08 06:13:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314179120] [2025-02-08 06:13:54,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:54,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 06:13:54,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:54,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 06:13:54,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2025-02-08 06:13:54,399 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand has 23 states, 22 states have (on average 3.090909090909091) internal successors, (68), 23 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 06:13:54,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:54,556 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2025-02-08 06:13:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 06:13:54,556 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.090909090909091) internal successors, (68), 23 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 32 [2025-02-08 06:13:54,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:54,556 INFO L225 Difference]: With dead ends: 55 [2025-02-08 06:13:54,556 INFO L226 Difference]: Without dead ends: 52 [2025-02-08 06:13:54,557 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2025-02-08 06:13:54,557 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 12 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:54,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 235 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:54,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-08 06:13:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2025-02-08 06:13:54,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.125) internal successors, (45), 42 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 06:13:54,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2025-02-08 06:13:54,558 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 32 [2025-02-08 06:13:54,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:54,558 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2025-02-08 06:13:54,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.090909090909091) internal successors, (68), 23 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 06:13:54,558 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2025-02-08 06:13:54,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-08 06:13:54,558 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:54,558 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 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 06:13:54,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-08 06:13:54,759 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:54,759 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:54,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:54,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1790095075, now seen corresponding path program 1 times [2025-02-08 06:13:54,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:54,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874788173] [2025-02-08 06:13:54,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:54,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:54,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-08 06:13:54,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 06:13:54,772 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:54,772 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:55,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:55,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874788173] [2025-02-08 06:13:55,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874788173] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:55,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590624076] [2025-02-08 06:13:55,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:13:55,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:55,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:55,046 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 06:13:55,047 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 06:13:55,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-08 06:13:55,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-08 06:13:55,113 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:13:55,113 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:55,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-08 06:13:55,119 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:55,193 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 06:13:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:55,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:55,268 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 06:13:55,270 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 06:13:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:55,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590624076] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:55,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:55,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 21 [2025-02-08 06:13:55,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742110675] [2025-02-08 06:13:55,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:55,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 06:13:55,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:55,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 06:13:55,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2025-02-08 06:13:55,313 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 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 06:13:55,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:55,407 INFO L93 Difference]: Finished difference Result 71 states and 74 transitions. [2025-02-08 06:13:55,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 06:13:55,407 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-02-08 06:13:55,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:55,408 INFO L225 Difference]: With dead ends: 71 [2025-02-08 06:13:55,408 INFO L226 Difference]: Without dead ends: 48 [2025-02-08 06:13:55,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2025-02-08 06:13:55,409 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:55,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 224 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:55,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-02-08 06:13:55,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2025-02-08 06:13:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 45 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 06:13:55,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2025-02-08 06:13:55,410 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 34 [2025-02-08 06:13:55,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:55,410 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2025-02-08 06:13:55,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 21 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 06:13:55,410 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2025-02-08 06:13:55,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-08 06:13:55,410 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:55,410 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:55,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-08 06:13:55,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:55,612 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:55,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1739450841, now seen corresponding path program 2 times [2025-02-08 06:13:55,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:55,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526049611] [2025-02-08 06:13:55,612 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:55,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:55,619 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-08 06:13:55,629 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 06:13:55,629 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:13:55,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:55,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:55,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526049611] [2025-02-08 06:13:55,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526049611] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:55,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46122660] [2025-02-08 06:13:55,805 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:55,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:55,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:55,807 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 06:13:55,808 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 06:13:55,861 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 37 statements into 2 equivalence classes. [2025-02-08 06:13:55,882 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 37 of 37 statements. [2025-02-08 06:13:55,882 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:13:55,882 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:55,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-08 06:13:55,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:55,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:55,993 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:56,126 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 06:13:56,158 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:13:56,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46122660] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:56,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:56,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2025-02-08 06:13:56,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972796997] [2025-02-08 06:13:56,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:56,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 06:13:56,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:56,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 06:13:56,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2025-02-08 06:13:56,159 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 06:13:56,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:56,288 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2025-02-08 06:13:56,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 06:13:56,288 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 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 06:13:56,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:56,289 INFO L225 Difference]: With dead ends: 56 [2025-02-08 06:13:56,289 INFO L226 Difference]: Without dead ends: 56 [2025-02-08 06:13:56,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2025-02-08 06:13:56,289 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 13 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:56,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 191 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:56,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-08 06:13:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2025-02-08 06:13:56,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 50 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 06:13:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2025-02-08 06:13:56,294 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 37 [2025-02-08 06:13:56,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:56,294 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2025-02-08 06:13:56,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.05) internal successors, (81), 21 states have internal predecessors, (81), 0 states have call successors, (0), 0 states 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 06:13:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2025-02-08 06:13:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-08 06:13:56,295 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:56,295 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:56,301 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 06:13:56,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:56,499 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:56,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:56,500 INFO L85 PathProgramCache]: Analyzing trace with hash 869979094, now seen corresponding path program 2 times [2025-02-08 06:13:56,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:56,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247531234] [2025-02-08 06:13:56,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:56,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:56,507 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-02-08 06:13:56,530 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 06:13:56,530 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:13:56,530 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:56,795 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:13:56,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:56,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247531234] [2025-02-08 06:13:56,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247531234] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:56,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892373468] [2025-02-08 06:13:56,796 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:56,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:56,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:56,799 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 06:13:56,800 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 06:13:56,851 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 39 statements into 2 equivalence classes. [2025-02-08 06:13:56,872 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 39 of 39 statements. [2025-02-08 06:13:56,873 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:13:56,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:56,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 66 conjuncts are in the unsatisfiable core [2025-02-08 06:13:56,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:57,034 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 06:13:57,325 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:13:57,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:57,382 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 20 treesize of output 12 [2025-02-08 06:13:57,464 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 06:13:57,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2025-02-08 06:13:57,533 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:13:57,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892373468] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:57,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:57,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 14] total 39 [2025-02-08 06:13:57,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177128719] [2025-02-08 06:13:57,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:57,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-02-08 06:13:57,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:57,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-02-08 06:13:57,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2025-02-08 06:13:57,535 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:58,040 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2025-02-08 06:13:58,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-08 06:13:58,041 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2025-02-08 06:13:58,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:58,041 INFO L225 Difference]: With dead ends: 75 [2025-02-08 06:13:58,041 INFO L226 Difference]: Without dead ends: 56 [2025-02-08 06:13:58,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2025-02-08 06:13:58,046 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 23 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:58,046 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 363 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:13:58,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-08 06:13:58,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2025-02-08 06:13:58,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 51 states have (on average 1.0980392156862746) internal successors, (56), 53 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 06:13:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2025-02-08 06:13:58,047 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 39 [2025-02-08 06:13:58,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:58,047 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2025-02-08 06:13:58,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:13:58,047 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2025-02-08 06:13:58,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-08 06:13:58,047 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:58,047 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:58,053 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 06:13:58,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:58,248 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:58,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:58,248 INFO L85 PathProgramCache]: Analyzing trace with hash -984750116, now seen corresponding path program 3 times [2025-02-08 06:13:58,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:58,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504696679] [2025-02-08 06:13:58,248 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:13:58,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:58,261 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 3 equivalence classes. [2025-02-08 06:13:58,270 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 06:13:58,271 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 06:13:58,271 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:13:58,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:58,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504696679] [2025-02-08 06:13:58,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504696679] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:58,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328702147] [2025-02-08 06:13:58,588 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:13:58,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:58,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:58,590 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 06:13:58,591 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 06:13:58,643 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 42 statements into 3 equivalence classes. [2025-02-08 06:13:58,671 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 06:13:58,671 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-08 06:13:58,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:58,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-08 06:13:58,675 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:13:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:13:58,791 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:13:58,936 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 7 treesize of output 5 [2025-02-08 06:13:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:13:58,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328702147] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:13:58,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:13:58,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2025-02-08 06:13:58,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814746593] [2025-02-08 06:13:58,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:13:58,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-08 06:13:58,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:58,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-08 06:13:58,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2025-02-08 06:13:58,972 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 25 states, 24 states have (on average 3.5) internal successors, (84), 25 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 06:13:59,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:59,170 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2025-02-08 06:13:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 06:13:59,170 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 25 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) Word has length 42 [2025-02-08 06:13:59,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:59,171 INFO L225 Difference]: With dead ends: 56 [2025-02-08 06:13:59,171 INFO L226 Difference]: Without dead ends: 56 [2025-02-08 06:13:59,171 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2025-02-08 06:13:59,171 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 4 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:59,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 209 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:13:59,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-08 06:13:59,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-02-08 06:13:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 55 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 06:13:59,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2025-02-08 06:13:59,173 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 42 [2025-02-08 06:13:59,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:59,173 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2025-02-08 06:13:59,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 25 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 06:13:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2025-02-08 06:13:59,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-08 06:13:59,173 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:59,173 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:59,181 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 06:13:59,374 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,SelfDestructingSolverStorable33 [2025-02-08 06:13:59,374 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:59,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:59,374 INFO L85 PathProgramCache]: Analyzing trace with hash 437101846, now seen corresponding path program 2 times [2025-02-08 06:13:59,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:59,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914086851] [2025-02-08 06:13:59,374 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:13:59,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:59,380 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 46 statements into 2 equivalence classes. [2025-02-08 06:13:59,382 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 18 of 46 statements. [2025-02-08 06:13:59,383 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 06:13:59,383 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-08 06:13:59,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:59,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914086851] [2025-02-08 06:13:59,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914086851] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:13:59,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:13:59,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:13:59,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355372442] [2025-02-08 06:13:59,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:13:59,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:13:59,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:13:59,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:13:59,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:59,435 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 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 06:13:59,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:13:59,479 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2025-02-08 06:13:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:13:59,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 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 46 [2025-02-08 06:13:59,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:13:59,480 INFO L225 Difference]: With dead ends: 55 [2025-02-08 06:13:59,480 INFO L226 Difference]: Without dead ends: 52 [2025-02-08 06:13:59,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:13:59,480 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 7 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:13:59,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 72 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:13:59,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-08 06:13:59,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-02-08 06:13:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.08) internal successors, (54), 51 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 06:13:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2025-02-08 06:13:59,481 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 46 [2025-02-08 06:13:59,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:13:59,481 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2025-02-08 06:13:59,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 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 06:13:59,481 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2025-02-08 06:13:59,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-08 06:13:59,481 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:13:59,482 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:13:59,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-02-08 06:13:59,482 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:13:59,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:13:59,482 INFO L85 PathProgramCache]: Analyzing trace with hash -804208187, now seen corresponding path program 3 times [2025-02-08 06:13:59,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:13:59,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539666653] [2025-02-08 06:13:59,482 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:13:59,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:13:59,489 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 4 equivalence classes. [2025-02-08 06:13:59,507 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 48 of 48 statements. [2025-02-08 06:13:59,507 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 06:13:59,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:13:59,863 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:13:59,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:13:59,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539666653] [2025-02-08 06:13:59,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539666653] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:13:59,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804761783] [2025-02-08 06:13:59,863 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:13:59,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:13:59,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:13:59,865 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 06:13:59,867 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 06:13:59,922 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 48 statements into 4 equivalence classes. [2025-02-08 06:14:00,010 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 48 of 48 statements. [2025-02-08 06:14:00,011 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-08 06:14:00,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:00,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 64 conjuncts are in the unsatisfiable core [2025-02-08 06:14:00,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:00,119 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 06:14:00,445 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-08 06:14:00,446 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-08 06:14:00,447 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 06:14:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:14:00,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:00,552 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 20 treesize of output 12 [2025-02-08 06:14:00,741 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 06:14:00,743 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 06:14:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:14:00,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804761783] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:00,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:00,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 18] total 41 [2025-02-08 06:14:00,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081489635] [2025-02-08 06:14:00,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:00,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2025-02-08 06:14:00,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:00,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2025-02-08 06:14:00,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1521, Unknown=0, NotChecked=0, Total=1640 [2025-02-08 06:14:00,970 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand has 41 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 41 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:02,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:02,114 INFO L93 Difference]: Finished difference Result 151 states and 156 transitions. [2025-02-08 06:14:02,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2025-02-08 06:14:02,114 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 41 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2025-02-08 06:14:02,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:02,114 INFO L225 Difference]: With dead ends: 151 [2025-02-08 06:14:02,114 INFO L226 Difference]: Without dead ends: 62 [2025-02-08 06:14:02,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=314, Invalid=4242, Unknown=0, NotChecked=0, Total=4556 [2025-02-08 06:14:02,116 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 34 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:02,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 416 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 06:14:02,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-08 06:14:02,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2025-02-08 06:14:02,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 1.0714285714285714) internal successors, (60), 57 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 06:14:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2025-02-08 06:14:02,117 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 48 [2025-02-08 06:14:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:02,117 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2025-02-08 06:14:02,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.8048780487804876) internal successors, (115), 41 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:02,117 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2025-02-08 06:14:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-02-08 06:14:02,117 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:02,117 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:02,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-08 06:14:02,317 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,SelfDestructingSolverStorable35 [2025-02-08 06:14:02,318 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:02,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:02,318 INFO L85 PathProgramCache]: Analyzing trace with hash -644789437, now seen corresponding path program 4 times [2025-02-08 06:14:02,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:02,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072891361] [2025-02-08 06:14:02,318 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:02,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:02,327 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 54 statements into 2 equivalence classes. [2025-02-08 06:14:02,336 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 06:14:02,336 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:02,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:14:02,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:02,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072891361] [2025-02-08 06:14:02,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072891361] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:02,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977134522] [2025-02-08 06:14:02,513 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:02,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:02,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:02,516 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 06:14:02,521 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 06:14:02,580 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 54 statements into 2 equivalence classes. [2025-02-08 06:14:02,635 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 54 of 54 statements. [2025-02-08 06:14:02,635 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:02,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:02,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-08 06:14:02,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:02,851 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:14:02,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:03,001 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 06:14:03,120 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 5 proven. 37 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:14:03,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977134522] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:03,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:03,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 26 [2025-02-08 06:14:03,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805702201] [2025-02-08 06:14:03,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:03,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-08 06:14:03,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:03,121 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-08 06:14:03,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=606, Unknown=0, NotChecked=0, Total=702 [2025-02-08 06:14:03,121 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 27 states, 26 states have (on average 4.538461538461538) internal successors, (118), 27 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 06:14:03,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:03,278 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2025-02-08 06:14:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-08 06:14:03,278 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.538461538461538) internal successors, (118), 27 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 54 [2025-02-08 06:14:03,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:03,279 INFO L225 Difference]: With dead ends: 68 [2025-02-08 06:14:03,279 INFO L226 Difference]: Without dead ends: 68 [2025-02-08 06:14:03,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2025-02-08 06:14:03,280 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:03,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 289 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:14:03,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-08 06:14:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2025-02-08 06:14:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.064516129032258) internal successors, (66), 63 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 06:14:03,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 66 transitions. [2025-02-08 06:14:03,285 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 66 transitions. Word has length 54 [2025-02-08 06:14:03,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:03,285 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 66 transitions. [2025-02-08 06:14:03,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.538461538461538) internal successors, (118), 27 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 06:14:03,285 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 66 transitions. [2025-02-08 06:14:03,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2025-02-08 06:14:03,285 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:03,286 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:03,295 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 06:14:03,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:03,486 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:03,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:03,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1167359296, now seen corresponding path program 4 times [2025-02-08 06:14:03,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:03,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162199283] [2025-02-08 06:14:03,487 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:03,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:03,493 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-02-08 06:14:03,499 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 06:14:03,499 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:03,499 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:14:03,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162199283] [2025-02-08 06:14:03,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162199283] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:03,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103028544] [2025-02-08 06:14:03,703 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:03,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:03,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:03,710 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 06:14:03,711 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 06:14:03,774 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 56 statements into 2 equivalence classes. [2025-02-08 06:14:03,811 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 56 of 56 statements. [2025-02-08 06:14:03,811 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:03,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:03,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-02-08 06:14:03,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:03,819 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 06:14:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:14:04,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:14:04,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103028544] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:04,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:04,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2025-02-08 06:14:04,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174578086] [2025-02-08 06:14:04,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:04,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-08 06:14:04,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:04,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-08 06:14:04,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2025-02-08 06:14:04,430 INFO L87 Difference]: Start difference. First operand 64 states and 66 transitions. Second operand has 32 states, 31 states have (on average 3.935483870967742) internal successors, (122), 32 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 06:14:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:04,650 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2025-02-08 06:14:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-08 06:14:04,651 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.935483870967742) internal successors, (122), 32 states have internal predecessors, (122), 0 states have call successors, (0), 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 56 [2025-02-08 06:14:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:04,651 INFO L225 Difference]: With dead ends: 66 [2025-02-08 06:14:04,651 INFO L226 Difference]: Without dead ends: 66 [2025-02-08 06:14:04,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=1101, Unknown=0, NotChecked=0, Total=1260 [2025-02-08 06:14:04,652 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 6 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:04,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 371 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:14:04,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-02-08 06:14:04,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2025-02-08 06:14:04,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 64 states have (on average 1.0625) internal successors, (68), 65 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 06:14:04,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2025-02-08 06:14:04,653 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 56 [2025-02-08 06:14:04,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:04,653 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2025-02-08 06:14:04,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.935483870967742) internal successors, (122), 32 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 06:14:04,653 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2025-02-08 06:14:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-08 06:14:04,653 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:04,653 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:04,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-08 06:14:04,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:04,854 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:04,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:04,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1478468009, now seen corresponding path program 5 times [2025-02-08 06:14:04,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:04,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133286481] [2025-02-08 06:14:04,854 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:04,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:04,863 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 62 statements into 5 equivalence classes. [2025-02-08 06:14:04,882 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 06:14:04,883 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:14:04,883 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 11 proven. 57 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:14:05,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:05,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133286481] [2025-02-08 06:14:05,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133286481] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:05,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189462351] [2025-02-08 06:14:05,223 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:05,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:05,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:05,225 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 06:14:05,227 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 06:14:05,292 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 62 statements into 5 equivalence classes. [2025-02-08 06:14:05,333 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 62 of 62 statements. [2025-02-08 06:14:05,333 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:14:05,333 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:05,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 65 conjuncts are in the unsatisfiable core [2025-02-08 06:14:05,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:05,406 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 06:14:05,532 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 7 treesize of output 3 [2025-02-08 06:14:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 11 proven. 57 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:14:05,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:05,578 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 8 treesize of output 4 [2025-02-08 06:14:05,645 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 06:14:05,647 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 06:14:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 11 proven. 57 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:14:05,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189462351] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:05,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:05,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2025-02-08 06:14:05,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736283473] [2025-02-08 06:14:05,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:05,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-08 06:14:05,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:05,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-08 06:14:05,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2025-02-08 06:14:05,763 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:05,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:05,968 INFO L93 Difference]: Finished difference Result 116 states and 119 transitions. [2025-02-08 06:14:05,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 06:14:05,969 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-02-08 06:14:05,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:05,969 INFO L225 Difference]: With dead ends: 116 [2025-02-08 06:14:05,969 INFO L226 Difference]: Without dead ends: 71 [2025-02-08 06:14:05,969 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2025-02-08 06:14:05,971 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 9 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:05,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 442 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:14:05,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-08 06:14:05,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2025-02-08 06:14:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.0597014925373134) internal successors, (71), 68 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2025-02-08 06:14:05,973 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 62 [2025-02-08 06:14:05,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:05,973 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2025-02-08 06:14:05,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:05,973 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2025-02-08 06:14:05,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-08 06:14:05,974 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:05,974 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:05,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-08 06:14:06,178 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,SelfDestructingSolverStorable38 [2025-02-08 06:14:06,178 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:06,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:06,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1596454811, now seen corresponding path program 6 times [2025-02-08 06:14:06,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:06,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701614093] [2025-02-08 06:14:06,178 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:14:06,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:06,186 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 65 statements into 5 equivalence classes. [2025-02-08 06:14:06,208 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:14:06,208 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-08 06:14:06,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:06,665 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 5 proven. 73 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:14:06,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:06,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701614093] [2025-02-08 06:14:06,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701614093] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:06,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035999018] [2025-02-08 06:14:06,666 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:14:06,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:06,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:06,672 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 06:14:06,673 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 06:14:06,744 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 65 statements into 5 equivalence classes. [2025-02-08 06:14:06,891 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 65 of 65 statements. [2025-02-08 06:14:06,891 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-02-08 06:14:06,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:06,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 112 conjuncts are in the unsatisfiable core [2025-02-08 06:14:06,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:07,139 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 06:14:07,578 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 11 proven. 78 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:14:07,579 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:07,707 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 20 treesize of output 12 [2025-02-08 06:14:07,873 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 06:14:07,875 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 06:14:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 11 proven. 57 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:14:08,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035999018] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:08,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:08,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 25, 18] total 55 [2025-02-08 06:14:08,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340349690] [2025-02-08 06:14:08,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:08,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-02-08 06:14:08,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:08,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-02-08 06:14:08,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2807, Unknown=0, NotChecked=0, Total=2970 [2025-02-08 06:14:08,048 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand has 55 states, 55 states have (on average 3.090909090909091) internal successors, (170), 55 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 06:14:09,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:09,676 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2025-02-08 06:14:09,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2025-02-08 06:14:09,676 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 3.090909090909091) internal successors, (170), 55 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-02-08 06:14:09,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:09,676 INFO L225 Difference]: With dead ends: 119 [2025-02-08 06:14:09,676 INFO L226 Difference]: Without dead ends: 84 [2025-02-08 06:14:09,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=473, Invalid=8083, Unknown=0, NotChecked=0, Total=8556 [2025-02-08 06:14:09,678 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1779 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 1788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:09,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 512 Invalid, 1788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1779 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 06:14:09,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-02-08 06:14:09,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 78. [2025-02-08 06:14:09,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 77 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 06:14:09,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2025-02-08 06:14:09,685 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 65 [2025-02-08 06:14:09,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:09,685 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2025-02-08 06:14:09,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 3.090909090909091) internal successors, (170), 55 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 06:14:09,685 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2025-02-08 06:14:09,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-08 06:14:09,686 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:09,686 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:09,695 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 06:14:09,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-02-08 06:14:09,886 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:09,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash 590465000, now seen corresponding path program 5 times [2025-02-08 06:14:09,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:09,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223167210] [2025-02-08 06:14:09,887 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:09,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:09,894 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 70 statements into 5 equivalence classes. [2025-02-08 06:14:09,914 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 70 of 70 statements. [2025-02-08 06:14:09,914 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:14:09,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 14 proven. 72 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:14:10,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:10,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223167210] [2025-02-08 06:14:10,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223167210] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:10,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902119475] [2025-02-08 06:14:10,191 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:10,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:10,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:10,193 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 06:14:10,195 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 06:14:10,262 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 70 statements into 5 equivalence classes. [2025-02-08 06:14:10,308 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 70 of 70 statements. [2025-02-08 06:14:10,308 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:14:10,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:10,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 56 conjuncts are in the unsatisfiable core [2025-02-08 06:14:10,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:10,318 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 06:14:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:14:10,530 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:10,916 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 12 proven. 74 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:14:10,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902119475] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:10,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:10,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 36 [2025-02-08 06:14:10,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236215671] [2025-02-08 06:14:10,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:10,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-02-08 06:14:10,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:10,918 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-02-08 06:14:10,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=1140, Unknown=0, NotChecked=0, Total=1332 [2025-02-08 06:14:10,919 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 37 states, 36 states have (on average 4.027777777777778) internal successors, (145), 37 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:11,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:11,239 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2025-02-08 06:14:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 06:14:11,239 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.027777777777778) internal successors, (145), 37 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-02-08 06:14:11,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:11,240 INFO L225 Difference]: With dead ends: 80 [2025-02-08 06:14:11,240 INFO L226 Difference]: Without dead ends: 80 [2025-02-08 06:14:11,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=239, Invalid=1483, Unknown=0, NotChecked=0, Total=1722 [2025-02-08 06:14:11,241 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:11,242 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 416 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:14:11,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-08 06:14:11,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2025-02-08 06:14:11,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 1.0512820512820513) internal successors, (82), 79 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 06:14:11,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2025-02-08 06:14:11,243 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 70 [2025-02-08 06:14:11,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:11,243 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2025-02-08 06:14:11,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.027777777777778) internal successors, (145), 37 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:11,243 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2025-02-08 06:14:11,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2025-02-08 06:14:11,245 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:11,245 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:11,252 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 06:14:11,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:11,446 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:11,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:11,446 INFO L85 PathProgramCache]: Analyzing trace with hash -430479151, now seen corresponding path program 7 times [2025-02-08 06:14:11,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:11,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134807359] [2025-02-08 06:14:11,447 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:14:11,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:11,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-08 06:14:11,483 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 06:14:11,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:11,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:11,930 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 14 proven. 98 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:14:11,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:11,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134807359] [2025-02-08 06:14:11,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134807359] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:11,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21748372] [2025-02-08 06:14:11,931 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:14:11,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:11,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:11,933 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 06:14:11,934 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 06:14:12,019 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 76 statements into 1 equivalence classes. [2025-02-08 06:14:12,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 76 of 76 statements. [2025-02-08 06:14:12,055 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:12,055 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:12,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 68 conjuncts are in the unsatisfiable core [2025-02-08 06:14:12,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:12,165 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 06:14:12,259 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 7 treesize of output 3 [2025-02-08 06:14:12,262 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 14 proven. 98 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:14:12,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:12,286 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 8 treesize of output 4 [2025-02-08 06:14:12,336 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 06:14:12,337 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 06:14:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 14 proven. 98 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:14:12,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21748372] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:12,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:12,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 31 [2025-02-08 06:14:12,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055011672] [2025-02-08 06:14:12,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:12,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-08 06:14:12,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:12,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-08 06:14:12,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2025-02-08 06:14:12,403 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 31 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 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 06:14:12,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:12,632 INFO L93 Difference]: Finished difference Result 141 states and 144 transitions. [2025-02-08 06:14:12,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 06:14:12,632 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 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 76 [2025-02-08 06:14:12,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:12,633 INFO L225 Difference]: With dead ends: 141 [2025-02-08 06:14:12,633 INFO L226 Difference]: Without dead ends: 85 [2025-02-08 06:14:12,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2025-02-08 06:14:12,633 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:12,633 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 646 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:14:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-02-08 06:14:12,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2025-02-08 06:14:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 81 states have (on average 1.0493827160493827) internal successors, (85), 82 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 06:14:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 85 transitions. [2025-02-08 06:14:12,638 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 85 transitions. Word has length 76 [2025-02-08 06:14:12,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:12,638 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 85 transitions. [2025-02-08 06:14:12,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3870967741935485) internal successors, (105), 31 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 06:14:12,638 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 85 transitions. [2025-02-08 06:14:12,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2025-02-08 06:14:12,639 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:12,639 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:12,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-08 06:14:12,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:12,839 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:12,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:12,840 INFO L85 PathProgramCache]: Analyzing trace with hash -158902643, now seen corresponding path program 8 times [2025-02-08 06:14:12,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:12,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159255780] [2025-02-08 06:14:12,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:14:12,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:12,847 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-08 06:14:12,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 06:14:12,856 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:14:12,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 12 proven. 113 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-02-08 06:14:13,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:13,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159255780] [2025-02-08 06:14:13,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159255780] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:13,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937411090] [2025-02-08 06:14:13,235 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:14:13,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:13,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:13,237 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 06:14:13,242 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 06:14:13,385 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 79 statements into 2 equivalence classes. [2025-02-08 06:14:13,448 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 79 of 79 statements. [2025-02-08 06:14:13,448 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:14:13,448 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:13,450 INFO L256 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 106 conjuncts are in the unsatisfiable core [2025-02-08 06:14:13,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:13,573 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 06:14:13,839 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 98 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:14:13,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:13,925 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 20 treesize of output 12 [2025-02-08 06:14:13,964 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 06:14:13,965 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 06:14:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 14 proven. 98 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:14:14,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937411090] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:14,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:14,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20, 20] total 39 [2025-02-08 06:14:14,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809810470] [2025-02-08 06:14:14,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:14,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-02-08 06:14:14,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:14,036 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-02-08 06:14:14,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1389, Unknown=0, NotChecked=0, Total=1482 [2025-02-08 06:14:14,037 INFO L87 Difference]: Start difference. First operand 83 states and 85 transitions. Second operand has 39 states, 39 states have (on average 3.641025641025641) internal successors, (142), 39 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 06:14:15,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:15,135 INFO L93 Difference]: Finished difference Result 141 states and 143 transitions. [2025-02-08 06:14:15,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2025-02-08 06:14:15,136 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.641025641025641) internal successors, (142), 39 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 79 [2025-02-08 06:14:15,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:15,136 INFO L225 Difference]: With dead ends: 141 [2025-02-08 06:14:15,136 INFO L226 Difference]: Without dead ends: 98 [2025-02-08 06:14:15,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 742 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=247, Invalid=4445, Unknown=0, NotChecked=0, Total=4692 [2025-02-08 06:14:15,138 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 14 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:15,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 651 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1989 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 06:14:15,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-02-08 06:14:15,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2025-02-08 06:14:15,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.0444444444444445) internal successors, (94), 91 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 06:14:15,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 94 transitions. [2025-02-08 06:14:15,140 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 94 transitions. Word has length 79 [2025-02-08 06:14:15,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:15,140 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 94 transitions. [2025-02-08 06:14:15,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.641025641025641) internal successors, (142), 39 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 06:14:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 94 transitions. [2025-02-08 06:14:15,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-02-08 06:14:15,141 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:15,141 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:15,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-08 06:14:15,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:15,345 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:15,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:15,346 INFO L85 PathProgramCache]: Analyzing trace with hash 766575692, now seen corresponding path program 6 times [2025-02-08 06:14:15,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:15,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984663181] [2025-02-08 06:14:15,346 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:14:15,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:15,355 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 84 statements into 6 equivalence classes. [2025-02-08 06:14:15,376 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 84 of 84 statements. [2025-02-08 06:14:15,376 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-08 06:14:15,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:15,841 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 12 proven. 123 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:14:15,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:15,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984663181] [2025-02-08 06:14:15,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984663181] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:15,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436615077] [2025-02-08 06:14:15,842 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:14:15,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:15,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:15,844 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 06:14:15,845 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 06:14:15,932 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 84 statements into 6 equivalence classes. [2025-02-08 06:14:16,101 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) and asserted 84 of 84 statements. [2025-02-08 06:14:16,101 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2025-02-08 06:14:16,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:16,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-02-08 06:14:16,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:16,107 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 06:14:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 22 proven. 113 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:14:16,285 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:16,703 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 22 proven. 113 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:14:16,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436615077] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:16,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:16,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 42 [2025-02-08 06:14:16,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990161274] [2025-02-08 06:14:16,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:16,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-08 06:14:16,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:16,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-08 06:14:16,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1579, Unknown=0, NotChecked=0, Total=1806 [2025-02-08 06:14:16,704 INFO L87 Difference]: Start difference. First operand 92 states and 94 transitions. Second operand has 43 states, 42 states have (on average 4.0) internal successors, (168), 43 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 06:14:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:17,052 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2025-02-08 06:14:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 06:14:17,053 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.0) internal successors, (168), 43 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-02-08 06:14:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:17,053 INFO L225 Difference]: With dead ends: 94 [2025-02-08 06:14:17,053 INFO L226 Difference]: Without dead ends: 94 [2025-02-08 06:14:17,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 846 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=374, Invalid=2382, Unknown=0, NotChecked=0, Total=2756 [2025-02-08 06:14:17,054 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:17,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 210 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:14:17,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2025-02-08 06:14:17,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2025-02-08 06:14:17,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 92 states have (on average 1.0434782608695652) internal successors, (96), 93 states have internal predecessors, (96), 0 states have call successors, (0), 0 states 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 06:14:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2025-02-08 06:14:17,055 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 84 [2025-02-08 06:14:17,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:17,056 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2025-02-08 06:14:17,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.0) internal successors, (168), 43 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 06:14:17,056 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2025-02-08 06:14:17,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-08 06:14:17,056 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:17,056 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:17,065 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 06:14:17,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:17,262 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:17,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:17,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1969801781, now seen corresponding path program 9 times [2025-02-08 06:14:17,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:17,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762856929] [2025-02-08 06:14:17,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:17,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:17,276 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 90 statements into 7 equivalence classes. [2025-02-08 06:14:17,302 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 90 of 90 statements. [2025-02-08 06:14:17,302 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-08 06:14:17,302 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 17 proven. 150 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:14:17,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:17,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762856929] [2025-02-08 06:14:17,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762856929] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:17,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858883683] [2025-02-08 06:14:17,829 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:17,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:17,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:17,831 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 06:14:17,832 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 06:14:17,919 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 90 statements into 7 equivalence classes. [2025-02-08 06:14:18,038 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) and asserted 90 of 90 statements. [2025-02-08 06:14:18,038 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2025-02-08 06:14:18,038 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:18,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 88 conjuncts are in the unsatisfiable core [2025-02-08 06:14:18,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:18,228 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 06:14:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 17 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:18,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:18,533 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 06:14:18,534 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 06:14:18,706 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 17 proven. 150 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:14:18,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858883683] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:18,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:18,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 19] total 43 [2025-02-08 06:14:18,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098777286] [2025-02-08 06:14:18,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:18,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-08 06:14:18,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:18,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-08 06:14:18,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1672, Unknown=0, NotChecked=0, Total=1806 [2025-02-08 06:14:18,708 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand has 43 states, 43 states have (on average 4.0) internal successors, (172), 43 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 06:14:19,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:19,219 INFO L93 Difference]: Finished difference Result 168 states and 171 transitions. [2025-02-08 06:14:19,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-08 06:14:19,220 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.0) internal successors, (172), 43 states have internal predecessors, (172), 0 states have call successors, (0), 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 90 [2025-02-08 06:14:19,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:19,220 INFO L225 Difference]: With dead ends: 168 [2025-02-08 06:14:19,220 INFO L226 Difference]: Without dead ends: 99 [2025-02-08 06:14:19,222 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=164, Invalid=2188, Unknown=0, NotChecked=0, Total=2352 [2025-02-08 06:14:19,222 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 9 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:19,222 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 843 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-08 06:14:19,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2025-02-08 06:14:19,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 97. [2025-02-08 06:14:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 95 states have (on average 1.0421052631578946) internal successors, (99), 96 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:19,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2025-02-08 06:14:19,224 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 90 [2025-02-08 06:14:19,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:19,224 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2025-02-08 06:14:19,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.0) internal successors, (172), 43 states have internal predecessors, (172), 0 states have call successors, (0), 0 states 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 06:14:19,224 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2025-02-08 06:14:19,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-08 06:14:19,224 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:19,224 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:19,232 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 06:14:19,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:19,425 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:19,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:19,425 INFO L85 PathProgramCache]: Analyzing trace with hash 634912497, now seen corresponding path program 10 times [2025-02-08 06:14:19,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:19,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481413586] [2025-02-08 06:14:19,426 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:19,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:19,436 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 93 statements into 2 equivalence classes. [2025-02-08 06:14:19,445 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-08 06:14:19,445 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:19,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 37 proven. 146 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:14:19,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:19,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481413586] [2025-02-08 06:14:19,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481413586] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:19,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433321315] [2025-02-08 06:14:19,803 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:19,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:19,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:19,805 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 06:14:19,807 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 06:14:19,890 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 93 statements into 2 equivalence classes. [2025-02-08 06:14:20,011 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 93 of 93 statements. [2025-02-08 06:14:20,011 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:20,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:20,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 67 conjuncts are in the unsatisfiable core [2025-02-08 06:14:20,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:20,304 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 35 proven. 148 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:14:20,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:20,550 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 06:14:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 35 proven. 148 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2025-02-08 06:14:20,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433321315] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:20,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:20,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 42 [2025-02-08 06:14:20,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868046263] [2025-02-08 06:14:20,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:20,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-08 06:14:20,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:20,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-08 06:14:20,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=1565, Unknown=0, NotChecked=0, Total=1806 [2025-02-08 06:14:20,762 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand has 43 states, 42 states have (on average 4.595238095238095) internal successors, (193), 43 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 06:14:21,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:21,113 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2025-02-08 06:14:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-08 06:14:21,113 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.595238095238095) internal successors, (193), 43 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2025-02-08 06:14:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:21,115 INFO L225 Difference]: With dead ends: 107 [2025-02-08 06:14:21,115 INFO L226 Difference]: Without dead ends: 107 [2025-02-08 06:14:21,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=275, Invalid=1705, Unknown=0, NotChecked=0, Total=1980 [2025-02-08 06:14:21,115 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:21,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 655 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:14:21,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-02-08 06:14:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2025-02-08 06:14:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.0396039603960396) internal successors, (105), 102 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 06:14:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 105 transitions. [2025-02-08 06:14:21,117 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 105 transitions. Word has length 93 [2025-02-08 06:14:21,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:21,117 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 105 transitions. [2025-02-08 06:14:21,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.595238095238095) internal successors, (193), 43 states have internal predecessors, (193), 0 states have call successors, (0), 0 states 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 06:14:21,117 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 105 transitions. [2025-02-08 06:14:21,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2025-02-08 06:14:21,117 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:21,117 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:21,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2025-02-08 06:14:21,320 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,SelfDestructingSolverStorable45 [2025-02-08 06:14:21,320 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:21,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:21,321 INFO L85 PathProgramCache]: Analyzing trace with hash 265552622, now seen corresponding path program 7 times [2025-02-08 06:14:21,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:21,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109672679] [2025-02-08 06:14:21,321 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:14:21,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:21,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-02-08 06:14:21,348 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-02-08 06:14:21,348 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:21,348 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 29 proven. 201 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:22,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:22,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109672679] [2025-02-08 06:14:22,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109672679] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:22,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347682850] [2025-02-08 06:14:22,167 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:14:22,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:22,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:22,169 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 06:14:22,170 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 06:14:22,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-02-08 06:14:22,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-02-08 06:14:22,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:22,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:22,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 126 conjuncts are in the unsatisfiable core [2025-02-08 06:14:22,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:22,470 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 06:14:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 29 proven. 150 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:14:22,598 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:22,688 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 20 treesize of output 12 [2025-02-08 06:14:22,734 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 06:14:22,735 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 06:14:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 29 proven. 150 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:14:22,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347682850] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:22,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:22,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 22, 22] total 45 [2025-02-08 06:14:22,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493806143] [2025-02-08 06:14:22,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:22,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-08 06:14:22,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:22,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-08 06:14:22,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1848, Unknown=0, NotChecked=0, Total=1980 [2025-02-08 06:14:22,796 INFO L87 Difference]: Start difference. First operand 103 states and 105 transitions. Second operand has 45 states, 45 states have (on average 2.933333333333333) internal successors, (132), 45 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 06:14:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:23,455 INFO L93 Difference]: Finished difference Result 161 states and 163 transitions. [2025-02-08 06:14:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-08 06:14:23,455 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.933333333333333) internal successors, (132), 45 states have internal predecessors, (132), 0 states have call successors, (0), 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 95 [2025-02-08 06:14:23,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:23,456 INFO L225 Difference]: With dead ends: 161 [2025-02-08 06:14:23,456 INFO L226 Difference]: Without dead ends: 110 [2025-02-08 06:14:23,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=2768, Unknown=0, NotChecked=0, Total=2970 [2025-02-08 06:14:23,457 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 1814 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:23,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1128 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1814 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 06:14:23,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2025-02-08 06:14:23,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 106. [2025-02-08 06:14:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 104 states have (on average 1.0384615384615385) internal successors, (108), 105 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 06:14:23,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2025-02-08 06:14:23,458 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 95 [2025-02-08 06:14:23,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:23,458 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2025-02-08 06:14:23,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.933333333333333) internal successors, (132), 45 states have internal predecessors, (132), 0 states have call successors, (0), 0 states 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 06:14:23,458 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2025-02-08 06:14:23,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2025-02-08 06:14:23,460 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:23,461 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:23,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-08 06:14:23,661 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,SelfDestructingSolverStorable46 [2025-02-08 06:14:23,661 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:23,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:23,662 INFO L85 PathProgramCache]: Analyzing trace with hash -56254476, now seen corresponding path program 8 times [2025-02-08 06:14:23,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:23,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662730194] [2025-02-08 06:14:23,662 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:14:23,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:23,673 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 98 statements into 2 equivalence classes. [2025-02-08 06:14:23,685 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 98 of 98 statements. [2025-02-08 06:14:23,685 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:14:23,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:24,307 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 22 proven. 173 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:14:24,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:24,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662730194] [2025-02-08 06:14:24,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662730194] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:24,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030565674] [2025-02-08 06:14:24,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:14:24,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:24,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:24,310 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 06:14:24,311 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 06:14:24,409 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 98 statements into 2 equivalence classes. [2025-02-08 06:14:24,451 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 98 of 98 statements. [2025-02-08 06:14:24,452 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:14:24,452 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:24,458 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 69 conjuncts are in the unsatisfiable core [2025-02-08 06:14:24,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:24,737 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 35 proven. 160 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:14:24,737 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:25,061 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 06:14:25,161 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 35 proven. 160 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:14:25,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030565674] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:25,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:25,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 39 [2025-02-08 06:14:25,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334343597] [2025-02-08 06:14:25,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:25,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-08 06:14:25,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:25,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-08 06:14:25,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1383, Unknown=0, NotChecked=0, Total=1560 [2025-02-08 06:14:25,163 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand has 40 states, 39 states have (on average 4.358974358974359) internal successors, (170), 40 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 06:14:25,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:25,602 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2025-02-08 06:14:25,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 06:14:25,603 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.358974358974359) internal successors, (170), 40 states have internal predecessors, (170), 0 states have call successors, (0), 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 98 [2025-02-08 06:14:25,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:25,603 INFO L225 Difference]: With dead ends: 108 [2025-02-08 06:14:25,603 INFO L226 Difference]: Without dead ends: 108 [2025-02-08 06:14:25,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 168 SyntacticMatches, 7 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=241, Invalid=1921, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 06:14:25,604 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 941 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:25,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 521 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 941 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-08 06:14:25,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-02-08 06:14:25,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2025-02-08 06:14:25,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 106 states have (on average 1.0377358490566038) internal successors, (110), 107 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:25,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 110 transitions. [2025-02-08 06:14:25,605 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 110 transitions. Word has length 98 [2025-02-08 06:14:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:25,605 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 110 transitions. [2025-02-08 06:14:25,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.358974358974359) internal successors, (170), 40 states have internal predecessors, (170), 0 states have call successors, (0), 0 states 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 06:14:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 110 transitions. [2025-02-08 06:14:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2025-02-08 06:14:25,606 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:25,606 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:25,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-08 06:14:25,810 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,SelfDestructingSolverStorable47 [2025-02-08 06:14:25,810 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:25,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:25,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1515456477, now seen corresponding path program 11 times [2025-02-08 06:14:25,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:25,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54186000] [2025-02-08 06:14:25,810 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:25,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:25,825 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 104 statements into 8 equivalence classes. [2025-02-08 06:14:25,863 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 104 of 104 statements. [2025-02-08 06:14:25,863 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-02-08 06:14:25,863 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 20 proven. 213 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:14:26,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:26,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54186000] [2025-02-08 06:14:26,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54186000] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:26,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223545480] [2025-02-08 06:14:26,940 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:14:26,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:26,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:26,943 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 06:14:26,944 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 06:14:27,043 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 104 statements into 8 equivalence classes. [2025-02-08 06:14:27,166 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 104 of 104 statements. [2025-02-08 06:14:27,166 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-02-08 06:14:27,166 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:27,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 93 conjuncts are in the unsatisfiable core [2025-02-08 06:14:27,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:27,482 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 06:14:27,907 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 7 treesize of output 3 [2025-02-08 06:14:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 20 proven. 213 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:14:27,952 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:27,995 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 8 treesize of output 4 [2025-02-08 06:14:28,327 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 06:14:28,328 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 06:14:28,711 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 20 proven. 213 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:14:28,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223545480] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:28,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:28,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 22, 22] total 66 [2025-02-08 06:14:28,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654881666] [2025-02-08 06:14:28,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:28,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2025-02-08 06:14:28,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:28,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2025-02-08 06:14:28,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=4114, Unknown=0, NotChecked=0, Total=4290 [2025-02-08 06:14:28,714 INFO L87 Difference]: Start difference. First operand 108 states and 110 transitions. Second operand has 66 states, 66 states have (on average 3.8181818181818183) internal successors, (252), 66 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 06:14:30,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:30,496 INFO L93 Difference]: Finished difference Result 191 states and 194 transitions. [2025-02-08 06:14:30,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 06:14:30,496 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 3.8181818181818183) internal successors, (252), 66 states have internal predecessors, (252), 0 states have call successors, (0), 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 104 [2025-02-08 06:14:30,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:30,497 INFO L225 Difference]: With dead ends: 191 [2025-02-08 06:14:30,497 INFO L226 Difference]: Without dead ends: 113 [2025-02-08 06:14:30,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=357, Invalid=8955, Unknown=0, NotChecked=0, Total=9312 [2025-02-08 06:14:30,498 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 2330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:30,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1369 Invalid, 2330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2323 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-08 06:14:30,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2025-02-08 06:14:30,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 111. [2025-02-08 06:14:30,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 109 states have (on average 1.036697247706422) internal successors, (113), 110 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:30,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 113 transitions. [2025-02-08 06:14:30,500 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 113 transitions. Word has length 104 [2025-02-08 06:14:30,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:30,500 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 113 transitions. [2025-02-08 06:14:30,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 3.8181818181818183) internal successors, (252), 66 states have internal predecessors, (252), 0 states have call successors, (0), 0 states 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 06:14:30,500 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 113 transitions. [2025-02-08 06:14:30,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-08 06:14:30,501 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:30,501 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:30,509 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 06:14:30,706 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,SelfDestructingSolverStorable48 [2025-02-08 06:14:30,706 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:30,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:30,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1422244967, now seen corresponding path program 12 times [2025-02-08 06:14:30,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:30,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369258692] [2025-02-08 06:14:30,707 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:14:30,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:30,721 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 107 statements into 8 equivalence classes. [2025-02-08 06:14:30,746 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 107 of 107 statements. [2025-02-08 06:14:30,746 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-02-08 06:14:30,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 35 proven. 217 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:14:31,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:31,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369258692] [2025-02-08 06:14:31,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369258692] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917914353] [2025-02-08 06:14:31,411 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:14:31,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:31,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:31,413 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 06:14:31,414 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 06:14:31,589 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 107 statements into 8 equivalence classes. [2025-02-08 06:14:31,845 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 107 of 107 statements. [2025-02-08 06:14:31,845 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-02-08 06:14:31,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:31,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 559 conjuncts, 61 conjuncts are in the unsatisfiable core [2025-02-08 06:14:31,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:31,854 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 06:14:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 51 proven. 201 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:14:32,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 51 proven. 201 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2025-02-08 06:14:32,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917914353] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:32,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:32,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19, 19] total 52 [2025-02-08 06:14:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378245821] [2025-02-08 06:14:32,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:32,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-02-08 06:14:32,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:32,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-02-08 06:14:32,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=2380, Unknown=0, NotChecked=0, Total=2756 [2025-02-08 06:14:32,871 INFO L87 Difference]: Start difference. First operand 111 states and 113 transitions. Second operand has 53 states, 52 states have (on average 4.4423076923076925) internal successors, (231), 53 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:33,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:33,296 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2025-02-08 06:14:33,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-08 06:14:33,296 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 4.4423076923076925) internal successors, (231), 53 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2025-02-08 06:14:33,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:33,297 INFO L225 Difference]: With dead ends: 121 [2025-02-08 06:14:33,297 INFO L226 Difference]: Without dead ends: 121 [2025-02-08 06:14:33,297 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1465 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=614, Invalid=3676, Unknown=0, NotChecked=0, Total=4290 [2025-02-08 06:14:33,298 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 47 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:33,298 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 207 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:14:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2025-02-08 06:14:33,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2025-02-08 06:14:33,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.0347826086956522) internal successors, (119), 116 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 06:14:33,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 119 transitions. [2025-02-08 06:14:33,302 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 119 transitions. Word has length 107 [2025-02-08 06:14:33,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:33,302 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 119 transitions. [2025-02-08 06:14:33,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 4.4423076923076925) internal successors, (231), 53 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:33,302 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 119 transitions. [2025-02-08 06:14:33,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2025-02-08 06:14:33,303 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:33,303 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:33,314 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 06:14:33,507 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,SelfDestructingSolverStorable49 [2025-02-08 06:14:33,507 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:33,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:33,508 INFO L85 PathProgramCache]: Analyzing trace with hash -977814122, now seen corresponding path program 9 times [2025-02-08 06:14:33,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:33,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433006720] [2025-02-08 06:14:33,508 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:33,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:33,520 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 109 statements into 8 equivalence classes. [2025-02-08 06:14:33,556 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 109 of 109 statements. [2025-02-08 06:14:33,556 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-08 06:14:33,556 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 22 proven. 225 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-08 06:14:34,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:34,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433006720] [2025-02-08 06:14:34,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433006720] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:34,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42807186] [2025-02-08 06:14:34,881 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:34,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:34,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:34,884 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 06:14:34,884 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 06:14:34,999 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 109 statements into 8 equivalence classes. [2025-02-08 06:14:35,203 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 109 of 109 statements. [2025-02-08 06:14:35,204 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-08 06:14:35,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:35,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 174 conjuncts are in the unsatisfiable core [2025-02-08 06:14:35,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:35,752 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 8 treesize of output 1 [2025-02-08 06:14:35,755 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 06:14:36,609 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 34 proven. 282 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:14:36,609 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:37,746 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 22 treesize of output 20 [2025-02-08 06:14:37,749 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 34 treesize of output 30 [2025-02-08 06:14:37,805 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 7 treesize of output 3 [2025-02-08 06:14:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 317 backedges. 34 proven. 213 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-08 06:14:38,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42807186] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:38,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:38,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 37, 31] total 100 [2025-02-08 06:14:38,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006887795] [2025-02-08 06:14:38,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:38,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2025-02-08 06:14:38,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:38,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2025-02-08 06:14:38,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=9505, Unknown=0, NotChecked=0, Total=9900 [2025-02-08 06:14:38,193 INFO L87 Difference]: Start difference. First operand 117 states and 119 transitions. Second operand has 100 states, 100 states have (on average 2.79) internal successors, (279), 100 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 06:14:43,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:43,435 INFO L93 Difference]: Finished difference Result 183 states and 185 transitions. [2025-02-08 06:14:43,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2025-02-08 06:14:43,437 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.79) internal successors, (279), 100 states have internal predecessors, (279), 0 states have call successors, (0), 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 109 [2025-02-08 06:14:43,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:43,438 INFO L225 Difference]: With dead ends: 183 [2025-02-08 06:14:43,438 INFO L226 Difference]: Without dead ends: 124 [2025-02-08 06:14:43,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6985 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1619, Invalid=29181, Unknown=0, NotChecked=0, Total=30800 [2025-02-08 06:14:43,443 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 78 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 4540 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 4604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 4540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:43,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1408 Invalid, 4604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 4540 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2025-02-08 06:14:43,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2025-02-08 06:14:43,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2025-02-08 06:14:43,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 120 states have (on average 1.0333333333333334) internal successors, (124), 121 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 06:14:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 124 transitions. [2025-02-08 06:14:43,445 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 124 transitions. Word has length 109 [2025-02-08 06:14:43,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:43,445 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 124 transitions. [2025-02-08 06:14:43,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 2.79) internal successors, (279), 100 states have internal predecessors, (279), 0 states have call successors, (0), 0 states 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 06:14:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 124 transitions. [2025-02-08 06:14:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-02-08 06:14:43,446 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:43,446 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:43,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-08 06:14:43,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:43,650 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:43,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:43,651 INFO L85 PathProgramCache]: Analyzing trace with hash -2031826239, now seen corresponding path program 13 times [2025-02-08 06:14:43,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:43,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824851338] [2025-02-08 06:14:43,651 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:14:43,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:43,661 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-02-08 06:14:43,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-02-08 06:14:43,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:43,681 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 23 proven. 287 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-08 06:14:44,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:44,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824851338] [2025-02-08 06:14:44,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824851338] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:44,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171646691] [2025-02-08 06:14:44,466 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-08 06:14:44,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:44,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:44,469 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 06:14:44,469 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 06:14:44,574 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 118 statements into 1 equivalence classes. [2025-02-08 06:14:44,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 118 of 118 statements. [2025-02-08 06:14:44,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:14:44,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:44,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 162 conjuncts are in the unsatisfiable core [2025-02-08 06:14:44,632 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:44,806 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 06:14:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 23 proven. 287 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-08 06:14:45,168 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:45,276 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 20 treesize of output 12 [2025-02-08 06:14:45,330 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 06:14:45,331 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 06:14:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 23 proven. 287 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2025-02-08 06:14:45,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171646691] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:45,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:45,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26, 26] total 51 [2025-02-08 06:14:45,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455899293] [2025-02-08 06:14:45,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:45,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-08 06:14:45,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:45,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-08 06:14:45,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=2434, Unknown=0, NotChecked=0, Total=2550 [2025-02-08 06:14:45,419 INFO L87 Difference]: Start difference. First operand 122 states and 124 transitions. Second operand has 51 states, 51 states have (on average 3.9215686274509802) internal successors, (200), 51 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 06:14:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:47,391 INFO L93 Difference]: Finished difference Result 356 states and 361 transitions. [2025-02-08 06:14:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2025-02-08 06:14:47,391 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 3.9215686274509802) internal successors, (200), 51 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2025-02-08 06:14:47,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:47,394 INFO L225 Difference]: With dead ends: 356 [2025-02-08 06:14:47,394 INFO L226 Difference]: Without dead ends: 132 [2025-02-08 06:14:47,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=351, Invalid=8769, Unknown=0, NotChecked=0, Total=9120 [2025-02-08 06:14:47,395 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 26 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 3906 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 3920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 3906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:47,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1182 Invalid, 3920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 3906 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 06:14:47,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-02-08 06:14:47,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2025-02-08 06:14:47,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 126 states have (on average 1.0317460317460319) internal successors, (130), 127 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 130 transitions. [2025-02-08 06:14:47,397 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 130 transitions. Word has length 118 [2025-02-08 06:14:47,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:47,397 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 130 transitions. [2025-02-08 06:14:47,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 3.9215686274509802) internal successors, (200), 51 states have internal predecessors, (200), 0 states have call successors, (0), 0 states 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 06:14:47,397 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 130 transitions. [2025-02-08 06:14:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2025-02-08 06:14:47,402 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:47,402 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:47,417 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 06:14:47,602 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,SelfDestructingSolverStorable51 [2025-02-08 06:14:47,602 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:47,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:47,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1200457859, now seen corresponding path program 14 times [2025-02-08 06:14:47,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:47,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101886207] [2025-02-08 06:14:47,603 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:14:47,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:47,613 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 124 statements into 2 equivalence classes. [2025-02-08 06:14:47,631 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 124 of 124 statements. [2025-02-08 06:14:47,634 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:14:47,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 51 proven. 281 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-08 06:14:48,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:48,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101886207] [2025-02-08 06:14:48,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101886207] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:48,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290793313] [2025-02-08 06:14:48,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:14:48,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:48,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:48,275 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 06:14:48,276 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 06:14:48,397 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 124 statements into 2 equivalence classes. [2025-02-08 06:14:48,465 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 124 of 124 statements. [2025-02-08 06:14:48,465 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:14:48,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:48,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 83 conjuncts are in the unsatisfiable core [2025-02-08 06:14:48,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 70 proven. 262 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-08 06:14:48,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:49,209 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 06:14:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 70 proven. 262 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-08 06:14:49,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290793313] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:49,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:49,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 44 [2025-02-08 06:14:49,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906265177] [2025-02-08 06:14:49,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:49,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2025-02-08 06:14:49,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:49,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2025-02-08 06:14:49,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1743, Unknown=0, NotChecked=0, Total=1980 [2025-02-08 06:14:49,368 INFO L87 Difference]: Start difference. First operand 128 states and 130 transitions. Second operand has 45 states, 44 states have (on average 4.840909090909091) internal successors, (213), 45 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 06:14:49,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:49,940 INFO L93 Difference]: Finished difference Result 138 states and 140 transitions. [2025-02-08 06:14:49,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-08 06:14:49,940 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 4.840909090909091) internal successors, (213), 45 states have internal predecessors, (213), 0 states have call successors, (0), 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 124 [2025-02-08 06:14:49,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:49,941 INFO L225 Difference]: With dead ends: 138 [2025-02-08 06:14:49,941 INFO L226 Difference]: Without dead ends: 138 [2025-02-08 06:14:49,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 215 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=270, Invalid=1892, Unknown=0, NotChecked=0, Total=2162 [2025-02-08 06:14:49,942 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:49,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 904 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 06:14:49,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-02-08 06:14:49,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 134. [2025-02-08 06:14:49,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.0303030303030303) internal successors, (136), 133 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:49,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 136 transitions. [2025-02-08 06:14:49,944 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 136 transitions. Word has length 124 [2025-02-08 06:14:49,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:49,945 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 136 transitions. [2025-02-08 06:14:49,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 4.840909090909091) internal successors, (213), 45 states have internal predecessors, (213), 0 states have call successors, (0), 0 states 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 06:14:49,945 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 136 transitions. [2025-02-08 06:14:49,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2025-02-08 06:14:49,945 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:49,946 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:49,956 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 06:14:50,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:50,146 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:50,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:50,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1706201088, now seen corresponding path program 10 times [2025-02-08 06:14:50,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:50,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090468584] [2025-02-08 06:14:50,147 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:50,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:50,157 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 126 statements into 2 equivalence classes. [2025-02-08 06:14:50,171 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 126 of 126 statements. [2025-02-08 06:14:50,171 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:50,171 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:50,734 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 70 proven. 278 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-08 06:14:50,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:50,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090468584] [2025-02-08 06:14:50,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090468584] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:50,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774384208] [2025-02-08 06:14:50,735 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:14:50,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:50,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:50,737 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 06:14:50,746 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 06:14:50,857 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 126 statements into 2 equivalence classes. [2025-02-08 06:14:51,182 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 126 of 126 statements. [2025-02-08 06:14:51,183 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:14:51,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:51,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 92 conjuncts are in the unsatisfiable core [2025-02-08 06:14:51,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:51,192 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 06:14:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 70 proven. 278 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-08 06:14:51,573 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 70 proven. 278 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-08 06:14:52,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774384208] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:52,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:52,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 56 [2025-02-08 06:14:52,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744252811] [2025-02-08 06:14:52,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:52,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-02-08 06:14:52,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:52,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-02-08 06:14:52,312 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=2824, Unknown=0, NotChecked=0, Total=3192 [2025-02-08 06:14:52,312 INFO L87 Difference]: Start difference. First operand 134 states and 136 transitions. Second operand has 57 states, 56 states have (on average 4.410714285714286) internal successors, (247), 57 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 06:14:53,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:14:53,082 INFO L93 Difference]: Finished difference Result 136 states and 138 transitions. [2025-02-08 06:14:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-08 06:14:53,082 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 4.410714285714286) internal successors, (247), 57 states have internal predecessors, (247), 0 states have call successors, (0), 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 126 [2025-02-08 06:14:53,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:14:53,083 INFO L225 Difference]: With dead ends: 136 [2025-02-08 06:14:53,083 INFO L226 Difference]: Without dead ends: 136 [2025-02-08 06:14:53,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1013 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=469, Invalid=3821, Unknown=0, NotChecked=0, Total=4290 [2025-02-08 06:14:53,084 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 4 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 1643 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 1643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-08 06:14:53,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1031 Invalid, 1643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1643 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-08 06:14:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-02-08 06:14:53,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2025-02-08 06:14:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 134 states have (on average 1.0298507462686568) internal successors, (138), 135 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:14:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 138 transitions. [2025-02-08 06:14:53,085 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 138 transitions. Word has length 126 [2025-02-08 06:14:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:14:53,085 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 138 transitions. [2025-02-08 06:14:53,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 4.410714285714286) internal successors, (247), 57 states have internal predecessors, (247), 0 states have call successors, (0), 0 states 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 06:14:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 138 transitions. [2025-02-08 06:14:53,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2025-02-08 06:14:53,087 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:14:53,087 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:14:53,099 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 06:14:53,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:53,292 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:14:53,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:14:53,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1772789481, now seen corresponding path program 15 times [2025-02-08 06:14:53,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:14:53,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476143361] [2025-02-08 06:14:53,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:53,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:14:53,303 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 132 statements into 10 equivalence classes. [2025-02-08 06:14:53,358 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 132 of 132 statements. [2025-02-08 06:14:53,358 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-02-08 06:14:53,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 26 proven. 372 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-08 06:14:54,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:14:54,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476143361] [2025-02-08 06:14:54,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476143361] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:14:54,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971068173] [2025-02-08 06:14:54,134 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:14:54,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:14:54,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:14:54,136 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 06:14:54,137 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 06:14:54,256 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 132 statements into 10 equivalence classes. [2025-02-08 06:14:54,581 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) and asserted 132 of 132 statements. [2025-02-08 06:14:54,581 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2025-02-08 06:14:54,581 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:14:54,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 214 conjuncts are in the unsatisfiable core [2025-02-08 06:14:54,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:14:55,358 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 06:14:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 26 proven. 464 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:14:56,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:14:56,624 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 20 treesize of output 12 [2025-02-08 06:14:57,178 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 06:14:57,179 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 06:14:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 26 proven. 372 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-08 06:14:57,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971068173] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:14:57,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:14:57,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 46, 28] total 95 [2025-02-08 06:14:57,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037062979] [2025-02-08 06:14:57,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:14:57,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2025-02-08 06:14:57,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:14:57,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2025-02-08 06:14:57,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=8679, Unknown=0, NotChecked=0, Total=8930 [2025-02-08 06:14:57,777 INFO L87 Difference]: Start difference. First operand 136 states and 138 transitions. Second operand has 95 states, 95 states have (on average 3.568421052631579) internal successors, (339), 95 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 06:15:01,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:01,371 INFO L93 Difference]: Finished difference Result 396 states and 401 transitions. [2025-02-08 06:15:01,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2025-02-08 06:15:01,376 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 3.568421052631579) internal successors, (339), 95 states have internal predecessors, (339), 0 states have call successors, (0), 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 132 [2025-02-08 06:15:01,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:01,377 INFO L225 Difference]: With dead ends: 396 [2025-02-08 06:15:01,377 INFO L226 Difference]: Without dead ends: 144 [2025-02-08 06:15:01,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3447 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=569, Invalid=21187, Unknown=0, NotChecked=0, Total=21756 [2025-02-08 06:15:01,378 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 26 mSDsluCounter, 1966 mSDsCounter, 0 mSdLazyCounter, 6660 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 6676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 6660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:01,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 1998 Invalid, 6676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 6660 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2025-02-08 06:15:01,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-02-08 06:15:01,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2025-02-08 06:15:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 140 states have (on average 1.0285714285714285) internal successors, (144), 141 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 06:15:01,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2025-02-08 06:15:01,384 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 132 [2025-02-08 06:15:01,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:01,384 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2025-02-08 06:15:01,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 3.568421052631579) internal successors, (339), 95 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 06:15:01,384 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2025-02-08 06:15:01,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2025-02-08 06:15:01,385 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:01,385 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:01,395 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 06:15:01,586 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,SelfDestructingSolverStorable54 [2025-02-08 06:15:01,587 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:01,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:01,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1868615449, now seen corresponding path program 16 times [2025-02-08 06:15:01,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:01,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348142354] [2025-02-08 06:15:01,587 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:15:01,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:01,605 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 138 statements into 2 equivalence classes. [2025-02-08 06:15:01,632 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 138 of 138 statements. [2025-02-08 06:15:01,635 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:15:01,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 94 proven. 329 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-08 06:15:02,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:02,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348142354] [2025-02-08 06:15:02,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348142354] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:02,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667859983] [2025-02-08 06:15:02,267 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:15:02,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:02,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:02,274 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 06:15:02,275 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 06:15:02,398 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 138 statements into 2 equivalence classes. [2025-02-08 06:15:02,609 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 138 of 138 statements. [2025-02-08 06:15:02,609 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-08 06:15:02,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:02,616 INFO L256 TraceCheckSpWp]: Trace formula consists of 710 conjuncts, 94 conjuncts are in the unsatisfiable core [2025-02-08 06:15:02,619 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:03,019 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 92 proven. 331 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-08 06:15:03,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:03,404 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 06:15:03,778 INFO L134 CoverageAnalysis]: Checked inductivity of 540 backedges. 92 proven. 331 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-08 06:15:03,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667859983] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:03,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:03,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22, 22] total 57 [2025-02-08 06:15:03,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468562189] [2025-02-08 06:15:03,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:03,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2025-02-08 06:15:03,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:03,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2025-02-08 06:15:03,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2867, Unknown=0, NotChecked=0, Total=3306 [2025-02-08 06:15:03,780 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand has 58 states, 57 states have (on average 4.701754385964913) internal successors, (268), 58 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 06:15:04,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:04,335 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions. [2025-02-08 06:15:04,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-08 06:15:04,336 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 4.701754385964913) internal successors, (268), 58 states have internal predecessors, (268), 0 states have call successors, (0), 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 138 [2025-02-08 06:15:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:04,336 INFO L225 Difference]: With dead ends: 152 [2025-02-08 06:15:04,336 INFO L226 Difference]: Without dead ends: 152 [2025-02-08 06:15:04,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1255 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=485, Invalid=3055, Unknown=0, NotChecked=0, Total=3540 [2025-02-08 06:15:04,337 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 16 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 953 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:04,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 953 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-08 06:15:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-02-08 06:15:04,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2025-02-08 06:15:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.0273972602739727) internal successors, (150), 147 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 06:15:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 150 transitions. [2025-02-08 06:15:04,339 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 150 transitions. Word has length 138 [2025-02-08 06:15:04,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:04,339 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 150 transitions. [2025-02-08 06:15:04,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 4.701754385964913) internal successors, (268), 58 states have internal predecessors, (268), 0 states have call successors, (0), 0 states 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 06:15:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 150 transitions. [2025-02-08 06:15:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2025-02-08 06:15:04,339 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:04,339 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:04,348 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 06:15:04,544 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,SelfDestructingSolverStorable55 [2025-02-08 06:15:04,544 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:04,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash -443117724, now seen corresponding path program 11 times [2025-02-08 06:15:04,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:04,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754506296] [2025-02-08 06:15:04,544 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:15:04,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:04,556 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 140 statements into 10 equivalence classes. [2025-02-08 06:15:04,588 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 140 of 140 statements. [2025-02-08 06:15:04,588 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-02-08 06:15:04,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 92 proven. 349 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-08 06:15:05,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:05,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754506296] [2025-02-08 06:15:05,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754506296] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:05,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422187824] [2025-02-08 06:15:05,156 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:15:05,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:05,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:05,158 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 06:15:05,160 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 06:15:05,280 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 140 statements into 10 equivalence classes. [2025-02-08 06:15:05,590 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) and asserted 140 of 140 statements. [2025-02-08 06:15:05,590 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2025-02-08 06:15:05,590 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:05,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 724 conjuncts, 101 conjuncts are in the unsatisfiable core [2025-02-08 06:15:05,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:05,605 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 06:15:06,030 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 92 proven. 349 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-08 06:15:06,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:06,931 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 92 proven. 349 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-08 06:15:06,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422187824] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:06,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:06,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 61 [2025-02-08 06:15:06,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294958210] [2025-02-08 06:15:06,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:06,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2025-02-08 06:15:06,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:06,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2025-02-08 06:15:06,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=434, Invalid=3348, Unknown=0, NotChecked=0, Total=3782 [2025-02-08 06:15:06,933 INFO L87 Difference]: Start difference. First operand 148 states and 150 transitions. Second operand has 62 states, 61 states have (on average 4.459016393442623) internal successors, (272), 62 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 06:15:07,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:07,826 INFO L93 Difference]: Finished difference Result 150 states and 152 transitions. [2025-02-08 06:15:07,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-08 06:15:07,827 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 4.459016393442623) internal successors, (272), 62 states have internal predecessors, (272), 0 states have call successors, (0), 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 140 [2025-02-08 06:15:07,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:07,830 INFO L225 Difference]: With dead ends: 150 [2025-02-08 06:15:07,830 INFO L226 Difference]: Without dead ends: 150 [2025-02-08 06:15:07,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1226 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=551, Invalid=4561, Unknown=0, NotChecked=0, Total=5112 [2025-02-08 06:15:07,831 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 2 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:07,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1168 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1861 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-08 06:15:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2025-02-08 06:15:07,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2025-02-08 06:15:07,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 148 states have (on average 1.027027027027027) internal successors, (152), 149 states have internal predecessors, (152), 0 states have call successors, (0), 0 states 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 06:15:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2025-02-08 06:15:07,833 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 140 [2025-02-08 06:15:07,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:07,833 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2025-02-08 06:15:07,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 4.459016393442623) internal successors, (272), 62 states have internal predecessors, (272), 0 states have call successors, (0), 0 states 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 06:15:07,833 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2025-02-08 06:15:07,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-02-08 06:15:07,833 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:07,833 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:07,843 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 06:15:08,039 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,SelfDestructingSolverStorable56 [2025-02-08 06:15:08,039 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:08,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:08,039 INFO L85 PathProgramCache]: Analyzing trace with hash -447765683, now seen corresponding path program 17 times [2025-02-08 06:15:08,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:08,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754099746] [2025-02-08 06:15:08,040 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:15:08,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:08,050 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 146 statements into 11 equivalence classes. [2025-02-08 06:15:08,143 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 146 of 146 statements. [2025-02-08 06:15:08,145 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-08 06:15:08,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 29 proven. 468 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-08 06:15:09,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:09,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754099746] [2025-02-08 06:15:09,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754099746] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:09,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924283733] [2025-02-08 06:15:09,036 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:15:09,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:09,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:09,038 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 06:15:09,040 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 06:15:09,183 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 146 statements into 11 equivalence classes. [2025-02-08 06:15:09,586 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) and asserted 146 of 146 statements. [2025-02-08 06:15:09,587 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2025-02-08 06:15:09,587 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:09,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 136 conjuncts are in the unsatisfiable core [2025-02-08 06:15:09,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:10,315 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 06:15:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 29 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:15:10,742 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:10,859 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 06:15:10,860 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 06:15:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 29 proven. 468 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-08 06:15:11,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924283733] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:11,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:11,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 36, 27] total 75 [2025-02-08 06:15:11,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561010946] [2025-02-08 06:15:11,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:11,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2025-02-08 06:15:11,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:11,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2025-02-08 06:15:11,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=5307, Unknown=0, NotChecked=0, Total=5550 [2025-02-08 06:15:11,219 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand has 75 states, 75 states have (on average 4.053333333333334) internal successors, (304), 75 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 06:15:12,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:12,472 INFO L93 Difference]: Finished difference Result 268 states and 271 transitions. [2025-02-08 06:15:12,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2025-02-08 06:15:12,473 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 4.053333333333334) internal successors, (304), 75 states have internal predecessors, (304), 0 states have call successors, (0), 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 146 [2025-02-08 06:15:12,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:12,473 INFO L225 Difference]: With dead ends: 268 [2025-02-08 06:15:12,473 INFO L226 Difference]: Without dead ends: 155 [2025-02-08 06:15:12,474 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=296, Invalid=6676, Unknown=0, NotChecked=0, Total=6972 [2025-02-08 06:15:12,474 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 18 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 4491 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 4500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 4491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:12,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2680 Invalid, 4500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 4491 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-08 06:15:12,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-02-08 06:15:12,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2025-02-08 06:15:12,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 152 states have internal predecessors, (155), 0 states have call successors, (0), 0 states 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 06:15:12,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2025-02-08 06:15:12,476 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 146 [2025-02-08 06:15:12,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:12,476 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2025-02-08 06:15:12,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 4.053333333333334) internal successors, (304), 75 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 06:15:12,476 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2025-02-08 06:15:12,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-02-08 06:15:12,479 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:12,483 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:12,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2025-02-08 06:15:12,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,34 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:12,684 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:12,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:12,685 INFO L85 PathProgramCache]: Analyzing trace with hash 659125257, now seen corresponding path program 18 times [2025-02-08 06:15:12,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:12,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706980032] [2025-02-08 06:15:12,686 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:15:12,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:12,703 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 149 statements into 11 equivalence classes. [2025-02-08 06:15:12,771 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 149 of 149 statements. [2025-02-08 06:15:12,771 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-08 06:15:12,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 92 proven. 433 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-08 06:15:13,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706980032] [2025-02-08 06:15:13,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706980032] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330566086] [2025-02-08 06:15:13,589 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:15:13,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:13,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:13,591 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 06:15:13,593 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 06:15:13,740 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 149 statements into 11 equivalence classes. [2025-02-08 06:15:15,253 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 149 of 149 statements. [2025-02-08 06:15:15,253 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-08 06:15:15,254 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:15,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 83 conjuncts are in the unsatisfiable core [2025-02-08 06:15:15,266 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:15:15,551 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 117 proven. 408 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-08 06:15:15,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:15:15,985 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 7 treesize of output 5 [2025-02-08 06:15:16,159 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 117 proven. 408 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-02-08 06:15:16,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330566086] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:15:16,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:15:16,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 25] total 54 [2025-02-08 06:15:16,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97790419] [2025-02-08 06:15:16,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:15:16,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-02-08 06:15:16,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:15:16,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-02-08 06:15:16,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=2529, Unknown=0, NotChecked=0, Total=2970 [2025-02-08 06:15:16,161 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand has 55 states, 54 states have (on average 4.851851851851852) internal successors, (262), 55 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 06:15:16,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:15:16,610 INFO L93 Difference]: Finished difference Result 163 states and 165 transitions. [2025-02-08 06:15:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2025-02-08 06:15:16,610 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 4.851851851851852) internal successors, (262), 55 states have internal predecessors, (262), 0 states have call successors, (0), 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 149 [2025-02-08 06:15:16,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:15:16,611 INFO L225 Difference]: With dead ends: 163 [2025-02-08 06:15:16,611 INFO L226 Difference]: Without dead ends: 163 [2025-02-08 06:15:16,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 259 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2391 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=898, Invalid=4652, Unknown=0, NotChecked=0, Total=5550 [2025-02-08 06:15:16,612 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 36 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:15:16,612 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 183 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:15:16,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2025-02-08 06:15:16,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 159. [2025-02-08 06:15:16,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.0254777070063694) internal successors, (161), 158 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 06:15:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 161 transitions. [2025-02-08 06:15:16,614 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 161 transitions. Word has length 149 [2025-02-08 06:15:16,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:15:16,614 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 161 transitions. [2025-02-08 06:15:16,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 4.851851851851852) internal successors, (262), 55 states have internal predecessors, (262), 0 states have call successors, (0), 0 states 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 06:15:16,614 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 161 transitions. [2025-02-08 06:15:16,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2025-02-08 06:15:16,615 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:15:16,615 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:15:16,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2025-02-08 06:15:16,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2025-02-08 06:15:16,820 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 16 more)] === [2025-02-08 06:15:16,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:15:16,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2059178502, now seen corresponding path program 12 times [2025-02-08 06:15:16,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:15:16,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535127200] [2025-02-08 06:15:16,820 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:15:16,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:15:16,836 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 151 statements into 11 equivalence classes. [2025-02-08 06:15:16,911 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 151 of 151 statements. [2025-02-08 06:15:16,912 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-08 06:15:16,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:15:17,689 INFO L134 CoverageAnalysis]: Checked inductivity of 662 backedges. 9 proven. 85 refuted. 0 times theorem prover too weak. 568 trivial. 0 not checked. [2025-02-08 06:15:17,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:15:17,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535127200] [2025-02-08 06:15:17,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535127200] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:15:17,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972415881] [2025-02-08 06:15:17,689 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:15:17,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:15:17,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:15:17,693 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 06:15:17,694 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 06:15:17,827 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 151 statements into 11 equivalence classes.