./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-broom/dll-middle-shared.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-broom/dll-middle-shared.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash d8b0e8aa94f77bf1afa5295afab3fc9fce32b5bdbad38c3bd4a8f1e24260f6fc --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:28:17,161 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:28:17,230 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2025-02-06 10:28:17,235 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:28:17,235 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:28:17,255 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:28:17,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:28:17,256 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:28:17,257 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:28:17,257 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:28:17,257 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:28:17,257 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:28:17,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:28:17,258 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:28:17,258 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:28:17,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:28:17,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:28:17,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:28:17,258 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:28:17,258 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:28:17,258 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:28:17,259 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:28:17,259 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:28:17,259 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:28:17,260 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:28:17,260 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:28:17,260 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:28:17,260 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8b0e8aa94f77bf1afa5295afab3fc9fce32b5bdbad38c3bd4a8f1e24260f6fc [2025-02-06 10:28:17,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:28:17,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:28:17,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:28:17,547 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:28:17,547 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:28:17,549 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-broom/dll-middle-shared.i [2025-02-06 10:28:18,940 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6d96909e1/a620ce39ed7d4454b128fa7dce12b4db/FLAG88f9f78fc [2025-02-06 10:28:19,265 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:28:19,266 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety-broom/dll-middle-shared.i [2025-02-06 10:28:19,286 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6d96909e1/a620ce39ed7d4454b128fa7dce12b4db/FLAG88f9f78fc [2025-02-06 10:28:19,526 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/6d96909e1/a620ce39ed7d4454b128fa7dce12b4db [2025-02-06 10:28:19,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:28:19,530 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:28:19,531 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:28:19,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:28:19,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:28:19,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed07a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19, skipping insertion in model container [2025-02-06 10:28:19,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,577 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:28:19,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:28:19,826 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:28:19,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:28:19,893 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:28:19,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19 WrapperNode [2025-02-06 10:28:19,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:28:19,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:28:19,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:28:19,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:28:19,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,914 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,936 INFO L138 Inliner]: procedures = 121, calls = 34, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 92 [2025-02-06 10:28:19,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:28:19,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:28:19,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:28:19,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:28:19,943 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,943 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,946 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,962 INFO L175 MemorySlicer]: Split 20 memory accesses to 1 slices as follows [20]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 10 writes are split as follows [10]. [2025-02-06 10:28:19,962 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,962 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,970 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,971 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,974 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:28:19,975 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:28:19,975 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:28:19,975 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:28:19,976 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (1/1) ... [2025-02-06 10:28:19,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:28:19,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:20,011 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 10:28:20,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 10:28:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 10:28:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2025-02-06 10:28:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2025-02-06 10:28:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 10:28:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 10:28:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 10:28:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:28:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:28:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:28:20,150 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:28:20,152 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:28:20,500 INFO L? ?]: Removed 118 outVars from TransFormulas that were not future-live. [2025-02-06 10:28:20,501 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:28:20,513 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:28:20,515 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:28:20,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:28:20 BoogieIcfgContainer [2025-02-06 10:28:20,516 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:28:20,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:28:20,519 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:28:20,523 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:28:20,523 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:28:19" (1/3) ... [2025-02-06 10:28:20,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3444bc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:28:20, skipping insertion in model container [2025-02-06 10:28:20,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:28:19" (2/3) ... [2025-02-06 10:28:20,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3444bc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:28:20, skipping insertion in model container [2025-02-06 10:28:20,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:28:20" (3/3) ... [2025-02-06 10:28:20,527 INFO L128 eAbstractionObserver]: Analyzing ICFG dll-middle-shared.i [2025-02-06 10:28:20,543 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:28:20,544 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll-middle-shared.i that has 2 procedures, 111 locations, 1 initial locations, 3 loop locations, and 50 error locations. [2025-02-06 10:28:20,591 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:28:20,604 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;@2518574e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:28:20,604 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2025-02-06 10:28:20,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 111 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 107 states have internal predecessors, (112), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:20,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 10:28:20,615 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:20,615 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 10:28:20,616 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:20,621 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash 137390548, now seen corresponding path program 1 times [2025-02-06 10:28:20,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:20,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614942835] [2025-02-06 10:28:20,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:20,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:20,693 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 10:28:20,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 10:28:20,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:20,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:20,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:20,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:20,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614942835] [2025-02-06 10:28:20,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614942835] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:20,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:20,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:28:20,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481723536] [2025-02-06 10:28:20,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:20,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:28:20,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:20,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:28:20,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:20,856 INFO L87 Difference]: Start difference. First operand has 111 states, 57 states have (on average 1.9649122807017543) internal successors, (112), 107 states have internal predecessors, (112), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:28:20,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:20,982 INFO L93 Difference]: Finished difference Result 109 states and 113 transitions. [2025-02-06 10:28:20,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:28:20,984 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-06 10:28:20,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:20,990 INFO L225 Difference]: With dead ends: 109 [2025-02-06 10:28:20,991 INFO L226 Difference]: Without dead ends: 107 [2025-02-06 10:28:20,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:20,998 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 2 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:21,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 167 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:21,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-02-06 10:28:21,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2025-02-06 10:28:21,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 56 states have (on average 1.9107142857142858) internal successors, (107), 103 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2025-02-06 10:28:21,042 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 5 [2025-02-06 10:28:21,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:21,042 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2025-02-06 10:28:21,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:28:21,043 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2025-02-06 10:28:21,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 10:28:21,044 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:21,044 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 10:28:21,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:28:21,044 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:21,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash 137390549, now seen corresponding path program 1 times [2025-02-06 10:28:21,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:21,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155303544] [2025-02-06 10:28:21,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:21,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:21,069 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 10:28:21,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 10:28:21,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:21,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:21,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:21,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155303544] [2025-02-06 10:28:21,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155303544] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:21,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:21,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:28:21,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974951233] [2025-02-06 10:28:21,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:21,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:28:21,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:21,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:28:21,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:21,191 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:28:21,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:21,268 INFO L93 Difference]: Finished difference Result 105 states and 109 transitions. [2025-02-06 10:28:21,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:28:21,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-06 10:28:21,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:21,271 INFO L225 Difference]: With dead ends: 105 [2025-02-06 10:28:21,271 INFO L226 Difference]: Without dead ends: 105 [2025-02-06 10:28:21,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:21,271 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 2 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:21,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 173 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-02-06 10:28:21,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2025-02-06 10:28:21,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 56 states have (on average 1.875) internal successors, (105), 101 states have internal predecessors, (105), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 109 transitions. [2025-02-06 10:28:21,283 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 109 transitions. Word has length 5 [2025-02-06 10:28:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:21,284 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 109 transitions. [2025-02-06 10:28:21,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:28:21,284 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 109 transitions. [2025-02-06 10:28:21,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 10:28:21,284 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:21,285 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:21,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:28:21,285 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:21,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:21,286 INFO L85 PathProgramCache]: Analyzing trace with hash 771409855, now seen corresponding path program 1 times [2025-02-06 10:28:21,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:21,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378506682] [2025-02-06 10:28:21,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:21,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:21,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 10:28:21,314 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 10:28:21,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:21,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:21,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:21,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378506682] [2025-02-06 10:28:21,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378506682] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:21,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:21,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:28:21,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716563542] [2025-02-06 10:28:21,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:21,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:28:21,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:21,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:28:21,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:21,407 INFO L87 Difference]: Start difference. First operand 105 states and 109 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:21,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:21,508 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2025-02-06 10:28:21,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:28:21,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-02-06 10:28:21,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:21,511 INFO L225 Difference]: With dead ends: 109 [2025-02-06 10:28:21,511 INFO L226 Difference]: Without dead ends: 109 [2025-02-06 10:28:21,511 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:21,512 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 15 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:21,512 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 150 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:21,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2025-02-06 10:28:21,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 104. [2025-02-06 10:28:21,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 56 states have (on average 1.8571428571428572) internal successors, (104), 100 states have internal predecessors, (104), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2025-02-06 10:28:21,522 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 11 [2025-02-06 10:28:21,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:21,522 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2025-02-06 10:28:21,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:21,522 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2025-02-06 10:28:21,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-06 10:28:21,522 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:21,522 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:21,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 10:28:21,523 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:21,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:21,523 INFO L85 PathProgramCache]: Analyzing trace with hash 771409856, now seen corresponding path program 1 times [2025-02-06 10:28:21,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:21,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833542423] [2025-02-06 10:28:21,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:21,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:21,535 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 10:28:21,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 10:28:21,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:21,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:21,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:21,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:21,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833542423] [2025-02-06 10:28:21,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833542423] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:21,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:21,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:28:21,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740447879] [2025-02-06 10:28:21,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:21,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:28:21,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:21,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:28:21,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:21,680 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:21,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:21,759 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2025-02-06 10:28:21,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:28:21,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2025-02-06 10:28:21,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:21,761 INFO L225 Difference]: With dead ends: 108 [2025-02-06 10:28:21,761 INFO L226 Difference]: Without dead ends: 108 [2025-02-06 10:28:21,761 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:21,762 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 15 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:21,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 158 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:21,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2025-02-06 10:28:21,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 103. [2025-02-06 10:28:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 56 states have (on average 1.8392857142857142) internal successors, (103), 99 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2025-02-06 10:28:21,769 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 11 [2025-02-06 10:28:21,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:21,771 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2025-02-06 10:28:21,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:21,772 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2025-02-06 10:28:21,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 10:28:21,772 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:21,772 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:21,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 10:28:21,772 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:21,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:21,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1704469092, now seen corresponding path program 1 times [2025-02-06 10:28:21,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:21,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948944268] [2025-02-06 10:28:21,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:21,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:21,787 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 10:28:21,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 10:28:21,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:21,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:21,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:21,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:21,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948944268] [2025-02-06 10:28:21,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948944268] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:21,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:21,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:28:21,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433663400] [2025-02-06 10:28:21,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:21,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:28:21,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:21,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:28:21,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:21,851 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:21,925 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2025-02-06 10:28:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:28:21,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2025-02-06 10:28:21,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:21,927 INFO L225 Difference]: With dead ends: 107 [2025-02-06 10:28:21,927 INFO L226 Difference]: Without dead ends: 107 [2025-02-06 10:28:21,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:21,928 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 12 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:21,928 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 151 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:21,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2025-02-06 10:28:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2025-02-06 10:28:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 56 states have (on average 1.8214285714285714) internal successors, (102), 98 states have internal predecessors, (102), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2025-02-06 10:28:21,936 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 13 [2025-02-06 10:28:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:21,936 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2025-02-06 10:28:21,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2025-02-06 10:28:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 10:28:21,937 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:21,937 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:21,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 10:28:21,937 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:21,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:21,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1704469091, now seen corresponding path program 1 times [2025-02-06 10:28:21,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:21,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719118627] [2025-02-06 10:28:21,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:21,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:21,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 10:28:21,967 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 10:28:21,971 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:21,972 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:22,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:22,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719118627] [2025-02-06 10:28:22,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719118627] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:22,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:22,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:28:22,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168167269] [2025-02-06 10:28:22,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:22,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:28:22,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:22,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:28:22,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:22,081 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:22,152 INFO L93 Difference]: Finished difference Result 106 states and 112 transitions. [2025-02-06 10:28:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:28:22,152 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2025-02-06 10:28:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:22,153 INFO L225 Difference]: With dead ends: 106 [2025-02-06 10:28:22,153 INFO L226 Difference]: Without dead ends: 106 [2025-02-06 10:28:22,153 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:28:22,154 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 12 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:22,154 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 159 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:22,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-02-06 10:28:22,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2025-02-06 10:28:22,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 56 states have (on average 1.8035714285714286) internal successors, (101), 97 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2025-02-06 10:28:22,159 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 13 [2025-02-06 10:28:22,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:22,159 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2025-02-06 10:28:22,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:22,159 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2025-02-06 10:28:22,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 10:28:22,160 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:22,160 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:22,160 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 10:28:22,160 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:22,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:22,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1612255303, now seen corresponding path program 1 times [2025-02-06 10:28:22,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:22,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571938002] [2025-02-06 10:28:22,161 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:22,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:22,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 10:28:22,186 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 10:28:22,186 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:22,186 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:22,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:22,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:22,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571938002] [2025-02-06 10:28:22,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571938002] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:22,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:22,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:28:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996483500] [2025-02-06 10:28:22,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:22,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:28:22,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:22,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:28:22,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:28:22,404 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:22,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:22,565 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2025-02-06 10:28:22,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:28:22,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2025-02-06 10:28:22,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:22,566 INFO L225 Difference]: With dead ends: 100 [2025-02-06 10:28:22,566 INFO L226 Difference]: Without dead ends: 100 [2025-02-06 10:28:22,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:28:22,566 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 44 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:22,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 249 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:22,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-02-06 10:28:22,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2025-02-06 10:28:22,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 56 states have (on average 1.6964285714285714) internal successors, (95), 91 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:22,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2025-02-06 10:28:22,575 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 15 [2025-02-06 10:28:22,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:22,575 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2025-02-06 10:28:22,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:22,575 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2025-02-06 10:28:22,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 10:28:22,576 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:22,576 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:22,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 10:28:22,576 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:22,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:22,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1612255302, now seen corresponding path program 1 times [2025-02-06 10:28:22,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:22,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629702408] [2025-02-06 10:28:22,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:22,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:22,590 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 10:28:22,601 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 10:28:22,603 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:22,603 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:22,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:22,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629702408] [2025-02-06 10:28:22,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629702408] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:22,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:22,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 10:28:22,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031467358] [2025-02-06 10:28:22,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:22,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:28:22,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:22,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:28:22,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:28:22,947 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:23,201 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2025-02-06 10:28:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:28:23,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2025-02-06 10:28:23,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:23,203 INFO L225 Difference]: With dead ends: 98 [2025-02-06 10:28:23,203 INFO L226 Difference]: Without dead ends: 98 [2025-02-06 10:28:23,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:28:23,204 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 16 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:23,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 282 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:23,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-02-06 10:28:23,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 93. [2025-02-06 10:28:23,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 56 states have (on average 1.6607142857142858) internal successors, (93), 89 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:23,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2025-02-06 10:28:23,214 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 15 [2025-02-06 10:28:23,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:23,215 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2025-02-06 10:28:23,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:23,215 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2025-02-06 10:28:23,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-06 10:28:23,216 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:23,219 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:23,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 10:28:23,220 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:23,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:23,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1723400388, now seen corresponding path program 1 times [2025-02-06 10:28:23,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:23,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601988124] [2025-02-06 10:28:23,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:23,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:23,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 10:28:23,261 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 10:28:23,261 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:23,261 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:23,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:23,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601988124] [2025-02-06 10:28:23,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601988124] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:23,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:23,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:28:23,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498225804] [2025-02-06 10:28:23,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:23,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:28:23,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:23,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:28:23,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:28:23,395 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:23,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:23,556 INFO L93 Difference]: Finished difference Result 127 states and 139 transitions. [2025-02-06 10:28:23,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:28:23,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2025-02-06 10:28:23,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:23,558 INFO L225 Difference]: With dead ends: 127 [2025-02-06 10:28:23,558 INFO L226 Difference]: Without dead ends: 127 [2025-02-06 10:28:23,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:28:23,558 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 57 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:23,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 269 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:23,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2025-02-06 10:28:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 114. [2025-02-06 10:28:23,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 77 states have (on average 1.6753246753246753) internal successors, (129), 109 states have internal predecessors, (129), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2025-02-06 10:28:23,563 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 22 [2025-02-06 10:28:23,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:23,563 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2025-02-06 10:28:23,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:23,563 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2025-02-06 10:28:23,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-06 10:28:23,564 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:23,564 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:23,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 10:28:23,564 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:23,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:23,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1723400389, now seen corresponding path program 1 times [2025-02-06 10:28:23,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:23,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544942526] [2025-02-06 10:28:23,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:23,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:23,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 10:28:23,582 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 10:28:23,582 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:23,582 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:23,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:23,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544942526] [2025-02-06 10:28:23,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544942526] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:23,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:23,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:28:23,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859641631] [2025-02-06 10:28:23,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:23,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:28:23,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:23,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:28:23,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:28:23,822 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:24,036 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2025-02-06 10:28:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:28:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2025-02-06 10:28:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:24,037 INFO L225 Difference]: With dead ends: 132 [2025-02-06 10:28:24,037 INFO L226 Difference]: Without dead ends: 132 [2025-02-06 10:28:24,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:28:24,038 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 31 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:24,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 507 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:24,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-02-06 10:28:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 123. [2025-02-06 10:28:24,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 86 states have (on average 1.6395348837209303) internal successors, (141), 118 states have internal predecessors, (141), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 147 transitions. [2025-02-06 10:28:24,048 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 147 transitions. Word has length 22 [2025-02-06 10:28:24,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:24,049 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 147 transitions. [2025-02-06 10:28:24,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 147 transitions. [2025-02-06 10:28:24,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-06 10:28:24,049 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:24,050 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:24,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 10:28:24,050 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:24,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:24,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1669582794, now seen corresponding path program 1 times [2025-02-06 10:28:24,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:24,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203700373] [2025-02-06 10:28:24,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:24,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:24,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 10:28:24,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 10:28:24,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:24,079 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203700373] [2025-02-06 10:28:24,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203700373] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:24,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:24,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:28:24,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375101653] [2025-02-06 10:28:24,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:24,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:28:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:24,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:28:24,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:28:24,181 INFO L87 Difference]: Start difference. First operand 123 states and 147 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:24,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:24,230 INFO L93 Difference]: Finished difference Result 137 states and 164 transitions. [2025-02-06 10:28:24,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:28:24,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2025-02-06 10:28:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:24,232 INFO L225 Difference]: With dead ends: 137 [2025-02-06 10:28:24,232 INFO L226 Difference]: Without dead ends: 137 [2025-02-06 10:28:24,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:28:24,233 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 34 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:24,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 557 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:28:24,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-02-06 10:28:24,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2025-02-06 10:28:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 88 states have (on average 1.6136363636363635) internal successors, (142), 120 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 148 transitions. [2025-02-06 10:28:24,240 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 148 transitions. Word has length 24 [2025-02-06 10:28:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:24,241 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 148 transitions. [2025-02-06 10:28:24,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 148 transitions. [2025-02-06 10:28:24,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-06 10:28:24,241 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:24,241 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] [2025-02-06 10:28:24,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 10:28:24,243 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:24,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1869033636, now seen corresponding path program 1 times [2025-02-06 10:28:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:24,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862154550] [2025-02-06 10:28:24,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:24,258 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 10:28:24,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 10:28:24,269 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:24,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:24,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:24,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862154550] [2025-02-06 10:28:24,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862154550] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:24,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:24,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:28:24,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684587609] [2025-02-06 10:28:24,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:24,436 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:28:24,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:24,436 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:28:24,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:28:24,437 INFO L87 Difference]: Start difference. First operand 125 states and 148 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:24,585 INFO L93 Difference]: Finished difference Result 125 states and 147 transitions. [2025-02-06 10:28:24,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:28:24,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2025-02-06 10:28:24,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:24,587 INFO L225 Difference]: With dead ends: 125 [2025-02-06 10:28:24,587 INFO L226 Difference]: Without dead ends: 125 [2025-02-06 10:28:24,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:28:24,588 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 19 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:24,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 200 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:24,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-02-06 10:28:24,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2025-02-06 10:28:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 88 states have (on average 1.6022727272727273) internal successors, (141), 120 states have internal predecessors, (141), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:24,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2025-02-06 10:28:24,592 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 26 [2025-02-06 10:28:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:24,593 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2025-02-06 10:28:24,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:24,593 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2025-02-06 10:28:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-06 10:28:24,594 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:24,594 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] [2025-02-06 10:28:24,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 10:28:24,594 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:24,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:24,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1869033637, now seen corresponding path program 1 times [2025-02-06 10:28:24,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:24,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254587362] [2025-02-06 10:28:24,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:24,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:24,616 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 10:28:24,629 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 10:28:24,629 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:24,629 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:24,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:24,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254587362] [2025-02-06 10:28:24,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254587362] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:24,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808835373] [2025-02-06 10:28:24,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:24,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:24,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:24,922 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:24,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 10:28:25,000 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 10:28:25,051 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 10:28:25,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:25,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:25,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 10:28:25,061 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:25,182 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2025-02-06 10:28:25,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:28:25,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:28:25,269 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:28:25,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-02-06 10:28:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:25,296 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:28:25,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808835373] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:25,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:28:25,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2025-02-06 10:28:25,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709785342] [2025-02-06 10:28:25,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:25,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:28:25,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:25,297 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:28:25,297 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=170, Unknown=1, NotChecked=26, Total=240 [2025-02-06 10:28:25,298 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:25,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:25,447 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2025-02-06 10:28:25,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:28:25,447 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2025-02-06 10:28:25,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:25,448 INFO L225 Difference]: With dead ends: 131 [2025-02-06 10:28:25,448 INFO L226 Difference]: Without dead ends: 131 [2025-02-06 10:28:25,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=170, Unknown=1, NotChecked=26, Total=240 [2025-02-06 10:28:25,448 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 55 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:25,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 208 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 153 Invalid, 0 Unknown, 142 Unchecked, 0.1s Time] [2025-02-06 10:28:25,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-02-06 10:28:25,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 125. [2025-02-06 10:28:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 88 states have (on average 1.5454545454545454) internal successors, (136), 120 states have internal predecessors, (136), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:25,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 142 transitions. [2025-02-06 10:28:25,456 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 142 transitions. Word has length 26 [2025-02-06 10:28:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:25,456 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 142 transitions. [2025-02-06 10:28:25,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 142 transitions. [2025-02-06 10:28:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-06 10:28:25,457 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:25,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:25,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 10:28:25,662 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,SelfDestructingSolverStorable12 [2025-02-06 10:28:25,662 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:25,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:25,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1829589056, now seen corresponding path program 1 times [2025-02-06 10:28:25,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:25,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669628753] [2025-02-06 10:28:25,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:25,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:25,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 10:28:25,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 10:28:25,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:25,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:25,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:25,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669628753] [2025-02-06 10:28:25,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669628753] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:25,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:25,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:28:25,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200638127] [2025-02-06 10:28:25,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:25,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:28:25,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:25,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:28:25,778 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:28:25,778 INFO L87 Difference]: Start difference. First operand 125 states and 142 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:25,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:25,930 INFO L93 Difference]: Finished difference Result 144 states and 158 transitions. [2025-02-06 10:28:25,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:28:25,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2025-02-06 10:28:25,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:25,933 INFO L225 Difference]: With dead ends: 144 [2025-02-06 10:28:25,933 INFO L226 Difference]: Without dead ends: 144 [2025-02-06 10:28:25,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:28:25,934 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 42 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:25,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 292 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:25,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-02-06 10:28:25,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 135. [2025-02-06 10:28:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 98 states have (on average 1.530612244897959) internal successors, (150), 130 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 156 transitions. [2025-02-06 10:28:25,938 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 156 transitions. Word has length 26 [2025-02-06 10:28:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:25,938 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 156 transitions. [2025-02-06 10:28:25,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 156 transitions. [2025-02-06 10:28:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-06 10:28:25,939 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:25,939 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:25,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 10:28:25,939 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:25,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:25,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1829589057, now seen corresponding path program 1 times [2025-02-06 10:28:25,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:25,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882476877] [2025-02-06 10:28:25,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:25,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:25,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 10:28:25,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 10:28:25,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:25,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:26,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:26,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:26,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882476877] [2025-02-06 10:28:26,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882476877] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:26,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:26,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:28:26,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292710451] [2025-02-06 10:28:26,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:26,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:28:26,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:26,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:28:26,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:28:26,146 INFO L87 Difference]: Start difference. First operand 135 states and 156 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:26,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:26,284 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2025-02-06 10:28:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:28:26,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2025-02-06 10:28:26,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:26,285 INFO L225 Difference]: With dead ends: 139 [2025-02-06 10:28:26,286 INFO L226 Difference]: Without dead ends: 139 [2025-02-06 10:28:26,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:28:26,286 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 29 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:26,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 557 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:26,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2025-02-06 10:28:26,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2025-02-06 10:28:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 102 states have (on average 1.5098039215686274) internal successors, (154), 134 states have internal predecessors, (154), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 160 transitions. [2025-02-06 10:28:26,292 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 160 transitions. Word has length 26 [2025-02-06 10:28:26,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:26,292 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 160 transitions. [2025-02-06 10:28:26,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 160 transitions. [2025-02-06 10:28:26,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-06 10:28:26,293 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:26,293 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] [2025-02-06 10:28:26,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 10:28:26,293 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:26,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:26,294 INFO L85 PathProgramCache]: Analyzing trace with hash 425082227, now seen corresponding path program 1 times [2025-02-06 10:28:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:26,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534088619] [2025-02-06 10:28:26,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:26,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:26,310 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 10:28:26,316 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 10:28:26,316 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:26,316 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:28:26,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:26,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534088619] [2025-02-06 10:28:26,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534088619] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:26,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:26,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:28:26,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593991954] [2025-02-06 10:28:26,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:26,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:28:26,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:26,420 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:28:26,420 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:28:26,420 INFO L87 Difference]: Start difference. First operand 139 states and 160 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:28:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:26,587 INFO L93 Difference]: Finished difference Result 138 states and 158 transitions. [2025-02-06 10:28:26,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:28:26,587 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2025-02-06 10:28:26,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:26,588 INFO L225 Difference]: With dead ends: 138 [2025-02-06 10:28:26,588 INFO L226 Difference]: Without dead ends: 138 [2025-02-06 10:28:26,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:28:26,589 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 8 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:26,589 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 313 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-02-06 10:28:26,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2025-02-06 10:28:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 102 states have (on average 1.4901960784313726) internal successors, (152), 133 states have internal predecessors, (152), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2025-02-06 10:28:26,593 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 29 [2025-02-06 10:28:26,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:26,593 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2025-02-06 10:28:26,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:28:26,594 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2025-02-06 10:28:26,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-06 10:28:26,594 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:26,594 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] [2025-02-06 10:28:26,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 10:28:26,595 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:26,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:26,595 INFO L85 PathProgramCache]: Analyzing trace with hash 425082228, now seen corresponding path program 1 times [2025-02-06 10:28:26,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:26,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507203227] [2025-02-06 10:28:26,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:26,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:26,626 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 10:28:26,633 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 10:28:26,633 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:26,634 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:26,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:26,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507203227] [2025-02-06 10:28:26,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507203227] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:26,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:26,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:28:26,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743363048] [2025-02-06 10:28:26,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:26,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:28:26,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:26,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:28:26,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:28:26,855 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:28:27,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:27,036 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2025-02-06 10:28:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:28:27,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2025-02-06 10:28:27,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:27,039 INFO L225 Difference]: With dead ends: 137 [2025-02-06 10:28:27,040 INFO L226 Difference]: Without dead ends: 137 [2025-02-06 10:28:27,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:28:27,040 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 3 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:27,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 348 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:27,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-02-06 10:28:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2025-02-06 10:28:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 102 states have (on average 1.4705882352941178) internal successors, (150), 132 states have internal predecessors, (150), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:27,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 156 transitions. [2025-02-06 10:28:27,047 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 156 transitions. Word has length 29 [2025-02-06 10:28:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:27,047 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 156 transitions. [2025-02-06 10:28:27,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:28:27,049 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 156 transitions. [2025-02-06 10:28:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-06 10:28:27,050 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:27,050 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, 1, 1] [2025-02-06 10:28:27,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 10:28:27,050 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:27,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:27,051 INFO L85 PathProgramCache]: Analyzing trace with hash 2061086493, now seen corresponding path program 1 times [2025-02-06 10:28:27,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:27,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430730944] [2025-02-06 10:28:27,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:27,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:27,068 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 10:28:27,078 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 10:28:27,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:27,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:27,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:27,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:27,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430730944] [2025-02-06 10:28:27,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430730944] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:27,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:27,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-06 10:28:27,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447986198] [2025-02-06 10:28:27,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:27,358 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:28:27,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:27,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:28:27,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:28:27,359 INFO L87 Difference]: Start difference. First operand 137 states and 156 transitions. Second operand has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:27,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:27,672 INFO L93 Difference]: Finished difference Result 138 states and 155 transitions. [2025-02-06 10:28:27,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:28:27,672 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2025-02-06 10:28:27,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:27,673 INFO L225 Difference]: With dead ends: 138 [2025-02-06 10:28:27,673 INFO L226 Difference]: Without dead ends: 138 [2025-02-06 10:28:27,673 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:28:27,674 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 27 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:27,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 483 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:28:27,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-02-06 10:28:27,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2025-02-06 10:28:27,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 102 states have (on average 1.4607843137254901) internal successors, (149), 132 states have internal predecessors, (149), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:27,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 155 transitions. [2025-02-06 10:28:27,680 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 155 transitions. Word has length 32 [2025-02-06 10:28:27,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:27,680 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 155 transitions. [2025-02-06 10:28:27,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 155 transitions. [2025-02-06 10:28:27,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-06 10:28:27,681 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:27,681 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, 1, 1] [2025-02-06 10:28:27,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-02-06 10:28:27,682 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:27,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:27,683 INFO L85 PathProgramCache]: Analyzing trace with hash 2061086494, now seen corresponding path program 1 times [2025-02-06 10:28:27,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:27,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014193915] [2025-02-06 10:28:27,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:27,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:27,698 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 10:28:27,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 10:28:27,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:27,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:28,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:28,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:28,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014193915] [2025-02-06 10:28:28,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014193915] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:28,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:28,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-02-06 10:28:28,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762082130] [2025-02-06 10:28:28,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:28,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:28:28,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:28,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:28:28,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:28:28,073 INFO L87 Difference]: Start difference. First operand 137 states and 155 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:28,384 INFO L93 Difference]: Finished difference Result 137 states and 154 transitions. [2025-02-06 10:28:28,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:28:28,385 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2025-02-06 10:28:28,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:28,386 INFO L225 Difference]: With dead ends: 137 [2025-02-06 10:28:28,386 INFO L226 Difference]: Without dead ends: 137 [2025-02-06 10:28:28,386 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:28:28,387 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 25 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:28,387 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 456 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:28:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2025-02-06 10:28:28,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2025-02-06 10:28:28,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 102 states have (on average 1.4509803921568627) internal successors, (148), 132 states have internal predecessors, (148), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 154 transitions. [2025-02-06 10:28:28,396 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 154 transitions. Word has length 32 [2025-02-06 10:28:28,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:28,397 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 154 transitions. [2025-02-06 10:28:28,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:28,397 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 154 transitions. [2025-02-06 10:28:28,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-06 10:28:28,397 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:28,397 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:28,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-02-06 10:28:28,398 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:28,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:28,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1528186753, now seen corresponding path program 1 times [2025-02-06 10:28:28,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:28,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378696738] [2025-02-06 10:28:28,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:28,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:28,413 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 10:28:28,419 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 10:28:28,420 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:28,420 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:28,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:28,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378696738] [2025-02-06 10:28:28,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378696738] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:28,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:28,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 10:28:28,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213050703] [2025-02-06 10:28:28,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:28,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:28:28,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:28,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:28:28,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:28:28,502 INFO L87 Difference]: Start difference. First operand 137 states and 154 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:28,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:28,715 INFO L93 Difference]: Finished difference Result 155 states and 176 transitions. [2025-02-06 10:28:28,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:28:28,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2025-02-06 10:28:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:28,716 INFO L225 Difference]: With dead ends: 155 [2025-02-06 10:28:28,716 INFO L226 Difference]: Without dead ends: 155 [2025-02-06 10:28:28,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:28:28,717 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 41 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:28,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 298 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:28,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-02-06 10:28:28,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 148. [2025-02-06 10:28:28,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 114 states have (on average 1.4736842105263157) internal successors, (168), 143 states have internal predecessors, (168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:28,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 174 transitions. [2025-02-06 10:28:28,725 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 174 transitions. Word has length 31 [2025-02-06 10:28:28,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:28,725 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 174 transitions. [2025-02-06 10:28:28,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:28,725 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 174 transitions. [2025-02-06 10:28:28,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-06 10:28:28,726 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:28,726 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:28,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-02-06 10:28:28,726 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:28,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1528186752, now seen corresponding path program 1 times [2025-02-06 10:28:28,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:28,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223580975] [2025-02-06 10:28:28,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:28,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:28,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 10:28:28,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 10:28:28,769 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:28,769 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:28,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:28,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223580975] [2025-02-06 10:28:28,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223580975] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:28,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132921345] [2025-02-06 10:28:28,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:28,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:28,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:28,995 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:28,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 10:28:29,093 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 10:28:29,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 10:28:29,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:29,128 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:29,129 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 35 conjuncts are in the unsatisfiable core [2025-02-06 10:28:29,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:29,312 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:28:29,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132921345] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:29,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:28:29,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2025-02-06 10:28:29,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342989448] [2025-02-06 10:28:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:29,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:28:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:29,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:28:29,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:28:29,317 INFO L87 Difference]: Start difference. First operand 148 states and 174 transitions. Second operand has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:29,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:29,538 INFO L93 Difference]: Finished difference Result 174 states and 202 transitions. [2025-02-06 10:28:29,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:28:29,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2025-02-06 10:28:29,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:29,539 INFO L225 Difference]: With dead ends: 174 [2025-02-06 10:28:29,539 INFO L226 Difference]: Without dead ends: 174 [2025-02-06 10:28:29,540 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:28:29,541 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 55 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:29,541 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 301 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:29,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-02-06 10:28:29,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 162. [2025-02-06 10:28:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.5078125) internal successors, (193), 157 states have internal predecessors, (193), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 199 transitions. [2025-02-06 10:28:29,550 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 199 transitions. Word has length 31 [2025-02-06 10:28:29,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:29,551 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 199 transitions. [2025-02-06 10:28:29,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.142857142857143) internal successors, (29), 8 states have internal predecessors, (29), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:29,551 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 199 transitions. [2025-02-06 10:28:29,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-06 10:28:29,552 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:29,553 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:29,563 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 10:28:29,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:29,754 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:29,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:29,754 INFO L85 PathProgramCache]: Analyzing trace with hash -129149079, now seen corresponding path program 1 times [2025-02-06 10:28:29,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:29,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649748080] [2025-02-06 10:28:29,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:29,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:29,769 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 10:28:29,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 10:28:29,776 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:29,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:30,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:30,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649748080] [2025-02-06 10:28:30,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649748080] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:30,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733962871] [2025-02-06 10:28:30,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:30,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:30,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:30,052 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:30,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 10:28:30,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 10:28:30,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 10:28:30,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:30,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:30,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 36 conjuncts are in the unsatisfiable core [2025-02-06 10:28:30,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:30,310 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 [2025-02-06 10:28:30,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-06 10:28:30,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:30,464 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:28:30,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733962871] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:30,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:28:30,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2025-02-06 10:28:30,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980607905] [2025-02-06 10:28:30,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:30,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:28:30,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:30,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:28:30,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:28:30,466 INFO L87 Difference]: Start difference. First operand 162 states and 199 transitions. Second operand has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:30,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:30,731 INFO L93 Difference]: Finished difference Result 173 states and 201 transitions. [2025-02-06 10:28:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:28:30,732 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2025-02-06 10:28:30,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:30,733 INFO L225 Difference]: With dead ends: 173 [2025-02-06 10:28:30,733 INFO L226 Difference]: Without dead ends: 173 [2025-02-06 10:28:30,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2025-02-06 10:28:30,735 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 40 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:30,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 628 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:30,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-02-06 10:28:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 162. [2025-02-06 10:28:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 128 states have (on average 1.5) internal successors, (192), 157 states have internal predecessors, (192), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:30,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 198 transitions. [2025-02-06 10:28:30,740 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 198 transitions. Word has length 32 [2025-02-06 10:28:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:30,740 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 198 transitions. [2025-02-06 10:28:30,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 198 transitions. [2025-02-06 10:28:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-06 10:28:30,741 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:30,741 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, 1, 1, 1] [2025-02-06 10:28:30,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 10:28:30,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:30,942 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:30,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:30,942 INFO L85 PathProgramCache]: Analyzing trace with hash 272230985, now seen corresponding path program 1 times [2025-02-06 10:28:30,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:30,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056903456] [2025-02-06 10:28:30,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:30,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:30,954 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 10:28:30,966 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 10:28:30,967 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:30,967 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:31,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:31,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:31,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056903456] [2025-02-06 10:28:31,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056903456] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:31,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71063037] [2025-02-06 10:28:31,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:31,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:31,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:31,746 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:31,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 10:28:31,842 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 10:28:31,876 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 10:28:31,876 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:31,876 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:31,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 79 conjuncts are in the unsatisfiable core [2025-02-06 10:28:31,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:31,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 10:28:31,920 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 [2025-02-06 10:28:31,925 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 [2025-02-06 10:28:31,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-06 10:28:31,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 10:28:32,092 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-02-06 10:28:32,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-02-06 10:28:32,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-02-06 10:28:32,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:28:32,231 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2025-02-06 10:28:32,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2025-02-06 10:28:32,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:28:32,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2025-02-06 10:28:32,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:28:32,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 10:28:32,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:28:32,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:28:32,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2025-02-06 10:28:32,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:28:32,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:28:32,504 INFO L349 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2025-02-06 10:28:32,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 44 [2025-02-06 10:28:32,535 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2025-02-06 10:28:32,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2025-02-06 10:28:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:32,895 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:28:34,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:34,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 36 [2025-02-06 10:28:34,516 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:34,517 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 140 treesize of output 130 [2025-02-06 10:28:34,530 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 25 treesize of output 21 [2025-02-06 10:28:34,537 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 28 treesize of output 20 [2025-02-06 10:28:34,629 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:34,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 36 [2025-02-06 10:28:34,635 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 10:28:34,641 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:34,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 80 treesize of output 70 [2025-02-06 10:28:34,650 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 54 treesize of output 46 [2025-02-06 10:28:34,657 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 [2025-02-06 10:28:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [71063037] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:28:34,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:28:34,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 18] total 40 [2025-02-06 10:28:34,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270450120] [2025-02-06 10:28:34,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:28:34,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-06 10:28:34,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:34,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-06 10:28:34,825 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1415, Unknown=10, NotChecked=0, Total=1560 [2025-02-06 10:28:34,825 INFO L87 Difference]: Start difference. First operand 162 states and 198 transitions. Second operand has 40 states, 40 states have (on average 1.775) internal successors, (71), 37 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:28:35,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:35,941 INFO L93 Difference]: Finished difference Result 157 states and 190 transitions. [2025-02-06 10:28:35,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 10:28:35,942 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.775) internal successors, (71), 37 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 33 [2025-02-06 10:28:35,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:35,943 INFO L225 Difference]: With dead ends: 157 [2025-02-06 10:28:35,943 INFO L226 Difference]: Without dead ends: 157 [2025-02-06 10:28:35,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=206, Invalid=1946, Unknown=10, NotChecked=0, Total=2162 [2025-02-06 10:28:35,944 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 33 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:35,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1248 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-06 10:28:35,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-02-06 10:28:35,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-02-06 10:28:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 123 states have (on average 1.4959349593495934) internal successors, (184), 152 states have internal predecessors, (184), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:35,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2025-02-06 10:28:35,949 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 33 [2025-02-06 10:28:35,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:35,949 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2025-02-06 10:28:35,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.775) internal successors, (71), 37 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:28:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2025-02-06 10:28:35,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-06 10:28:35,950 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:35,950 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:35,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 10:28:36,154 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,SelfDestructingSolverStorable22 [2025-02-06 10:28:36,154 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:36,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:36,155 INFO L85 PathProgramCache]: Analyzing trace with hash 291345853, now seen corresponding path program 1 times [2025-02-06 10:28:36,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:36,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615987911] [2025-02-06 10:28:36,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:36,167 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 10:28:36,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 10:28:36,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:36,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:36,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:36,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615987911] [2025-02-06 10:28:36,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615987911] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:36,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632756737] [2025-02-06 10:28:36,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:36,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:36,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:36,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:36,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 10:28:36,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 10:28:36,546 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 10:28:36,546 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:36,546 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:36,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-06 10:28:36,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:36,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 10:28:36,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-02-06 10:28:36,804 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 17 treesize of output 9 [2025-02-06 10:28:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:36,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:28:36,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632756737] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:36,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:28:36,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2025-02-06 10:28:36,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8824349] [2025-02-06 10:28:36,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:36,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:28:36,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:36,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:28:36,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:28:36,810 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:37,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:37,111 INFO L93 Difference]: Finished difference Result 165 states and 192 transitions. [2025-02-06 10:28:37,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:28:37,112 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2025-02-06 10:28:37,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:37,113 INFO L225 Difference]: With dead ends: 165 [2025-02-06 10:28:37,113 INFO L226 Difference]: Without dead ends: 165 [2025-02-06 10:28:37,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2025-02-06 10:28:37,114 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 39 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:37,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 496 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:28:37,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-02-06 10:28:37,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 157. [2025-02-06 10:28:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 123 states have (on average 1.4878048780487805) internal successors, (183), 152 states have internal predecessors, (183), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:37,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 189 transitions. [2025-02-06 10:28:37,118 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 189 transitions. Word has length 33 [2025-02-06 10:28:37,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:37,118 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 189 transitions. [2025-02-06 10:28:37,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:37,118 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 189 transitions. [2025-02-06 10:28:37,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-06 10:28:37,119 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:37,119 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:37,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 10:28:37,323 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,SelfDestructingSolverStorable23 [2025-02-06 10:28:37,323 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:37,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:37,323 INFO L85 PathProgramCache]: Analyzing trace with hash 291359435, now seen corresponding path program 1 times [2025-02-06 10:28:37,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:37,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752705474] [2025-02-06 10:28:37,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:37,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:37,334 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 10:28:37,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 10:28:37,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:37,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:37,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:37,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752705474] [2025-02-06 10:28:37,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752705474] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:37,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:37,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 10:28:37,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948793595] [2025-02-06 10:28:37,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:37,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:28:37,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:37,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:28:37,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:28:37,416 INFO L87 Difference]: Start difference. First operand 157 states and 189 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:37,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:37,506 INFO L93 Difference]: Finished difference Result 160 states and 188 transitions. [2025-02-06 10:28:37,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:28:37,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2025-02-06 10:28:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:37,507 INFO L225 Difference]: With dead ends: 160 [2025-02-06 10:28:37,507 INFO L226 Difference]: Without dead ends: 160 [2025-02-06 10:28:37,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:28:37,508 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 50 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:37,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 508 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:37,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2025-02-06 10:28:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2025-02-06 10:28:37,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 120 states have (on average 1.4416666666666667) internal successors, (173), 149 states have internal predecessors, (173), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:37,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 179 transitions. [2025-02-06 10:28:37,511 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 179 transitions. Word has length 33 [2025-02-06 10:28:37,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:37,512 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 179 transitions. [2025-02-06 10:28:37,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 179 transitions. [2025-02-06 10:28:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-06 10:28:37,512 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:37,512 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, 1, 1, 1, 1, 1] [2025-02-06 10:28:37,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-02-06 10:28:37,512 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:37,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash 975292940, now seen corresponding path program 1 times [2025-02-06 10:28:37,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:37,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881257069] [2025-02-06 10:28:37,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:37,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:37,526 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 10:28:37,537 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 10:28:37,537 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:37,537 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:37,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:37,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881257069] [2025-02-06 10:28:37,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881257069] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:37,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:37,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-02-06 10:28:37,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506306799] [2025-02-06 10:28:37,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:37,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:28:37,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:37,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:28:37,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:28:37,826 INFO L87 Difference]: Start difference. First operand 154 states and 179 transitions. Second operand has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:38,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:38,132 INFO L93 Difference]: Finished difference Result 155 states and 178 transitions. [2025-02-06 10:28:38,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:28:38,132 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2025-02-06 10:28:38,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:38,133 INFO L225 Difference]: With dead ends: 155 [2025-02-06 10:28:38,133 INFO L226 Difference]: Without dead ends: 155 [2025-02-06 10:28:38,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:28:38,134 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 30 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:38,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 474 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:28:38,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-02-06 10:28:38,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2025-02-06 10:28:38,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 120 states have (on average 1.4333333333333333) internal successors, (172), 149 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:38,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 178 transitions. [2025-02-06 10:28:38,137 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 178 transitions. Word has length 35 [2025-02-06 10:28:38,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:38,138 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 178 transitions. [2025-02-06 10:28:38,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:38,138 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 178 transitions. [2025-02-06 10:28:38,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-06 10:28:38,138 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:38,138 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, 1, 1, 1, 1, 1] [2025-02-06 10:28:38,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-02-06 10:28:38,139 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:38,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:38,139 INFO L85 PathProgramCache]: Analyzing trace with hash 975292941, now seen corresponding path program 1 times [2025-02-06 10:28:38,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:38,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292118689] [2025-02-06 10:28:38,139 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:38,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:38,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 10:28:38,162 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 10:28:38,162 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:38,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:38,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:38,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292118689] [2025-02-06 10:28:38,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292118689] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:38,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:38,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-06 10:28:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776548135] [2025-02-06 10:28:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:38,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:28:38,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:38,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:28:38,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:28:38,565 INFO L87 Difference]: Start difference. First operand 154 states and 178 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:38,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:38,896 INFO L93 Difference]: Finished difference Result 154 states and 177 transitions. [2025-02-06 10:28:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:28:38,896 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2025-02-06 10:28:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:38,897 INFO L225 Difference]: With dead ends: 154 [2025-02-06 10:28:38,897 INFO L226 Difference]: Without dead ends: 154 [2025-02-06 10:28:38,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:28:38,898 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 28 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:38,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 443 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:28:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-02-06 10:28:38,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2025-02-06 10:28:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 120 states have (on average 1.425) internal successors, (171), 149 states have internal predecessors, (171), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:38,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 177 transitions. [2025-02-06 10:28:38,902 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 177 transitions. Word has length 35 [2025-02-06 10:28:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:38,903 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 177 transitions. [2025-02-06 10:28:38,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:28:38,903 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 177 transitions. [2025-02-06 10:28:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 10:28:38,903 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:38,903 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:38,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-02-06 10:28:38,904 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:38,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:38,904 INFO L85 PathProgramCache]: Analyzing trace with hash 441786855, now seen corresponding path program 1 times [2025-02-06 10:28:38,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:38,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933703326] [2025-02-06 10:28:38,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:38,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:38,918 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:28:38,926 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:28:38,926 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:38,926 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:39,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:39,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933703326] [2025-02-06 10:28:39,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933703326] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:39,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825563168] [2025-02-06 10:28:39,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:39,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:39,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:39,220 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:39,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 10:28:39,347 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:28:39,379 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:28:39,379 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:39,379 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:39,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-06 10:28:39,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:39,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 10:28:39,482 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-02-06 10:28:39,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-02-06 10:28:39,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 10:28:39,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2025-02-06 10:28:39,667 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 17 treesize of output 9 [2025-02-06 10:28:39,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:39,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:28:39,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825563168] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:39,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:28:39,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2025-02-06 10:28:39,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947990049] [2025-02-06 10:28:39,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:39,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:28:39,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:39,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:28:39,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2025-02-06 10:28:39,673 INFO L87 Difference]: Start difference. First operand 154 states and 177 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:39,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:39,872 INFO L93 Difference]: Finished difference Result 154 states and 176 transitions. [2025-02-06 10:28:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:28:39,872 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2025-02-06 10:28:39,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:39,873 INFO L225 Difference]: With dead ends: 154 [2025-02-06 10:28:39,873 INFO L226 Difference]: Without dead ends: 154 [2025-02-06 10:28:39,873 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2025-02-06 10:28:39,874 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 11 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:39,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 583 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:39,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2025-02-06 10:28:39,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2025-02-06 10:28:39,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 120 states have (on average 1.4166666666666667) internal successors, (170), 149 states have internal predecessors, (170), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 176 transitions. [2025-02-06 10:28:39,879 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 176 transitions. Word has length 34 [2025-02-06 10:28:39,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:39,879 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 176 transitions. [2025-02-06 10:28:39,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 176 transitions. [2025-02-06 10:28:39,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2025-02-06 10:28:39,881 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:39,881 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:39,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 10:28:40,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-06 10:28:40,085 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:40,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:40,085 INFO L85 PathProgramCache]: Analyzing trace with hash 810490618, now seen corresponding path program 1 times [2025-02-06 10:28:40,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:40,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554004336] [2025-02-06 10:28:40,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:40,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 10:28:40,100 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 10:28:40,100 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:40,100 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:40,389 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:40,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:40,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554004336] [2025-02-06 10:28:40,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554004336] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:40,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153276844] [2025-02-06 10:28:40,390 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:40,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:40,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:40,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:40,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 10:28:40,522 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-02-06 10:28:40,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-02-06 10:28:40,551 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:40,551 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:40,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-06 10:28:40,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:40,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 10:28:40,574 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:28:40,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-02-06 10:28:40,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2025-02-06 10:28:40,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 28 treesize of output 12 [2025-02-06 10:28:40,715 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 16 treesize of output 8 [2025-02-06 10:28:40,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:28:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:40,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:28:40,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153276844] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:40,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:28:40,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 18 [2025-02-06 10:28:40,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952153092] [2025-02-06 10:28:40,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:40,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:28:40,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:40,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:28:40,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:28:40,735 INFO L87 Difference]: Start difference. First operand 154 states and 176 transitions. Second operand has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:41,015 INFO L93 Difference]: Finished difference Result 159 states and 178 transitions. [2025-02-06 10:28:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 10:28:41,016 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2025-02-06 10:28:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:41,016 INFO L225 Difference]: With dead ends: 159 [2025-02-06 10:28:41,017 INFO L226 Difference]: Without dead ends: 159 [2025-02-06 10:28:41,017 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2025-02-06 10:28:41,017 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 56 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:41,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 500 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:41,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2025-02-06 10:28:41,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 154. [2025-02-06 10:28:41,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 120 states have (on average 1.4083333333333334) internal successors, (169), 149 states have internal predecessors, (169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:41,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2025-02-06 10:28:41,021 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 35 [2025-02-06 10:28:41,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:41,021 INFO L471 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2025-02-06 10:28:41,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.75) internal successors, (33), 12 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:41,021 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2025-02-06 10:28:41,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-06 10:28:41,022 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:41,022 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:41,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 10:28:41,222 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:41,222 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:41,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:41,223 INFO L85 PathProgramCache]: Analyzing trace with hash -644594619, now seen corresponding path program 1 times [2025-02-06 10:28:41,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:41,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437822875] [2025-02-06 10:28:41,223 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:41,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:41,234 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 10:28:41,250 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 10:28:41,250 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:41,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:41,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:41,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:41,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437822875] [2025-02-06 10:28:41,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437822875] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:41,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:41,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-06 10:28:41,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678741984] [2025-02-06 10:28:41,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:41,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:28:41,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:41,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:28:41,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:28:41,521 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:41,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:41,714 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2025-02-06 10:28:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:28:41,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2025-02-06 10:28:41,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:41,715 INFO L225 Difference]: With dead ends: 158 [2025-02-06 10:28:41,715 INFO L226 Difference]: Without dead ends: 158 [2025-02-06 10:28:41,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:28:41,716 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 25 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:41,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 651 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2025-02-06 10:28:41,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2025-02-06 10:28:41,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 122 states have (on average 1.3934426229508197) internal successors, (170), 151 states have internal predecessors, (170), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 176 transitions. [2025-02-06 10:28:41,719 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 176 transitions. Word has length 36 [2025-02-06 10:28:41,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:41,719 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 176 transitions. [2025-02-06 10:28:41,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:41,720 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 176 transitions. [2025-02-06 10:28:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-06 10:28:41,720 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:41,720 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:41,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-02-06 10:28:41,720 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:41,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:41,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1492403288, now seen corresponding path program 1 times [2025-02-06 10:28:41,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:41,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63737416] [2025-02-06 10:28:41,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:41,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:41,732 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 37 statements into 1 equivalence classes. [2025-02-06 10:28:41,739 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 37 of 37 statements. [2025-02-06 10:28:41,740 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:41,740 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:41,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:41,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63737416] [2025-02-06 10:28:41,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63737416] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:41,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:41,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-02-06 10:28:41,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422503141] [2025-02-06 10:28:41,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:41,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:28:41,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:41,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:28:41,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:28:41,989 INFO L87 Difference]: Start difference. First operand 156 states and 176 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:42,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:42,181 INFO L93 Difference]: Finished difference Result 157 states and 175 transitions. [2025-02-06 10:28:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 10:28:42,181 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2025-02-06 10:28:42,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:42,182 INFO L225 Difference]: With dead ends: 157 [2025-02-06 10:28:42,182 INFO L226 Difference]: Without dead ends: 157 [2025-02-06 10:28:42,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:28:42,183 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 40 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:42,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 531 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:42,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-02-06 10:28:42,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 156. [2025-02-06 10:28:42,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 122 states have (on average 1.3852459016393444) internal successors, (169), 151 states have internal predecessors, (169), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:42,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 175 transitions. [2025-02-06 10:28:42,187 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 175 transitions. Word has length 37 [2025-02-06 10:28:42,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:42,187 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 175 transitions. [2025-02-06 10:28:42,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:42,187 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 175 transitions. [2025-02-06 10:28:42,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-06 10:28:42,187 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:42,188 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:42,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-02-06 10:28:42,188 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:42,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash -980138333, now seen corresponding path program 1 times [2025-02-06 10:28:42,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:42,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549717805] [2025-02-06 10:28:42,189 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:42,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:42,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 10:28:42,210 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 10:28:42,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:42,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:42,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:42,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549717805] [2025-02-06 10:28:42,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549717805] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:42,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599260556] [2025-02-06 10:28:42,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:42,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:42,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:42,682 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:42,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 10:28:42,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 10:28:42,873 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 10:28:42,873 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:42,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:42,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 40 conjuncts are in the unsatisfiable core [2025-02-06 10:28:42,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:42,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 10:28:42,932 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-02-06 10:28:42,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-02-06 10:28:42,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2025-02-06 10:28:43,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 23 [2025-02-06 10:28:43,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 18 [2025-02-06 10:28:43,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:43,267 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 35 treesize of output 13 [2025-02-06 10:28:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:43,271 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:28:43,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599260556] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:43,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:28:43,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 25 [2025-02-06 10:28:43,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758557363] [2025-02-06 10:28:43,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:43,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:28:43,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:43,272 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:28:43,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2025-02-06 10:28:43,273 INFO L87 Difference]: Start difference. First operand 156 states and 175 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:43,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:43,581 INFO L93 Difference]: Finished difference Result 156 states and 174 transitions. [2025-02-06 10:28:43,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:28:43,582 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2025-02-06 10:28:43,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:43,582 INFO L225 Difference]: With dead ends: 156 [2025-02-06 10:28:43,582 INFO L226 Difference]: Without dead ends: 156 [2025-02-06 10:28:43,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2025-02-06 10:28:43,583 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 17 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:43,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 442 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:28:43,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-02-06 10:28:43,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2025-02-06 10:28:43,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 122 states have (on average 1.3770491803278688) internal successors, (168), 151 states have internal predecessors, (168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 174 transitions. [2025-02-06 10:28:43,591 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 174 transitions. Word has length 38 [2025-02-06 10:28:43,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:43,592 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 174 transitions. [2025-02-06 10:28:43,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:43,592 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 174 transitions. [2025-02-06 10:28:43,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-02-06 10:28:43,592 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:43,592 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:43,601 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 10:28:43,793 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 [2025-02-06 10:28:43,793 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:43,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:43,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1315100416, now seen corresponding path program 1 times [2025-02-06 10:28:43,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:43,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989715492] [2025-02-06 10:28:43,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:43,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:43,802 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-02-06 10:28:43,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-02-06 10:28:43,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:43,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:44,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:44,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:44,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989715492] [2025-02-06 10:28:44,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989715492] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:44,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:44,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2025-02-06 10:28:44,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696603049] [2025-02-06 10:28:44,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:44,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 10:28:44,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:44,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 10:28:44,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:28:44,162 INFO L87 Difference]: Start difference. First operand 156 states and 174 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:44,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:44,506 INFO L93 Difference]: Finished difference Result 156 states and 173 transitions. [2025-02-06 10:28:44,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 10:28:44,506 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2025-02-06 10:28:44,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:44,507 INFO L225 Difference]: With dead ends: 156 [2025-02-06 10:28:44,507 INFO L226 Difference]: Without dead ends: 156 [2025-02-06 10:28:44,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:28:44,508 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 43 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:44,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 626 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:28:44,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2025-02-06 10:28:44,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2025-02-06 10:28:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 122 states have (on average 1.3688524590163935) internal successors, (167), 151 states have internal predecessors, (167), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 173 transitions. [2025-02-06 10:28:44,514 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 173 transitions. Word has length 40 [2025-02-06 10:28:44,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:44,514 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 173 transitions. [2025-02-06 10:28:44,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:44,514 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 173 transitions. [2025-02-06 10:28:44,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-02-06 10:28:44,515 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:44,515 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:44,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-02-06 10:28:44,515 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:44,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:44,515 INFO L85 PathProgramCache]: Analyzing trace with hash 2141997107, now seen corresponding path program 1 times [2025-02-06 10:28:44,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:44,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228855728] [2025-02-06 10:28:44,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:44,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:44,532 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-06 10:28:44,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 10:28:44,538 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:44,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:44,796 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:44,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:44,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228855728] [2025-02-06 10:28:44,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228855728] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:44,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353710599] [2025-02-06 10:28:44,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:44,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:44,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:44,799 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) [2025-02-06 10:28:44,800 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 [2025-02-06 10:28:44,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-02-06 10:28:44,963 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-02-06 10:28:44,963 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:44,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:44,966 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 10:28:44,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:28:45,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:28:45,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:45,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 23 [2025-02-06 10:28:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:28:45,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353710599] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:28:45,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:28:45,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 19 [2025-02-06 10:28:45,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008091944] [2025-02-06 10:28:45,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:28:45,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 10:28:45,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:45,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 10:28:45,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2025-02-06 10:28:45,318 INFO L87 Difference]: Start difference. First operand 156 states and 173 transitions. Second operand has 20 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-06 10:28:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:45,482 INFO L93 Difference]: Finished difference Result 159 states and 172 transitions. [2025-02-06 10:28:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 10:28:45,482 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2025-02-06 10:28:45,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:45,483 INFO L225 Difference]: With dead ends: 159 [2025-02-06 10:28:45,483 INFO L226 Difference]: Without dead ends: 159 [2025-02-06 10:28:45,483 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2025-02-06 10:28:45,484 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 51 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:45,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 603 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2025-02-06 10:28:45,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 156. [2025-02-06 10:28:45,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 122 states have (on average 1.3442622950819672) internal successors, (164), 151 states have internal predecessors, (164), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 170 transitions. [2025-02-06 10:28:45,488 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 170 transitions. Word has length 44 [2025-02-06 10:28:45,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:45,488 INFO L471 AbstractCegarLoop]: Abstraction has 156 states and 170 transitions. [2025-02-06 10:28:45,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.052631578947368) internal successors, (96), 19 states have internal predecessors, (96), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-06 10:28:45,488 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 170 transitions. [2025-02-06 10:28:45,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2025-02-06 10:28:45,489 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:45,489 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:45,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 10:28:45,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:45,694 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:45,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:45,694 INFO L85 PathProgramCache]: Analyzing trace with hash 535170067, now seen corresponding path program 1 times [2025-02-06 10:28:45,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:45,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573800943] [2025-02-06 10:28:45,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:45,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:45,705 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 43 statements into 1 equivalence classes. [2025-02-06 10:28:45,710 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 43 of 43 statements. [2025-02-06 10:28:45,710 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:45,710 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:45,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:45,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573800943] [2025-02-06 10:28:45,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573800943] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:28:45,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:28:45,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:28:45,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805951398] [2025-02-06 10:28:45,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:28:45,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:28:45,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:45,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:28:45,805 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:28:45,805 INFO L87 Difference]: Start difference. First operand 156 states and 170 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:45,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:45,936 INFO L93 Difference]: Finished difference Result 161 states and 177 transitions. [2025-02-06 10:28:45,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:28:45,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2025-02-06 10:28:45,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:45,937 INFO L225 Difference]: With dead ends: 161 [2025-02-06 10:28:45,937 INFO L226 Difference]: Without dead ends: 161 [2025-02-06 10:28:45,938 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:28:45,938 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 37 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:45,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 455 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:28:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-02-06 10:28:45,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2025-02-06 10:28:45,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.3571428571428572) internal successors, (171), 155 states have internal predecessors, (171), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:45,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 177 transitions. [2025-02-06 10:28:45,942 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 177 transitions. Word has length 43 [2025-02-06 10:28:45,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:45,942 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 177 transitions. [2025-02-06 10:28:45,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:28:45,942 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 177 transitions. [2025-02-06 10:28:45,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-02-06 10:28:45,942 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:45,942 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:45,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2025-02-06 10:28:45,943 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:45,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:45,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1977400869, now seen corresponding path program 1 times [2025-02-06 10:28:45,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:45,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393472286] [2025-02-06 10:28:45,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:45,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:45,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-06 10:28:45,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 10:28:45,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:45,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:46,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:46,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393472286] [2025-02-06 10:28:46,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393472286] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:46,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996384887] [2025-02-06 10:28:46,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:46,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:46,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:46,313 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:46,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 10:28:46,469 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-02-06 10:28:46,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-02-06 10:28:46,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:46,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:46,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 38 conjuncts are in the unsatisfiable core [2025-02-06 10:28:46,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:46,657 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:28:46,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2025-02-06 10:28:46,672 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:28:46,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-02-06 10:28:46,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2025-02-06 10:28:46,783 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 10:28:46,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2025-02-06 10:28:46,797 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 10 treesize of output 4 [2025-02-06 10:28:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:46,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:28:47,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996384887] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:47,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:28:47,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2025-02-06 10:28:47,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997219099] [2025-02-06 10:28:47,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:28:47,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 10:28:47,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:47,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 10:28:47,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2025-02-06 10:28:47,035 INFO L87 Difference]: Start difference. First operand 160 states and 177 transitions. Second operand has 26 states, 25 states have (on average 3.08) internal successors, (77), 23 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 10:28:47,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:47,422 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2025-02-06 10:28:47,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 10:28:47,422 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.08) internal successors, (77), 23 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2025-02-06 10:28:47,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:47,423 INFO L225 Difference]: With dead ends: 168 [2025-02-06 10:28:47,423 INFO L226 Difference]: Without dead ends: 168 [2025-02-06 10:28:47,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 10:28:47,423 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 55 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:47,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 952 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:28:47,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2025-02-06 10:28:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 160. [2025-02-06 10:28:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 126 states have (on average 1.3333333333333333) internal successors, (168), 155 states have internal predecessors, (168), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2025-02-06 10:28:47,427 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 45 [2025-02-06 10:28:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:47,427 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2025-02-06 10:28:47,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.08) internal successors, (77), 23 states have internal predecessors, (77), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 10:28:47,427 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2025-02-06 10:28:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-06 10:28:47,428 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:47,428 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1] [2025-02-06 10:28:47,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 10:28:47,628 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,SelfDestructingSolverStorable35 [2025-02-06 10:28:47,629 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:47,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:47,629 INFO L85 PathProgramCache]: Analyzing trace with hash -982707950, now seen corresponding path program 1 times [2025-02-06 10:28:47,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:47,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889829161] [2025-02-06 10:28:47,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:47,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:47,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-06 10:28:47,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 10:28:47,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:47,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:48,095 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 10:28:48,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:48,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889829161] [2025-02-06 10:28:48,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889829161] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:48,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510529652] [2025-02-06 10:28:48,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:48,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:48,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:48,097 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:48,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 10:28:48,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-06 10:28:48,275 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 10:28:48,275 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:48,275 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:48,276 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-06 10:28:48,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:48,314 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:28:48,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-02-06 10:28:48,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2025-02-06 10:28:48,362 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 10:28:48,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-02-06 10:28:48,396 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 10:28:48,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-02-06 10:28:48,430 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 10:28:48,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 41 [2025-02-06 10:28:48,441 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 31 treesize of output 13 [2025-02-06 10:28:48,453 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2025-02-06 10:28:48,474 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-02-06 10:28:48,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-02-06 10:28:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 5 not checked. [2025-02-06 10:28:48,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:28:48,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510529652] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:48,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:28:48,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 23 [2025-02-06 10:28:48,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932667918] [2025-02-06 10:28:48,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:28:48,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 10:28:48,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:48,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 10:28:48,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=482, Unknown=1, NotChecked=44, Total=600 [2025-02-06 10:28:48,522 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand has 24 states, 23 states have (on average 2.608695652173913) internal successors, (60), 21 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 10:28:48,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:48,867 INFO L93 Difference]: Finished difference Result 157 states and 171 transitions. [2025-02-06 10:28:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:28:48,868 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.608695652173913) internal successors, (60), 21 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2025-02-06 10:28:48,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:48,868 INFO L225 Difference]: With dead ends: 157 [2025-02-06 10:28:48,868 INFO L226 Difference]: Without dead ends: 157 [2025-02-06 10:28:48,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=805, Unknown=1, NotChecked=58, Total=992 [2025-02-06 10:28:48,869 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 17 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:48,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 661 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 540 Invalid, 0 Unknown, 84 Unchecked, 0.2s Time] [2025-02-06 10:28:48,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2025-02-06 10:28:48,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2025-02-06 10:28:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 126 states have (on average 1.3095238095238095) internal successors, (165), 152 states have internal predecessors, (165), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 171 transitions. [2025-02-06 10:28:48,872 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 171 transitions. Word has length 48 [2025-02-06 10:28:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:48,872 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 171 transitions. [2025-02-06 10:28:48,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.608695652173913) internal successors, (60), 21 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 5 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2025-02-06 10:28:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 171 transitions. [2025-02-06 10:28:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2025-02-06 10:28:48,873 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:48,873 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1] [2025-02-06 10:28:48,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 10:28:49,073 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,SelfDestructingSolverStorable36 [2025-02-06 10:28:49,073 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:49,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:49,074 INFO L85 PathProgramCache]: Analyzing trace with hash -982707949, now seen corresponding path program 1 times [2025-02-06 10:28:49,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:49,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112743356] [2025-02-06 10:28:49,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:49,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:49,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-06 10:28:49,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 10:28:49,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:49,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:49,686 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:49,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:49,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112743356] [2025-02-06 10:28:49,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112743356] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:49,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816704832] [2025-02-06 10:28:49,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:49,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:49,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:49,691 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:49,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 10:28:49,857 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 48 statements into 1 equivalence classes. [2025-02-06 10:28:49,901 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 48 of 48 statements. [2025-02-06 10:28:49,901 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:49,901 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:49,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 54 conjuncts are in the unsatisfiable core [2025-02-06 10:28:49,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:49,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-06 10:28:49,967 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:28:49,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-02-06 10:28:49,987 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 [2025-02-06 10:28:49,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2025-02-06 10:28:50,052 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 10:28:50,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-02-06 10:28:50,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-02-06 10:28:50,125 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 10:28:50,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-02-06 10:28:50,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-02-06 10:28:50,204 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2025-02-06 10:28:50,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 66 [2025-02-06 10:28:50,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2025-02-06 10:28:50,233 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 42 treesize of output 18 [2025-02-06 10:28:50,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-06 10:28:50,355 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2025-02-06 10:28:50,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:28:50,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:28:50,383 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:28:50,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2025-02-06 10:28:50,411 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2025-02-06 10:28:50,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:28:50,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816704832] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:50,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:28:50,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2025-02-06 10:28:50,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898288486] [2025-02-06 10:28:50,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:28:50,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-06 10:28:50,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:50,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-06 10:28:50,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=842, Unknown=1, NotChecked=58, Total=992 [2025-02-06 10:28:50,528 INFO L87 Difference]: Start difference. First operand 157 states and 171 transitions. Second operand has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 24 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-06 10:28:51,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:51,277 INFO L93 Difference]: Finished difference Result 152 states and 166 transitions. [2025-02-06 10:28:51,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 10:28:51,277 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 24 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 48 [2025-02-06 10:28:51,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:51,278 INFO L225 Difference]: With dead ends: 152 [2025-02-06 10:28:51,278 INFO L226 Difference]: Without dead ends: 152 [2025-02-06 10:28:51,279 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=1821, Unknown=1, NotChecked=88, Total=2162 [2025-02-06 10:28:51,279 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 51 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:51,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 891 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 801 Invalid, 0 Unknown, 98 Unchecked, 0.4s Time] [2025-02-06 10:28:51,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2025-02-06 10:28:51,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2025-02-06 10:28:51,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 126 states have (on average 1.2698412698412698) internal successors, (160), 147 states have internal predecessors, (160), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:51,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2025-02-06 10:28:51,283 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 48 [2025-02-06 10:28:51,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:51,283 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2025-02-06 10:28:51,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 24 states have internal predecessors, (68), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2025-02-06 10:28:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2025-02-06 10:28:51,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2025-02-06 10:28:51,284 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:51,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:51,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 10:28:51,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:51,484 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:51,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 332846681, now seen corresponding path program 1 times [2025-02-06 10:28:51,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:51,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586786800] [2025-02-06 10:28:51,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:51,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:51,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 10:28:51,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 10:28:51,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:51,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:52,262 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:52,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:52,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586786800] [2025-02-06 10:28:52,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586786800] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:52,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462818869] [2025-02-06 10:28:52,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:52,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:52,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:52,265 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:52,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 10:28:52,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 46 statements into 1 equivalence classes. [2025-02-06 10:28:52,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 46 of 46 statements. [2025-02-06 10:28:52,477 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:52,477 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:52,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 90 conjuncts are in the unsatisfiable core [2025-02-06 10:28:52,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:52,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 10:28:52,518 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 [2025-02-06 10:28:52,521 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 [2025-02-06 10:28:52,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2025-02-06 10:28:52,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2025-02-06 10:28:52,634 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:28:52,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2025-02-06 10:28:52,680 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:28:52,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2025-02-06 10:28:52,701 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:28:52,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 20 [2025-02-06 10:28:52,766 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:52,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 19 [2025-02-06 10:28:52,840 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:28:52,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 25 [2025-02-06 10:28:52,851 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:28:52,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2025-02-06 10:28:52,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2025-02-06 10:28:52,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2025-02-06 10:28:52,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 40 [2025-02-06 10:28:52,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 34 [2025-02-06 10:28:53,254 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 10 treesize of output 9 [2025-02-06 10:28:53,294 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2025-02-06 10:28:53,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 15 [2025-02-06 10:28:53,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:28:53,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:53,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 48 treesize of output 66 [2025-02-06 10:28:53,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:53,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 26 [2025-02-06 10:28:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:53,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:28:53,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2025-02-06 10:28:54,769 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_create_#t~ret4#1.offset| 24))) (and (forall ((|v_ULTIMATE.start_create_~data2~0#1.base_15| Int) (v_ArrVal_2659 (Array Int Int)) (v_ArrVal_2658 (Array Int Int)) (|v_ULTIMATE.start_create_~data1~0#1.base_15| Int) (v_ArrVal_2657 Int)) (or (forall ((v_ArrVal_2664 Int) (v_ArrVal_2661 (Array Int Int)) (v_ArrVal_2668 Int)) (= (select (store (store (select (store (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2659) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2661) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| v_ArrVal_2664) .cse0 v_ArrVal_2668) 8) 0)) (forall ((v_ArrVal_2660 (Array Int Int)) (v_ArrVal_2666 Int)) (= |c_ULTIMATE.start_create_#t~ret4#1.base| (select (store (store (select (store (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2658) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2660) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| |v_ULTIMATE.start_create_~data1~0#1.base_15|) .cse0 v_ArrVal_2666) 0))) (not (= (select (store |c_#valid| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2657) |v_ULTIMATE.start_create_~data2~0#1.base_15|) 0)))) (forall ((|v_ULTIMATE.start_create_~data2~0#1.base_15| Int) (v_ArrVal_2658 (Array Int Int)) (|v_ULTIMATE.start_create_~data1~0#1.base_15| Int) (v_ArrVal_2657 Int)) (or (forall ((v_ArrVal_2660 (Array Int Int)) (v_ArrVal_2666 Int)) (let ((.cse1 (store (store (select (store (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2658) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2660) |c_ULTIMATE.start_create_#t~ret4#1.base|) |c_ULTIMATE.start_create_#t~ret4#1.offset| |v_ULTIMATE.start_create_~data1~0#1.base_15|) .cse0 v_ArrVal_2666))) (or (= (select .cse1 8) 0) (= |c_ULTIMATE.start_create_#t~ret4#1.base| (select .cse1 0))))) (not (= (select (store |c_#valid| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2657) |v_ULTIMATE.start_create_~data2~0#1.base_15|) 0)))))) is different from false [2025-02-06 10:28:54,886 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_alloc_and_zero_#res.offset| 24))) (and (forall ((|v_ULTIMATE.start_create_~data2~0#1.base_15| Int) (v_ArrVal_2659 (Array Int Int)) (v_ArrVal_2658 (Array Int Int)) (|v_ULTIMATE.start_create_~data1~0#1.base_15| Int) (v_ArrVal_2657 Int)) (or (forall ((v_ArrVal_2660 (Array Int Int)) (v_ArrVal_2666 Int)) (= (select (store (store (select (store (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2658) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2660) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| |v_ULTIMATE.start_create_~data1~0#1.base_15|) .cse0 v_ArrVal_2666) 0) |c_alloc_and_zero_#res.base|)) (not (= (select (store |c_#valid| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2657) |v_ULTIMATE.start_create_~data2~0#1.base_15|) 0)) (forall ((v_ArrVal_2664 Int) (v_ArrVal_2661 (Array Int Int)) (v_ArrVal_2668 Int)) (= (select (store (store (select (store (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2659) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2661) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| v_ArrVal_2664) .cse0 v_ArrVal_2668) 8) 0)))) (forall ((|v_ULTIMATE.start_create_~data2~0#1.base_15| Int) (v_ArrVal_2658 (Array Int Int)) (|v_ULTIMATE.start_create_~data1~0#1.base_15| Int) (v_ArrVal_2657 Int)) (or (forall ((v_ArrVal_2660 (Array Int Int)) (v_ArrVal_2666 Int)) (let ((.cse1 (store (store (select (store (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2658) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2660) |c_alloc_and_zero_#res.base|) |c_alloc_and_zero_#res.offset| |v_ULTIMATE.start_create_~data1~0#1.base_15|) .cse0 v_ArrVal_2666))) (or (= (select .cse1 0) |c_alloc_and_zero_#res.base|) (= (select .cse1 8) 0)))) (not (= (select (store |c_#valid| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2657) |v_ULTIMATE.start_create_~data2~0#1.base_15|) 0)))))) is different from false [2025-02-06 10:28:54,931 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_alloc_and_zero_~pi~0.offset 24))) (and (forall ((|v_ULTIMATE.start_create_~data2~0#1.base_15| Int) (v_ArrVal_2659 (Array Int Int)) (v_ArrVal_2658 (Array Int Int)) (|v_ULTIMATE.start_create_~data1~0#1.base_15| Int) (v_ArrVal_2657 Int)) (or (forall ((v_ArrVal_2664 Int) (v_ArrVal_2661 (Array Int Int)) (v_ArrVal_2668 Int)) (= (select (store (store (select (store (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2659) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2661) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset v_ArrVal_2664) .cse0 v_ArrVal_2668) 8) 0)) (not (= (select (store |c_#valid| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2657) |v_ULTIMATE.start_create_~data2~0#1.base_15|) 0)) (forall ((v_ArrVal_2660 (Array Int Int)) (v_ArrVal_2666 Int)) (= (select (store (store (select (store (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2658) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2660) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset |v_ULTIMATE.start_create_~data1~0#1.base_15|) .cse0 v_ArrVal_2666) 0) c_alloc_and_zero_~pi~0.base)))) (forall ((|v_ULTIMATE.start_create_~data2~0#1.base_15| Int) (v_ArrVal_2658 (Array Int Int)) (|v_ULTIMATE.start_create_~data1~0#1.base_15| Int) (v_ArrVal_2657 Int)) (or (forall ((v_ArrVal_2660 (Array Int Int)) (v_ArrVal_2666 Int)) (let ((.cse1 (store (store (select (store (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2658) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2660) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset |v_ULTIMATE.start_create_~data1~0#1.base_15|) .cse0 v_ArrVal_2666))) (or (= (select .cse1 0) c_alloc_and_zero_~pi~0.base) (= (select .cse1 8) 0)))) (not (= (select (store |c_#valid| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2657) |v_ULTIMATE.start_create_~data2~0#1.base_15|) 0)))))) is different from false [2025-02-06 10:28:54,955 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_alloc_and_zero_~pi~0.offset 16))) (let ((.cse0 (store |c_#memory_$Pointer$#0.base| c_alloc_and_zero_~pi~0.base (store (select |c_#memory_$Pointer$#0.base| c_alloc_and_zero_~pi~0.base) .cse2 0))) (.cse1 (+ c_alloc_and_zero_~pi~0.offset 24))) (and (forall ((|v_ULTIMATE.start_create_~data2~0#1.base_15| Int) (v_ArrVal_2659 (Array Int Int)) (v_ArrVal_2658 (Array Int Int)) (v_ArrVal_2656 Int) (|v_ULTIMATE.start_create_~data1~0#1.base_15| Int) (v_ArrVal_2657 Int)) (or (forall ((v_ArrVal_2660 (Array Int Int)) (v_ArrVal_2666 Int)) (= (select (store (store (select (store (store .cse0 |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2658) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2660) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset |v_ULTIMATE.start_create_~data1~0#1.base_15|) .cse1 v_ArrVal_2666) 0) c_alloc_and_zero_~pi~0.base)) (forall ((v_ArrVal_2664 Int) (v_ArrVal_2661 (Array Int Int)) (v_ArrVal_2668 Int)) (= (select (store (store (select (store (store (store |c_#memory_$Pointer$#0.offset| c_alloc_and_zero_~pi~0.base (store (select |c_#memory_$Pointer$#0.offset| c_alloc_and_zero_~pi~0.base) .cse2 v_ArrVal_2656)) |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2659) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2661) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset v_ArrVal_2664) .cse1 v_ArrVal_2668) 8) 0)) (not (= (select (store |c_#valid| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2657) |v_ULTIMATE.start_create_~data2~0#1.base_15|) 0)))) (forall ((|v_ULTIMATE.start_create_~data2~0#1.base_15| Int) (v_ArrVal_2658 (Array Int Int)) (|v_ULTIMATE.start_create_~data1~0#1.base_15| Int) (v_ArrVal_2657 Int)) (or (forall ((v_ArrVal_2660 (Array Int Int)) (v_ArrVal_2666 Int)) (let ((.cse3 (store (store (select (store (store .cse0 |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2658) |v_ULTIMATE.start_create_~data2~0#1.base_15| v_ArrVal_2660) c_alloc_and_zero_~pi~0.base) c_alloc_and_zero_~pi~0.offset |v_ULTIMATE.start_create_~data1~0#1.base_15|) .cse1 v_ArrVal_2666))) (or (= (select .cse3 0) c_alloc_and_zero_~pi~0.base) (= (select .cse3 8) 0)))) (not (= (select (store |c_#valid| |v_ULTIMATE.start_create_~data1~0#1.base_15| v_ArrVal_2657) |v_ULTIMATE.start_create_~data2~0#1.base_15|) 0))))))) is different from false [2025-02-06 10:28:54,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:54,970 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 1 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 63 [2025-02-06 10:28:54,973 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 375 treesize of output 363 [2025-02-06 10:28:55,063 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:55,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 235 treesize of output 259 [2025-02-06 10:28:55,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 244 [2025-02-06 10:28:55,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 353 treesize of output 341 [2025-02-06 10:28:55,499 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:55,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 42 [2025-02-06 10:28:55,508 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 94 treesize of output 90 [2025-02-06 10:28:55,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:55,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 42 [2025-02-06 10:28:55,528 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 104 treesize of output 98 [2025-02-06 10:28:55,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:55,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 89 treesize of output 91 [2025-02-06 10:28:55,572 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 180 treesize of output 176 [2025-02-06 10:28:55,587 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 137 treesize of output 133 [2025-02-06 10:28:55,616 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:55,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 155 treesize of output 163 [2025-02-06 10:28:55,635 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 99 treesize of output 97 [2025-02-06 10:28:55,650 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 298 treesize of output 290 [2025-02-06 10:28:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:28:56,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462818869] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:28:56,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:28:56,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 23, 23] total 55 [2025-02-06 10:28:56,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354943149] [2025-02-06 10:28:56,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:28:56,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2025-02-06 10:28:56,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:28:56,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2025-02-06 10:28:56,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2350, Unknown=29, NotChecked=404, Total=2970 [2025-02-06 10:28:56,353 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 52 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:28:57,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:28:57,499 INFO L93 Difference]: Finished difference Result 155 states and 169 transitions. [2025-02-06 10:28:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 10:28:57,500 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 52 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2025-02-06 10:28:57,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:28:57,501 INFO L225 Difference]: With dead ends: 155 [2025-02-06 10:28:57,501 INFO L226 Difference]: Without dead ends: 155 [2025-02-06 10:28:57,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 57 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 807 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=313, Invalid=3455, Unknown=30, NotChecked=492, Total=4290 [2025-02-06 10:28:57,502 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 49 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 288 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:28:57,502 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1316 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1091 Invalid, 0 Unknown, 288 Unchecked, 0.7s Time] [2025-02-06 10:28:57,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2025-02-06 10:28:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2025-02-06 10:28:57,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 129 states have (on average 1.2635658914728682) internal successors, (163), 150 states have internal predecessors, (163), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:28:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 169 transitions. [2025-02-06 10:28:57,506 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 169 transitions. Word has length 46 [2025-02-06 10:28:57,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:28:57,506 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 169 transitions. [2025-02-06 10:28:57,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.1818181818181817) internal successors, (120), 52 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:28:57,507 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 169 transitions. [2025-02-06 10:28:57,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-06 10:28:57,507 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:28:57,507 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:28:57,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 10:28:57,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-06 10:28:57,708 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2025-02-06 10:28:57,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:28:57,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1728313211, now seen corresponding path program 1 times [2025-02-06 10:28:57,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:28:57,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888868677] [2025-02-06 10:28:57,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:57,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:28:57,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-06 10:28:57,743 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-06 10:28:57,743 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:57,743 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:28:59,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:28:59,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888868677] [2025-02-06 10:28:59,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888868677] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:28:59,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300152490] [2025-02-06 10:28:59,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:28:59,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:28:59,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:28:59,169 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:28:59,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 10:28:59,357 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-02-06 10:28:59,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-02-06 10:28:59,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:28:59,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:28:59,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 78 conjuncts are in the unsatisfiable core [2025-02-06 10:28:59,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:28:59,464 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2025-02-06 10:28:59,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 27 [2025-02-06 10:28:59,524 INFO L349 Elim1Store]: treesize reduction 44, result has 20.0 percent of original size [2025-02-06 10:28:59,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 37 [2025-02-06 10:28:59,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 10:28:59,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2025-02-06 10:28:59,844 INFO L349 Elim1Store]: treesize reduction 92, result has 17.1 percent of original size [2025-02-06 10:28:59,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 80 [2025-02-06 10:28:59,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:28:59,916 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:28:59,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 54