./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-read.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-read.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9aaf3ef5b6218ff6658a67703b1e3ffb0d16a40e5e7c9a13354b853d6f63747b --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:21:34,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:21:34,430 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:21:34,433 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:21:34,434 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:21:34,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:21:34,448 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:21:34,448 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:21:34,448 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:21:34,448 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:21:34,448 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:21:34,448 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:21:34,449 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:21:34,449 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:21:34,449 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:21:34,449 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:21:34,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:21:34,450 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9aaf3ef5b6218ff6658a67703b1e3ffb0d16a40e5e7c9a13354b853d6f63747b [2025-02-06 10:21:34,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:21:34,648 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:21:34,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:21:34,650 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:21:34,650 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:21:34,651 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-read.c [2025-02-06 10:21:35,783 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bfda2537d/d72d8de66fdb4da7b603f472dd8e8379/FLAGf93b56abb [2025-02-06 10:21:36,021 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:21:36,022 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysWithLenghtAtDeclaration_-read.c [2025-02-06 10:21:36,031 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bfda2537d/d72d8de66fdb4da7b603f472dd8e8379/FLAGf93b56abb [2025-02-06 10:21:36,377 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/bfda2537d/d72d8de66fdb4da7b603f472dd8e8379 [2025-02-06 10:21:36,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:21:36,384 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:21:36,389 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:21:36,389 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:21:36,392 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:21:36,392 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,393 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60592373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36, skipping insertion in model container [2025-02-06 10:21:36,393 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,402 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:21:36,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:21:36,502 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:21:36,514 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:21:36,523 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:21:36,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36 WrapperNode [2025-02-06 10:21:36,524 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:21:36,525 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:21:36,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:21:36,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:21:36,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,544 INFO L138 Inliner]: procedures = 8, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57 [2025-02-06 10:21:36,544 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:21:36,545 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:21:36,545 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:21:36,545 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:21:36,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,551 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,558 INFO L175 MemorySlicer]: Split 3 memory accesses to 2 slices as follows [2, 1]. 67 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 1 writes are split as follows [1, 0]. [2025-02-06 10:21:36,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,562 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:21:36,565 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:21:36,565 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:21:36,565 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:21:36,566 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (1/1) ... [2025-02-06 10:21:36,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:21:36,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:36,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 10:21:36,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 10:21:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 10:21:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 10:21:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:21:36,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:21:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 10:21:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 10:21:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 10:21:36,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:21:36,658 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:21:36,659 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:21:36,763 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L24: call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#mask~0#1.base, main_~#mask~0#1.offset);havoc main_~#mask~0#1.base, main_~#mask~0#1.offset; [2025-02-06 10:21:36,770 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2025-02-06 10:21:36,770 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:21:36,776 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:21:36,776 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:21:36,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:21:36 BoogieIcfgContainer [2025-02-06 10:21:36,777 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:21:36,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:21:36,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:21:36,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:21:36,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:21:36" (1/3) ... [2025-02-06 10:21:36,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a82ee13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:21:36, skipping insertion in model container [2025-02-06 10:21:36,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:36" (2/3) ... [2025-02-06 10:21:36,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a82ee13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:21:36, skipping insertion in model container [2025-02-06 10:21:36,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:21:36" (3/3) ... [2025-02-06 10:21:36,784 INFO L128 eAbstractionObserver]: Analyzing ICFG ArraysWithLenghtAtDeclaration_-read.c [2025-02-06 10:21:36,794 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:21:36,795 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ArraysWithLenghtAtDeclaration_-read.c that has 1 procedures, 25 locations, 1 initial locations, 3 loop locations, and 8 error locations. [2025-02-06 10:21:36,819 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:21:36,827 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;@138f557d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:21:36,827 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2025-02-06 10:21:36,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.75) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:36,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 10:21:36,833 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:36,833 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 10:21:36,834 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:36,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:36,837 INFO L85 PathProgramCache]: Analyzing trace with hash 59135101, now seen corresponding path program 1 times [2025-02-06 10:21:36,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:36,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891493264] [2025-02-06 10:21:36,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:36,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:36,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 10:21:36,903 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 10:21:36,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:36,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:36,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:36,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:36,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891493264] [2025-02-06 10:21:36,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891493264] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:36,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:36,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:21:36,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693884401] [2025-02-06 10:21:36,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:36,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:21:36,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:37,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:21:37,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:37,002 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.75) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:37,038 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2025-02-06 10:21:37,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:37,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-06 10:21:37,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:37,044 INFO L225 Difference]: With dead ends: 30 [2025-02-06 10:21:37,044 INFO L226 Difference]: Without dead ends: 28 [2025-02-06 10:21:37,045 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:37,051 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:37,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 41 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:37,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-02-06 10:21:37,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2025-02-06 10:21:37,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2025-02-06 10:21:37,078 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 5 [2025-02-06 10:21:37,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:37,078 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2025-02-06 10:21:37,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,078 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2025-02-06 10:21:37,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 10:21:37,078 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:37,078 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 10:21:37,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:21:37,078 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:37,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:37,079 INFO L85 PathProgramCache]: Analyzing trace with hash 59119884, now seen corresponding path program 1 times [2025-02-06 10:21:37,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:37,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462926628] [2025-02-06 10:21:37,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:37,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:37,085 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 10:21:37,094 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 10:21:37,094 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:37,094 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:37,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462926628] [2025-02-06 10:21:37,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462926628] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:37,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:37,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:37,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100328078] [2025-02-06 10:21:37,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:37,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:21:37,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:37,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:21:37,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:37,152 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:37,177 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2025-02-06 10:21:37,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:37,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-06 10:21:37,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:37,177 INFO L225 Difference]: With dead ends: 43 [2025-02-06 10:21:37,177 INFO L226 Difference]: Without dead ends: 43 [2025-02-06 10:21:37,178 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:37,178 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:37,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 31 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-06 10:21:37,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 27. [2025-02-06 10:21:37,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.631578947368421) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-02-06 10:21:37,181 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 5 [2025-02-06 10:21:37,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:37,182 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-02-06 10:21:37,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,182 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-02-06 10:21:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 10:21:37,182 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:37,182 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 10:21:37,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:21:37,183 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:37,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:37,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1833181174, now seen corresponding path program 1 times [2025-02-06 10:21:37,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:37,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792309626] [2025-02-06 10:21:37,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:37,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:37,190 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 10:21:37,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 10:21:37,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:37,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:37,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792309626] [2025-02-06 10:21:37,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792309626] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:37,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:37,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:21:37,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535318022] [2025-02-06 10:21:37,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:37,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:37,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:37,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:37,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:37,277 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:37,331 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2025-02-06 10:21:37,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:37,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 10:21:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:37,332 INFO L225 Difference]: With dead ends: 46 [2025-02-06 10:21:37,332 INFO L226 Difference]: Without dead ends: 46 [2025-02-06 10:21:37,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:37,333 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:37,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 35 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:37,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-06 10:21:37,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2025-02-06 10:21:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.6) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2025-02-06 10:21:37,336 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2025-02-06 10:21:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:37,336 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2025-02-06 10:21:37,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2025-02-06 10:21:37,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 10:21:37,336 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:37,336 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 10:21:37,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 10:21:37,337 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:37,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:37,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1833188125, now seen corresponding path program 1 times [2025-02-06 10:21:37,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:37,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937297597] [2025-02-06 10:21:37,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:37,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:37,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 10:21:37,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 10:21:37,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:37,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:37,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937297597] [2025-02-06 10:21:37,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937297597] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:37,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:37,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:37,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688190469] [2025-02-06 10:21:37,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:37,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:37,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:37,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:37,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:37,422 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:37,450 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2025-02-06 10:21:37,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:37,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 10:21:37,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:37,451 INFO L225 Difference]: With dead ends: 27 [2025-02-06 10:21:37,451 INFO L226 Difference]: Without dead ends: 27 [2025-02-06 10:21:37,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:37,452 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:37,452 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 23 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:37,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-02-06 10:21:37,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-02-06 10:21:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 20 states have (on average 1.55) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2025-02-06 10:21:37,462 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 6 [2025-02-06 10:21:37,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:37,464 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2025-02-06 10:21:37,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,465 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2025-02-06 10:21:37,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 10:21:37,465 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:37,465 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 10:21:37,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 10:21:37,466 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:37,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:37,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1833188126, now seen corresponding path program 1 times [2025-02-06 10:21:37,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:37,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129586813] [2025-02-06 10:21:37,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:37,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:37,475 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 10:21:37,481 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 10:21:37,481 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:37,481 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:37,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129586813] [2025-02-06 10:21:37,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129586813] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:37,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:37,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:37,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680493559] [2025-02-06 10:21:37,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:37,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:37,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:37,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:37,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:37,586 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:37,661 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2025-02-06 10:21:37,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:37,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 10:21:37,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:37,662 INFO L225 Difference]: With dead ends: 29 [2025-02-06 10:21:37,662 INFO L226 Difference]: Without dead ends: 29 [2025-02-06 10:21:37,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:37,663 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 25 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:37,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 24 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:37,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2025-02-06 10:21:37,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2025-02-06 10:21:37,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2025-02-06 10:21:37,668 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2025-02-06 10:21:37,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:37,668 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2025-02-06 10:21:37,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2025-02-06 10:21:37,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 10:21:37,669 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:37,670 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:37,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 10:21:37,670 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:37,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:37,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1998256474, now seen corresponding path program 1 times [2025-02-06 10:21:37,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:37,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627676967] [2025-02-06 10:21:37,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:37,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:37,682 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 10:21:37,685 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 10:21:37,685 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:37,685 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:37,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627676967] [2025-02-06 10:21:37,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627676967] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:37,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640546778] [2025-02-06 10:21:37,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:37,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:37,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:37,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:37,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 10:21:37,765 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 10:21:37,775 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 10:21:37,775 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:37,775 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 10:21:37,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:37,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,809 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:37,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640546778] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:37,850 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:37,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-02-06 10:21:37,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113860888] [2025-02-06 10:21:37,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:37,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:21:37,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:37,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:21:37,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:21:37,852 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:37,901 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2025-02-06 10:21:37,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:21:37,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-06 10:21:37,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:37,903 INFO L225 Difference]: With dead ends: 39 [2025-02-06 10:21:37,903 INFO L226 Difference]: Without dead ends: 39 [2025-02-06 10:21:37,903 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:21:37,903 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:37,904 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 67 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-02-06 10:21:37,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-02-06 10:21:37,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.5) internal successors, (48), 38 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2025-02-06 10:21:37,906 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 9 [2025-02-06 10:21:37,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:37,906 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2025-02-06 10:21:37,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,906 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2025-02-06 10:21:37,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 10:21:37,907 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:37,907 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:37,914 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 10:21:38,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:38,111 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:38,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:38,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1816401593, now seen corresponding path program 1 times [2025-02-06 10:21:38,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:38,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424736885] [2025-02-06 10:21:38,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:38,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:38,117 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:21:38,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:21:38,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:38,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:38,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:38,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:38,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424736885] [2025-02-06 10:21:38,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424736885] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:38,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942360696] [2025-02-06 10:21:38,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:38,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:38,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:38,165 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:38,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 10:21:38,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:21:38,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:21:38,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:38,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:38,212 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:21:38,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:38,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:38,400 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 10:21:38,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942360696] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:38,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:38,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2025-02-06 10:21:38,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555960229] [2025-02-06 10:21:38,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:38,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 10:21:38,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:38,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 10:21:38,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:21:38,404 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:38,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:38,570 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2025-02-06 10:21:38,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:21:38,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-06 10:21:38,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:38,571 INFO L225 Difference]: With dead ends: 65 [2025-02-06 10:21:38,571 INFO L226 Difference]: Without dead ends: 65 [2025-02-06 10:21:38,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:21:38,572 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 79 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:38,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 39 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:38,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-06 10:21:38,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 38. [2025-02-06 10:21:38,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 37 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:38,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2025-02-06 10:21:38,578 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 10 [2025-02-06 10:21:38,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:38,578 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2025-02-06 10:21:38,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:38,578 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2025-02-06 10:21:38,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 10:21:38,578 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:38,578 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:38,585 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 10:21:38,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:38,779 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:38,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:38,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1816408545, now seen corresponding path program 1 times [2025-02-06 10:21:38,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:38,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764118513] [2025-02-06 10:21:38,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:38,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:38,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:21:38,821 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:21:38,822 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:38,822 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:38,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:38,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764118513] [2025-02-06 10:21:38,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764118513] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643783681] [2025-02-06 10:21:38,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:38,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:38,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:38,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:38,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 10:21:38,928 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:21:38,934 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:21:38,935 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:38,935 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:38,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 10:21:38,936 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:38,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-06 10:21:39,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:39,052 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:39,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:39,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643783681] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:39,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:39,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2025-02-06 10:21:39,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934012272] [2025-02-06 10:21:39,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:39,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:21:39,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:39,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:21:39,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:21:39,114 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:39,232 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2025-02-06 10:21:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:21:39,233 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-06 10:21:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:39,233 INFO L225 Difference]: With dead ends: 39 [2025-02-06 10:21:39,233 INFO L226 Difference]: Without dead ends: 39 [2025-02-06 10:21:39,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:39,234 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:39,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 72 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2025-02-06 10:21:39,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2025-02-06 10:21:39,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.375) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2025-02-06 10:21:39,236 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 10 [2025-02-06 10:21:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:39,236 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2025-02-06 10:21:39,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2025-02-06 10:21:39,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:21:39,236 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:39,236 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:39,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 10:21:39,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:39,441 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:39,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:39,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1762980860, now seen corresponding path program 2 times [2025-02-06 10:21:39,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:39,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451925112] [2025-02-06 10:21:39,442 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:39,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:39,447 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-06 10:21:39,450 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 14 statements. [2025-02-06 10:21:39,450 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:39,450 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:39,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:39,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451925112] [2025-02-06 10:21:39,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451925112] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:39,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:39,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:39,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182942986] [2025-02-06 10:21:39,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:39,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:39,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:39,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:39,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:39,476 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:39,489 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2025-02-06 10:21:39,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:39,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-06 10:21:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:39,489 INFO L225 Difference]: With dead ends: 37 [2025-02-06 10:21:39,490 INFO L226 Difference]: Without dead ends: 37 [2025-02-06 10:21:39,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:39,490 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:39,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 15 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:39,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2025-02-06 10:21:39,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2025-02-06 10:21:39,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.3125) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2025-02-06 10:21:39,492 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 14 [2025-02-06 10:21:39,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:39,492 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2025-02-06 10:21:39,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,492 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2025-02-06 10:21:39,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:21:39,492 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:39,492 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:39,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 10:21:39,493 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:39,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:39,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1762980861, now seen corresponding path program 1 times [2025-02-06 10:21:39,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:39,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998669865] [2025-02-06 10:21:39,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:39,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:39,497 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:21:39,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:21:39,500 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:39,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:39,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:39,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998669865] [2025-02-06 10:21:39,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998669865] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:39,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:39,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:39,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091385330] [2025-02-06 10:21:39,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:39,570 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:39,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:39,571 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:39,571 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:39,571 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:39,589 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2025-02-06 10:21:39,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:39,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-06 10:21:39,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:39,590 INFO L225 Difference]: With dead ends: 61 [2025-02-06 10:21:39,590 INFO L226 Difference]: Without dead ends: 61 [2025-02-06 10:21:39,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:39,590 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 13 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:39,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 26 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:39,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-06 10:21:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 58. [2025-02-06 10:21:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2830188679245282) internal successors, (68), 57 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2025-02-06 10:21:39,593 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 14 [2025-02-06 10:21:39,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:39,593 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2025-02-06 10:21:39,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,593 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2025-02-06 10:21:39,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:21:39,593 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:39,593 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:39,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 10:21:39,593 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:39,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash 758906489, now seen corresponding path program 1 times [2025-02-06 10:21:39,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:39,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523609468] [2025-02-06 10:21:39,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:39,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:39,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:21:39,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:21:39,607 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:39,607 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:39,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:39,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523609468] [2025-02-06 10:21:39,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523609468] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:39,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430952847] [2025-02-06 10:21:39,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:39,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:39,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:39,671 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:39,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 10:21:39,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:21:39,711 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:21:39,711 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:39,711 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:39,711 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:21:39,712 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:39,789 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:39,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2025-02-06 10:21:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:39,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430952847] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:39,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:39,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-02-06 10:21:39,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782127574] [2025-02-06 10:21:39,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:39,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:21:39,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:39,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:21:39,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:21:39,867 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:39,929 INFO L93 Difference]: Finished difference Result 63 states and 72 transitions. [2025-02-06 10:21:39,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:21:39,929 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-02-06 10:21:39,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:39,930 INFO L225 Difference]: With dead ends: 63 [2025-02-06 10:21:39,930 INFO L226 Difference]: Without dead ends: 63 [2025-02-06 10:21:39,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:21:39,930 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 60 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:39,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 35 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:39,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-06 10:21:39,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2025-02-06 10:21:39,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 54 states have (on average 1.2777777777777777) internal successors, (69), 58 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 69 transitions. [2025-02-06 10:21:39,932 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 69 transitions. Word has length 18 [2025-02-06 10:21:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:39,934 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 69 transitions. [2025-02-06 10:21:39,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 69 transitions. [2025-02-06 10:21:39,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:21:39,934 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:39,935 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:39,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:40,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 10:21:40,136 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:40,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:40,137 INFO L85 PathProgramCache]: Analyzing trace with hash -124684021, now seen corresponding path program 1 times [2025-02-06 10:21:40,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:40,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737663410] [2025-02-06 10:21:40,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:40,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:40,144 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:21:40,150 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:40,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:40,150 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:40,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:40,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737663410] [2025-02-06 10:21:40,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737663410] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:40,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629825738] [2025-02-06 10:21:40,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:40,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:40,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:40,198 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:40,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 10:21:40,241 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:21:40,252 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:40,252 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:40,252 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:40,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:21:40,254 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:40,398 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#mask~0#1.base_14| Int) (|v_ULTIMATE.start_main_~#b~0#1.base_19| Int)) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_19|) 0) (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_19| 1) |v_ULTIMATE.start_main_~#mask~0#1.base_14|) 0) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#b~0#1.base_19| 0) |v_ULTIMATE.start_main_~#mask~0#1.base_14| 0)))) is different from true [2025-02-06 10:21:40,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 10:21:40,399 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:21:40,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629825738] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:40,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:21:40,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2025-02-06 10:21:40,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278751178] [2025-02-06 10:21:40,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:40,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:40,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:40,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:40,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2025-02-06 10:21:40,400 INFO L87 Difference]: Start difference. First operand 59 states and 69 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:40,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:40,417 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2025-02-06 10:21:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:40,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-06 10:21:40,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:40,418 INFO L225 Difference]: With dead ends: 60 [2025-02-06 10:21:40,418 INFO L226 Difference]: Without dead ends: 58 [2025-02-06 10:21:40,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2025-02-06 10:21:40,418 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:40,419 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 15 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 22 Unchecked, 0.0s Time] [2025-02-06 10:21:40,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-06 10:21:40,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2025-02-06 10:21:40,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 1.2641509433962264) internal successors, (67), 57 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2025-02-06 10:21:40,420 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 21 [2025-02-06 10:21:40,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:40,421 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2025-02-06 10:21:40,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:40,421 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2025-02-06 10:21:40,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:21:40,421 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:40,421 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:40,428 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 10:21:40,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 10:21:40,627 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:40,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:40,628 INFO L85 PathProgramCache]: Analyzing trace with hash -124682192, now seen corresponding path program 1 times [2025-02-06 10:21:40,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:40,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258058880] [2025-02-06 10:21:40,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:40,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:40,635 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:21:40,641 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:40,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:40,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:40,688 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 10:21:40,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:40,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258058880] [2025-02-06 10:21:40,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258058880] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:40,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897766364] [2025-02-06 10:21:40,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:40,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:40,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:40,691 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:40,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 10:21:40,725 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:21:40,737 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:40,737 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:40,737 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:40,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 10:21:40,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:40,861 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 10:21:40,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-02-06 10:21:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:40,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:40,950 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 14 treesize of output 12 [2025-02-06 10:21:40,953 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 18 treesize of output 16 [2025-02-06 10:21:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:41,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897766364] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:41,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:41,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 11] total 21 [2025-02-06 10:21:41,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249788740] [2025-02-06 10:21:41,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:41,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 10:21:41,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:41,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 10:21:41,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2025-02-06 10:21:41,067 INFO L87 Difference]: Start difference. First operand 58 states and 67 transitions. Second operand has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:41,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:41,204 INFO L93 Difference]: Finished difference Result 90 states and 102 transitions. [2025-02-06 10:21:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:21:41,204 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-06 10:21:41,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:41,205 INFO L225 Difference]: With dead ends: 90 [2025-02-06 10:21:41,205 INFO L226 Difference]: Without dead ends: 90 [2025-02-06 10:21:41,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2025-02-06 10:21:41,206 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:41,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 71 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:41,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2025-02-06 10:21:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 62. [2025-02-06 10:21:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:41,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2025-02-06 10:21:41,208 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 21 [2025-02-06 10:21:41,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:41,209 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2025-02-06 10:21:41,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.4761904761904763) internal successors, (52), 21 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:41,209 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2025-02-06 10:21:41,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:21:41,209 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:41,209 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1] [2025-02-06 10:21:41,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:41,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-02-06 10:21:41,414 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:41,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:41,415 INFO L85 PathProgramCache]: Analyzing trace with hash 377987313, now seen corresponding path program 2 times [2025-02-06 10:21:41,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:41,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642433854] [2025-02-06 10:21:41,415 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:41,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:41,424 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 10:21:41,430 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:41,430 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:41,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:41,508 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:41,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:41,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642433854] [2025-02-06 10:21:41,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642433854] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:41,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772095473] [2025-02-06 10:21:41,509 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:41,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:41,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:41,511 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:41,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 10:21:41,541 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 21 statements into 2 equivalence classes. [2025-02-06 10:21:41,551 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:41,551 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:41,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:41,552 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:21:41,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:41,605 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:41,605 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:21:41,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1772095473] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:41,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:21:41,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2025-02-06 10:21:41,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519516348] [2025-02-06 10:21:41,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:41,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:21:41,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:41,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:21:41,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:21:41,606 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:41,662 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2025-02-06 10:21:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:21:41,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-06 10:21:41,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:41,663 INFO L225 Difference]: With dead ends: 52 [2025-02-06 10:21:41,663 INFO L226 Difference]: Without dead ends: 52 [2025-02-06 10:21:41,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:41,663 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 10 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:41,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 27 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:41,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-06 10:21:41,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-02-06 10:21:41,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 51 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:41,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2025-02-06 10:21:41,665 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 21 [2025-02-06 10:21:41,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:41,665 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2025-02-06 10:21:41,665 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2025-02-06 10:21:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-06 10:21:41,666 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:41,666 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 10:21:41,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:41,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:41,870 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:41,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:41,871 INFO L85 PathProgramCache]: Analyzing trace with hash -871002062, now seen corresponding path program 1 times [2025-02-06 10:21:41,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:41,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801931812] [2025-02-06 10:21:41,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:41,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:41,876 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 10:21:41,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 10:21:41,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:41,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:41,970 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:41,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:41,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801931812] [2025-02-06 10:21:41,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801931812] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:41,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459864890] [2025-02-06 10:21:41,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:41,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:41,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:41,973 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:41,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 10:21:42,004 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 10:21:42,016 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 10:21:42,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:42,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:42,017 INFO L256 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 10:21:42,017 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:42,082 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:42,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:42,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459864890] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:42,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:42,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2025-02-06 10:21:42,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349790347] [2025-02-06 10:21:42,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:42,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 10:21:42,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:42,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 10:21:42,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:21:42,147 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:42,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:42,285 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2025-02-06 10:21:42,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:21:42,285 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2025-02-06 10:21:42,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:42,285 INFO L225 Difference]: With dead ends: 52 [2025-02-06 10:21:42,285 INFO L226 Difference]: Without dead ends: 52 [2025-02-06 10:21:42,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:21:42,286 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 37 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:42,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 26 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-02-06 10:21:42,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-02-06 10:21:42,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 51 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:42,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2025-02-06 10:21:42,288 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 27 [2025-02-06 10:21:42,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:42,288 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2025-02-06 10:21:42,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:42,288 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2025-02-06 10:21:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-06 10:21:42,288 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:42,289 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1] [2025-02-06 10:21:42,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:42,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-06 10:21:42,493 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:42,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash 672985461, now seen corresponding path program 2 times [2025-02-06 10:21:42,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:42,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001638856] [2025-02-06 10:21:42,494 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:42,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:42,499 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-06 10:21:42,506 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 10:21:42,507 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:42,507 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:42,766 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:42,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:42,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001638856] [2025-02-06 10:21:42,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001638856] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:42,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944710933] [2025-02-06 10:21:42,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:42,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:42,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:42,769 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:42,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 10:21:42,821 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 31 statements into 2 equivalence classes. [2025-02-06 10:21:42,837 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 10:21:42,837 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:42,837 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:42,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 10:21:42,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:42,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:21:42,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2025-02-06 10:21:42,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2025-02-06 10:21:43,149 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:43,150 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:21:43,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944710933] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:43,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:21:43,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2025-02-06 10:21:43,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066183867] [2025-02-06 10:21:43,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:43,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:21:43,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:43,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:21:43,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:21:43,153 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:43,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:43,204 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2025-02-06 10:21:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:21:43,204 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-02-06 10:21:43,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:43,205 INFO L225 Difference]: With dead ends: 51 [2025-02-06 10:21:43,205 INFO L226 Difference]: Without dead ends: 51 [2025-02-06 10:21:43,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:21:43,205 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:43,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:43,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-06 10:21:43,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-02-06 10:21:43,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 47 states have (on average 1.148936170212766) internal successors, (54), 50 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2025-02-06 10:21:43,207 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 31 [2025-02-06 10:21:43,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:43,207 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2025-02-06 10:21:43,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2025-02-06 10:21:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 10:21:43,211 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:43,211 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:43,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:43,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:43,412 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:43,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:43,413 INFO L85 PathProgramCache]: Analyzing trace with hash 209571612, now seen corresponding path program 1 times [2025-02-06 10:21:43,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:43,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278032676] [2025-02-06 10:21:43,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:43,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:43,421 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:21:43,429 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:21:43,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:43,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:43,529 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 21 proven. 53 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:21:43,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:43,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278032676] [2025-02-06 10:21:43,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278032676] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:43,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844682623] [2025-02-06 10:21:43,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:43,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:43,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:43,531 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:43,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 10:21:43,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:21:43,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:21:43,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:43,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:43,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:21:43,588 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:43,685 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 42 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 10:21:43,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:43,751 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 42 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 10:21:43,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844682623] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:43,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:43,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 15 [2025-02-06 10:21:43,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799710525] [2025-02-06 10:21:43,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:43,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 10:21:43,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:43,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 10:21:43,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:43,753 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:43,905 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2025-02-06 10:21:43,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:21:43,906 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2025-02-06 10:21:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:43,906 INFO L225 Difference]: With dead ends: 69 [2025-02-06 10:21:43,906 INFO L226 Difference]: Without dead ends: 69 [2025-02-06 10:21:43,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2025-02-06 10:21:43,907 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:43,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 39 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-06 10:21:43,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 64. [2025-02-06 10:21:43,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 60 states have (on average 1.1166666666666667) internal successors, (67), 63 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2025-02-06 10:21:43,909 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 34 [2025-02-06 10:21:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:43,909 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2025-02-06 10:21:43,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 15 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:43,909 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2025-02-06 10:21:43,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-06 10:21:43,909 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:43,909 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:43,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:44,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2025-02-06 10:21:44,115 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:44,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:44,116 INFO L85 PathProgramCache]: Analyzing trace with hash -829428486, now seen corresponding path program 1 times [2025-02-06 10:21:44,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:44,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230984181] [2025-02-06 10:21:44,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:44,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:44,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 10:21:44,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 10:21:44,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:44,134 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2025-02-06 10:21:44,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:44,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230984181] [2025-02-06 10:21:44,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230984181] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:44,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864784557] [2025-02-06 10:21:44,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:44,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:44,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:44,208 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:44,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 10:21:44,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 10:21:44,266 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 10:21:44,266 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:44,266 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:44,267 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:21:44,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:44,387 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:44,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:44,439 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 10:21:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 33 proven. 5 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:44,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864784557] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:44,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:44,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2025-02-06 10:21:44,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239803243] [2025-02-06 10:21:44,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:44,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 10:21:44,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:44,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 10:21:44,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:44,527 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:44,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:44,634 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2025-02-06 10:21:44,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:21:44,634 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-02-06 10:21:44,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:44,634 INFO L225 Difference]: With dead ends: 97 [2025-02-06 10:21:44,634 INFO L226 Difference]: Without dead ends: 97 [2025-02-06 10:21:44,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:21:44,635 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 149 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:44,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 74 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:44,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-02-06 10:21:44,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 71. [2025-02-06 10:21:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 70 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:44,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2025-02-06 10:21:44,637 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 38 [2025-02-06 10:21:44,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:44,638 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2025-02-06 10:21:44,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:44,638 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2025-02-06 10:21:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-06 10:21:44,638 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:44,639 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 9, 3, 2, 2, 2, 2, 1, 1, 1] [2025-02-06 10:21:44,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 10:21:44,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 10:21:44,839 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:44,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:44,840 INFO L85 PathProgramCache]: Analyzing trace with hash 341336212, now seen corresponding path program 2 times [2025-02-06 10:21:44,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:44,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982419115] [2025-02-06 10:21:44,840 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:44,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:44,846 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-02-06 10:21:44,856 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 10:21:44,856 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:44,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:44,960 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 24 proven. 144 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:44,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:44,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982419115] [2025-02-06 10:21:44,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982419115] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:44,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212862446] [2025-02-06 10:21:44,961 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:44,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:44,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:44,965 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:44,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 10:21:45,006 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-02-06 10:21:45,027 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 10:21:45,027 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:45,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:45,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-06 10:21:45,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 37 proven. 131 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:45,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:45,221 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 37 proven. 131 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2025-02-06 10:21:45,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212862446] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:45,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:45,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2025-02-06 10:21:45,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936674473] [2025-02-06 10:21:45,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:45,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 10:21:45,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:45,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 10:21:45,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:21:45,223 INFO L87 Difference]: Start difference. First operand 71 states and 74 transitions. Second operand has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:45,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:45,420 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2025-02-06 10:21:45,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 10:21:45,421 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-02-06 10:21:45,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:45,422 INFO L225 Difference]: With dead ends: 93 [2025-02-06 10:21:45,422 INFO L226 Difference]: Without dead ends: 93 [2025-02-06 10:21:45,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 88 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=589, Unknown=0, NotChecked=0, Total=812 [2025-02-06 10:21:45,423 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:45,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 35 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:45,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-02-06 10:21:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2025-02-06 10:21:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.0952380952380953) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:45,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2025-02-06 10:21:45,425 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 51 [2025-02-06 10:21:45,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:45,425 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2025-02-06 10:21:45,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.235294117647059) internal successors, (72), 17 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2025-02-06 10:21:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-06 10:21:45,429 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:45,429 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2025-02-06 10:21:45,436 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 10:21:45,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:45,630 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:45,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:45,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1772539609, now seen corresponding path program 2 times [2025-02-06 10:21:45,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:45,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514376333] [2025-02-06 10:21:45,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:45,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:45,637 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 58 statements into 2 equivalence classes. [2025-02-06 10:21:45,651 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 10:21:45,652 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:45,652 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 10 proven. 123 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-06 10:21:45,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:45,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514376333] [2025-02-06 10:21:45,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514376333] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:45,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148298383] [2025-02-06 10:21:45,753 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:45,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:45,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:45,758 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:45,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 10:21:45,804 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 58 statements into 2 equivalence classes. [2025-02-06 10:21:45,827 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 10:21:45,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:45,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:45,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:21:45,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:45,920 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 45 proven. 88 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-06 10:21:45,921 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 45 proven. 88 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-06 10:21:45,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148298383] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:45,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:45,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2025-02-06 10:21:45,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455289990] [2025-02-06 10:21:45,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:45,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-06 10:21:45,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:45,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-06 10:21:45,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:45,991 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:46,169 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2025-02-06 10:21:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:21:46,169 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2025-02-06 10:21:46,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:46,170 INFO L225 Difference]: With dead ends: 89 [2025-02-06 10:21:46,170 INFO L226 Difference]: Without dead ends: 89 [2025-02-06 10:21:46,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 105 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:21:46,171 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 45 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:46,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 33 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:46,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-02-06 10:21:46,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 88. [2025-02-06 10:21:46,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 84 states have (on average 1.0714285714285714) internal successors, (90), 87 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2025-02-06 10:21:46,173 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 58 [2025-02-06 10:21:46,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:46,173 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2025-02-06 10:21:46,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.733333333333333) internal successors, (71), 15 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,173 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2025-02-06 10:21:46,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-06 10:21:46,173 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:46,173 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2025-02-06 10:21:46,180 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 10:21:46,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:46,378 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:46,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:46,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1880505052, now seen corresponding path program 3 times [2025-02-06 10:21:46,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:46,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814147454] [2025-02-06 10:21:46,379 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:46,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:46,386 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 11 equivalence classes. [2025-02-06 10:21:46,390 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 62 statements. [2025-02-06 10:21:46,390 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:21:46,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2025-02-06 10:21:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814147454] [2025-02-06 10:21:46,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814147454] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:46,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017962505] [2025-02-06 10:21:46,474 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:46,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:46,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:46,478 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:46,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 10:21:46,526 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 62 statements into 11 equivalence classes. [2025-02-06 10:21:46,550 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 62 statements. [2025-02-06 10:21:46,550 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:21:46,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:46,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 10:21:46,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:46,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 10:21:46,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:21:46,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2025-02-06 10:21:46,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2025-02-06 10:21:46,801 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2025-02-06 10:21:46,801 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:21:46,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017962505] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:46,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:21:46,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2025-02-06 10:21:46,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201461295] [2025-02-06 10:21:46,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:46,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:21:46,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:46,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:21:46,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:21:46,802 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:46,831 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2025-02-06 10:21:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:21:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-02-06 10:21:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:46,832 INFO L225 Difference]: With dead ends: 87 [2025-02-06 10:21:46,832 INFO L226 Difference]: Without dead ends: 87 [2025-02-06 10:21:46,832 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:21:46,832 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 43 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:46,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 23 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:46,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-02-06 10:21:46,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2025-02-06 10:21:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2025-02-06 10:21:46,834 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 62 [2025-02-06 10:21:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:46,834 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2025-02-06 10:21:46,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2025-02-06 10:21:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-06 10:21:46,834 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:46,834 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2025-02-06 10:21:46,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2025-02-06 10:21:47,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2025-02-06 10:21:47,042 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:47,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:47,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1427454739, now seen corresponding path program 2 times [2025-02-06 10:21:47,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:47,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11023614] [2025-02-06 10:21:47,043 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:47,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:47,051 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 65 statements into 2 equivalence classes. [2025-02-06 10:21:47,052 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 5 of 65 statements. [2025-02-06 10:21:47,052 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:47,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2025-02-06 10:21:47,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:47,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11023614] [2025-02-06 10:21:47,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11023614] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:47,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:47,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:47,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634049886] [2025-02-06 10:21:47,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:47,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:47,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:47,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:47,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:47,100 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:47,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:47,110 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2025-02-06 10:21:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:47,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2025-02-06 10:21:47,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:47,111 INFO L225 Difference]: With dead ends: 86 [2025-02-06 10:21:47,111 INFO L226 Difference]: Without dead ends: 75 [2025-02-06 10:21:47,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:47,112 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 2 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:47,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:47,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2025-02-06 10:21:47,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2025-02-06 10:21:47,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.0410958904109588) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2025-02-06 10:21:47,114 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 65 [2025-02-06 10:21:47,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:47,114 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2025-02-06 10:21:47,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2025-02-06 10:21:47,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2025-02-06 10:21:47,114 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:47,114 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 13, 4, 3, 3, 3, 3, 1, 1, 1] [2025-02-06 10:21:47,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-02-06 10:21:47,114 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONARRAY_INDEX === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:47,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:47,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2097515937, now seen corresponding path program 3 times [2025-02-06 10:21:47,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:47,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274935796] [2025-02-06 10:21:47,115 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:47,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:47,129 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 72 statements into 11 equivalence classes. [2025-02-06 10:21:47,136 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 72 statements. [2025-02-06 10:21:47,136 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:21:47,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-06 10:21:47,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:47,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274935796] [2025-02-06 10:21:47,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274935796] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:47,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798107150] [2025-02-06 10:21:47,221 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:47,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:47,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:47,224 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:47,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 10:21:47,278 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 72 statements into 11 equivalence classes. [2025-02-06 10:21:47,286 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 72 statements. [2025-02-06 10:21:47,286 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-06 10:21:47,286 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:47,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 10:21:47,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:47,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 10:21:47,450 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 13 treesize of output 9 [2025-02-06 10:21:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-06 10:21:47,465 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-06 10:21:47,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798107150] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:47,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:47,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-02-06 10:21:47,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612062957] [2025-02-06 10:21:47,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:47,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:21:47,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:47,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:21:47,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:21:47,833 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:47,891 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2025-02-06 10:21:47,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:21:47,892 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2025-02-06 10:21:47,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:47,892 INFO L225 Difference]: With dead ends: 74 [2025-02-06 10:21:47,892 INFO L226 Difference]: Without dead ends: 74 [2025-02-06 10:21:47,892 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:21:47,892 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:47,893 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 23 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-02-06 10:21:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2025-02-06 10:21:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 73 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2025-02-06 10:21:47,894 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 72 [2025-02-06 10:21:47,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:47,894 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2025-02-06 10:21:47,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.833333333333333) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:47,894 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2025-02-06 10:21:47,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2025-02-06 10:21:47,894 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:47,894 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 4, 3, 3, 3, 3, 1, 1, 1] [2025-02-06 10:21:47,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:48,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:48,095 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:48,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:48,096 INFO L85 PathProgramCache]: Analyzing trace with hash -598484612, now seen corresponding path program 1 times [2025-02-06 10:21:48,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:48,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652213142] [2025-02-06 10:21:48,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:48,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:48,103 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-06 10:21:48,113 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-06 10:21:48,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:48,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-02-06 10:21:48,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:48,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652213142] [2025-02-06 10:21:48,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652213142] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:48,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030981140] [2025-02-06 10:21:48,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:48,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:48,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:48,339 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:48,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 10:21:48,395 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 73 statements into 1 equivalence classes. [2025-02-06 10:21:48,422 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 73 of 73 statements. [2025-02-06 10:21:48,422 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:48,422 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:48,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-06 10:21:48,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:48,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 10:21:48,658 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-02-06 10:21:48,658 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2025-02-06 10:21:48,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030981140] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:48,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:48,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2025-02-06 10:21:48,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052139373] [2025-02-06 10:21:48,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:48,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 10:21:48,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:48,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 10:21:48,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:21:48,903 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:49,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:49,137 INFO L93 Difference]: Finished difference Result 98 states and 105 transitions. [2025-02-06 10:21:49,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 10:21:49,138 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2025-02-06 10:21:49,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:49,138 INFO L225 Difference]: With dead ends: 98 [2025-02-06 10:21:49,138 INFO L226 Difference]: Without dead ends: 98 [2025-02-06 10:21:49,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=207, Invalid=549, Unknown=0, NotChecked=0, Total=756 [2025-02-06 10:21:49,142 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:49,142 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 20 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:49,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2025-02-06 10:21:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2025-02-06 10:21:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0824742268041236) internal successors, (105), 97 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2025-02-06 10:21:49,144 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 73 [2025-02-06 10:21:49,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:49,144 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2025-02-06 10:21:49,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:49,144 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2025-02-06 10:21:49,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2025-02-06 10:21:49,145 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:49,145 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 4, 3, 3, 3, 3, 1, 1, 1] [2025-02-06 10:21:49,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:49,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:49,346 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:49,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:49,346 INFO L85 PathProgramCache]: Analyzing trace with hash -245208690, now seen corresponding path program 2 times [2025-02-06 10:21:49,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:49,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192471879] [2025-02-06 10:21:49,346 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:49,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:49,357 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-02-06 10:21:49,371 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-06 10:21:49,371 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:49,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 191 proven. 579 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-06 10:21:49,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:49,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192471879] [2025-02-06 10:21:49,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192471879] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:49,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257927838] [2025-02-06 10:21:49,726 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:49,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:49,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:49,728 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:49,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 10:21:49,792 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 97 statements into 2 equivalence classes. [2025-02-06 10:21:49,825 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 97 of 97 statements. [2025-02-06 10:21:49,826 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:49,826 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:49,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 10:21:49,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 373 proven. 347 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-02-06 10:21:50,125 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 373 proven. 347 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2025-02-06 10:21:50,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257927838] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:50,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:50,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 25 [2025-02-06 10:21:50,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116214797] [2025-02-06 10:21:50,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:50,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:21:50,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:50,289 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:21:50,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=450, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:21:50,289 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:50,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:50,581 INFO L93 Difference]: Finished difference Result 126 states and 134 transitions. [2025-02-06 10:21:50,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-06 10:21:50,582 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2025-02-06 10:21:50,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:50,582 INFO L225 Difference]: With dead ends: 126 [2025-02-06 10:21:50,582 INFO L226 Difference]: Without dead ends: 126 [2025-02-06 10:21:50,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 177 SyntacticMatches, 9 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=416, Invalid=1390, Unknown=0, NotChecked=0, Total=1806 [2025-02-06 10:21:50,583 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:50,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 23 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:50,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2025-02-06 10:21:50,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2025-02-06 10:21:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0737704918032787) internal successors, (131), 122 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:50,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2025-02-06 10:21:50,585 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 97 [2025-02-06 10:21:50,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:50,585 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2025-02-06 10:21:50,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.56) internal successors, (114), 25 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:50,585 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2025-02-06 10:21:50,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2025-02-06 10:21:50,585 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:50,585 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 5, 4, 4, 4, 4, 1, 1, 1] [2025-02-06 10:21:50,594 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 10:21:50,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:50,786 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:50,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:50,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1491800089, now seen corresponding path program 3 times [2025-02-06 10:21:50,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:50,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626530937] [2025-02-06 10:21:50,787 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:50,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:50,798 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 118 statements into 15 equivalence classes. [2025-02-06 10:21:50,828 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 76 of 118 statements. [2025-02-06 10:21:50,828 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-06 10:21:50,828 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 19 proven. 832 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2025-02-06 10:21:51,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626530937] [2025-02-06 10:21:51,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626530937] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306533623] [2025-02-06 10:21:51,167 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:51,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:51,170 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:51,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 10:21:51,242 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 118 statements into 15 equivalence classes. [2025-02-06 10:21:51,280 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) and asserted 76 of 118 statements. [2025-02-06 10:21:51,281 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2025-02-06 10:21:51,281 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:51,282 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-02-06 10:21:51,284 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 259 proven. 708 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2025-02-06 10:21:51,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:52,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1211 backedges. 78 proven. 889 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2025-02-06 10:21:52,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306533623] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:52,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:52,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 43 [2025-02-06 10:21:52,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053704491] [2025-02-06 10:21:52,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:52,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2025-02-06 10:21:52,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:52,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2025-02-06 10:21:52,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=1592, Unknown=0, NotChecked=0, Total=1806 [2025-02-06 10:21:52,030 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand has 43 states, 43 states have (on average 3.3488372093023258) internal successors, (144), 43 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:52,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:52,780 INFO L93 Difference]: Finished difference Result 151 states and 160 transitions. [2025-02-06 10:21:52,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 10:21:52,780 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.3488372093023258) internal successors, (144), 43 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2025-02-06 10:21:52,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:52,781 INFO L225 Difference]: With dead ends: 151 [2025-02-06 10:21:52,781 INFO L226 Difference]: Without dead ends: 151 [2025-02-06 10:21:52,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 205 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=805, Invalid=3355, Unknown=0, NotChecked=0, Total=4160 [2025-02-06 10:21:52,783 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 140 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:52,783 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 39 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:52,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2025-02-06 10:21:52,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 123. [2025-02-06 10:21:52,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.0737704918032787) internal successors, (131), 122 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:52,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 131 transitions. [2025-02-06 10:21:52,786 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 131 transitions. Word has length 118 [2025-02-06 10:21:52,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:52,786 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 131 transitions. [2025-02-06 10:21:52,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 3.3488372093023258) internal successors, (144), 43 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:52,786 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 131 transitions. [2025-02-06 10:21:52,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-02-06 10:21:52,787 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:52,787 INFO L218 NwaCegarLoop]: trace histogram [25, 25, 24, 24, 5, 4, 4, 4, 4, 1, 1, 1] [2025-02-06 10:21:52,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:52,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2025-02-06 10:21:52,988 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:52,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:52,989 INFO L85 PathProgramCache]: Analyzing trace with hash -780682954, now seen corresponding path program 4 times [2025-02-06 10:21:52,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:52,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31820747] [2025-02-06 10:21:52,989 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:21:52,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:53,002 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 122 statements into 2 equivalence classes. [2025-02-06 10:21:53,021 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 122 of 122 statements. [2025-02-06 10:21:53,021 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:21:53,021 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:53,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 296 proven. 918 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2025-02-06 10:21:53,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:53,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31820747] [2025-02-06 10:21:53,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31820747] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:53,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732794259] [2025-02-06 10:21:53,253 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:21:53,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:53,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:53,255 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:53,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 10:21:53,340 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 122 statements into 2 equivalence classes. [2025-02-06 10:21:53,394 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 122 of 122 statements. [2025-02-06 10:21:53,394 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:21:53,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:53,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 10:21:53,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:53,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 238 proven. 978 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-02-06 10:21:53,691 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:53,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1310 backedges. 238 proven. 978 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2025-02-06 10:21:53,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732794259] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:53,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:53,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 36 [2025-02-06 10:21:53,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124994371] [2025-02-06 10:21:53,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:53,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2025-02-06 10:21:53,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:53,913 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2025-02-06 10:21:53,913 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=900, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 10:21:53,914 INFO L87 Difference]: Start difference. First operand 123 states and 131 transitions. Second operand has 36 states, 36 states have (on average 4.944444444444445) internal successors, (178), 36 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:54,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:54,768 INFO L93 Difference]: Finished difference Result 464 states and 498 transitions. [2025-02-06 10:21:54,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2025-02-06 10:21:54,769 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.944444444444445) internal successors, (178), 36 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2025-02-06 10:21:54,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:54,770 INFO L225 Difference]: With dead ends: 464 [2025-02-06 10:21:54,770 INFO L226 Difference]: Without dead ends: 464 [2025-02-06 10:21:54,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 217 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4041 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=2687, Invalid=7015, Unknown=0, NotChecked=0, Total=9702 [2025-02-06 10:21:54,773 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:54,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 28 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:21:54,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2025-02-06 10:21:54,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 413. [2025-02-06 10:21:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.0825242718446602) internal successors, (446), 412 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:54,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 446 transitions. [2025-02-06 10:21:54,781 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 446 transitions. Word has length 122 [2025-02-06 10:21:54,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:54,781 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 446 transitions. [2025-02-06 10:21:54,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.944444444444445) internal successors, (178), 36 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:54,781 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 446 transitions. [2025-02-06 10:21:54,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2025-02-06 10:21:54,782 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:54,782 INFO L218 NwaCegarLoop]: trace histogram [45, 45, 44, 44, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:21:54,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2025-02-06 10:21:54,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:54,986 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:54,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:54,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1294268107, now seen corresponding path program 5 times [2025-02-06 10:21:54,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:54,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369354727] [2025-02-06 10:21:54,986 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:21:54,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:55,009 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 227 statements into 27 equivalence classes. [2025-02-06 10:21:55,050 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 95 of 227 statements. [2025-02-06 10:21:55,050 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-06 10:21:55,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 2156 proven. 114 refuted. 0 times theorem prover too weak. 2240 trivial. 0 not checked. [2025-02-06 10:21:55,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369354727] [2025-02-06 10:21:55,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369354727] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:55,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971707233] [2025-02-06 10:21:55,212 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:21:55,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:55,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:55,214 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:55,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 10:21:55,319 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 227 statements into 27 equivalence classes. [2025-02-06 10:21:55,361 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) and asserted 95 of 227 statements. [2025-02-06 10:21:55,361 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2025-02-06 10:21:55,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:55,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:21:55,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 2156 proven. 114 refuted. 0 times theorem prover too weak. 2240 trivial. 0 not checked. [2025-02-06 10:21:55,533 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4510 backedges. 2169 proven. 101 refuted. 0 times theorem prover too weak. 2240 trivial. 0 not checked. [2025-02-06 10:21:55,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971707233] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:55,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:55,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 31 [2025-02-06 10:21:55,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173328360] [2025-02-06 10:21:55,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:55,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2025-02-06 10:21:55,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:55,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2025-02-06 10:21:55,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2025-02-06 10:21:55,698 INFO L87 Difference]: Start difference. First operand 413 states and 446 transitions. Second operand has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:55,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:55,958 INFO L93 Difference]: Finished difference Result 308 states and 329 transitions. [2025-02-06 10:21:55,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 10:21:55,959 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2025-02-06 10:21:55,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:55,960 INFO L225 Difference]: With dead ends: 308 [2025-02-06 10:21:55,960 INFO L226 Difference]: Without dead ends: 308 [2025-02-06 10:21:55,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 434 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1391, Unknown=0, NotChecked=0, Total=1806 [2025-02-06 10:21:55,961 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 44 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:55,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 19 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:55,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-02-06 10:21:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2025-02-06 10:21:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.0716612377850163) internal successors, (329), 307 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:55,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 329 transitions. [2025-02-06 10:21:55,965 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 329 transitions. Word has length 227 [2025-02-06 10:21:55,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:55,965 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 329 transitions. [2025-02-06 10:21:55,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.0) internal successors, (124), 31 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:55,965 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 329 transitions. [2025-02-06 10:21:55,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2025-02-06 10:21:55,966 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:55,966 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 49, 49, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:21:55,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-06 10:21:56,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2025-02-06 10:21:56,167 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:56,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:56,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1831006350, now seen corresponding path program 6 times [2025-02-06 10:21:56,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:56,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434202644] [2025-02-06 10:21:56,167 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:21:56,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:56,190 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 247 statements into 28 equivalence classes. [2025-02-06 10:21:56,260 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 126 of 247 statements. [2025-02-06 10:21:56,260 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-02-06 10:21:56,260 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5490 backedges. 814 proven. 1841 refuted. 0 times theorem prover too weak. 2835 trivial. 0 not checked. [2025-02-06 10:21:56,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:56,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434202644] [2025-02-06 10:21:56,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434202644] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:56,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332200271] [2025-02-06 10:21:56,731 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:21:56,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:56,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:56,733 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:56,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 10:21:56,832 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 247 statements into 28 equivalence classes. [2025-02-06 10:21:56,920 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) and asserted 126 of 247 statements. [2025-02-06 10:21:56,921 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2025-02-06 10:21:56,921 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:56,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 10:21:56,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:57,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5490 backedges. 943 proven. 1847 refuted. 0 times theorem prover too weak. 2700 trivial. 0 not checked. [2025-02-06 10:21:57,348 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:57,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5490 backedges. 148 proven. 2642 refuted. 0 times theorem prover too weak. 2700 trivial. 0 not checked. [2025-02-06 10:21:57,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332200271] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:57,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:57,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 19, 19] total 48 [2025-02-06 10:21:57,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011556709] [2025-02-06 10:21:57,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:57,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-06 10:21:57,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:57,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-06 10:21:57,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1935, Unknown=0, NotChecked=0, Total=2256 [2025-02-06 10:21:57,807 INFO L87 Difference]: Start difference. First operand 308 states and 329 transitions. Second operand has 48 states, 48 states have (on average 3.4166666666666665) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:58,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:58,305 INFO L93 Difference]: Finished difference Result 465 states and 491 transitions. [2025-02-06 10:21:58,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 10:21:58,305 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.4166666666666665) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 247 [2025-02-06 10:21:58,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:58,306 INFO L225 Difference]: With dead ends: 465 [2025-02-06 10:21:58,306 INFO L226 Difference]: Without dead ends: 465 [2025-02-06 10:21:58,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 459 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=805, Invalid=3355, Unknown=0, NotChecked=0, Total=4160 [2025-02-06 10:21:58,308 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 151 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:58,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 24 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:58,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2025-02-06 10:21:58,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 408. [2025-02-06 10:21:58,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.0638820638820639) internal successors, (433), 407 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:58,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 433 transitions. [2025-02-06 10:21:58,325 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 433 transitions. Word has length 247 [2025-02-06 10:21:58,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:58,326 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 433 transitions. [2025-02-06 10:21:58,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.4166666666666665) internal successors, (164), 48 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 433 transitions. [2025-02-06 10:21:58,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2025-02-06 10:21:58,329 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:58,330 INFO L218 NwaCegarLoop]: trace histogram [51, 51, 50, 50, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:21:58,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-06 10:21:58,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-02-06 10:21:58,534 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:21:58,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:58,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1295013675, now seen corresponding path program 7 times [2025-02-06 10:21:58,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:58,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883442365] [2025-02-06 10:21:58,534 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 10:21:58,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:58,551 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 251 statements into 1 equivalence classes. [2025-02-06 10:21:58,574 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 251 of 251 statements. [2025-02-06 10:21:58,574 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:58,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 5698 backedges. 3634 proven. 186 refuted. 0 times theorem prover too weak. 1878 trivial. 0 not checked. [2025-02-06 10:21:58,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:58,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883442365] [2025-02-06 10:21:58,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883442365] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:58,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077041539] [2025-02-06 10:21:58,918 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 10:21:58,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:58,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:58,920 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:58,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-06 10:21:59,023 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 251 statements into 1 equivalence classes. [2025-02-06 10:21:59,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 251 of 251 statements. [2025-02-06 10:21:59,101 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:59,101 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:59,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 10:21:59,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 5698 backedges. 3114 proven. 363 refuted. 0 times theorem prover too weak. 2221 trivial. 0 not checked. [2025-02-06 10:21:59,286 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:59,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5698 backedges. 3114 proven. 363 refuted. 0 times theorem prover too weak. 2221 trivial. 0 not checked. [2025-02-06 10:21:59,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077041539] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:59,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:59,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 25 [2025-02-06 10:21:59,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468908512] [2025-02-06 10:21:59,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:59,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:21:59,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:59,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:21:59,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:21:59,473 INFO L87 Difference]: Start difference. First operand 408 states and 433 transitions. Second operand has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:00,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:00,021 INFO L93 Difference]: Finished difference Result 308 states and 323 transitions. [2025-02-06 10:22:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2025-02-06 10:22:00,021 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 251 [2025-02-06 10:22:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:00,022 INFO L225 Difference]: With dead ends: 308 [2025-02-06 10:22:00,022 INFO L226 Difference]: Without dead ends: 308 [2025-02-06 10:22:00,023 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 483 SyntacticMatches, 9 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=517, Invalid=2033, Unknown=0, NotChecked=0, Total=2550 [2025-02-06 10:22:00,024 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 44 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:00,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 25 Invalid, 785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:22:00,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-02-06 10:22:00,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2025-02-06 10:22:00,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.0521172638436482) internal successors, (323), 307 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 323 transitions. [2025-02-06 10:22:00,029 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 323 transitions. Word has length 251 [2025-02-06 10:22:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:00,030 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 323 transitions. [2025-02-06 10:22:00,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.0) internal successors, (125), 25 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:00,030 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 323 transitions. [2025-02-06 10:22:00,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2025-02-06 10:22:00,032 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:00,032 INFO L218 NwaCegarLoop]: trace histogram [55, 55, 54, 54, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:22:00,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:00,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:00,233 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:00,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1402227947, now seen corresponding path program 8 times [2025-02-06 10:22:00,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:00,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778064307] [2025-02-06 10:22:00,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:22:00,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:00,255 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 267 statements into 2 equivalence classes. [2025-02-06 10:22:00,284 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 267 of 267 statements. [2025-02-06 10:22:00,284 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:22:00,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6570 backedges. 3787 proven. 253 refuted. 0 times theorem prover too weak. 2530 trivial. 0 not checked. [2025-02-06 10:22:00,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:00,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778064307] [2025-02-06 10:22:00,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778064307] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:00,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980160593] [2025-02-06 10:22:00,818 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:22:00,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:00,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:00,820 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:00,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2025-02-06 10:22:00,934 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 267 statements into 2 equivalence classes. [2025-02-06 10:22:01,014 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 267 of 267 statements. [2025-02-06 10:22:01,015 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:22:01,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:01,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:22:01,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:01,364 INFO L134 CoverageAnalysis]: Checked inductivity of 6570 backedges. 4099 proven. 601 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2025-02-06 10:22:01,365 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:01,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6570 backedges. 4099 proven. 601 refuted. 0 times theorem prover too weak. 1870 trivial. 0 not checked. [2025-02-06 10:22:01,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980160593] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:01,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:01,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 35 [2025-02-06 10:22:01,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024962227] [2025-02-06 10:22:01,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:01,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2025-02-06 10:22:01,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:01,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2025-02-06 10:22:01,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2025-02-06 10:22:01,644 INFO L87 Difference]: Start difference. First operand 308 states and 323 transitions. Second operand has 35 states, 35 states have (on average 4.771428571428571) internal successors, (167), 35 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:02,640 INFO L93 Difference]: Finished difference Result 308 states and 318 transitions. [2025-02-06 10:22:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-06 10:22:02,641 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.771428571428571) internal successors, (167), 35 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 267 [2025-02-06 10:22:02,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:02,642 INFO L225 Difference]: With dead ends: 308 [2025-02-06 10:22:02,642 INFO L226 Difference]: Without dead ends: 308 [2025-02-06 10:22:02,643 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 510 SyntacticMatches, 6 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1070 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=870, Invalid=3686, Unknown=0, NotChecked=0, Total=4556 [2025-02-06 10:22:02,647 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 50 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1408 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:02,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 36 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1408 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-02-06 10:22:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2025-02-06 10:22:02,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2025-02-06 10:22:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 1.0358306188925082) internal successors, (318), 307 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:02,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 318 transitions. [2025-02-06 10:22:02,654 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 318 transitions. Word has length 267 [2025-02-06 10:22:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:02,654 INFO L471 AbstractCegarLoop]: Abstraction has 308 states and 318 transitions. [2025-02-06 10:22:02,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.771428571428571) internal successors, (167), 35 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:02,655 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 318 transitions. [2025-02-06 10:22:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2025-02-06 10:22:02,655 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:02,655 INFO L218 NwaCegarLoop]: trace histogram [59, 59, 58, 58, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:22:02,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2025-02-06 10:22:02,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:02,856 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:02,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1887039275, now seen corresponding path program 9 times [2025-02-06 10:22:02,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:02,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723639110] [2025-02-06 10:22:02,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:02,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:02,877 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 283 statements into 33 equivalence classes. [2025-02-06 10:22:02,914 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 92 of 283 statements. [2025-02-06 10:22:02,914 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 10:22:02,914 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 7506 backedges. 0 proven. 2373 refuted. 0 times theorem prover too weak. 5133 trivial. 0 not checked. [2025-02-06 10:22:03,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:03,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723639110] [2025-02-06 10:22:03,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723639110] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:03,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168016960] [2025-02-06 10:22:03,201 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:03,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:03,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:03,203 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:03,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2025-02-06 10:22:03,349 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 283 statements into 33 equivalence classes. [2025-02-06 10:22:03,394 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 92 of 283 statements. [2025-02-06 10:22:03,394 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-02-06 10:22:03,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:03,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 10:22:03,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7506 backedges. 3361 proven. 389 refuted. 0 times theorem prover too weak. 3756 trivial. 0 not checked. [2025-02-06 10:22:03,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7506 backedges. 3361 proven. 389 refuted. 0 times theorem prover too weak. 3756 trivial. 0 not checked. [2025-02-06 10:22:04,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168016960] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:04,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:04,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23, 23] total 57 [2025-02-06 10:22:04,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156171832] [2025-02-06 10:22:04,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:04,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2025-02-06 10:22:04,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:04,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2025-02-06 10:22:04,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=488, Invalid=2704, Unknown=0, NotChecked=0, Total=3192 [2025-02-06 10:22:04,431 INFO L87 Difference]: Start difference. First operand 308 states and 318 transitions. Second operand has 57 states, 57 states have (on average 3.807017543859649) internal successors, (217), 57 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:06,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:06,147 INFO L93 Difference]: Finished difference Result 554 states and 575 transitions. [2025-02-06 10:22:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2025-02-06 10:22:06,147 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 3.807017543859649) internal successors, (217), 57 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2025-02-06 10:22:06,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:06,149 INFO L225 Difference]: With dead ends: 554 [2025-02-06 10:22:06,149 INFO L226 Difference]: Without dead ends: 554 [2025-02-06 10:22:06,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2916 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2246, Invalid=9096, Unknown=0, NotChecked=0, Total=11342 [2025-02-06 10:22:06,151 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 303 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:06,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 23 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 10:22:06,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2025-02-06 10:22:06,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 312. [2025-02-06 10:22:06,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.0385852090032155) internal successors, (323), 311 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:06,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 323 transitions. [2025-02-06 10:22:06,160 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 323 transitions. Word has length 283 [2025-02-06 10:22:06,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:06,160 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 323 transitions. [2025-02-06 10:22:06,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 3.807017543859649) internal successors, (217), 57 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:06,160 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 323 transitions. [2025-02-06 10:22:06,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2025-02-06 10:22:06,161 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:06,161 INFO L218 NwaCegarLoop]: trace histogram [65, 65, 64, 64, 10, 9, 9, 9, 9, 1, 1, 1] [2025-02-06 10:22:06,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:06,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2025-02-06 10:22:06,363 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:06,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash -62231899, now seen corresponding path program 10 times [2025-02-06 10:22:06,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:06,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999772456] [2025-02-06 10:22:06,363 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:22:06,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:06,382 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 307 statements into 2 equivalence classes. [2025-02-06 10:22:06,449 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 307 of 307 statements. [2025-02-06 10:22:06,449 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:22:06,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:07,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9030 backedges. 6058 proven. 1672 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2025-02-06 10:22:07,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999772456] [2025-02-06 10:22:07,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999772456] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:07,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73425634] [2025-02-06 10:22:07,007 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:22:07,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:07,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:07,009 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:07,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2025-02-06 10:22:07,137 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 307 statements into 2 equivalence classes. [2025-02-06 10:22:07,334 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 307 of 307 statements. [2025-02-06 10:22:07,334 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:22:07,335 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:07,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 1168 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 10:22:07,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 9030 backedges. 359 proven. 7990 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2025-02-06 10:22:07,919 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:08,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9030 backedges. 359 proven. 7990 refuted. 0 times theorem prover too weak. 681 trivial. 0 not checked. [2025-02-06 10:22:08,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73425634] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:08,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:08,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 24, 24] total 54 [2025-02-06 10:22:08,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160945908] [2025-02-06 10:22:08,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:08,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2025-02-06 10:22:08,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:08,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2025-02-06 10:22:08,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2438, Unknown=0, NotChecked=0, Total=2862 [2025-02-06 10:22:08,426 INFO L87 Difference]: Start difference. First operand 312 states and 323 transitions. Second operand has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:10,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:10,628 INFO L93 Difference]: Finished difference Result 457 states and 465 transitions. [2025-02-06 10:22:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2025-02-06 10:22:10,628 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 307 [2025-02-06 10:22:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:10,629 INFO L225 Difference]: With dead ends: 457 [2025-02-06 10:22:10,629 INFO L226 Difference]: Without dead ends: 457 [2025-02-06 10:22:10,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 570 SyntacticMatches, 10 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6713 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3445, Invalid=19507, Unknown=0, NotChecked=0, Total=22952 [2025-02-06 10:22:10,632 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 275 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:10,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 53 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2025-02-06 10:22:10,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2025-02-06 10:22:10,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 402. [2025-02-06 10:22:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 1.0199501246882794) internal successors, (409), 401 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:10,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 409 transitions. [2025-02-06 10:22:10,636 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 409 transitions. Word has length 307 [2025-02-06 10:22:10,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:10,637 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 409 transitions. [2025-02-06 10:22:10,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 5.2407407407407405) internal successors, (283), 54 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:10,637 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 409 transitions. [2025-02-06 10:22:10,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2025-02-06 10:22:10,638 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:10,638 INFO L218 NwaCegarLoop]: trace histogram [75, 75, 74, 74, 11, 10, 10, 10, 10, 1, 1, 1] [2025-02-06 10:22:10,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2025-02-06 10:22:10,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2025-02-06 10:22:10,838 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:10,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:10,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1220574960, now seen corresponding path program 11 times [2025-02-06 10:22:10,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:10,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526923486] [2025-02-06 10:22:10,839 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:22:10,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:10,860 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 352 statements into 34 equivalence classes. [2025-02-06 10:22:11,086 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) and asserted 260 of 352 statements. [2025-02-06 10:22:11,087 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2025-02-06 10:22:11,087 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12011 backedges. 7816 proven. 529 refuted. 0 times theorem prover too weak. 3666 trivial. 0 not checked. [2025-02-06 10:22:11,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:11,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526923486] [2025-02-06 10:22:11,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526923486] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:11,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862964142] [2025-02-06 10:22:11,558 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:22:11,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:11,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:11,560 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:11,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2025-02-06 10:22:11,717 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 352 statements into 34 equivalence classes. [2025-02-06 10:22:12,135 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) and asserted 260 of 352 statements. [2025-02-06 10:22:12,135 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2025-02-06 10:22:12,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:12,140 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 10:22:12,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12011 backedges. 8406 proven. 2144 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2025-02-06 10:22:12,643 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 12011 backedges. 8894 proven. 1656 refuted. 0 times theorem prover too weak. 1461 trivial. 0 not checked. [2025-02-06 10:22:13,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862964142] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:13,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:13,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2025-02-06 10:22:13,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448558567] [2025-02-06 10:22:13,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:13,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-06 10:22:13,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:13,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-06 10:22:13,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=381, Invalid=1689, Unknown=0, NotChecked=0, Total=2070 [2025-02-06 10:22:13,014 INFO L87 Difference]: Start difference. First operand 402 states and 409 transitions. Second operand has 46 states, 46 states have (on average 4.586956521739131) internal successors, (211), 46 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:14,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:14,497 INFO L93 Difference]: Finished difference Result 361 states and 364 transitions. [2025-02-06 10:22:14,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2025-02-06 10:22:14,497 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.586956521739131) internal successors, (211), 46 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 352 [2025-02-06 10:22:14,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:14,498 INFO L225 Difference]: With dead ends: 361 [2025-02-06 10:22:14,498 INFO L226 Difference]: Without dead ends: 361 [2025-02-06 10:22:14,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 782 GetRequests, 665 SyntacticMatches, 16 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3143 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2245, Invalid=8261, Unknown=0, NotChecked=0, Total=10506 [2025-02-06 10:22:14,500 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 63 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 2256 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:14,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 60 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2256 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 10:22:14,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2025-02-06 10:22:14,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2025-02-06 10:22:14,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.011111111111111) internal successors, (364), 360 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:14,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 364 transitions. [2025-02-06 10:22:14,503 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 364 transitions. Word has length 352 [2025-02-06 10:22:14,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:14,504 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 364 transitions. [2025-02-06 10:22:14,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.586956521739131) internal successors, (211), 46 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:14,504 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 364 transitions. [2025-02-06 10:22:14,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2025-02-06 10:22:14,505 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:14,505 INFO L218 NwaCegarLoop]: trace histogram [76, 76, 75, 75, 11, 10, 10, 10, 10, 1, 1, 1] [2025-02-06 10:22:14,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:14,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:14,709 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:14,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:14,710 INFO L85 PathProgramCache]: Analyzing trace with hash -911079149, now seen corresponding path program 12 times [2025-02-06 10:22:14,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:14,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987739860] [2025-02-06 10:22:14,710 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:22:14,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:14,750 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 356 statements into 34 equivalence classes. [2025-02-06 10:22:14,895 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) and asserted 193 of 356 statements. [2025-02-06 10:22:14,899 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2025-02-06 10:22:14,900 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:15,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12320 backedges. 0 proven. 3381 refuted. 0 times theorem prover too weak. 8939 trivial. 0 not checked. [2025-02-06 10:22:15,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:15,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987739860] [2025-02-06 10:22:15,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987739860] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:15,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052394290] [2025-02-06 10:22:15,402 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:22:15,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:15,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:15,405 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:15,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-06 10:22:15,556 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 356 statements into 34 equivalence classes. [2025-02-06 10:22:15,764 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) and asserted 193 of 356 statements. [2025-02-06 10:22:15,764 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2025-02-06 10:22:15,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:15,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:22:15,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:15,775 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 10:22:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12320 backedges. 0 proven. 3381 refuted. 0 times theorem prover too weak. 8939 trivial. 0 not checked. [2025-02-06 10:22:16,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12320 backedges. 0 proven. 3381 refuted. 0 times theorem prover too weak. 8939 trivial. 0 not checked. [2025-02-06 10:22:17,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052394290] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:17,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:17,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 43 [2025-02-06 10:22:17,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379614838] [2025-02-06 10:22:17,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:17,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2025-02-06 10:22:17,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:17,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2025-02-06 10:22:17,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=618, Invalid=1274, Unknown=0, NotChecked=0, Total=1892 [2025-02-06 10:22:17,632 INFO L87 Difference]: Start difference. First operand 361 states and 364 transitions. Second operand has 44 states, 43 states have (on average 4.069767441860465) internal successors, (175), 44 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:18,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:18,118 INFO L93 Difference]: Finished difference Result 413 states and 429 transitions. [2025-02-06 10:22:18,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2025-02-06 10:22:18,118 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 4.069767441860465) internal successors, (175), 44 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2025-02-06 10:22:18,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:18,120 INFO L225 Difference]: With dead ends: 413 [2025-02-06 10:22:18,120 INFO L226 Difference]: Without dead ends: 413 [2025-02-06 10:22:18,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1353 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1424, Invalid=3132, Unknown=0, NotChecked=0, Total=4556 [2025-02-06 10:22:18,124 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 103 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:18,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 21 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:22:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2025-02-06 10:22:18,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2025-02-06 10:22:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.0412621359223302) internal successors, (429), 412 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:18,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 429 transitions. [2025-02-06 10:22:18,127 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 429 transitions. Word has length 356 [2025-02-06 10:22:18,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:18,128 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 429 transitions. [2025-02-06 10:22:18,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 4.069767441860465) internal successors, (175), 44 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:18,128 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 429 transitions. [2025-02-06 10:22:18,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2025-02-06 10:22:18,129 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:18,129 INFO L218 NwaCegarLoop]: trace histogram [89, 89, 88, 88, 11, 10, 10, 10, 10, 1, 1, 1] [2025-02-06 10:22:18,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-02-06 10:22:18,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2025-02-06 10:22:18,333 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:18,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:18,334 INFO L85 PathProgramCache]: Analyzing trace with hash -628249734, now seen corresponding path program 13 times [2025-02-06 10:22:18,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:18,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456577577] [2025-02-06 10:22:18,334 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 10:22:18,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:18,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 408 statements into 1 equivalence classes. [2025-02-06 10:22:18,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 408 of 408 statements. [2025-02-06 10:22:18,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:18,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:19,127 INFO L134 CoverageAnalysis]: Checked inductivity of 16701 backedges. 11999 proven. 2812 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2025-02-06 10:22:19,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:19,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456577577] [2025-02-06 10:22:19,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456577577] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:19,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633400103] [2025-02-06 10:22:19,127 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 10:22:19,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:19,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:19,134 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:19,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-06 10:22:19,332 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 408 statements into 1 equivalence classes. [2025-02-06 10:22:19,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 408 of 408 statements. [2025-02-06 10:22:19,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:19,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:19,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 1512 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:22:19,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:19,852 INFO L134 CoverageAnalysis]: Checked inductivity of 16701 backedges. 12308 proven. 2503 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2025-02-06 10:22:19,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 16701 backedges. 12308 proven. 2503 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2025-02-06 10:22:20,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633400103] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:20,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:20,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2025-02-06 10:22:20,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810713606] [2025-02-06 10:22:20,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:20,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2025-02-06 10:22:20,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:20,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2025-02-06 10:22:20,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1617, Unknown=0, NotChecked=0, Total=2070 [2025-02-06 10:22:20,283 INFO L87 Difference]: Start difference. First operand 413 states and 429 transitions. Second operand has 46 states, 46 states have (on average 4.956521739130435) internal successors, (228), 46 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:21,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:21,487 INFO L93 Difference]: Finished difference Result 413 states and 427 transitions. [2025-02-06 10:22:21,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2025-02-06 10:22:21,487 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.956521739130435) internal successors, (228), 46 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 408 [2025-02-06 10:22:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:21,491 INFO L225 Difference]: With dead ends: 413 [2025-02-06 10:22:21,491 INFO L226 Difference]: Without dead ends: 413 [2025-02-06 10:22:21,493 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 783 SyntacticMatches, 10 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3042 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=3108, Invalid=9102, Unknown=0, NotChecked=0, Total=12210 [2025-02-06 10:22:21,493 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 69 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:21,493 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 90 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 10:22:21,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2025-02-06 10:22:21,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2025-02-06 10:22:21,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 1.0364077669902914) internal successors, (427), 412 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:21,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 427 transitions. [2025-02-06 10:22:21,497 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 427 transitions. Word has length 408 [2025-02-06 10:22:21,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:21,497 INFO L471 AbstractCegarLoop]: Abstraction has 413 states and 427 transitions. [2025-02-06 10:22:21,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 4.956521739130435) internal successors, (228), 46 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:21,497 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 427 transitions. [2025-02-06 10:22:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2025-02-06 10:22:21,498 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:21,498 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 89, 89, 11, 10, 10, 10, 10, 1, 1, 1] [2025-02-06 10:22:21,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-02-06 10:22:21,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2025-02-06 10:22:21,700 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:21,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1050306071, now seen corresponding path program 14 times [2025-02-06 10:22:21,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:21,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618214627] [2025-02-06 10:22:21,701 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:22:21,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:21,728 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 412 statements into 2 equivalence classes. [2025-02-06 10:22:21,777 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 412 of 412 statements. [2025-02-06 10:22:21,778 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:22:21,778 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:22,999 INFO L134 CoverageAnalysis]: Checked inductivity of 17066 backedges. 1213 proven. 14908 refuted. 0 times theorem prover too weak. 945 trivial. 0 not checked. [2025-02-06 10:22:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618214627] [2025-02-06 10:22:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618214627] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928372088] [2025-02-06 10:22:22,999 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:22:22,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:22,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:23,001 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:23,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-06 10:22:23,172 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 412 statements into 2 equivalence classes. [2025-02-06 10:22:23,291 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 412 of 412 statements. [2025-02-06 10:22:23,291 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:22:23,291 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:23,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-06 10:22:23,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:23,807 INFO L134 CoverageAnalysis]: Checked inductivity of 17066 backedges. 4258 proven. 11575 refuted. 0 times theorem prover too weak. 1233 trivial. 0 not checked. [2025-02-06 10:22:23,807 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17066 backedges. 4258 proven. 11575 refuted. 0 times theorem prover too weak. 1233 trivial. 0 not checked. [2025-02-06 10:22:24,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928372088] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:24,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:24,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 26, 26] total 53 [2025-02-06 10:22:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453123836] [2025-02-06 10:22:24,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:24,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2025-02-06 10:22:24,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:24,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2025-02-06 10:22:24,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=2116, Unknown=0, NotChecked=0, Total=2756 [2025-02-06 10:22:24,191 INFO L87 Difference]: Start difference. First operand 413 states and 427 transitions. Second operand has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:25,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:25,407 INFO L93 Difference]: Finished difference Result 469 states and 484 transitions. [2025-02-06 10:22:25,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2025-02-06 10:22:25,408 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 412 [2025-02-06 10:22:25,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:25,409 INFO L225 Difference]: With dead ends: 469 [2025-02-06 10:22:25,409 INFO L226 Difference]: Without dead ends: 469 [2025-02-06 10:22:25,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 948 GetRequests, 786 SyntacticMatches, 23 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7612 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=3811, Invalid=15929, Unknown=0, NotChecked=0, Total=19740 [2025-02-06 10:22:25,410 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:25,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 29 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-02-06 10:22:25,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2025-02-06 10:22:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 466. [2025-02-06 10:22:25,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 1.0344086021505376) internal successors, (481), 465 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:25,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 481 transitions. [2025-02-06 10:22:25,414 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 481 transitions. Word has length 412 [2025-02-06 10:22:25,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:25,415 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 481 transitions. [2025-02-06 10:22:25,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.9245283018867925) internal successors, (261), 53 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:25,415 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 481 transitions. [2025-02-06 10:22:25,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2025-02-06 10:22:25,416 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:25,416 INFO L218 NwaCegarLoop]: trace histogram [101, 101, 100, 100, 12, 11, 11, 11, 11, 1, 1, 1] [2025-02-06 10:22:25,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2025-02-06 10:22:25,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:25,617 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:25,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:25,617 INFO L85 PathProgramCache]: Analyzing trace with hash 891978511, now seen corresponding path program 15 times [2025-02-06 10:22:25,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:25,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046919848] [2025-02-06 10:22:25,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:25,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:25,642 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 461 statements into 35 equivalence classes. [2025-02-06 10:22:25,679 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 168 of 461 statements. [2025-02-06 10:22:25,679 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-02-06 10:22:25,679 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:26,164 INFO L134 CoverageAnalysis]: Checked inductivity of 21497 backedges. 47 proven. 11164 refuted. 0 times theorem prover too weak. 10286 trivial. 0 not checked. [2025-02-06 10:22:26,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:26,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046919848] [2025-02-06 10:22:26,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046919848] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:26,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591840542] [2025-02-06 10:22:26,164 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:26,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:26,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:26,166 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:26,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-06 10:22:26,365 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 461 statements into 35 equivalence classes. [2025-02-06 10:22:26,488 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) and asserted 168 of 461 statements. [2025-02-06 10:22:26,488 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2025-02-06 10:22:26,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:26,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-06 10:22:26,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:26,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2025-02-06 10:22:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21497 backedges. 3133 proven. 8078 refuted. 0 times theorem prover too weak. 10286 trivial. 0 not checked. [2025-02-06 10:22:27,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 21497 backedges. 0 proven. 11211 refuted. 0 times theorem prover too weak. 10286 trivial. 0 not checked. [2025-02-06 10:22:29,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591840542] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:29,395 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:29,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 58 [2025-02-06 10:22:29,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868432888] [2025-02-06 10:22:29,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:29,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2025-02-06 10:22:29,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:29,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2025-02-06 10:22:29,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=2694, Unknown=0, NotChecked=0, Total=3422 [2025-02-06 10:22:29,396 INFO L87 Difference]: Start difference. First operand 466 states and 481 transitions. Second operand has 59 states, 58 states have (on average 3.586206896551724) internal successors, (208), 59 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:36,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:36,275 INFO L93 Difference]: Finished difference Result 778 states and 835 transitions. [2025-02-06 10:22:36,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2025-02-06 10:22:36,275 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 3.586206896551724) internal successors, (208), 59 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 461 [2025-02-06 10:22:36,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:36,277 INFO L225 Difference]: With dead ends: 778 [2025-02-06 10:22:36,277 INFO L226 Difference]: Without dead ends: 778 [2025-02-06 10:22:36,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1081 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13389 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=10624, Invalid=29176, Unknown=0, NotChecked=0, Total=39800 [2025-02-06 10:22:36,285 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 584 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:36,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [584 Valid, 27 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:22:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2025-02-06 10:22:36,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 673. [2025-02-06 10:22:36,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 672 states have (on average 1.0505952380952381) internal successors, (706), 672 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 706 transitions. [2025-02-06 10:22:36,301 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 706 transitions. Word has length 461 [2025-02-06 10:22:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:36,304 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 706 transitions. [2025-02-06 10:22:36,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 3.586206896551724) internal successors, (208), 59 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:36,305 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 706 transitions. [2025-02-06 10:22:36,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2025-02-06 10:22:36,307 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:36,307 INFO L218 NwaCegarLoop]: trace histogram [138, 138, 137, 137, 14, 13, 13, 13, 13, 1, 1, 1] [2025-02-06 10:22:36,314 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2025-02-06 10:22:36,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-02-06 10:22:36,508 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:36,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:36,509 INFO L85 PathProgramCache]: Analyzing trace with hash 96428648, now seen corresponding path program 16 times [2025-02-06 10:22:36,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:36,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021622446] [2025-02-06 10:22:36,509 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:22:36,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:36,570 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 619 statements into 2 equivalence classes. [2025-02-06 10:22:36,788 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 619 of 619 statements. [2025-02-06 10:22:36,788 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:22:36,788 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 39872 backedges. 1865 proven. 35380 refuted. 0 times theorem prover too weak. 2627 trivial. 0 not checked. [2025-02-06 10:22:38,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:38,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021622446] [2025-02-06 10:22:38,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021622446] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:38,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996107194] [2025-02-06 10:22:38,399 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:22:38,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:38,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:38,401 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:38,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2025-02-06 10:22:38,612 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 619 statements into 2 equivalence classes. [2025-02-06 10:22:39,496 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 619 of 619 statements. [2025-02-06 10:22:39,496 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:22:39,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:39,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 2245 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-02-06 10:22:39,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:40,592 INFO L134 CoverageAnalysis]: Checked inductivity of 39872 backedges. 1402 proven. 35845 refuted. 0 times theorem prover too weak. 2625 trivial. 0 not checked. [2025-02-06 10:22:40,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:41,546 INFO L134 CoverageAnalysis]: Checked inductivity of 39872 backedges. 1402 proven. 35845 refuted. 0 times theorem prover too weak. 2625 trivial. 0 not checked. [2025-02-06 10:22:41,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996107194] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:41,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:41,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 41, 41] total 83 [2025-02-06 10:22:41,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256460498] [2025-02-06 10:22:41,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:41,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2025-02-06 10:22:41,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:41,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2025-02-06 10:22:41,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1793, Invalid=5013, Unknown=0, NotChecked=0, Total=6806 [2025-02-06 10:22:41,553 INFO L87 Difference]: Start difference. First operand 673 states and 706 transitions. Second operand has 83 states, 83 states have (on average 5.253012048192771) internal successors, (436), 83 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:47,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:47,683 INFO L93 Difference]: Finished difference Result 3472 states and 3773 transitions. [2025-02-06 10:22:47,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 347 states. [2025-02-06 10:22:47,684 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 5.253012048192771) internal successors, (436), 83 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 619 [2025-02-06 10:22:47,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:47,690 INFO L225 Difference]: With dead ends: 3472 [2025-02-06 10:22:47,691 INFO L226 Difference]: Without dead ends: 3472 [2025-02-06 10:22:47,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1598 GetRequests, 1174 SyntacticMatches, 21 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91651 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=45576, Invalid=118044, Unknown=0, NotChecked=0, Total=163620 [2025-02-06 10:22:47,700 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 2590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:47,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 2590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-02-06 10:22:47,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2025-02-06 10:22:47,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 1920. [2025-02-06 10:22:47,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 1.0844189682126106) internal successors, (2081), 1919 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2081 transitions. [2025-02-06 10:22:47,724 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2081 transitions. Word has length 619 [2025-02-06 10:22:47,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:47,725 INFO L471 AbstractCegarLoop]: Abstraction has 1920 states and 2081 transitions. [2025-02-06 10:22:47,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 5.253012048192771) internal successors, (436), 83 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2081 transitions. [2025-02-06 10:22:47,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1110 [2025-02-06 10:22:47,731 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:47,731 INFO L218 NwaCegarLoop]: trace histogram [248, 248, 247, 247, 24, 23, 23, 23, 23, 1, 1, 1] [2025-02-06 10:22:47,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2025-02-06 10:22:47,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2025-02-06 10:22:47,932 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:47,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:47,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1825265512, now seen corresponding path program 17 times [2025-02-06 10:22:47,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:47,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061882304] [2025-02-06 10:22:47,933 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:22:47,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:47,987 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1109 statements into 84 equivalence classes. [2025-02-06 10:22:48,423 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) and asserted 420 of 1109 statements. [2025-02-06 10:22:48,424 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2025-02-06 10:22:48,424 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:49,169 INFO L134 CoverageAnalysis]: Checked inductivity of 129257 backedges. 63329 proven. 3594 refuted. 0 times theorem prover too weak. 62334 trivial. 0 not checked. [2025-02-06 10:22:49,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:49,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061882304] [2025-02-06 10:22:49,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061882304] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:49,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465682404] [2025-02-06 10:22:49,169 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:22:49,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:49,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:49,171 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:49,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2025-02-06 10:22:49,501 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1109 statements into 84 equivalence classes. [2025-02-06 10:22:50,476 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) and asserted 420 of 1109 statements. [2025-02-06 10:22:50,476 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2025-02-06 10:22:50,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:50,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-06 10:22:50,493 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 129257 backedges. 63329 proven. 3594 refuted. 0 times theorem prover too weak. 62334 trivial. 0 not checked. [2025-02-06 10:22:51,046 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 129257 backedges. 64325 proven. 2598 refuted. 0 times theorem prover too weak. 62334 trivial. 0 not checked. [2025-02-06 10:22:51,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465682404] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:51,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:51,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 51 [2025-02-06 10:22:51,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151471908] [2025-02-06 10:22:51,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:51,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2025-02-06 10:22:51,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:51,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2025-02-06 10:22:51,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=2070, Unknown=0, NotChecked=0, Total=2550 [2025-02-06 10:22:51,514 INFO L87 Difference]: Start difference. First operand 1920 states and 2081 transitions. Second operand has 51 states, 51 states have (on average 4.529411764705882) internal successors, (231), 51 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:53,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:53,274 INFO L93 Difference]: Finished difference Result 1515 states and 1619 transitions. [2025-02-06 10:22:53,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2025-02-06 10:22:53,274 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 4.529411764705882) internal successors, (231), 51 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1109 [2025-02-06 10:22:53,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:53,277 INFO L225 Difference]: With dead ends: 1515 [2025-02-06 10:22:53,278 INFO L226 Difference]: Without dead ends: 1515 [2025-02-06 10:22:53,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2314 GetRequests, 2176 SyntacticMatches, 18 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4289 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3362, Invalid=11400, Unknown=0, NotChecked=0, Total=14762 [2025-02-06 10:22:53,279 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 70 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:53,279 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 44 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 10:22:53,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2025-02-06 10:22:53,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1515. [2025-02-06 10:22:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1514 states have (on average 1.0693527080581242) internal successors, (1619), 1514 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:53,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1619 transitions. [2025-02-06 10:22:53,296 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1619 transitions. Word has length 1109 [2025-02-06 10:22:53,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:53,296 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 1619 transitions. [2025-02-06 10:22:53,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 4.529411764705882) internal successors, (231), 51 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:53,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1619 transitions. [2025-02-06 10:22:53,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1150 [2025-02-06 10:22:53,310 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:53,310 INFO L218 NwaCegarLoop]: trace histogram [258, 258, 257, 257, 24, 23, 23, 23, 23, 1, 1, 1] [2025-02-06 10:22:53,320 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2025-02-06 10:22:53,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2025-02-06 10:22:53,514 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2025-02-06 10:22:53,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:53,515 INFO L85 PathProgramCache]: Analyzing trace with hash 31436488, now seen corresponding path program 18 times [2025-02-06 10:22:53,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:53,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380494283] [2025-02-06 10:22:53,515 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:22:53,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:53,591 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1149 statements into 91 equivalence classes. [2025-02-06 10:22:54,456 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) and asserted 631 of 1149 statements. [2025-02-06 10:22:54,456 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2025-02-06 10:22:54,456 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 139577 backedges. 47 proven. 54889 refuted. 0 times theorem prover too weak. 84641 trivial. 0 not checked. [2025-02-06 10:22:55,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:55,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380494283] [2025-02-06 10:22:55,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380494283] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:55,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306316238] [2025-02-06 10:22:55,990 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:22:55,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:55,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:55,993 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:55,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2025-02-06 10:22:56,302 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1149 statements into 91 equivalence classes. [2025-02-06 10:23:03,360 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) and asserted 631 of 1149 statements. [2025-02-06 10:23:03,360 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 47 check-sat command(s) [2025-02-06 10:23:03,360 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:23:03,378 INFO L256 TraceCheckSpWp]: Trace formula consists of 2284 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-06 10:23:03,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:23:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 139577 backedges. 30582 proven. 25225 refuted. 0 times theorem prover too weak. 83770 trivial. 0 not checked. [2025-02-06 10:23:05,283 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:23:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 139577 backedges. 852 proven. 54955 refuted. 0 times theorem prover too weak. 83770 trivial. 0 not checked. [2025-02-06 10:23:07,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306316238] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:23:07,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:23:07,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 35, 35] total 88 [2025-02-06 10:23:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171231334] [2025-02-06 10:23:07,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:23:07,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2025-02-06 10:23:07,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:23:07,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2025-02-06 10:23:07,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=906, Invalid=6750, Unknown=0, NotChecked=0, Total=7656 [2025-02-06 10:23:07,221 INFO L87 Difference]: Start difference. First operand 1515 states and 1619 transitions. Second operand has 88 states, 88 states have (on average 3.852272727272727) internal successors, (339), 88 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)