./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/lockfree-3.0.i --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/memsafety/lockfree-3.0.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ce7b97696e85da66033a1f3711f1d24681434c76600ae3cd891d7ea07b7fcbea --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:15:33,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:15:33,698 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:15:33,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:15:33,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:15:33,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:15:33,722 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:15:33,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:15:33,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:15:33,723 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:15:33,723 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:15:33,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:15:33,724 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:15:33,724 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:15:33,724 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:15:33,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:15:33,725 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:15:33,725 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:15:33,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:15:33,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:15:33,726 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:15:33,726 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:15:33,726 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:15:33,727 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:15:33,727 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:15:33,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:15:33,727 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:15:33,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:15:33,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:15:33,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:15:33,727 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 -> ce7b97696e85da66033a1f3711f1d24681434c76600ae3cd891d7ea07b7fcbea [2025-02-06 10:15:33,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:15:33,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:15:33,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:15:33,969 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:15:33,969 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:15:33,970 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/lockfree-3.0.i [2025-02-06 10:15:35,100 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1c26d9708/5201a2ac2d2d4fb0839c91a249f7ae78/FLAG87b1324aa [2025-02-06 10:15:35,527 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:15:35,528 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety/lockfree-3.0.i [2025-02-06 10:15:35,552 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1c26d9708/5201a2ac2d2d4fb0839c91a249f7ae78/FLAG87b1324aa [2025-02-06 10:15:35,686 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1c26d9708/5201a2ac2d2d4fb0839c91a249f7ae78 [2025-02-06 10:15:35,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:15:35,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:15:35,691 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:15:35,692 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:15:35,695 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:15:35,695 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:15:35" (1/1) ... [2025-02-06 10:15:35,697 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b70dca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:35, skipping insertion in model container [2025-02-06 10:15:35,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:15:35" (1/1) ... [2025-02-06 10:15:35,735 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:15:36,007 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:15:36,016 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:15:36,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:15:36,077 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:15:36,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36 WrapperNode [2025-02-06 10:15:36,079 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:15:36,079 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:15:36,079 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:15:36,080 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:15:36,085 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,094 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,109 INFO L138 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2025-02-06 10:15:36,111 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:15:36,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:15:36,112 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:15:36,113 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:15:36,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,119 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,122 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,140 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2025-02-06 10:15:36,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,144 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,148 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,152 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,153 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,153 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,159 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:15:36,159 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:15:36,159 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:15:36,159 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:15:36,160 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (1/1) ... [2025-02-06 10:15:36,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:15:36,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:36,190 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 10:15:36,197 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 10:15:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 10:15:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-06 10:15:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:15:36,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:15:36,304 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:15:36,306 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:15:36,495 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2025-02-06 10:15:36,495 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:15:36,505 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:15:36,508 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:15:36,509 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:15:36 BoogieIcfgContainer [2025-02-06 10:15:36,509 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:15:36,511 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:15:36,513 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:15:36,521 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:15:36,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:15:35" (1/3) ... [2025-02-06 10:15:36,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59033e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:15:36, skipping insertion in model container [2025-02-06 10:15:36,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:15:36" (2/3) ... [2025-02-06 10:15:36,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59033e7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:15:36, skipping insertion in model container [2025-02-06 10:15:36,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:15:36" (3/3) ... [2025-02-06 10:15:36,523 INFO L128 eAbstractionObserver]: Analyzing ICFG lockfree-3.0.i [2025-02-06 10:15:36,532 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:15:36,534 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG lockfree-3.0.i that has 1 procedures, 63 locations, 1 initial locations, 2 loop locations, and 20 error locations. [2025-02-06 10:15:36,577 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:15:36,586 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;@60374b9d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:15:36,587 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-02-06 10:15:36,589 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 62 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 10:15:36,592 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:36,593 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 10:15:36,593 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:36,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:36,597 INFO L85 PathProgramCache]: Analyzing trace with hash 134521835, now seen corresponding path program 1 times [2025-02-06 10:15:36,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:36,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967848828] [2025-02-06 10:15:36,602 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:36,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:36,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 10:15:36,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 10:15:36,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:36,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:36,685 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 10:15:36,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:36,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967848828] [2025-02-06 10:15:36,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967848828] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:15:36,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:15:36,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:15:36,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168599037] [2025-02-06 10:15:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:15:36,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-02-06 10:15:36,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:36,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-02-06 10:15:36,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 10:15:36,705 INFO L87 Difference]: Start difference. First operand has 63 states, 42 states have (on average 1.9285714285714286) internal successors, (81), 62 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 10:15:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:36,718 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2025-02-06 10:15:36,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-02-06 10:15:36,719 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 10:15:36,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:36,724 INFO L225 Difference]: With dead ends: 63 [2025-02-06 10:15:36,724 INFO L226 Difference]: Without dead ends: 61 [2025-02-06 10:15:36,725 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-02-06 10:15:36,727 INFO L435 NwaCegarLoop]: 80 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:36,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:36,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-06 10:15:36,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-02-06 10:15:36,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 41 states have (on average 1.9024390243902438) internal successors, (78), 60 states have internal predecessors, (78), 0 states have call successors, (0), 0 states 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 10:15:36,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2025-02-06 10:15:36,748 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 5 [2025-02-06 10:15:36,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:36,748 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2025-02-06 10:15:36,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 10:15:36,748 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2025-02-06 10:15:36,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 10:15:36,749 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:36,749 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:36,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:15:36,749 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:36,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:36,750 INFO L85 PathProgramCache]: Analyzing trace with hash 428708584, now seen corresponding path program 1 times [2025-02-06 10:15:36,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:36,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790605015] [2025-02-06 10:15:36,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:36,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:36,756 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:15:36,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:15:36,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:36,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:36,789 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 10:15:36,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:36,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790605015] [2025-02-06 10:15:36,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790605015] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:15:36,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:15:36,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:15:36,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991267394] [2025-02-06 10:15:36,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:15:36,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:15:36,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:36,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:15:36,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:15:36,791 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:36,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:36,844 INFO L93 Difference]: Finished difference Result 113 states and 147 transitions. [2025-02-06 10:15:36,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:15:36,844 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-06 10:15:36,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:36,846 INFO L225 Difference]: With dead ends: 113 [2025-02-06 10:15:36,846 INFO L226 Difference]: Without dead ends: 112 [2025-02-06 10:15:36,846 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 10:15:36,846 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:36,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 120 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:36,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-02-06 10:15:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 92. [2025-02-06 10:15:36,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 72 states have (on average 1.8888888888888888) internal successors, (136), 91 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:36,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 136 transitions. [2025-02-06 10:15:36,856 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 136 transitions. Word has length 7 [2025-02-06 10:15:36,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:36,856 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 136 transitions. [2025-02-06 10:15:36,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:36,856 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 136 transitions. [2025-02-06 10:15:36,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-06 10:15:36,857 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:36,857 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:36,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:15:36,857 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:36,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:36,858 INFO L85 PathProgramCache]: Analyzing trace with hash 428708936, now seen corresponding path program 1 times [2025-02-06 10:15:36,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:36,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717443097] [2025-02-06 10:15:36,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:36,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:36,864 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-06 10:15:36,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-06 10:15:36,869 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:36,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:36,902 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 10:15:36,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:36,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717443097] [2025-02-06 10:15:36,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717443097] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:15:36,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:15:36,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:15:36,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776440773] [2025-02-06 10:15:36,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:15:36,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:15:36,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:36,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:15:36,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:15:36,903 INFO L87 Difference]: Start difference. First operand 92 states and 136 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:36,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:36,957 INFO L93 Difference]: Finished difference Result 170 states and 257 transitions. [2025-02-06 10:15:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:15:36,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-06 10:15:36,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:36,959 INFO L225 Difference]: With dead ends: 170 [2025-02-06 10:15:36,959 INFO L226 Difference]: Without dead ends: 169 [2025-02-06 10:15:36,959 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 10:15:36,959 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 61 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 138 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 10:15:36,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 138 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:36,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2025-02-06 10:15:36,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 147. [2025-02-06 10:15:36,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 127 states have (on average 1.889763779527559) internal successors, (240), 146 states have internal predecessors, (240), 0 states have call successors, (0), 0 states 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 10:15:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 240 transitions. [2025-02-06 10:15:36,973 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 240 transitions. Word has length 7 [2025-02-06 10:15:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:36,973 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 240 transitions. [2025-02-06 10:15:36,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 240 transitions. [2025-02-06 10:15:36,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 10:15:36,973 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:36,973 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:36,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 10:15:36,974 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:36,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:36,974 INFO L85 PathProgramCache]: Analyzing trace with hash 405149582, now seen corresponding path program 1 times [2025-02-06 10:15:36,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:36,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221901042] [2025-02-06 10:15:36,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:36,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 10:15:36,987 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 10:15:36,988 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:36,988 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:37,076 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 10:15:37,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:37,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221901042] [2025-02-06 10:15:37,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221901042] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:15:37,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:15:37,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:15:37,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220978838] [2025-02-06 10:15:37,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:15:37,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:15:37,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:37,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:15:37,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:15:37,078 INFO L87 Difference]: Start difference. First operand 147 states and 240 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:37,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:37,164 INFO L93 Difference]: Finished difference Result 223 states and 347 transitions. [2025-02-06 10:15:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:15:37,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-06 10:15:37,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:37,165 INFO L225 Difference]: With dead ends: 223 [2025-02-06 10:15:37,168 INFO L226 Difference]: Without dead ends: 223 [2025-02-06 10:15:37,168 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 10:15:37,168 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 68 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:37,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 170 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:15:37,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2025-02-06 10:15:37,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 201. [2025-02-06 10:15:37,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 183 states have (on average 1.819672131147541) internal successors, (333), 200 states have internal predecessors, (333), 0 states have call successors, (0), 0 states 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 10:15:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 333 transitions. [2025-02-06 10:15:37,181 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 333 transitions. Word has length 8 [2025-02-06 10:15:37,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:37,181 INFO L471 AbstractCegarLoop]: Abstraction has 201 states and 333 transitions. [2025-02-06 10:15:37,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 333 transitions. [2025-02-06 10:15:37,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-06 10:15:37,181 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:37,182 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:37,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 10:15:37,182 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:37,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:37,182 INFO L85 PathProgramCache]: Analyzing trace with hash 405149583, now seen corresponding path program 1 times [2025-02-06 10:15:37,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:37,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995074646] [2025-02-06 10:15:37,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:37,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:37,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-06 10:15:37,194 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-06 10:15:37,194 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:37,194 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:37,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:37,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995074646] [2025-02-06 10:15:37,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995074646] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:15:37,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:15:37,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:15:37,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994574113] [2025-02-06 10:15:37,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:15:37,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:15:37,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:37,292 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:15:37,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:15:37,292 INFO L87 Difference]: Start difference. First operand 201 states and 333 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:37,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:37,341 INFO L93 Difference]: Finished difference Result 218 states and 338 transitions. [2025-02-06 10:15:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:15:37,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-06 10:15:37,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:37,343 INFO L225 Difference]: With dead ends: 218 [2025-02-06 10:15:37,344 INFO L226 Difference]: Without dead ends: 218 [2025-02-06 10:15:37,344 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 10:15:37,345 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 67 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:37,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 177 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:37,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2025-02-06 10:15:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 199. [2025-02-06 10:15:37,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 183 states have (on average 1.7759562841530054) internal successors, (325), 198 states have internal predecessors, (325), 0 states have call successors, (0), 0 states 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 10:15:37,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 325 transitions. [2025-02-06 10:15:37,359 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 325 transitions. Word has length 8 [2025-02-06 10:15:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:37,359 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 325 transitions. [2025-02-06 10:15:37,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 325 transitions. [2025-02-06 10:15:37,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 10:15:37,359 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:37,359 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:37,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 10:15:37,360 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:37,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash -325263160, now seen corresponding path program 1 times [2025-02-06 10:15:37,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:37,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853124836] [2025-02-06 10:15:37,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:37,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:37,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 10:15:37,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 10:15:37,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:37,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:37,415 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 10:15:37,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:37,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853124836] [2025-02-06 10:15:37,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853124836] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:15:37,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:15:37,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:15:37,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419329643] [2025-02-06 10:15:37,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:15:37,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:15:37,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:37,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:15:37,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:15:37,416 INFO L87 Difference]: Start difference. First operand 199 states and 325 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:37,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:37,484 INFO L93 Difference]: Finished difference Result 370 states and 578 transitions. [2025-02-06 10:15:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:15:37,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-06 10:15:37,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:37,486 INFO L225 Difference]: With dead ends: 370 [2025-02-06 10:15:37,486 INFO L226 Difference]: Without dead ends: 370 [2025-02-06 10:15:37,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:15:37,487 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 52 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:37,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 260 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:37,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2025-02-06 10:15:37,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 343. [2025-02-06 10:15:37,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 327 states have (on average 1.7033639143730888) internal successors, (557), 342 states have internal predecessors, (557), 0 states have call successors, (0), 0 states 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 10:15:37,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 557 transitions. [2025-02-06 10:15:37,501 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 557 transitions. Word has length 9 [2025-02-06 10:15:37,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:37,501 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 557 transitions. [2025-02-06 10:15:37,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:37,501 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 557 transitions. [2025-02-06 10:15:37,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 10:15:37,502 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:37,502 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:37,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 10:15:37,502 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:37,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:37,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1453134797, now seen corresponding path program 1 times [2025-02-06 10:15:37,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:37,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77180581] [2025-02-06 10:15:37,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:37,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:37,507 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:15:37,509 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:15:37,509 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:37,509 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:37,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:37,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:37,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77180581] [2025-02-06 10:15:37,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77180581] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:15:37,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:15:37,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:15:37,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278190970] [2025-02-06 10:15:37,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:15:37,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:15:37,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:37,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:15:37,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:15:37,565 INFO L87 Difference]: Start difference. First operand 343 states and 557 transitions. Second operand has 5 states, 5 states have (on average 2.0) 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 10:15:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:37,611 INFO L93 Difference]: Finished difference Result 606 states and 920 transitions. [2025-02-06 10:15:37,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:15:37,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) 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 10 [2025-02-06 10:15:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:37,614 INFO L225 Difference]: With dead ends: 606 [2025-02-06 10:15:37,616 INFO L226 Difference]: Without dead ends: 606 [2025-02-06 10:15:37,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:15:37,617 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 44 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:37,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 255 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:37,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2025-02-06 10:15:37,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 575. [2025-02-06 10:15:37,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 559 states have (on average 1.5974955277280858) internal successors, (893), 574 states have internal predecessors, (893), 0 states have call successors, (0), 0 states 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 10:15:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 893 transitions. [2025-02-06 10:15:37,630 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 893 transitions. Word has length 10 [2025-02-06 10:15:37,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:37,631 INFO L471 AbstractCegarLoop]: Abstraction has 575 states and 893 transitions. [2025-02-06 10:15:37,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) 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 10:15:37,631 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 893 transitions. [2025-02-06 10:15:37,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-06 10:15:37,631 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:37,631 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:37,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 10:15:37,632 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:37,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:37,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2010883166, now seen corresponding path program 1 times [2025-02-06 10:15:37,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:37,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420047901] [2025-02-06 10:15:37,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:37,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:37,638 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 10:15:37,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 10:15:37,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:37,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:37,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:37,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420047901] [2025-02-06 10:15:37,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420047901] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:37,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303134423] [2025-02-06 10:15:37,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:37,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:37,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:37,733 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 10:15:37,735 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 10:15:37,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 10:15:37,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 10:15:37,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:37,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:37,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 10:15:37,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:37,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:37,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303134423] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:37,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:37,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2025-02-06 10:15:37,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678632690] [2025-02-06 10:15:37,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:37,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:15:37,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:37,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:15:37,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:15:37,877 INFO L87 Difference]: Start difference. First operand 575 states and 893 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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 10:15:37,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:37,921 INFO L93 Difference]: Finished difference Result 593 states and 885 transitions. [2025-02-06 10:15:37,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:15:37,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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 15 [2025-02-06 10:15:37,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:37,923 INFO L225 Difference]: With dead ends: 593 [2025-02-06 10:15:37,923 INFO L226 Difference]: Without dead ends: 593 [2025-02-06 10:15:37,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:15:37,924 INFO L435 NwaCegarLoop]: 101 mSDtfsCounter, 163 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:37,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 245 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:37,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2025-02-06 10:15:37,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 583. [2025-02-06 10:15:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 567 states have (on average 1.5537918871252205) internal successors, (881), 582 states have internal predecessors, (881), 0 states have call successors, (0), 0 states 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 10:15:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 881 transitions. [2025-02-06 10:15:37,932 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 881 transitions. Word has length 15 [2025-02-06 10:15:37,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:37,932 INFO L471 AbstractCegarLoop]: Abstraction has 583 states and 881 transitions. [2025-02-06 10:15:37,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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 10:15:37,933 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 881 transitions. [2025-02-06 10:15:37,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 10:15:37,933 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:37,933 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:37,939 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 10:15:38,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:38,137 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:38,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1686085863, now seen corresponding path program 1 times [2025-02-06 10:15:38,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:38,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184927019] [2025-02-06 10:15:38,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:38,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:38,143 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 10:15:38,145 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 10:15:38,145 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:38,145 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:38,222 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:38,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:38,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184927019] [2025-02-06 10:15:38,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184927019] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:15:38,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:15:38,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:15:38,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970616320] [2025-02-06 10:15:38,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:15:38,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:15:38,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:38,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:15:38,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:15:38,224 INFO L87 Difference]: Start difference. First operand 583 states and 881 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:38,259 INFO L93 Difference]: Finished difference Result 913 states and 1405 transitions. [2025-02-06 10:15:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:15:38,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-06 10:15:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:38,262 INFO L225 Difference]: With dead ends: 913 [2025-02-06 10:15:38,262 INFO L226 Difference]: Without dead ends: 913 [2025-02-06 10:15:38,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:15:38,263 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 102 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:38,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 258 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:38,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2025-02-06 10:15:38,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 875. [2025-02-06 10:15:38,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 859 states have (on average 1.5750873108265424) internal successors, (1353), 874 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states 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 10:15:38,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1353 transitions. [2025-02-06 10:15:38,276 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1353 transitions. Word has length 16 [2025-02-06 10:15:38,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:38,276 INFO L471 AbstractCegarLoop]: Abstraction has 875 states and 1353 transitions. [2025-02-06 10:15:38,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:38,276 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1353 transitions. [2025-02-06 10:15:38,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-02-06 10:15:38,277 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:38,277 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:38,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 10:15:38,277 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:38,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1721377752, now seen corresponding path program 1 times [2025-02-06 10:15:38,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:38,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7337634] [2025-02-06 10:15:38,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:38,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:38,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 10:15:38,284 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 10:15:38,284 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:38,284 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:38,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:38,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:38,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7337634] [2025-02-06 10:15:38,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7337634] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:38,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129370929] [2025-02-06 10:15:38,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:38,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:38,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:38,339 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 10:15:38,371 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 10:15:38,409 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 10:15:38,418 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 10:15:38,418 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:38,418 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:38,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:15:38,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:38,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:38,442 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:38,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:38,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129370929] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:38,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:38,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 8 [2025-02-06 10:15:38,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826536453] [2025-02-06 10:15:38,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:38,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:15:38,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:38,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:15:38,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:15:38,472 INFO L87 Difference]: Start difference. First operand 875 states and 1353 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 10:15:38,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:38,549 INFO L93 Difference]: Finished difference Result 1465 states and 2161 transitions. [2025-02-06 10:15:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 10:15:38,550 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2025-02-06 10:15:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:38,554 INFO L225 Difference]: With dead ends: 1465 [2025-02-06 10:15:38,554 INFO L226 Difference]: Without dead ends: 1465 [2025-02-06 10:15:38,554 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:15:38,554 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 148 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:38,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 309 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2025-02-06 10:15:38,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1355. [2025-02-06 10:15:38,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1355 states, 1339 states have (on average 1.5197908887229277) internal successors, (2035), 1354 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states 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 10:15:38,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1355 states to 1355 states and 2035 transitions. [2025-02-06 10:15:38,573 INFO L78 Accepts]: Start accepts. Automaton has 1355 states and 2035 transitions. Word has length 16 [2025-02-06 10:15:38,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:38,573 INFO L471 AbstractCegarLoop]: Abstraction has 1355 states and 2035 transitions. [2025-02-06 10:15:38,573 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states 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 10:15:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 2035 transitions. [2025-02-06 10:15:38,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:15:38,574 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:38,574 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 10:15:38,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-06 10:15:38,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:38,775 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:38,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:38,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1766694481, now seen corresponding path program 1 times [2025-02-06 10:15:38,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:38,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168545522] [2025-02-06 10:15:38,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:38,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:38,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:15:38,783 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:15:38,783 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:38,783 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:15:38,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:38,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168545522] [2025-02-06 10:15:38,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168545522] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:15:38,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:15:38,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:15:38,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132278246] [2025-02-06 10:15:38,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:15:38,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:15:38,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:38,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:15:38,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:15:38,810 INFO L87 Difference]: Start difference. First operand 1355 states and 2035 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 10:15:38,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:38,831 INFO L93 Difference]: Finished difference Result 576 states and 835 transitions. [2025-02-06 10:15:38,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:15:38,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 21 [2025-02-06 10:15:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:38,834 INFO L225 Difference]: With dead ends: 576 [2025-02-06 10:15:38,834 INFO L226 Difference]: Without dead ends: 576 [2025-02-06 10:15:38,834 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 10:15:38,835 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 45 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:38,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 170 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:38,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2025-02-06 10:15:38,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 560. [2025-02-06 10:15:38,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 548 states have (on average 1.5054744525547445) internal successors, (825), 559 states have internal predecessors, (825), 0 states have call successors, (0), 0 states 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 10:15:38,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 825 transitions. [2025-02-06 10:15:38,842 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 825 transitions. Word has length 21 [2025-02-06 10:15:38,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:38,843 INFO L471 AbstractCegarLoop]: Abstraction has 560 states and 825 transitions. [2025-02-06 10:15:38,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 10:15:38,843 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 825 transitions. [2025-02-06 10:15:38,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-06 10:15:38,844 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:38,844 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:38,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 10:15:38,844 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:38,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:38,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1339768036, now seen corresponding path program 1 times [2025-02-06 10:15:38,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:38,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968331311] [2025-02-06 10:15:38,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:38,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:38,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 10:15:38,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 10:15:38,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:38,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:38,898 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:38,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:38,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968331311] [2025-02-06 10:15:38,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968331311] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:38,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830093542] [2025-02-06 10:15:38,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:38,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:38,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:38,900 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 10:15:38,901 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 10:15:38,936 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 10:15:38,947 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 10:15:38,947 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:38,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:38,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:15:38,948 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:38,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:39,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830093542] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:39,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:39,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2025-02-06 10:15:39,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921699663] [2025-02-06 10:15:39,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:39,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:15:39,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:39,053 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:15:39,053 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:15:39,053 INFO L87 Difference]: Start difference. First operand 560 states and 825 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:39,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:39,108 INFO L93 Difference]: Finished difference Result 1652 states and 2405 transitions. [2025-02-06 10:15:39,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:15:39,108 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-02-06 10:15:39,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:39,112 INFO L225 Difference]: With dead ends: 1652 [2025-02-06 10:15:39,112 INFO L226 Difference]: Without dead ends: 1652 [2025-02-06 10:15:39,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 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 10:15:39,113 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 178 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:39,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 156 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:39,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2025-02-06 10:15:39,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1598. [2025-02-06 10:15:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1598 states, 1586 states have (on average 1.4899117276166456) internal successors, (2363), 1597 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states 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 10:15:39,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1598 states to 1598 states and 2363 transitions. [2025-02-06 10:15:39,133 INFO L78 Accepts]: Start accepts. Automaton has 1598 states and 2363 transitions. Word has length 24 [2025-02-06 10:15:39,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:39,133 INFO L471 AbstractCegarLoop]: Abstraction has 1598 states and 2363 transitions. [2025-02-06 10:15:39,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:39,134 INFO L276 IsEmpty]: Start isEmpty. Operand 1598 states and 2363 transitions. [2025-02-06 10:15:39,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-06 10:15:39,134 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:39,134 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:39,140 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 10:15:39,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:39,335 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:39,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:39,336 INFO L85 PathProgramCache]: Analyzing trace with hash 74440060, now seen corresponding path program 1 times [2025-02-06 10:15:39,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:39,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482988260] [2025-02-06 10:15:39,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:39,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:39,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 10:15:39,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 10:15:39,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:39,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:39,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482988260] [2025-02-06 10:15:39,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482988260] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:39,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010493615] [2025-02-06 10:15:39,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:39,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:39,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:39,414 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 10:15:39,421 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 10:15:39,458 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 10:15:39,473 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 10:15:39,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:39,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:39,475 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:15:39,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:39,497 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:39,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010493615] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:39,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:39,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-06 10:15:39,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949543591] [2025-02-06 10:15:39,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:39,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:15:39,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:39,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:15:39,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:15:39,534 INFO L87 Difference]: Start difference. First operand 1598 states and 2363 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 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 10:15:39,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:39,657 INFO L93 Difference]: Finished difference Result 3998 states and 5663 transitions. [2025-02-06 10:15:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:15:39,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2025-02-06 10:15:39,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:39,667 INFO L225 Difference]: With dead ends: 3998 [2025-02-06 10:15:39,668 INFO L226 Difference]: Without dead ends: 3998 [2025-02-06 10:15:39,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:15:39,668 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 263 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:39,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 399 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:15:39,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2025-02-06 10:15:39,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3704. [2025-02-06 10:15:39,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3704 states, 3692 states have (on average 1.4526002166847238) internal successors, (5363), 3703 states have internal predecessors, (5363), 0 states have call successors, (0), 0 states 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 10:15:39,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3704 states to 3704 states and 5363 transitions. [2025-02-06 10:15:39,721 INFO L78 Accepts]: Start accepts. Automaton has 3704 states and 5363 transitions. Word has length 26 [2025-02-06 10:15:39,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:39,721 INFO L471 AbstractCegarLoop]: Abstraction has 3704 states and 5363 transitions. [2025-02-06 10:15:39,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 8 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 10:15:39,721 INFO L276 IsEmpty]: Start isEmpty. Operand 3704 states and 5363 transitions. [2025-02-06 10:15:39,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2025-02-06 10:15:39,722 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:39,722 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:39,731 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 10:15:39,925 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,SelfDestructingSolverStorable12 [2025-02-06 10:15:39,925 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:39,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash 401162682, now seen corresponding path program 1 times [2025-02-06 10:15:39,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:39,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951009111] [2025-02-06 10:15:39,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:39,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:39,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 10:15:39,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 10:15:39,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:39,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:40,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:15:40,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:40,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951009111] [2025-02-06 10:15:40,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951009111] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:40,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708328986] [2025-02-06 10:15:40,000 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:40,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:40,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:40,002 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 10:15:40,006 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 10:15:40,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-02-06 10:15:40,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-02-06 10:15:40,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:40,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:40,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:15:40,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:40,077 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:15:40,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:15:40,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708328986] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:40,097 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:40,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 7 [2025-02-06 10:15:40,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839060629] [2025-02-06 10:15:40,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:40,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:15:40,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:40,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:15:40,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:15:40,100 INFO L87 Difference]: Start difference. First operand 3704 states and 5363 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 10:15:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:40,163 INFO L93 Difference]: Finished difference Result 1080 states and 1503 transitions. [2025-02-06 10:15:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:15:40,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 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 10:15:40,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:40,166 INFO L225 Difference]: With dead ends: 1080 [2025-02-06 10:15:40,166 INFO L226 Difference]: Without dead ends: 1080 [2025-02-06 10:15:40,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:15:40,167 INFO L435 NwaCegarLoop]: 90 mSDtfsCounter, 85 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:40,168 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 351 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2025-02-06 10:15:40,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 876. [2025-02-06 10:15:40,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 864 states have (on average 1.4293981481481481) internal successors, (1235), 875 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states 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 10:15:40,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1235 transitions. [2025-02-06 10:15:40,182 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1235 transitions. Word has length 27 [2025-02-06 10:15:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:40,183 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1235 transitions. [2025-02-06 10:15:40,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states 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 10:15:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1235 transitions. [2025-02-06 10:15:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-06 10:15:40,184 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:40,185 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:40,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-06 10:15:40,385 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,SelfDestructingSolverStorable13 [2025-02-06 10:15:40,386 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:40,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1125165923, now seen corresponding path program 2 times [2025-02-06 10:15:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:40,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676142222] [2025-02-06 10:15:40,387 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:15:40,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:40,402 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-02-06 10:15:40,408 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-06 10:15:40,409 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:15:40,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:40,549 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-06 10:15:40,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:40,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676142222] [2025-02-06 10:15:40,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676142222] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:40,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211149709] [2025-02-06 10:15:40,550 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:15:40,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:40,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:40,552 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 10:15:40,553 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 10:15:40,605 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 50 statements into 2 equivalence classes. [2025-02-06 10:15:40,637 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 50 of 50 statements. [2025-02-06 10:15:40,637 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:15:40,638 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:40,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 10:15:40,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:40,727 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:40,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 19 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:15:40,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211149709] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:40,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:40,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 13 [2025-02-06 10:15:40,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166337316] [2025-02-06 10:15:40,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:40,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 10:15:40,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:40,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 10:15:40,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:15:40,816 INFO L87 Difference]: Start difference. First operand 876 states and 1235 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 10:15:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:41,551 INFO L93 Difference]: Finished difference Result 1497 states and 2003 transitions. [2025-02-06 10:15:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2025-02-06 10:15:41,551 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-02-06 10:15:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:41,554 INFO L225 Difference]: With dead ends: 1497 [2025-02-06 10:15:41,554 INFO L226 Difference]: Without dead ends: 1478 [2025-02-06 10:15:41,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 87 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=734, Invalid=3298, Unknown=0, NotChecked=0, Total=4032 [2025-02-06 10:15:41,557 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 881 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:41,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 845 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:15:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2025-02-06 10:15:41,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1333. [2025-02-06 10:15:41,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1321 states have (on average 1.408781226343679) internal successors, (1861), 1332 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states 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 10:15:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1861 transitions. [2025-02-06 10:15:41,572 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1861 transitions. Word has length 50 [2025-02-06 10:15:41,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:41,572 INFO L471 AbstractCegarLoop]: Abstraction has 1333 states and 1861 transitions. [2025-02-06 10:15:41,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 10:15:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1861 transitions. [2025-02-06 10:15:41,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-02-06 10:15:41,574 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:41,574 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:41,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 10:15:41,778 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,SelfDestructingSolverStorable14 [2025-02-06 10:15:41,779 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:41,779 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:41,779 INFO L85 PathProgramCache]: Analyzing trace with hash 316141402, now seen corresponding path program 1 times [2025-02-06 10:15:41,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:41,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494237342] [2025-02-06 10:15:41,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:41,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:41,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 10:15:41,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 10:15:41,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:41,798 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 36 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-06 10:15:41,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:41,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494237342] [2025-02-06 10:15:41,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494237342] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:41,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900234531] [2025-02-06 10:15:41,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:41,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:41,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:41,861 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 10:15:41,862 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 10:15:41,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-02-06 10:15:41,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-02-06 10:15:41,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:41,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:41,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:15:41,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-06 10:15:41,981 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2025-02-06 10:15:42,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900234531] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:42,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:42,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 12 [2025-02-06 10:15:42,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324287386] [2025-02-06 10:15:42,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:42,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:15:42,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:42,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:15:42,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:15:42,080 INFO L87 Difference]: Start difference. First operand 1333 states and 1861 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:43,466 INFO L93 Difference]: Finished difference Result 3547 states and 4827 transitions. [2025-02-06 10:15:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2025-02-06 10:15:43,466 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-02-06 10:15:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:43,474 INFO L225 Difference]: With dead ends: 3547 [2025-02-06 10:15:43,474 INFO L226 Difference]: Without dead ends: 3547 [2025-02-06 10:15:43,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1420 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=881, Invalid=3675, Unknown=0, NotChecked=0, Total=4556 [2025-02-06 10:15:43,476 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 666 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:43,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [666 Valid, 997 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 10:15:43,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3547 states. [2025-02-06 10:15:43,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3547 to 2920. [2025-02-06 10:15:43,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2909 states have (on average 1.420075627363355) internal successors, (4131), 2919 states have internal predecessors, (4131), 0 states have call successors, (0), 0 states 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 10:15:43,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4131 transitions. [2025-02-06 10:15:43,516 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4131 transitions. Word has length 51 [2025-02-06 10:15:43,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:43,516 INFO L471 AbstractCegarLoop]: Abstraction has 2920 states and 4131 transitions. [2025-02-06 10:15:43,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:43,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4131 transitions. [2025-02-06 10:15:43,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-06 10:15:43,517 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:43,517 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:43,523 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 10:15:43,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:43,718 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:43,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:43,719 INFO L85 PathProgramCache]: Analyzing trace with hash -362684768, now seen corresponding path program 1 times [2025-02-06 10:15:43,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:43,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047085035] [2025-02-06 10:15:43,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:43,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:43,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-06 10:15:43,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 10:15:43,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:43,733 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:43,860 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-06 10:15:43,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:43,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047085035] [2025-02-06 10:15:43,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047085035] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:43,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322824032] [2025-02-06 10:15:43,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:43,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:43,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:43,863 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 10:15:43,868 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 10:15:43,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-06 10:15:43,948 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 10:15:43,948 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:43,948 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:43,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:15:43,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 85 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-06 10:15:43,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 85 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-06 10:15:44,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322824032] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:44,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:44,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2025-02-06 10:15:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476217044] [2025-02-06 10:15:44,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:44,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:15:44,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:44,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:15:44,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:15:44,046 INFO L87 Difference]: Start difference. First operand 2920 states and 4131 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 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 10:15:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:44,202 INFO L93 Difference]: Finished difference Result 3173 states and 4305 transitions. [2025-02-06 10:15:44,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 10:15:44,202 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 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 58 [2025-02-06 10:15:44,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:44,208 INFO L225 Difference]: With dead ends: 3173 [2025-02-06 10:15:44,208 INFO L226 Difference]: Without dead ends: 3173 [2025-02-06 10:15:44,209 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 113 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2025-02-06 10:15:44,209 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 344 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:44,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 679 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:15:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2025-02-06 10:15:44,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 2371. [2025-02-06 10:15:44,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2360 states have (on average 1.3872881355932203) internal successors, (3274), 2370 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states 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 10:15:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3274 transitions. [2025-02-06 10:15:44,232 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3274 transitions. Word has length 58 [2025-02-06 10:15:44,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:44,233 INFO L471 AbstractCegarLoop]: Abstraction has 2371 states and 3274 transitions. [2025-02-06 10:15:44,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 12 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 10:15:44,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3274 transitions. [2025-02-06 10:15:44,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-06 10:15:44,234 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:44,234 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:44,242 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 10:15:44,438 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,SelfDestructingSolverStorable16 [2025-02-06 10:15:44,438 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:44,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:44,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1269603243, now seen corresponding path program 1 times [2025-02-06 10:15:44,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:44,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924673412] [2025-02-06 10:15:44,439 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:44,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:44,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-06 10:15:44,449 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 10:15:44,449 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:44,449 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-02-06 10:15:44,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:44,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924673412] [2025-02-06 10:15:44,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924673412] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:44,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021873784] [2025-02-06 10:15:44,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:44,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:44,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:44,525 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 10:15:44,526 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 10:15:44,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-06 10:15:44,597 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 10:15:44,597 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:44,597 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:44,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 10:15:44,599 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-06 10:15:44,639 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2025-02-06 10:15:44,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021873784] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:44,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:15:44,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2025-02-06 10:15:44,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703343643] [2025-02-06 10:15:44,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:15:44,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:15:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:44,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:15:44,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:15:44,673 INFO L87 Difference]: Start difference. First operand 2371 states and 3274 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 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 10:15:44,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:44,734 INFO L93 Difference]: Finished difference Result 3719 states and 5083 transitions. [2025-02-06 10:15:44,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:15:44,735 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 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) Word has length 58 [2025-02-06 10:15:44,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:44,741 INFO L225 Difference]: With dead ends: 3719 [2025-02-06 10:15:44,742 INFO L226 Difference]: Without dead ends: 3719 [2025-02-06 10:15:44,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:15:44,742 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 59 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:44,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 333 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:44,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3719 states. [2025-02-06 10:15:44,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3719 to 3582. [2025-02-06 10:15:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3582 states, 3571 states have (on average 1.3864463735648278) internal successors, (4951), 3581 states have internal predecessors, (4951), 0 states have call successors, (0), 0 states 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 10:15:44,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3582 states to 3582 states and 4951 transitions. [2025-02-06 10:15:44,786 INFO L78 Accepts]: Start accepts. Automaton has 3582 states and 4951 transitions. Word has length 58 [2025-02-06 10:15:44,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:44,786 INFO L471 AbstractCegarLoop]: Abstraction has 3582 states and 4951 transitions. [2025-02-06 10:15:44,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 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 10:15:44,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3582 states and 4951 transitions. [2025-02-06 10:15:44,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-02-06 10:15:44,788 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:44,788 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:44,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-06 10:15:44,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-06 10:15:44,992 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:44,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:44,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1374393815, now seen corresponding path program 1 times [2025-02-06 10:15:44,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:44,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505917299] [2025-02-06 10:15:44,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:44,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:45,002 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-06 10:15:45,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-06 10:15:45,009 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:45,009 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2025-02-06 10:15:45,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505917299] [2025-02-06 10:15:45,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505917299] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661634114] [2025-02-06 10:15:45,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:45,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:45,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:45,115 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 10:15:45,116 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 10:15:45,171 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-02-06 10:15:45,196 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-02-06 10:15:45,196 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:45,196 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:45,197 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:15:45,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:45,251 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 101 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-06 10:15:45,251 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 103 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-06 10:15:45,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661634114] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:45,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:45,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 14 [2025-02-06 10:15:45,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219639474] [2025-02-06 10:15:45,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:45,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 10:15:45,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:45,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 10:15:45,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2025-02-06 10:15:45,301 INFO L87 Difference]: Start difference. First operand 3582 states and 4951 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:45,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:45,621 INFO L93 Difference]: Finished difference Result 7502 states and 10313 transitions. [2025-02-06 10:15:45,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-02-06 10:15:45,622 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2025-02-06 10:15:45,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:45,634 INFO L225 Difference]: With dead ends: 7502 [2025-02-06 10:15:45,634 INFO L226 Difference]: Without dead ends: 7502 [2025-02-06 10:15:45,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=405, Invalid=1317, Unknown=0, NotChecked=0, Total=1722 [2025-02-06 10:15:45,635 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 390 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:45,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 765 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:15:45,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7502 states. [2025-02-06 10:15:45,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7502 to 4143. [2025-02-06 10:15:45,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4143 states, 4132 states have (on average 1.382623426911907) internal successors, (5713), 4142 states have internal predecessors, (5713), 0 states have call successors, (0), 0 states 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 10:15:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4143 states to 4143 states and 5713 transitions. [2025-02-06 10:15:45,680 INFO L78 Accepts]: Start accepts. Automaton has 4143 states and 5713 transitions. Word has length 62 [2025-02-06 10:15:45,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:45,680 INFO L471 AbstractCegarLoop]: Abstraction has 4143 states and 5713 transitions. [2025-02-06 10:15:45,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 14 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:45,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4143 states and 5713 transitions. [2025-02-06 10:15:45,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2025-02-06 10:15:45,681 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:45,681 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:45,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 10:15:45,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:45,886 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:45,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:45,887 INFO L85 PathProgramCache]: Analyzing trace with hash -2065252914, now seen corresponding path program 1 times [2025-02-06 10:15:45,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:45,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868118682] [2025-02-06 10:15:45,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:45,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:45,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 10:15:45,909 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 10:15:45,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:45,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-06 10:15:45,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:45,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868118682] [2025-02-06 10:15:45,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868118682] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:45,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786075765] [2025-02-06 10:15:45,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:45,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:45,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:45,984 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 10:15:45,985 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 10:15:46,039 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 63 statements into 1 equivalence classes. [2025-02-06 10:15:46,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 63 of 63 statements. [2025-02-06 10:15:46,060 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:46,060 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:46,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:15:46,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-06 10:15:46,105 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-02-06 10:15:46,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1786075765] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:46,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:46,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-02-06 10:15:46,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188468833] [2025-02-06 10:15:46,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:46,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:15:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:46,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:15:46,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:15:46,150 INFO L87 Difference]: Start difference. First operand 4143 states and 5713 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 10:15:46,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:46,202 INFO L93 Difference]: Finished difference Result 4150 states and 5711 transitions. [2025-02-06 10:15:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:15:46,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2025-02-06 10:15:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:46,207 INFO L225 Difference]: With dead ends: 4150 [2025-02-06 10:15:46,207 INFO L226 Difference]: Without dead ends: 4150 [2025-02-06 10:15:46,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:15:46,208 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 109 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:46,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 253 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:46,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4150 states. [2025-02-06 10:15:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4150 to 4141. [2025-02-06 10:15:46,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4141 states, 4130 states have (on average 1.3818401937046005) internal successors, (5707), 4140 states have internal predecessors, (5707), 0 states have call successors, (0), 0 states 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 10:15:46,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4141 states to 4141 states and 5707 transitions. [2025-02-06 10:15:46,238 INFO L78 Accepts]: Start accepts. Automaton has 4141 states and 5707 transitions. Word has length 63 [2025-02-06 10:15:46,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:46,238 INFO L471 AbstractCegarLoop]: Abstraction has 4141 states and 5707 transitions. [2025-02-06 10:15:46,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states 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 10:15:46,238 INFO L276 IsEmpty]: Start isEmpty. Operand 4141 states and 5707 transitions. [2025-02-06 10:15:46,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2025-02-06 10:15:46,239 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:46,239 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:46,246 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 10:15:46,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:46,444 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:46,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:46,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1321596033, now seen corresponding path program 1 times [2025-02-06 10:15:46,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:46,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086167361] [2025-02-06 10:15:46,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:46,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:46,452 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-06 10:15:46,457 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-06 10:15:46,457 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:46,457 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:46,531 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-02-06 10:15:46,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:46,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086167361] [2025-02-06 10:15:46,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086167361] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:46,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524307961] [2025-02-06 10:15:46,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:46,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:46,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:46,534 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 10:15:46,535 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 10:15:46,588 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-02-06 10:15:46,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-02-06 10:15:46,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:46,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:46,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 10:15:46,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-06 10:15:46,646 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 97 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-06 10:15:46,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524307961] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:46,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:46,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2025-02-06 10:15:46,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017489613] [2025-02-06 10:15:46,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:46,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:15:46,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:46,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:15:46,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:15:46,685 INFO L87 Difference]: Start difference. First operand 4141 states and 5707 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 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 10:15:46,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:46,806 INFO L93 Difference]: Finished difference Result 4429 states and 6032 transitions. [2025-02-06 10:15:46,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:15:46,807 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 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 64 [2025-02-06 10:15:46,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:46,812 INFO L225 Difference]: With dead ends: 4429 [2025-02-06 10:15:46,812 INFO L226 Difference]: Without dead ends: 4429 [2025-02-06 10:15:46,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2025-02-06 10:15:46,812 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 173 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:46,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 655 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:15:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4429 states. [2025-02-06 10:15:46,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4429 to 3666. [2025-02-06 10:15:46,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3655 states have (on average 1.3822161422708619) internal successors, (5052), 3665 states have internal predecessors, (5052), 0 states have call successors, (0), 0 states 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 10:15:46,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 5052 transitions. [2025-02-06 10:15:46,837 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 5052 transitions. Word has length 64 [2025-02-06 10:15:46,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:46,837 INFO L471 AbstractCegarLoop]: Abstraction has 3666 states and 5052 transitions. [2025-02-06 10:15:46,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 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 10:15:46,838 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 5052 transitions. [2025-02-06 10:15:46,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-02-06 10:15:46,839 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:46,839 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:46,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2025-02-06 10:15:47,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:47,040 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:47,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:47,040 INFO L85 PathProgramCache]: Analyzing trace with hash -2063606598, now seen corresponding path program 1 times [2025-02-06 10:15:47,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:47,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140264439] [2025-02-06 10:15:47,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:47,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:47,084 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 10:15:47,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 10:15:47,099 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:47,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:47,312 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-06 10:15:47,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:47,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140264439] [2025-02-06 10:15:47,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140264439] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:47,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655019641] [2025-02-06 10:15:47,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:47,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:47,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:47,316 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 10:15:47,317 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 10:15:47,375 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 69 statements into 1 equivalence classes. [2025-02-06 10:15:47,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 69 of 69 statements. [2025-02-06 10:15:47,399 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:47,399 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:47,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:15:47,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:47,415 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 10:15:47,580 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-06 10:15:47,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:47,810 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2025-02-06 10:15:47,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655019641] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:47,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:47,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2025-02-06 10:15:47,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585152956] [2025-02-06 10:15:47,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:47,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:15:47,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:47,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:15:47,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:15:47,815 INFO L87 Difference]: Start difference. First operand 3666 states and 5052 transitions. Second operand has 13 states, 12 states have (on average 9.5) internal successors, (114), 13 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 10:15:48,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:48,078 INFO L93 Difference]: Finished difference Result 7048 states and 9495 transitions. [2025-02-06 10:15:48,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:15:48,079 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 9.5) internal successors, (114), 13 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 69 [2025-02-06 10:15:48,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:48,087 INFO L225 Difference]: With dead ends: 7048 [2025-02-06 10:15:48,087 INFO L226 Difference]: Without dead ends: 7048 [2025-02-06 10:15:48,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=126, Invalid=254, Unknown=0, NotChecked=0, Total=380 [2025-02-06 10:15:48,089 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 693 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:48,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 573 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:15:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7048 states. [2025-02-06 10:15:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7048 to 5332. [2025-02-06 10:15:48,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5332 states, 5321 states have (on average 1.3948505919939862) internal successors, (7422), 5331 states have internal predecessors, (7422), 0 states have call successors, (0), 0 states 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 10:15:48,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5332 states to 5332 states and 7422 transitions. [2025-02-06 10:15:48,145 INFO L78 Accepts]: Start accepts. Automaton has 5332 states and 7422 transitions. Word has length 69 [2025-02-06 10:15:48,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:48,145 INFO L471 AbstractCegarLoop]: Abstraction has 5332 states and 7422 transitions. [2025-02-06 10:15:48,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 9.5) internal successors, (114), 13 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 10:15:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 5332 states and 7422 transitions. [2025-02-06 10:15:48,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2025-02-06 10:15:48,148 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:48,148 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:48,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2025-02-06 10:15:48,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:48,349 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:48,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:48,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1053607504, now seen corresponding path program 1 times [2025-02-06 10:15:48,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:48,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325228334] [2025-02-06 10:15:48,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:48,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:48,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-06 10:15:48,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-06 10:15:48,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:48,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:48,438 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 82 proven. 2 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2025-02-06 10:15:48,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:48,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325228334] [2025-02-06 10:15:48,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325228334] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:48,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162534872] [2025-02-06 10:15:48,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:48,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:48,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:48,440 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 10:15:48,442 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 10:15:48,504 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 70 statements into 1 equivalence classes. [2025-02-06 10:15:48,523 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 70 of 70 statements. [2025-02-06 10:15:48,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:48,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:48,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:15:48,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:48,589 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 83 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-06 10:15:48,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:48,627 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 83 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-02-06 10:15:48,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162534872] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:48,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:48,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-06 10:15:48,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894578667] [2025-02-06 10:15:48,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:48,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:15:48,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:48,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:15:48,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:15:48,628 INFO L87 Difference]: Start difference. First operand 5332 states and 7422 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:48,768 INFO L93 Difference]: Finished difference Result 2939 states and 3953 transitions. [2025-02-06 10:15:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 10:15:48,769 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2025-02-06 10:15:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:48,772 INFO L225 Difference]: With dead ends: 2939 [2025-02-06 10:15:48,772 INFO L226 Difference]: Without dead ends: 2939 [2025-02-06 10:15:48,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2025-02-06 10:15:48,773 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 182 mSDsluCounter, 1193 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:48,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1367 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:15:48,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2025-02-06 10:15:48,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 2832. [2025-02-06 10:15:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2821 states have (on average 1.3683091102445941) internal successors, (3860), 2831 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states 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 10:15:48,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 3860 transitions. [2025-02-06 10:15:48,792 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 3860 transitions. Word has length 70 [2025-02-06 10:15:48,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:48,792 INFO L471 AbstractCegarLoop]: Abstraction has 2832 states and 3860 transitions. [2025-02-06 10:15:48,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:48,793 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 3860 transitions. [2025-02-06 10:15:48,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2025-02-06 10:15:48,794 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:48,794 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 6, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:48,800 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 10:15:48,994 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,SelfDestructingSolverStorable22 [2025-02-06 10:15:48,994 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:48,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:48,995 INFO L85 PathProgramCache]: Analyzing trace with hash -233213314, now seen corresponding path program 1 times [2025-02-06 10:15:48,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:48,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863533007] [2025-02-06 10:15:48,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:48,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:49,003 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 10:15:49,009 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:15:49,010 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:49,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2025-02-06 10:15:49,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863533007] [2025-02-06 10:15:49,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863533007] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:49,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063990792] [2025-02-06 10:15:49,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:49,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:49,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:49,111 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 10:15:49,113 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 10:15:49,178 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-02-06 10:15:49,209 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-02-06 10:15:49,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:49,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:49,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 10:15:49,214 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 117 proven. 57 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-02-06 10:15:49,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:49,365 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 117 proven. 57 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-02-06 10:15:49,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063990792] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:49,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:49,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2025-02-06 10:15:49,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688478707] [2025-02-06 10:15:49,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:49,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:15:49,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:49,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:15:49,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:15:49,367 INFO L87 Difference]: Start difference. First operand 2832 states and 3860 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 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 10:15:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:49,564 INFO L93 Difference]: Finished difference Result 5830 states and 7607 transitions. [2025-02-06 10:15:49,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 10:15:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 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) Word has length 93 [2025-02-06 10:15:49,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:49,572 INFO L225 Difference]: With dead ends: 5830 [2025-02-06 10:15:49,572 INFO L226 Difference]: Without dead ends: 5830 [2025-02-06 10:15:49,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2025-02-06 10:15:49,573 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 170 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:49,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 866 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:15:49,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5830 states. [2025-02-06 10:15:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5830 to 5206. [2025-02-06 10:15:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5206 states, 5195 states have (on average 1.3049085659287776) internal successors, (6779), 5205 states have internal predecessors, (6779), 0 states have call successors, (0), 0 states 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 10:15:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 6779 transitions. [2025-02-06 10:15:49,620 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 6779 transitions. Word has length 93 [2025-02-06 10:15:49,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:49,620 INFO L471 AbstractCegarLoop]: Abstraction has 5206 states and 6779 transitions. [2025-02-06 10:15:49,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 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 10:15:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 6779 transitions. [2025-02-06 10:15:49,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2025-02-06 10:15:49,623 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:49,623 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 7, 6, 5, 5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:49,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2025-02-06 10:15:49,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-06 10:15:49,827 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:49,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:49,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1809122437, now seen corresponding path program 1 times [2025-02-06 10:15:49,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:49,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426559433] [2025-02-06 10:15:49,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:49,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:49,835 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-06 10:15:49,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-06 10:15:49,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:49,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:49,916 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 156 proven. 1 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2025-02-06 10:15:49,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:49,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426559433] [2025-02-06 10:15:49,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426559433] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:49,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059400307] [2025-02-06 10:15:49,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:49,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:49,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:49,920 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 10:15:49,922 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 10:15:49,986 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 103 statements into 1 equivalence classes. [2025-02-06 10:15:50,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 103 of 103 statements. [2025-02-06 10:15:50,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:50,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:50,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 10:15:50,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:50,111 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 244 proven. 4 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2025-02-06 10:15:50,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 244 proven. 4 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2025-02-06 10:15:50,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059400307] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:50,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:50,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2025-02-06 10:15:50,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336395986] [2025-02-06 10:15:50,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:50,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:15:50,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:50,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:15:50,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:15:50,215 INFO L87 Difference]: Start difference. First operand 5206 states and 6779 transitions. Second operand has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:50,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:50,304 INFO L93 Difference]: Finished difference Result 4608 states and 5711 transitions. [2025-02-06 10:15:50,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-06 10:15:50,304 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2025-02-06 10:15:50,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:50,309 INFO L225 Difference]: With dead ends: 4608 [2025-02-06 10:15:50,310 INFO L226 Difference]: Without dead ends: 4608 [2025-02-06 10:15:50,310 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 199 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2025-02-06 10:15:50,310 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 226 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:50,310 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 691 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:50,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4608 states. [2025-02-06 10:15:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4608 to 3947. [2025-02-06 10:15:50,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 3937 states have (on average 1.2621285242570486) internal successors, (4969), 3946 states have internal predecessors, (4969), 0 states have call successors, (0), 0 states 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 10:15:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 4969 transitions. [2025-02-06 10:15:50,358 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 4969 transitions. Word has length 103 [2025-02-06 10:15:50,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:50,358 INFO L471 AbstractCegarLoop]: Abstraction has 3947 states and 4969 transitions. [2025-02-06 10:15:50,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.923076923076923) internal successors, (155), 13 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:50,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 4969 transitions. [2025-02-06 10:15:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2025-02-06 10:15:50,360 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:50,360 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:50,367 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 10:15:50,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,17 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:50,562 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:50,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:50,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1400169243, now seen corresponding path program 1 times [2025-02-06 10:15:50,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:50,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300774549] [2025-02-06 10:15:50,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:50,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:50,573 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-06 10:15:50,583 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-06 10:15:50,583 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:50,583 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:50,634 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 134 proven. 104 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-06 10:15:50,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:50,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300774549] [2025-02-06 10:15:50,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300774549] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:50,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119288590] [2025-02-06 10:15:50,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:50,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:50,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:50,637 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 10:15:50,642 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 10:15:50,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-02-06 10:15:50,744 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-02-06 10:15:50,744 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:50,744 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:50,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-02-06 10:15:50,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-02-06 10:15:50,807 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:15:50,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119288590] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:15:50,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:15:50,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2025-02-06 10:15:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485462571] [2025-02-06 10:15:50,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:15:50,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:15:50,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:50,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:15:50,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:15:50,808 INFO L87 Difference]: Start difference. First operand 3947 states and 4969 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:50,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:50,830 INFO L93 Difference]: Finished difference Result 4239 states and 5233 transitions. [2025-02-06 10:15:50,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:15:50,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2025-02-06 10:15:50,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:50,836 INFO L225 Difference]: With dead ends: 4239 [2025-02-06 10:15:50,836 INFO L226 Difference]: Without dead ends: 4239 [2025-02-06 10:15:50,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:15:50,837 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 49 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:50,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 132 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:15:50,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2025-02-06 10:15:50,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3947. [2025-02-06 10:15:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 3937 states have (on average 1.2448564897129795) internal successors, (4901), 3946 states have internal predecessors, (4901), 0 states have call successors, (0), 0 states 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 10:15:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 4901 transitions. [2025-02-06 10:15:50,866 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 4901 transitions. Word has length 105 [2025-02-06 10:15:50,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:50,867 INFO L471 AbstractCegarLoop]: Abstraction has 3947 states and 4901 transitions. [2025-02-06 10:15:50,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 4901 transitions. [2025-02-06 10:15:50,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2025-02-06 10:15:50,868 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:50,868 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:50,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2025-02-06 10:15:51,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,18 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:51,070 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:51,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:51,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1815608501, now seen corresponding path program 1 times [2025-02-06 10:15:51,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:51,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837953398] [2025-02-06 10:15:51,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:51,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:51,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-06 10:15:51,095 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-06 10:15:51,095 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:51,095 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 147 proven. 3 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2025-02-06 10:15:51,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:51,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837953398] [2025-02-06 10:15:51,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837953398] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:51,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039191462] [2025-02-06 10:15:51,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:51,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:51,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:51,184 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 10:15:51,185 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 10:15:51,260 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 107 statements into 1 equivalence classes. [2025-02-06 10:15:51,290 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 107 of 107 statements. [2025-02-06 10:15:51,290 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:51,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:51,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 10:15:51,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 231 proven. 10 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-06 10:15:51,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 231 proven. 10 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2025-02-06 10:15:51,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039191462] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:51,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:51,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 12 [2025-02-06 10:15:51,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83553443] [2025-02-06 10:15:51,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:51,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:15:51,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:51,522 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:15:51,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:15:51,522 INFO L87 Difference]: Start difference. First operand 3947 states and 4901 transitions. Second operand has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:51,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:51,637 INFO L93 Difference]: Finished difference Result 3108 states and 3654 transitions. [2025-02-06 10:15:51,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:15:51,659 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2025-02-06 10:15:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:51,663 INFO L225 Difference]: With dead ends: 3108 [2025-02-06 10:15:51,663 INFO L226 Difference]: Without dead ends: 3108 [2025-02-06 10:15:51,663 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 207 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2025-02-06 10:15:51,664 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 191 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:51,664 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 692 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:15:51,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3108 states. [2025-02-06 10:15:51,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3108 to 2422. [2025-02-06 10:15:51,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 2412 states have (on average 1.187396351575456) internal successors, (2864), 2421 states have internal predecessors, (2864), 0 states have call successors, (0), 0 states 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 10:15:51,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 2864 transitions. [2025-02-06 10:15:51,676 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 2864 transitions. Word has length 107 [2025-02-06 10:15:51,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:51,676 INFO L471 AbstractCegarLoop]: Abstraction has 2422 states and 2864 transitions. [2025-02-06 10:15:51,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.916666666666666) internal successors, (119), 12 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 2864 transitions. [2025-02-06 10:15:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-06 10:15:51,678 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:51,678 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:51,684 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2025-02-06 10:15:51,878 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,SelfDestructingSolverStorable26 [2025-02-06 10:15:51,879 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:51,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:51,879 INFO L85 PathProgramCache]: Analyzing trace with hash -991710924, now seen corresponding path program 1 times [2025-02-06 10:15:51,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:51,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836633017] [2025-02-06 10:15:51,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:51,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:51,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-06 10:15:51,894 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-06 10:15:51,894 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:51,894 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:51,952 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 190 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:15:51,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:51,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836633017] [2025-02-06 10:15:51,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836633017] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:51,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825266202] [2025-02-06 10:15:51,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:51,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:51,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:51,954 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 10:15:51,958 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 10:15:52,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-06 10:15:52,063 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-06 10:15:52,064 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:52,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:52,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 10:15:52,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 166 proven. 24 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2025-02-06 10:15:52,221 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:52,333 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 166 proven. 24 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2025-02-06 10:15:52,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825266202] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:52,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:52,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2025-02-06 10:15:52,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886409268] [2025-02-06 10:15:52,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:52,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:15:52,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:52,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:15:52,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:15:52,334 INFO L87 Difference]: Start difference. First operand 2422 states and 2864 transitions. Second operand has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 10:15:52,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:52,950 INFO L93 Difference]: Finished difference Result 6279 states and 7339 transitions. [2025-02-06 10:15:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-02-06 10:15:52,951 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 0 states have call successors, (0), 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 111 [2025-02-06 10:15:52,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:52,956 INFO L225 Difference]: With dead ends: 6279 [2025-02-06 10:15:52,956 INFO L226 Difference]: Without dead ends: 6279 [2025-02-06 10:15:52,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=469, Invalid=1253, Unknown=0, NotChecked=0, Total=1722 [2025-02-06 10:15:52,957 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 996 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:52,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 860 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:15:52,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6279 states. [2025-02-06 10:15:52,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6279 to 2423. [2025-02-06 10:15:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2413 states have (on average 1.1848321591380024) internal successors, (2859), 2422 states have internal predecessors, (2859), 0 states have call successors, (0), 0 states 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 10:15:52,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 2859 transitions. [2025-02-06 10:15:52,976 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 2859 transitions. Word has length 111 [2025-02-06 10:15:52,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:52,976 INFO L471 AbstractCegarLoop]: Abstraction has 2423 states and 2859 transitions. [2025-02-06 10:15:52,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.0) internal successors, (143), 11 states have internal predecessors, (143), 0 states have call successors, (0), 0 states 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 10:15:52,977 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 2859 transitions. [2025-02-06 10:15:52,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-06 10:15:52,978 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:52,978 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:52,987 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 10:15:53,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:53,179 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:53,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:53,179 INFO L85 PathProgramCache]: Analyzing trace with hash -991710572, now seen corresponding path program 1 times [2025-02-06 10:15:53,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:53,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652471617] [2025-02-06 10:15:53,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:53,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:53,188 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-06 10:15:53,193 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-06 10:15:53,193 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:53,193 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:53,234 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 158 proven. 16 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2025-02-06 10:15:53,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:53,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652471617] [2025-02-06 10:15:53,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652471617] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:53,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993839854] [2025-02-06 10:15:53,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:53,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:53,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:53,236 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 10:15:53,238 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 10:15:53,314 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-06 10:15:53,346 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-06 10:15:53,346 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:53,346 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:53,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 10:15:53,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:53,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-02-06 10:15:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 190 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:15:53,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 190 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:15:53,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993839854] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:53,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:53,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 5 [2025-02-06 10:15:53,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117134750] [2025-02-06 10:15:53,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:53,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:15:53,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:53,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:15:53,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:15:53,537 INFO L87 Difference]: Start difference. First operand 2423 states and 2859 transitions. Second operand has 6 states, 5 states have (on average 18.6) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:53,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:53,721 INFO L93 Difference]: Finished difference Result 3346 states and 3904 transitions. [2025-02-06 10:15:53,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:15:53,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2025-02-06 10:15:53,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:53,724 INFO L225 Difference]: With dead ends: 3346 [2025-02-06 10:15:53,724 INFO L226 Difference]: Without dead ends: 3346 [2025-02-06 10:15:53,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:15:53,729 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 284 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:53,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 412 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:15:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2025-02-06 10:15:53,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 2423. [2025-02-06 10:15:53,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2414 states have (on average 1.1847555923777962) internal successors, (2860), 2422 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states 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 10:15:53,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 2860 transitions. [2025-02-06 10:15:53,746 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 2860 transitions. Word has length 111 [2025-02-06 10:15:53,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:53,746 INFO L471 AbstractCegarLoop]: Abstraction has 2423 states and 2860 transitions. [2025-02-06 10:15:53,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.6) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:15:53,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 2860 transitions. [2025-02-06 10:15:53,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-06 10:15:53,748 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:53,748 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:53,756 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 10:15:53,948 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,SelfDestructingSolverStorable28 [2025-02-06 10:15:53,949 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:53,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash -991710571, now seen corresponding path program 1 times [2025-02-06 10:15:53,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:53,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941271226] [2025-02-06 10:15:53,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:53,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:53,958 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-06 10:15:53,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-06 10:15:53,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:53,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 190 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:15:54,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:54,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941271226] [2025-02-06 10:15:54,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941271226] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:54,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810548869] [2025-02-06 10:15:54,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:54,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:54,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:54,125 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 10:15:54,126 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 10:15:54,211 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 111 statements into 1 equivalence classes. [2025-02-06 10:15:54,248 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 111 of 111 statements. [2025-02-06 10:15:54,248 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:54,248 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:54,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:15:54,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:54,257 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 10:15:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 190 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:15:54,524 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 190 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:15:54,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810548869] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:54,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:54,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2025-02-06 10:15:54,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156227338] [2025-02-06 10:15:54,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:54,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 10:15:54,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:54,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 10:15:54,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:15:54,807 INFO L87 Difference]: Start difference. First operand 2423 states and 2860 transitions. Second operand has 16 states, 15 states have (on average 12.8) internal successors, (192), 16 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 10:15:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:55,421 INFO L93 Difference]: Finished difference Result 6893 states and 8090 transitions. [2025-02-06 10:15:55,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-06 10:15:55,422 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 12.8) internal successors, (192), 16 states have internal predecessors, (192), 0 states have call successors, (0), 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 111 [2025-02-06 10:15:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:55,427 INFO L225 Difference]: With dead ends: 6893 [2025-02-06 10:15:55,427 INFO L226 Difference]: Without dead ends: 6893 [2025-02-06 10:15:55,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=350, Invalid=910, Unknown=0, NotChecked=0, Total=1260 [2025-02-06 10:15:55,428 INFO L435 NwaCegarLoop]: 121 mSDtfsCounter, 1077 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:55,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1144 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:15:55,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6893 states. [2025-02-06 10:15:55,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6893 to 2538. [2025-02-06 10:15:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 2529 states have (on average 1.188612099644128) internal successors, (3006), 2537 states have internal predecessors, (3006), 0 states have call successors, (0), 0 states 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 10:15:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 3006 transitions. [2025-02-06 10:15:55,456 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 3006 transitions. Word has length 111 [2025-02-06 10:15:55,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:55,456 INFO L471 AbstractCegarLoop]: Abstraction has 2538 states and 3006 transitions. [2025-02-06 10:15:55,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 12.8) internal successors, (192), 16 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 10:15:55,457 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 3006 transitions. [2025-02-06 10:15:55,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2025-02-06 10:15:55,458 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:55,458 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:55,465 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 10:15:55,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:55,659 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:55,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:55,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1030358806, now seen corresponding path program 1 times [2025-02-06 10:15:55,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:55,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478171611] [2025-02-06 10:15:55,660 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:55,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:55,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-06 10:15:55,673 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-06 10:15:55,673 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:55,673 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 190 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:15:55,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:55,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478171611] [2025-02-06 10:15:55,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478171611] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:55,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357301447] [2025-02-06 10:15:55,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:55,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:55,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:55,836 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 10:15:55,837 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 10:15:55,916 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 114 statements into 1 equivalence classes. [2025-02-06 10:15:55,949 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 114 of 114 statements. [2025-02-06 10:15:55,949 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:55,949 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:55,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:15:55,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:56,047 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 190 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:15:56,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:56,155 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 48 proven. 190 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:15:56,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357301447] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:56,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:56,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-02-06 10:15:56,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657878248] [2025-02-06 10:15:56,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:56,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:15:56,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:56,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:15:56,156 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:15:56,156 INFO L87 Difference]: Start difference. First operand 2538 states and 3006 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 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 10:15:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:15:56,307 INFO L93 Difference]: Finished difference Result 4957 states and 5840 transitions. [2025-02-06 10:15:56,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:15:56,308 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 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 114 [2025-02-06 10:15:56,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:15:56,311 INFO L225 Difference]: With dead ends: 4957 [2025-02-06 10:15:56,311 INFO L226 Difference]: Without dead ends: 4957 [2025-02-06 10:15:56,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:15:56,311 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 507 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:15:56,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 276 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:15:56,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2025-02-06 10:15:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 2539. [2025-02-06 10:15:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2539 states, 2530 states have (on average 1.1885375494071146) internal successors, (3007), 2538 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states 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 10:15:56,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2539 states to 2539 states and 3007 transitions. [2025-02-06 10:15:56,326 INFO L78 Accepts]: Start accepts. Automaton has 2539 states and 3007 transitions. Word has length 114 [2025-02-06 10:15:56,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:15:56,327 INFO L471 AbstractCegarLoop]: Abstraction has 2539 states and 3007 transitions. [2025-02-06 10:15:56,327 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 6 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 10:15:56,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2539 states and 3007 transitions. [2025-02-06 10:15:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-02-06 10:15:56,328 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:15:56,328 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 8, 7, 6, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:15:56,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2025-02-06 10:15:56,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2025-02-06 10:15:56,529 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:15:56,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:15:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1979067295, now seen corresponding path program 1 times [2025-02-06 10:15:56,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:15:56,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129743107] [2025-02-06 10:15:56,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:56,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:15:56,538 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-06 10:15:56,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-06 10:15:56,557 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:56,557 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:57,013 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 84 proven. 313 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-02-06 10:15:57,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:15:57,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129743107] [2025-02-06 10:15:57,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129743107] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:15:57,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498339941] [2025-02-06 10:15:57,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:15:57,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:15:57,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:15:57,016 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 10:15:57,020 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 10:15:57,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-06 10:15:57,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-06 10:15:57,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:15:57,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:15:57,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 41 conjuncts are in the unsatisfiable core [2025-02-06 10:15:57,141 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:15:57,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 10:15:57,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 10:15:57,552 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 70 proven. 291 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-02-06 10:15:57,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:15:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 70 proven. 291 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2025-02-06 10:15:57,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498339941] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:15:57,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:15:57,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 17 [2025-02-06 10:15:57,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722566330] [2025-02-06 10:15:57,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:15:57,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 10:15:57,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:15:57,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 10:15:57,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:15:57,859 INFO L87 Difference]: Start difference. First operand 2539 states and 3007 transitions. Second operand has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 17 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:16:00,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:16:00,196 INFO L93 Difference]: Finished difference Result 14525 states and 16799 transitions. [2025-02-06 10:16:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2025-02-06 10:16:00,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 17 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2025-02-06 10:16:00,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:16:00,206 INFO L225 Difference]: With dead ends: 14525 [2025-02-06 10:16:00,206 INFO L226 Difference]: Without dead ends: 14525 [2025-02-06 10:16:00,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4027 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1558, Invalid=9572, Unknown=0, NotChecked=0, Total=11130 [2025-02-06 10:16:00,209 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 2506 mSDsluCounter, 2725 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2506 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 1161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:16:00,209 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2506 Valid, 2885 Invalid, 1161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 10:16:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14525 states. [2025-02-06 10:16:00,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14525 to 3805. [2025-02-06 10:16:00,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3805 states, 3796 states have (on average 1.1859852476290833) internal successors, (4502), 3804 states have internal predecessors, (4502), 0 states have call successors, (0), 0 states 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 10:16:00,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3805 states to 3805 states and 4502 transitions. [2025-02-06 10:16:00,254 INFO L78 Accepts]: Start accepts. Automaton has 3805 states and 4502 transitions. Word has length 117 [2025-02-06 10:16:00,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:16:00,254 INFO L471 AbstractCegarLoop]: Abstraction has 3805 states and 4502 transitions. [2025-02-06 10:16:00,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.444444444444445) internal successors, (170), 17 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:16:00,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3805 states and 4502 transitions. [2025-02-06 10:16:00,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-02-06 10:16:00,256 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:16:00,256 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:16:00,265 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 10:16:00,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:16:00,461 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:16:00,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:16:00,463 INFO L85 PathProgramCache]: Analyzing trace with hash -712100819, now seen corresponding path program 1 times [2025-02-06 10:16:00,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:16:00,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544585748] [2025-02-06 10:16:00,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:16:00,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:16:00,473 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-06 10:16:00,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-06 10:16:00,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:16:00,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:16:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:16:00,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:16:00,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544585748] [2025-02-06 10:16:00,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544585748] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:16:00,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394762767] [2025-02-06 10:16:00,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:16:00,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:16:00,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:16:00,640 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 10:16:00,645 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 10:16:00,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-06 10:16:00,762 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-06 10:16:00,762 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:16:00,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:16:00,764 INFO L256 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:16:00,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:16:00,918 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 13 treesize of output 9 [2025-02-06 10:16:00,940 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:16:00,940 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:16:01,046 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_~x1~0.base_34 Int)) (or (= (store |c_#valid| v_~x1~0.base_34 0) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (select |c_#valid| v_~x1~0.base_34) 0)))) is different from false [2025-02-06 10:16:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 0 proven. 191 refuted. 0 times theorem prover too weak. 95 trivial. 48 not checked. [2025-02-06 10:16:01,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394762767] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:16:01,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:16:01,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 8 [2025-02-06 10:16:01,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387690995] [2025-02-06 10:16:01,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:16:01,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:16:01,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:16:01,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:16:01,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2025-02-06 10:16:01,060 INFO L87 Difference]: Start difference. First operand 3805 states and 4502 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 10:16:01,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:16:01,358 INFO L93 Difference]: Finished difference Result 9178 states and 10799 transitions. [2025-02-06 10:16:01,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 10:16:01,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 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 117 [2025-02-06 10:16:01,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:16:01,368 INFO L225 Difference]: With dead ends: 9178 [2025-02-06 10:16:01,368 INFO L226 Difference]: Without dead ends: 9176 [2025-02-06 10:16:01,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=201, Unknown=1, NotChecked=30, Total=306 [2025-02-06 10:16:01,369 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 372 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 409 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:16:01,369 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 780 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 329 Invalid, 0 Unknown, 409 Unchecked, 0.2s Time] [2025-02-06 10:16:01,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9176 states. [2025-02-06 10:16:01,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9176 to 6498. [2025-02-06 10:16:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6498 states, 6489 states have (on average 1.1840036985668054) internal successors, (7683), 6497 states have internal predecessors, (7683), 0 states have call successors, (0), 0 states 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 10:16:01,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6498 states to 6498 states and 7683 transitions. [2025-02-06 10:16:01,454 INFO L78 Accepts]: Start accepts. Automaton has 6498 states and 7683 transitions. Word has length 117 [2025-02-06 10:16:01,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:16:01,455 INFO L471 AbstractCegarLoop]: Abstraction has 6498 states and 7683 transitions. [2025-02-06 10:16:01,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 9 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 10:16:01,455 INFO L276 IsEmpty]: Start isEmpty. Operand 6498 states and 7683 transitions. [2025-02-06 10:16:01,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-02-06 10:16:01,457 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:16:01,457 INFO L218 NwaCegarLoop]: trace histogram [12, 11, 10, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:16:01,467 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 10:16:01,658 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,SelfDestructingSolverStorable32 [2025-02-06 10:16:01,658 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:16:01,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:16:01,658 INFO L85 PathProgramCache]: Analyzing trace with hash -712100467, now seen corresponding path program 1 times [2025-02-06 10:16:01,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:16:01,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689252186] [2025-02-06 10:16:01,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:16:01,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:16:01,670 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-06 10:16:01,683 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-06 10:16:01,683 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:16:01,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:16:02,219 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 41 proven. 199 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2025-02-06 10:16:02,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:16:02,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689252186] [2025-02-06 10:16:02,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689252186] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:16:02,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018533343] [2025-02-06 10:16:02,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:16:02,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:16:02,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:16:02,225 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 10:16:02,229 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 10:16:02,327 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 117 statements into 1 equivalence classes. [2025-02-06 10:16:02,365 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 117 of 117 statements. [2025-02-06 10:16:02,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:16:02,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:16:02,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 29 conjuncts are in the unsatisfiable core [2025-02-06 10:16:02,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:16:02,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 10:16:02,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 10:16:02,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:16:02,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2025-02-06 10:16:02,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:16:02,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2025-02-06 10:16:02,782 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 1 proven. 95 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2025-02-06 10:16:02,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:16:02,914 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 12 treesize of output 10 [2025-02-06 10:16:02,918 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 10:16:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 1 proven. 95 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2025-02-06 10:16:03,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018533343] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:16:03,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:16:03,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2025-02-06 10:16:03,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384136098] [2025-02-06 10:16:03,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:16:03,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-06 10:16:03,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:16:03,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-06 10:16:03,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2025-02-06 10:16:03,131 INFO L87 Difference]: Start difference. First operand 6498 states and 7683 transitions. Second operand has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 10:16:03,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:16:03,615 INFO L93 Difference]: Finished difference Result 13110 states and 15381 transitions. [2025-02-06 10:16:03,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:16:03,615 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 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 117 [2025-02-06 10:16:03,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:16:03,629 INFO L225 Difference]: With dead ends: 13110 [2025-02-06 10:16:03,629 INFO L226 Difference]: Without dead ends: 13096 [2025-02-06 10:16:03,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=823, Unknown=0, NotChecked=0, Total=992 [2025-02-06 10:16:03,630 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 287 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:16:03,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1000 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:16:03,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13096 states. [2025-02-06 10:16:03,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13096 to 8418. [2025-02-06 10:16:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8418 states, 8409 states have (on average 1.1883696039957188) internal successors, (9993), 8417 states have internal predecessors, (9993), 0 states have call successors, (0), 0 states 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 10:16:03,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8418 states to 8418 states and 9993 transitions. [2025-02-06 10:16:03,687 INFO L78 Accepts]: Start accepts. Automaton has 8418 states and 9993 transitions. Word has length 117 [2025-02-06 10:16:03,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:16:03,688 INFO L471 AbstractCegarLoop]: Abstraction has 8418 states and 9993 transitions. [2025-02-06 10:16:03,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.095238095238095) internal successors, (149), 20 states have internal predecessors, (149), 0 states have call successors, (0), 0 states 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 10:16:03,688 INFO L276 IsEmpty]: Start isEmpty. Operand 8418 states and 9993 transitions. [2025-02-06 10:16:03,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2025-02-06 10:16:03,691 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:16:03,691 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 8, 8, 8, 7, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:16:03,697 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 10:16:03,894 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,SelfDestructingSolverStorable33 [2025-02-06 10:16:03,895 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:16:03,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:16:03,895 INFO L85 PathProgramCache]: Analyzing trace with hash 633829381, now seen corresponding path program 1 times [2025-02-06 10:16:03,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:16:03,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255617554] [2025-02-06 10:16:03,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:16:03,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:16:03,905 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-02-06 10:16:03,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-02-06 10:16:03,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:16:03,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:16:04,023 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 419 proven. 4 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-02-06 10:16:04,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:16:04,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255617554] [2025-02-06 10:16:04,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255617554] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:16:04,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395409216] [2025-02-06 10:16:04,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:16:04,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:16:04,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:16:04,025 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 10:16:04,030 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 10:16:04,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 146 statements into 1 equivalence classes. [2025-02-06 10:16:04,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 146 of 146 statements. [2025-02-06 10:16:04,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:16:04,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:16:04,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 10:16:04,167 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:16:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 419 proven. 4 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-02-06 10:16:04,196 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:16:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 654 backedges. 423 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2025-02-06 10:16:04,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395409216] provided 1 perfect and 1 imperfect interpolant sequences [2025-02-06 10:16:04,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:16:04,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 9 [2025-02-06 10:16:04,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719077126] [2025-02-06 10:16:04,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:16:04,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:16:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:16:04,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:16:04,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:16:04,240 INFO L87 Difference]: Start difference. First operand 8418 states and 9993 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 10:16:04,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:16:04,291 INFO L93 Difference]: Finished difference Result 5403 states and 6319 transitions. [2025-02-06 10:16:04,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:16:04,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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) Word has length 146 [2025-02-06 10:16:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:16:04,296 INFO L225 Difference]: With dead ends: 5403 [2025-02-06 10:16:04,296 INFO L226 Difference]: Without dead ends: 5403 [2025-02-06 10:16:04,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:16:04,297 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 38 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:16:04,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 285 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:16:04,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5403 states. [2025-02-06 10:16:04,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5403 to 5198. [2025-02-06 10:16:04,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5198 states, 5189 states have (on average 1.173636538832145) internal successors, (6090), 5197 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states 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 10:16:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5198 states to 5198 states and 6090 transitions. [2025-02-06 10:16:04,322 INFO L78 Accepts]: Start accepts. Automaton has 5198 states and 6090 transitions. Word has length 146 [2025-02-06 10:16:04,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:16:04,323 INFO L471 AbstractCegarLoop]: Abstraction has 5198 states and 6090 transitions. [2025-02-06 10:16:04,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 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 10:16:04,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5198 states and 6090 transitions. [2025-02-06 10:16:04,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-02-06 10:16:04,325 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:16:04,325 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 12, 11, 9, 6, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:16:04,332 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 10:16:04,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,27 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:16:04,526 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:16:04,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:16:04,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1041455511, now seen corresponding path program 2 times [2025-02-06 10:16:04,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:16:04,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844475057] [2025-02-06 10:16:04,526 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:16:04,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:16:04,537 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 155 statements into 2 equivalence classes. [2025-02-06 10:16:04,543 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 155 of 155 statements. [2025-02-06 10:16:04,543 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:16:04,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:16:04,657 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 418 proven. 3 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2025-02-06 10:16:04,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:16:04,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844475057] [2025-02-06 10:16:04,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844475057] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:16:04,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235391437] [2025-02-06 10:16:04,658 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:16:04,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:16:04,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:16:04,660 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 10:16:04,665 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 10:16:04,764 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 155 statements into 2 equivalence classes. [2025-02-06 10:16:04,808 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 155 of 155 statements. [2025-02-06 10:16:04,808 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:16:04,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:16:04,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:16:04,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:16:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 377 proven. 97 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2025-02-06 10:16:04,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:16:04,963 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 377 proven. 97 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2025-02-06 10:16:04,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235391437] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:16:04,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:16:04,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-02-06 10:16:04,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51227961] [2025-02-06 10:16:04,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:16:04,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:16:04,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:16:04,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:16:04,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:16:04,965 INFO L87 Difference]: Start difference. First operand 5198 states and 6090 transitions. Second operand has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:16:05,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:16:05,109 INFO L93 Difference]: Finished difference Result 4397 states and 4973 transitions. [2025-02-06 10:16:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-02-06 10:16:05,110 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2025-02-06 10:16:05,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:16:05,114 INFO L225 Difference]: With dead ends: 4397 [2025-02-06 10:16:05,114 INFO L226 Difference]: Without dead ends: 4397 [2025-02-06 10:16:05,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=468, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:16:05,115 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 116 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:16:05,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1035 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:16:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4397 states. [2025-02-06 10:16:05,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4397 to 4129. [2025-02-06 10:16:05,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4129 states, 4120 states have (on average 1.1381067961165048) internal successors, (4689), 4128 states have internal predecessors, (4689), 0 states have call successors, (0), 0 states 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 10:16:05,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4129 states to 4129 states and 4689 transitions. [2025-02-06 10:16:05,136 INFO L78 Accepts]: Start accepts. Automaton has 4129 states and 4689 transitions. Word has length 155 [2025-02-06 10:16:05,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:16:05,136 INFO L471 AbstractCegarLoop]: Abstraction has 4129 states and 4689 transitions. [2025-02-06 10:16:05,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 13 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:16:05,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4129 states and 4689 transitions. [2025-02-06 10:16:05,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-02-06 10:16:05,138 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:16:05,138 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 17, 10, 10, 8, 8, 7, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:16:05,145 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 10:16:05,339 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,SelfDestructingSolverStorable35 [2025-02-06 10:16:05,340 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 17 more)] === [2025-02-06 10:16:05,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:16:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash -790989312, now seen corresponding path program 1 times [2025-02-06 10:16:05,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:16:05,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67405887] [2025-02-06 10:16:05,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:16:05,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:16:05,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-06 10:16:05,376 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-06 10:16:05,376 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:16:05,376 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:16:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 104 proven. 678 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2025-02-06 10:16:06,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:16:06,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67405887] [2025-02-06 10:16:06,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67405887] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:16:06,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642115213] [2025-02-06 10:16:06,147 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:16:06,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:16:06,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:16:06,150 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 10:16:06,153 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 10:16:06,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 162 statements into 1 equivalence classes. [2025-02-06 10:16:06,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 162 of 162 statements. [2025-02-06 10:16:06,389 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:16:06,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:16:06,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-02-06 10:16:06,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:16:06,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 10:16:06,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-02-06 10:16:06,736 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:16:06,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-06 10:16:06,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:16:06,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:16:06,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:16:06,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:16:06,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:16:06,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:16:06,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:16:06,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:16:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 100 proven. 672 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-06 10:16:07,073 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:16:07,878 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:16:07,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2025-02-06 10:16:07,882 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 36 treesize of output 24 [2025-02-06 10:16:07,885 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 11 treesize of output 7 [2025-02-06 10:16:07,894 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:16:07,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2025-02-06 10:16:07,896 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 10:16:07,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2025-02-06 10:16:08,144 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:16:08,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 46 [2025-02-06 10:16:08,166 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 90 proven. 666 refuted. 16 times theorem prover too weak. 57 trivial. 0 not checked. [2025-02-06 10:16:08,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642115213] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:16:08,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:16:08,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 23 [2025-02-06 10:16:08,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691643165] [2025-02-06 10:16:08,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:16:08,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 10:16:08,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:16:08,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 10:16:08,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=478, Unknown=12, NotChecked=0, Total=552 [2025-02-06 10:16:08,169 INFO L87 Difference]: Start difference. First operand 4129 states and 4689 transitions. Second operand has 24 states, 24 states have (on average 9.791666666666666) internal successors, (235), 23 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 10:16:11,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:16,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:21,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:22,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:24,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:25,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:26,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:28,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:29,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:30,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:33,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:34,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:36,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:37,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:38,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:40,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:41,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:42,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:44,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:45,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:50,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:52,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:53,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:55,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:56,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:57,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:16:59,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:17:00,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:17:03,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:17:04,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:17:05,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:17:08,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2025-02-06 10:17:10,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1]