./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 13ad8bc9cfa3954c0bae4db0509cb11733a45600a9e4ff56ca5bdd4aceeb1fc0 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:21:16,000 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:21:16,034 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 10:21:16,037 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:21:16,037 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:21:16,051 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:21:16,051 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:21:16,051 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:21:16,051 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:21:16,051 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:21:16,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:21:16,052 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:21:16,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:21:16,052 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:21:16,053 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:21:16,053 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:21:16,053 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:21:16,053 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 -> 13ad8bc9cfa3954c0bae4db0509cb11733a45600a9e4ff56ca5bdd4aceeb1fc0 [2025-02-06 10:21:16,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:21:16,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:21:16,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:21:16,355 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:21:16,355 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:21:16,358 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2025-02-06 10:21:17,563 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f89ba42d3/665f68d7297041e89dd84cf3de0681cf/FLAG79d2b90cf [2025-02-06 10:21:17,788 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:21:17,789 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/ArraysOfVariableLength2.c [2025-02-06 10:21:17,795 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f89ba42d3/665f68d7297041e89dd84cf3de0681cf/FLAG79d2b90cf [2025-02-06 10:21:17,810 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/f89ba42d3/665f68d7297041e89dd84cf3de0681cf [2025-02-06 10:21:17,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:21:17,827 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:21:17,829 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:21:17,830 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:21:17,833 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:21:17,837 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:17,838 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bb72c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17, skipping insertion in model container [2025-02-06 10:21:17,838 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:17,849 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:21:17,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:21:17,953 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:21:17,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:21:17,977 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:21:17,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17 WrapperNode [2025-02-06 10:21:17,978 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:21:17,978 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:21:17,978 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:21:17,979 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:21:17,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:17,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:18,000 INFO L138 Inliner]: procedures = 9, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2025-02-06 10:21:18,000 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:21:18,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:21:18,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:21:18,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:21:18,006 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:18,006 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:18,011 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:18,019 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0]. The 2 writes are split as follows [1, 1]. [2025-02-06 10:21:18,019 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:18,019 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:18,024 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:18,027 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:18,027 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:18,028 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:18,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:21:18,033 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:21:18,033 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:21:18,033 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:21:18,034 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (1/1) ... [2025-02-06 10:21:18,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:21:18,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:18,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 10:21:18,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 10:21:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 10:21:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-06 10:21:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:21:18,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:21:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-06 10:21:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-06 10:21:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-06 10:21:18,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:21:18,127 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:21:18,128 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:21:18,302 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L21: call ULTIMATE.dealloc(foo_~#a~0#1.base, foo_~#a~0#1.offset);havoc foo_~#a~0#1.base, foo_~#a~0#1.offset; [2025-02-06 10:21:18,303 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L32: call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset; [2025-02-06 10:21:18,322 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2025-02-06 10:21:18,322 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:21:18,332 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:21:18,332 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:21:18,333 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:21:18 BoogieIcfgContainer [2025-02-06 10:21:18,333 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:21:18,336 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:21:18,336 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:21:18,340 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:21:18,341 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:21:17" (1/3) ... [2025-02-06 10:21:18,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798de4d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:21:18, skipping insertion in model container [2025-02-06 10:21:18,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:21:17" (2/3) ... [2025-02-06 10:21:18,342 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798de4d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:21:18, skipping insertion in model container [2025-02-06 10:21:18,342 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:21:18" (3/3) ... [2025-02-06 10:21:18,345 INFO L128 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2.c [2025-02-06 10:21:18,359 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:21:18,360 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ArraysOfVariableLength2.c that has 1 procedures, 33 locations, 1 initial locations, 4 loop locations, and 11 error locations. [2025-02-06 10:21:18,397 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:21:18,406 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;@614fd022, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:21:18,406 INFO L334 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2025-02-06 10:21:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 10:21:18,412 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:18,413 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 10:21:18,413 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:18,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:18,417 INFO L85 PathProgramCache]: Analyzing trace with hash 71541065, now seen corresponding path program 1 times [2025-02-06 10:21:18,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:18,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442460575] [2025-02-06 10:21:18,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:18,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:18,471 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 10:21:18,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 10:21:18,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:18,486 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:18,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:18,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:18,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442460575] [2025-02-06 10:21:18,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442460575] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:18,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:18,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:21:18,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604401478] [2025-02-06 10:21:18,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:18,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:18,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:18,696 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:18,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:18,699 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.8095238095238095) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:18,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:18,788 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2025-02-06 10:21:18,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:18,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-06 10:21:18,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:18,795 INFO L225 Difference]: With dead ends: 46 [2025-02-06 10:21:18,795 INFO L226 Difference]: Without dead ends: 44 [2025-02-06 10:21:18,797 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:18,800 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 26 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:18,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 67 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-06 10:21:18,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2025-02-06 10:21:18,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2025-02-06 10:21:18,829 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 5 [2025-02-06 10:21:18,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:18,829 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2025-02-06 10:21:18,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:18,830 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2025-02-06 10:21:18,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-06 10:21:18,830 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:18,830 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-06 10:21:18,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:21:18,830 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:18,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:18,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2077202154, now seen corresponding path program 1 times [2025-02-06 10:21:18,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:18,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16542592] [2025-02-06 10:21:18,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:18,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:18,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-06 10:21:18,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-06 10:21:18,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:18,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:18,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:18,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:18,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16542592] [2025-02-06 10:21:18,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16542592] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:18,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:18,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:21:18,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403167002] [2025-02-06 10:21:18,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:18,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:21:18,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:18,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:21:18,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:18,988 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:19,078 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2025-02-06 10:21:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:21:19,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2025-02-06 10:21:19,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:19,079 INFO L225 Difference]: With dead ends: 41 [2025-02-06 10:21:19,079 INFO L226 Difference]: Without dead ends: 41 [2025-02-06 10:21:19,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:21:19,080 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 17 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:19,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 88 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:19,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-06 10:21:19,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2025-02-06 10:21:19,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2025-02-06 10:21:19,086 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 6 [2025-02-06 10:21:19,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:19,086 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2025-02-06 10:21:19,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2025-02-06 10:21:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 10:21:19,087 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:19,087 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:19,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:21:19,087 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:19,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:19,089 INFO L85 PathProgramCache]: Analyzing trace with hash -45342720, now seen corresponding path program 1 times [2025-02-06 10:21:19,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:19,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983021491] [2025-02-06 10:21:19,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:19,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:19,100 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 10:21:19,111 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 10:21:19,114 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:19,114 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:19,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:19,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983021491] [2025-02-06 10:21:19,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983021491] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:19,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:19,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:21:19,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340579442] [2025-02-06 10:21:19,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:19,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:21:19,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:19,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:21:19,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:19,176 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:19,204 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2025-02-06 10:21:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:21:19,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-06 10:21:19,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:19,206 INFO L225 Difference]: With dead ends: 41 [2025-02-06 10:21:19,207 INFO L226 Difference]: Without dead ends: 41 [2025-02-06 10:21:19,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:19,207 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:19,208 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 119 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2025-02-06 10:21:19,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2025-02-06 10:21:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 36 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2025-02-06 10:21:19,212 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 9 [2025-02-06 10:21:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:19,212 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2025-02-06 10:21:19,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2025-02-06 10:21:19,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 10:21:19,214 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:19,214 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:19,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 10:21:19,214 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:19,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash -45340798, now seen corresponding path program 1 times [2025-02-06 10:21:19,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:19,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341818950] [2025-02-06 10:21:19,215 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:19,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:19,220 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 10:21:19,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 10:21:19,225 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:19,225 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:19,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:19,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341818950] [2025-02-06 10:21:19,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341818950] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:19,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:19,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:19,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766961217] [2025-02-06 10:21:19,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:19,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:19,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:19,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:19,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:19,293 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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 10:21:19,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:19,346 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2025-02-06 10:21:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:19,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) 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 10:21:19,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:19,347 INFO L225 Difference]: With dead ends: 35 [2025-02-06 10:21:19,350 INFO L226 Difference]: Without dead ends: 35 [2025-02-06 10:21:19,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:19,351 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:19,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 22 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:19,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2025-02-06 10:21:19,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2025-02-06 10:21:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2025-02-06 10:21:19,354 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 9 [2025-02-06 10:21:19,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:19,354 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2025-02-06 10:21:19,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) 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 10:21:19,354 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2025-02-06 10:21:19,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-06 10:21:19,354 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:19,354 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:19,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 10:21:19,354 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:19,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash -45340797, now seen corresponding path program 1 times [2025-02-06 10:21:19,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:19,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197221064] [2025-02-06 10:21:19,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:19,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:19,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 10:21:19,378 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 10:21:19,378 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:19,378 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:19,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:19,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197221064] [2025-02-06 10:21:19,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197221064] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:19,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:19,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:21:19,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639246296] [2025-02-06 10:21:19,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:19,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:21:19,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:19,549 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:21:19,549 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:19,549 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:19,614 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2025-02-06 10:21:19,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:19,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-06 10:21:19,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:19,615 INFO L225 Difference]: With dead ends: 40 [2025-02-06 10:21:19,615 INFO L226 Difference]: Without dead ends: 40 [2025-02-06 10:21:19,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:21:19,616 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:19,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 53 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:19,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-02-06 10:21:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2025-02-06 10:21:19,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 38 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2025-02-06 10:21:19,621 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 9 [2025-02-06 10:21:19,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:19,621 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2025-02-06 10:21:19,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,622 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2025-02-06 10:21:19,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 10:21:19,622 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:19,623 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:19,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 10:21:19,623 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:19,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:19,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1543404836, now seen corresponding path program 1 times [2025-02-06 10:21:19,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:19,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446381363] [2025-02-06 10:21:19,623 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:19,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:19,632 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 10:21:19,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 10:21:19,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:19,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:19,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:19,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446381363] [2025-02-06 10:21:19,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446381363] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:19,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:19,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:19,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065346440] [2025-02-06 10:21:19,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:19,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:19,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:19,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:19,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:19,712 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:19,745 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2025-02-06 10:21:19,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:19,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2025-02-06 10:21:19,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:19,746 INFO L225 Difference]: With dead ends: 38 [2025-02-06 10:21:19,746 INFO L226 Difference]: Without dead ends: 38 [2025-02-06 10:21:19,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:19,748 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 33 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:19,748 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 27 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:19,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-02-06 10:21:19,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-02-06 10:21:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 37 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2025-02-06 10:21:19,752 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 13 [2025-02-06 10:21:19,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:19,752 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2025-02-06 10:21:19,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:19,752 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2025-02-06 10:21:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-06 10:21:19,752 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:19,752 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:19,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 10:21:19,752 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:19,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:19,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1543404835, now seen corresponding path program 1 times [2025-02-06 10:21:19,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:19,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058388043] [2025-02-06 10:21:19,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:19,762 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 10:21:19,772 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 10:21:19,773 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:19,773 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:19,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:19,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:19,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058388043] [2025-02-06 10:21:19,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058388043] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:19,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535877745] [2025-02-06 10:21:19,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:19,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:19,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:19,945 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:19,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-06 10:21:19,984 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 10:21:20,001 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 10:21:20,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:20,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:20,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 10:21:20,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:20,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:21:20,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:21:20,128 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:21:20,128 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 10:21:20,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:20,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:20,289 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 52 treesize of output 48 [2025-02-06 10:21:20,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:21:20,306 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 46 treesize of output 64 [2025-02-06 10:21:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:20,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535877745] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:20,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:20,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2025-02-06 10:21:20,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121045596] [2025-02-06 10:21:20,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:20,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:21:20,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:20,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:21:20,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:21:20,411 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:20,753 INFO L93 Difference]: Finished difference Result 93 states and 114 transitions. [2025-02-06 10:21:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 10:21:20,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-06 10:21:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:20,755 INFO L225 Difference]: With dead ends: 93 [2025-02-06 10:21:20,755 INFO L226 Difference]: Without dead ends: 93 [2025-02-06 10:21:20,756 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2025-02-06 10:21:20,756 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 259 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:20,757 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 49 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2025-02-06 10:21:20,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 45. [2025-02-06 10:21:20,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 44 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:20,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2025-02-06 10:21:20,763 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 13 [2025-02-06 10:21:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:20,763 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2025-02-06 10:21:20,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 11 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:20,764 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2025-02-06 10:21:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:21:20,764 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:20,764 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:20,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-06 10:21:20,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:20,965 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:20,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:20,966 INFO L85 PathProgramCache]: Analyzing trace with hash -600917533, now seen corresponding path program 1 times [2025-02-06 10:21:20,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:20,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147867730] [2025-02-06 10:21:20,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:20,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:20,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:21:20,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:21:20,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:20,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:21,061 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 10:21:21,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:21,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147867730] [2025-02-06 10:21:21,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147867730] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:21,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261243790] [2025-02-06 10:21:21,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:21,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:21,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:21,066 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:21,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-06 10:21:21,102 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:21:21,115 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:21:21,115 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:21,115 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:21,116 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-06 10:21:21,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:21,146 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 10:21:21,146 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:21,182 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 10:21:21,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261243790] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:21,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:21,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2025-02-06 10:21:21,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429985993] [2025-02-06 10:21:21,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:21,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:21:21,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:21,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:21:21,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:21:21,183 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:21,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:21,252 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2025-02-06 10:21:21,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:21:21,252 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-06 10:21:21,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:21,252 INFO L225 Difference]: With dead ends: 48 [2025-02-06 10:21:21,252 INFO L226 Difference]: Without dead ends: 48 [2025-02-06 10:21:21,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:21:21,253 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 62 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:21,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 68 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:21,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-02-06 10:21:21,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2025-02-06 10:21:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 44 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2025-02-06 10:21:21,259 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 14 [2025-02-06 10:21:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:21,259 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2025-02-06 10:21:21,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2025-02-06 10:21:21,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:21:21,259 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:21,259 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:21,265 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 10:21:21,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:21,460 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:21,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:21,460 INFO L85 PathProgramCache]: Analyzing trace with hash -600909654, now seen corresponding path program 1 times [2025-02-06 10:21:21,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:21,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897041912] [2025-02-06 10:21:21,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:21,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:21,467 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:21:21,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:21:21,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:21,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:21,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:21,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:21,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897041912] [2025-02-06 10:21:21,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897041912] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:21,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:21,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:21:21,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940536261] [2025-02-06 10:21:21,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:21,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:21:21,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:21,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:21:21,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:21,491 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:21,507 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2025-02-06 10:21:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:21:21,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-06 10:21:21,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:21,507 INFO L225 Difference]: With dead ends: 44 [2025-02-06 10:21:21,507 INFO L226 Difference]: Without dead ends: 44 [2025-02-06 10:21:21,508 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:21:21,508 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:21,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 30 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:21,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-06 10:21:21,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-02-06 10:21:21,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 37 states have (on average 1.3783783783783783) internal successors, (51), 43 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:21,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2025-02-06 10:21:21,510 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 14 [2025-02-06 10:21:21,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:21,510 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2025-02-06 10:21:21,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:21,510 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2025-02-06 10:21:21,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-06 10:21:21,510 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:21,510 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:21,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 10:21:21,510 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:21,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:21,510 INFO L85 PathProgramCache]: Analyzing trace with hash -600909653, now seen corresponding path program 1 times [2025-02-06 10:21:21,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:21,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863024214] [2025-02-06 10:21:21,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:21,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:21,517 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:21:21,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:21:21,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:21,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:21,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:21,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863024214] [2025-02-06 10:21:21,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863024214] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:21,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050576505] [2025-02-06 10:21:21,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:21,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:21,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:21,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:21,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-06 10:21:21,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 10:21:21,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 10:21:21,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:21,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:21,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-02-06 10:21:21,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:21,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-06 10:21:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:21,740 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:21,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050576505] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:21,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:21,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-06 10:21:21,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103104972] [2025-02-06 10:21:21,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:21,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:21:21,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:21,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:21:21,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:21:21,791 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:21,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:21,931 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2025-02-06 10:21:21,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-06 10:21:21,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-06 10:21:21,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:21,932 INFO L225 Difference]: With dead ends: 112 [2025-02-06 10:21:21,932 INFO L226 Difference]: Without dead ends: 112 [2025-02-06 10:21:21,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2025-02-06 10:21:21,933 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 97 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:21,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 101 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2025-02-06 10:21:21,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 82. [2025-02-06 10:21:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 81 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:21,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions. [2025-02-06 10:21:21,936 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 14 [2025-02-06 10:21:21,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:21,936 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions. [2025-02-06 10:21:21,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:21,937 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions. [2025-02-06 10:21:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-06 10:21:21,937 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:21,937 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:21,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:22,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:22,137 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:22,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:22,138 INFO L85 PathProgramCache]: Analyzing trace with hash -275807399, now seen corresponding path program 1 times [2025-02-06 10:21:22,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:22,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863193028] [2025-02-06 10:21:22,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:22,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:22,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:21:22,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:21:22,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:22,173 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:22,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:22,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:22,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863193028] [2025-02-06 10:21:22,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863193028] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:22,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550253757] [2025-02-06 10:21:22,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:22,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:22,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:22,224 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:22,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-06 10:21:22,261 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-06 10:21:22,274 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-06 10:21:22,274 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:22,274 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:22,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-02-06 10:21:22,276 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:22,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:22,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:21:22,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550253757] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:22,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:22,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2025-02-06 10:21:22,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231123716] [2025-02-06 10:21:22,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:22,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 10:21:22,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:22,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 10:21:22,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:21:22,345 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:22,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:22,414 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2025-02-06 10:21:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:21:22,415 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2025-02-06 10:21:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:22,415 INFO L225 Difference]: With dead ends: 82 [2025-02-06 10:21:22,415 INFO L226 Difference]: Without dead ends: 82 [2025-02-06 10:21:22,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:21:22,416 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 73 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:22,416 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 77 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:22,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-02-06 10:21:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2025-02-06 10:21:22,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 79 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:22,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2025-02-06 10:21:22,419 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 17 [2025-02-06 10:21:22,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:22,419 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2025-02-06 10:21:22,419 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.7) internal successors, (37), 10 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2025-02-06 10:21:22,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:21:22,419 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:22,419 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:22,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:22,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-06 10:21:22,624 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:22,624 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:22,624 INFO L85 PathProgramCache]: Analyzing trace with hash 39897319, now seen corresponding path program 1 times [2025-02-06 10:21:22,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:22,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130621] [2025-02-06 10:21:22,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:22,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:22,630 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:21:22,635 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:21:22,635 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:22,635 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:22,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130621] [2025-02-06 10:21:22,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130621] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:22,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058491567] [2025-02-06 10:21:22,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:22,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:22,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:22,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:22,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-06 10:21:22,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:21:22,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:21:22,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:22,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:22,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 10:21:22,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:22,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:22,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2025-02-06 10:21:22,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:22,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058491567] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:22,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:22,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2025-02-06 10:21:22,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343462806] [2025-02-06 10:21:22,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:22,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-06 10:21:22,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:22,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-06 10:21:22,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:21:22,888 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:22,967 INFO L93 Difference]: Finished difference Result 89 states and 115 transitions. [2025-02-06 10:21:22,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:21:22,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-02-06 10:21:22,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:22,968 INFO L225 Difference]: With dead ends: 89 [2025-02-06 10:21:22,968 INFO L226 Difference]: Without dead ends: 89 [2025-02-06 10:21:22,968 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:21:22,969 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 8 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:22,969 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 94 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:22,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-02-06 10:21:22,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2025-02-06 10:21:22,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 82 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:22,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 108 transitions. [2025-02-06 10:21:22,972 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 108 transitions. Word has length 18 [2025-02-06 10:21:22,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:22,972 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 108 transitions. [2025-02-06 10:21:22,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:22,972 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 108 transitions. [2025-02-06 10:21:22,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:21:22,972 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:22,972 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:22,980 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 10:21:23,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-06 10:21:23,177 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:23,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:23,178 INFO L85 PathProgramCache]: Analyzing trace with hash 39897318, now seen corresponding path program 1 times [2025-02-06 10:21:23,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:23,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111808942] [2025-02-06 10:21:23,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:23,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:23,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:21:23,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:21:23,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:23,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:23,217 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:23,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111808942] [2025-02-06 10:21:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111808942] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:23,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:23,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 10:21:23,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007748185] [2025-02-06 10:21:23,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:23,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 10:21:23,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:23,219 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 10:21:23,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 10:21:23,219 INFO L87 Difference]: Start difference. First operand 83 states and 108 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:23,243 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2025-02-06 10:21:23,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 10:21:23,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-02-06 10:21:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:23,244 INFO L225 Difference]: With dead ends: 82 [2025-02-06 10:21:23,244 INFO L226 Difference]: Without dead ends: 82 [2025-02-06 10:21:23,245 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:23,245 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 13 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:23,246 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:23,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-02-06 10:21:23,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2025-02-06 10:21:23,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 76 states have (on average 1.3421052631578947) internal successors, (102), 81 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2025-02-06 10:21:23,250 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 18 [2025-02-06 10:21:23,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:23,251 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2025-02-06 10:21:23,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:23,251 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2025-02-06 10:21:23,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:21:23,251 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:23,251 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:23,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 10:21:23,251 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:23,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:23,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1124941321, now seen corresponding path program 1 times [2025-02-06 10:21:23,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:23,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149485633] [2025-02-06 10:21:23,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:23,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:23,259 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:21:23,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:23,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:23,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:23,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:23,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149485633] [2025-02-06 10:21:23,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149485633] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:23,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295606310] [2025-02-06 10:21:23,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:23,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:23,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:23,338 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:23,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-06 10:21:23,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:21:23,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:23,401 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:23,401 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:23,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:21:23,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:23,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:23,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295606310] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:23,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:23,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2025-02-06 10:21:23,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034659928] [2025-02-06 10:21:23,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:23,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-02-06 10:21:23,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:23,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-02-06 10:21:23,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2025-02-06 10:21:23,486 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:23,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:23,560 INFO L93 Difference]: Finished difference Result 82 states and 100 transitions. [2025-02-06 10:21:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:21:23,560 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-06 10:21:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:23,561 INFO L225 Difference]: With dead ends: 82 [2025-02-06 10:21:23,561 INFO L226 Difference]: Without dead ends: 82 [2025-02-06 10:21:23,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:21:23,561 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 35 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:23,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 74 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:23,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2025-02-06 10:21:23,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2025-02-06 10:21:23,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 75 states have (on average 1.32) internal successors, (99), 80 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 10:21:23,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 99 transitions. [2025-02-06 10:21:23,567 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 99 transitions. Word has length 21 [2025-02-06 10:21:23,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:23,567 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 99 transitions. [2025-02-06 10:21:23,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:23,567 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 99 transitions. [2025-02-06 10:21:23,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-06 10:21:23,568 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:23,568 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:23,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:23,768 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,SelfDestructingSolverStorable13 [2025-02-06 10:21:23,768 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:23,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1129682414, now seen corresponding path program 1 times [2025-02-06 10:21:23,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:23,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246281625] [2025-02-06 10:21:23,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:23,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:23,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:21:23,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:23,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:23,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:23,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246281625] [2025-02-06 10:21:23,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246281625] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:23,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195654139] [2025-02-06 10:21:23,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:23,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:23,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:23,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:23,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-06 10:21:23,915 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-06 10:21:23,930 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-06 10:21:23,930 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:23,930 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:23,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 10:21:23,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:23,966 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:24,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195654139] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:24,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:24,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2025-02-06 10:21:24,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634096323] [2025-02-06 10:21:24,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:24,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:21:24,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:24,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:21:24,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:21:24,011 INFO L87 Difference]: Start difference. First operand 81 states and 99 transitions. Second operand has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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 10:21:24,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:24,085 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2025-02-06 10:21:24,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:21:24,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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 21 [2025-02-06 10:21:24,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:24,086 INFO L225 Difference]: With dead ends: 80 [2025-02-06 10:21:24,086 INFO L226 Difference]: Without dead ends: 80 [2025-02-06 10:21:24,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:21:24,087 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:24,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 78 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:24,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-02-06 10:21:24,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 75. [2025-02-06 10:21:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 74 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 90 transitions. [2025-02-06 10:21:24,089 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 90 transitions. Word has length 21 [2025-02-06 10:21:24,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:24,089 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 90 transitions. [2025-02-06 10:21:24,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 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 10:21:24,090 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 90 transitions. [2025-02-06 10:21:24,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-06 10:21:24,090 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:24,090 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:24,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-06 10:21:24,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:24,294 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:24,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:24,295 INFO L85 PathProgramCache]: Analyzing trace with hash 498143104, now seen corresponding path program 1 times [2025-02-06 10:21:24,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:24,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662129241] [2025-02-06 10:21:24,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:24,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:24,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 10:21:24,322 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 10:21:24,322 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:24,322 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:24,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:24,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662129241] [2025-02-06 10:21:24,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662129241] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:24,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513272597] [2025-02-06 10:21:24,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:24,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:24,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:24,513 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:24,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-06 10:21:24,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 10:21:24,576 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 10:21:24,576 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:24,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:24,577 INFO L256 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-06 10:21:24,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:24,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-06 10:21:24,589 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 10:21:24,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:21:24,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:21:24,634 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:21:24,635 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 10:21:24,694 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:21:24,695 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 10:21:24,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:21:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:24,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:24,907 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:21:24,908 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 43 treesize of output 61 [2025-02-06 10:21:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:24,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513272597] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:24,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:24,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 17 [2025-02-06 10:21:24,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939638601] [2025-02-06 10:21:24,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:24,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 10:21:24,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:24,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 10:21:24,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:21:24,999 INFO L87 Difference]: Start difference. First operand 75 states and 90 transitions. Second operand has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:25,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:25,465 INFO L93 Difference]: Finished difference Result 96 states and 109 transitions. [2025-02-06 10:21:25,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:21:25,466 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2025-02-06 10:21:25,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:25,466 INFO L225 Difference]: With dead ends: 96 [2025-02-06 10:21:25,466 INFO L226 Difference]: Without dead ends: 96 [2025-02-06 10:21:25,466 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2025-02-06 10:21:25,467 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 113 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:25,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 113 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:21:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-02-06 10:21:25,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2025-02-06 10:21:25,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 84 states have (on average 1.2976190476190477) internal successors, (109), 89 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:25,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2025-02-06 10:21:25,469 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 24 [2025-02-06 10:21:25,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:25,469 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2025-02-06 10:21:25,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.117647058823529) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:25,469 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2025-02-06 10:21:25,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-06 10:21:25,469 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:25,469 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:25,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-06 10:21:25,674 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,SelfDestructingSolverStorable15 [2025-02-06 10:21:25,674 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:25,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:25,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1215844356, now seen corresponding path program 1 times [2025-02-06 10:21:25,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:25,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579304753] [2025-02-06 10:21:25,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:25,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:25,681 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-06 10:21:25,714 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-06 10:21:25,714 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:25,714 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:25,762 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 10:21:25,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:25,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579304753] [2025-02-06 10:21:25,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579304753] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:21:25,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:21:25,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 10:21:25,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789838571] [2025-02-06 10:21:25,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:21:25,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:21:25,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:25,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:21:25,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:25,763 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:25,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:25,782 INFO L93 Difference]: Finished difference Result 89 states and 108 transitions. [2025-02-06 10:21:25,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:21:25,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2025-02-06 10:21:25,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:25,783 INFO L225 Difference]: With dead ends: 89 [2025-02-06 10:21:25,783 INFO L226 Difference]: Without dead ends: 89 [2025-02-06 10:21:25,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-02-06 10:21:25,784 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:25,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 35 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:25,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2025-02-06 10:21:25,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2025-02-06 10:21:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 82 states have (on average 1.2926829268292683) internal successors, (106), 86 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:25,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2025-02-06 10:21:25,786 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 28 [2025-02-06 10:21:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:25,786 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2025-02-06 10:21:25,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:25,786 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2025-02-06 10:21:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-06 10:21:25,786 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:25,786 INFO L218 NwaCegarLoop]: trace histogram [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 10:21:25,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-02-06 10:21:25,786 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:25,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:25,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1760055096, now seen corresponding path program 1 times [2025-02-06 10:21:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:25,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667818216] [2025-02-06 10:21:25,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:25,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:25,792 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 10:21:25,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 10:21:25,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:25,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:25,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:25,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667818216] [2025-02-06 10:21:25,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667818216] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:25,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814147454] [2025-02-06 10:21:25,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:25,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:25,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:25,831 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:25,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-06 10:21:25,887 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-06 10:21:25,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-06 10:21:25,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:25,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:25,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-06 10:21:25,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:25,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:25,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814147454] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:25,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:25,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-06 10:21:25,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666739650] [2025-02-06 10:21:25,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:25,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:21:25,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:25,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:21:25,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:21:25,970 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:25,997 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2025-02-06 10:21:25,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:21:25,998 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2025-02-06 10:21:25,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:25,998 INFO L225 Difference]: With dead ends: 115 [2025-02-06 10:21:25,998 INFO L226 Difference]: Without dead ends: 115 [2025-02-06 10:21:25,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:21:25,999 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 65 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:25,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 110 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:21:25,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2025-02-06 10:21:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2025-02-06 10:21:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 101 states have (on average 1.2871287128712872) internal successors, (130), 105 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:26,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 130 transitions. [2025-02-06 10:21:26,001 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 130 transitions. Word has length 31 [2025-02-06 10:21:26,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:26,001 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 130 transitions. [2025-02-06 10:21:26,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:26,001 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 130 transitions. [2025-02-06 10:21:26,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-06 10:21:26,001 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:26,001 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:26,007 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 10:21:26,201 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 10:21:26,202 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:26,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:26,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1279320490, now seen corresponding path program 1 times [2025-02-06 10:21:26,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:26,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145780069] [2025-02-06 10:21:26,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:26,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:26,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 10:21:26,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 10:21:26,230 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:26,230 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:21:26,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:26,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145780069] [2025-02-06 10:21:26,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145780069] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:26,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114543717] [2025-02-06 10:21:26,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:26,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:26,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:26,429 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:26,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-06 10:21:26,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-06 10:21:26,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-06 10:21:26,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:26,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:26,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-06 10:21:26,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:26,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:21:26,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:21:26,635 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:21:26,635 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 10:21:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:26,684 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:26,813 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 52 treesize of output 48 [2025-02-06 10:21:26,828 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:21:26,828 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 46 treesize of output 64 [2025-02-06 10:21:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:26,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114543717] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:26,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:26,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2025-02-06 10:21:26,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012812269] [2025-02-06 10:21:26,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:26,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 10:21:26,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:26,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 10:21:26,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:21:26,948 INFO L87 Difference]: Start difference. First operand 106 states and 130 transitions. Second operand has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:27,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:27,252 INFO L93 Difference]: Finished difference Result 161 states and 206 transitions. [2025-02-06 10:21:27,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:21:27,252 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-02-06 10:21:27,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:27,253 INFO L225 Difference]: With dead ends: 161 [2025-02-06 10:21:27,253 INFO L226 Difference]: Without dead ends: 161 [2025-02-06 10:21:27,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=526, Unknown=0, NotChecked=0, Total=702 [2025-02-06 10:21:27,253 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 103 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:27,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 120 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2025-02-06 10:21:27,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 120. [2025-02-06 10:21:27,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.3043478260869565) internal successors, (150), 119 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:27,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 150 transitions. [2025-02-06 10:21:27,256 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 150 transitions. Word has length 32 [2025-02-06 10:21:27,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:27,256 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 150 transitions. [2025-02-06 10:21:27,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.529411764705882) internal successors, (94), 18 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 150 transitions. [2025-02-06 10:21:27,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-02-06 10:21:27,257 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:27,257 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:27,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:27,457 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 10:21:27,458 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:27,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:27,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1004229550, now seen corresponding path program 1 times [2025-02-06 10:21:27,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:27,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526938427] [2025-02-06 10:21:27,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:27,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:27,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 10:21:27,475 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 10:21:27,475 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:27,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:27,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:27,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526938427] [2025-02-06 10:21:27,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526938427] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:27,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982421067] [2025-02-06 10:21:27,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:27,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:27,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:27,610 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:27,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-06 10:21:27,663 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-02-06 10:21:27,684 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-02-06 10:21:27,684 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:27,684 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:27,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 47 conjuncts are in the unsatisfiable core [2025-02-06 10:21:27,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:27,730 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 10:21:27,766 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 10:21:27,850 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 10:21:27,850 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:27,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-02-06 10:21:27,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-06 10:21:27,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2025-02-06 10:21:27,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2025-02-06 10:21:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 10:21:27,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982421067] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:27,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:27,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15, 15] total 22 [2025-02-06 10:21:27,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495466019] [2025-02-06 10:21:27,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:27,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-06 10:21:27,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:27,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-06 10:21:27,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2025-02-06 10:21:27,955 INFO L87 Difference]: Start difference. First operand 120 states and 150 transitions. Second operand has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:28,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:28,597 INFO L93 Difference]: Finished difference Result 153 states and 181 transitions. [2025-02-06 10:21:28,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2025-02-06 10:21:28,598 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-02-06 10:21:28,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:28,598 INFO L225 Difference]: With dead ends: 153 [2025-02-06 10:21:28,598 INFO L226 Difference]: Without dead ends: 153 [2025-02-06 10:21:28,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=307, Invalid=2773, Unknown=0, NotChecked=0, Total=3080 [2025-02-06 10:21:28,600 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 168 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:28,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 144 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:21:28,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2025-02-06 10:21:28,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 135. [2025-02-06 10:21:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.2846153846153847) internal successors, (167), 134 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:28,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 167 transitions. [2025-02-06 10:21:28,605 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 167 transitions. Word has length 33 [2025-02-06 10:21:28,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:28,605 INFO L471 AbstractCegarLoop]: Abstraction has 135 states and 167 transitions. [2025-02-06 10:21:28,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:28,606 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 167 transitions. [2025-02-06 10:21:28,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-06 10:21:28,606 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:28,606 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1] [2025-02-06 10:21:28,615 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2025-02-06 10:21:28,807 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 10:21:28,808 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:28,808 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:28,808 INFO L85 PathProgramCache]: Analyzing trace with hash 225012470, now seen corresponding path program 2 times [2025-02-06 10:21:28,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:28,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327019102] [2025-02-06 10:21:28,808 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:28,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:28,820 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-02-06 10:21:28,830 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 10:21:28,830 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:28,831 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-02-06 10:21:28,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:29,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327019102] [2025-02-06 10:21:29,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327019102] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:29,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131093108] [2025-02-06 10:21:29,001 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:29,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:29,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:29,005 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:29,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2025-02-06 10:21:29,066 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-02-06 10:21:29,089 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 10:21:29,089 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:29,089 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:29,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 10:21:29,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 10:21:29,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:29,208 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 10:21:29,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131093108] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:29,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:29,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2025-02-06 10:21:29,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422963773] [2025-02-06 10:21:29,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:29,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:21:29,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:29,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:21:29,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:21:29,209 INFO L87 Difference]: Start difference. First operand 135 states and 167 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:29,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:29,459 INFO L93 Difference]: Finished difference Result 138 states and 165 transitions. [2025-02-06 10:21:29,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2025-02-06 10:21:29,459 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-02-06 10:21:29,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:29,460 INFO L225 Difference]: With dead ends: 138 [2025-02-06 10:21:29,460 INFO L226 Difference]: Without dead ends: 138 [2025-02-06 10:21:29,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2025-02-06 10:21:29,461 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 48 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:29,461 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 63 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:29,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-02-06 10:21:29,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 124. [2025-02-06 10:21:29,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 120 states have (on average 1.2333333333333334) internal successors, (148), 123 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2025-02-06 10:21:29,463 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 36 [2025-02-06 10:21:29,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:29,463 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2025-02-06 10:21:29,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:29,463 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2025-02-06 10:21:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-06 10:21:29,463 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:29,463 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:29,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-06 10:21:29,663 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 10:21:29,664 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:29,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:29,664 INFO L85 PathProgramCache]: Analyzing trace with hash 459771604, now seen corresponding path program 1 times [2025-02-06 10:21:29,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:29,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842773125] [2025-02-06 10:21:29,664 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:29,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:29,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 10:21:29,678 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 10:21:29,678 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:29,678 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:29,758 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:29,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842773125] [2025-02-06 10:21:29,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842773125] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:29,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422783597] [2025-02-06 10:21:29,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:29,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:29,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:29,760 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:29,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2025-02-06 10:21:29,830 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 10:21:29,850 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 10:21:29,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:29,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:29,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-02-06 10:21:29,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:29,911 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:29,911 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-06 10:21:29,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422783597] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:29,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:29,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2025-02-06 10:21:29,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258740106] [2025-02-06 10:21:29,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:29,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:21:29,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:29,958 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:21:29,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:21:29,958 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:30,061 INFO L93 Difference]: Finished difference Result 119 states and 139 transitions. [2025-02-06 10:21:30,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:21:30,063 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2025-02-06 10:21:30,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:30,063 INFO L225 Difference]: With dead ends: 119 [2025-02-06 10:21:30,063 INFO L226 Difference]: Without dead ends: 119 [2025-02-06 10:21:30,064 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2025-02-06 10:21:30,065 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 77 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:30,065 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 113 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2025-02-06 10:21:30,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2025-02-06 10:21:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.208695652173913) internal successors, (139), 118 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2025-02-06 10:21:30,068 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 36 [2025-02-06 10:21:30,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:30,068 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2025-02-06 10:21:30,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:30,068 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2025-02-06 10:21:30,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2025-02-06 10:21:30,070 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:30,070 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2025-02-06 10:21:30,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2025-02-06 10:21:30,270 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 10:21:30,270 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:30,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:30,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1569172619, now seen corresponding path program 1 times [2025-02-06 10:21:30,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:30,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848883961] [2025-02-06 10:21:30,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:30,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:30,281 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-06 10:21:30,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 10:21:30,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:30,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 41 proven. 35 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 10:21:30,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:30,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848883961] [2025-02-06 10:21:30,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848883961] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:30,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792861890] [2025-02-06 10:21:30,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:21:30,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:30,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:30,391 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:30,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2025-02-06 10:21:30,459 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 52 statements into 1 equivalence classes. [2025-02-06 10:21:30,488 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 52 of 52 statements. [2025-02-06 10:21:30,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:21:30,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:30,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:21:30,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 52 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 10:21:30,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:30,608 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 52 proven. 24 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-06 10:21:30,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792861890] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:30,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:30,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2025-02-06 10:21:30,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40193973] [2025-02-06 10:21:30,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:30,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:21:30,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:30,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:21:30,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2025-02-06 10:21:30,609 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:30,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:30,715 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2025-02-06 10:21:30,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:21:30,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 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 52 [2025-02-06 10:21:30,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:30,716 INFO L225 Difference]: With dead ends: 138 [2025-02-06 10:21:30,716 INFO L226 Difference]: Without dead ends: 138 [2025-02-06 10:21:30,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:21:30,716 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 44 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:30,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 155 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:30,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2025-02-06 10:21:30,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 126. [2025-02-06 10:21:30,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 125 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:30,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 145 transitions. [2025-02-06 10:21:30,720 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 145 transitions. Word has length 52 [2025-02-06 10:21:30,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:30,720 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 145 transitions. [2025-02-06 10:21:30,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 145 transitions. [2025-02-06 10:21:30,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-02-06 10:21:30,721 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:30,721 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2025-02-06 10:21:30,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:30,921 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 10:21:30,921 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:30,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:30,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2088794649, now seen corresponding path program 2 times [2025-02-06 10:21:30,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:30,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971430873] [2025-02-06 10:21:30,922 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:30,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:30,951 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 2 equivalence classes. [2025-02-06 10:21:30,954 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 55 statements. [2025-02-06 10:21:30,954 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:30,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-06 10:21:31,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:31,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971430873] [2025-02-06 10:21:31,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971430873] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:31,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576230202] [2025-02-06 10:21:31,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:31,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:31,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:31,012 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:31,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2025-02-06 10:21:31,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 2 equivalence classes. [2025-02-06 10:21:31,093 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 6 of 55 statements. [2025-02-06 10:21:31,093 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-06 10:21:31,093 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:31,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 20 conjuncts are in the unsatisfiable core [2025-02-06 10:21:31,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:31,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-02-06 10:21:31,253 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-06 10:21:31,253 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2025-02-06 10:21:31,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576230202] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:31,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:31,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2025-02-06 10:21:31,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208112992] [2025-02-06 10:21:31,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:31,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-06 10:21:31,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:31,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-06 10:21:31,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2025-02-06 10:21:31,401 INFO L87 Difference]: Start difference. First operand 126 states and 145 transitions. Second operand has 13 states, 12 states have (on average 6.25) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:31,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:31,514 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2025-02-06 10:21:31,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:21:31,514 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2025-02-06 10:21:31,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:31,515 INFO L225 Difference]: With dead ends: 125 [2025-02-06 10:21:31,515 INFO L226 Difference]: Without dead ends: 125 [2025-02-06 10:21:31,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:21:31,515 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 17 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:31,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 105 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2025-02-06 10:21:31,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2025-02-06 10:21:31,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 124 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2025-02-06 10:21:31,517 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 55 [2025-02-06 10:21:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:31,517 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2025-02-06 10:21:31,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 13 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2025-02-06 10:21:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-06 10:21:31,518 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:31,518 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2025-02-06 10:21:31,524 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 10:21:31,718 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 10:21:31,718 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:31,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1795228515, now seen corresponding path program 2 times [2025-02-06 10:21:31,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:31,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113835857] [2025-02-06 10:21:31,719 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:31,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:31,728 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 58 statements into 2 equivalence classes. [2025-02-06 10:21:31,738 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 10:21:31,738 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:31,738 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 19 proven. 45 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2025-02-06 10:21:31,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113835857] [2025-02-06 10:21:31,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113835857] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:31,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062076935] [2025-02-06 10:21:31,976 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:31,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:31,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:31,978 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:31,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2025-02-06 10:21:32,054 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 58 statements into 2 equivalence classes. [2025-02-06 10:21:32,099 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 58 of 58 statements. [2025-02-06 10:21:32,099 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:32,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:32,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 25 conjuncts are in the unsatisfiable core [2025-02-06 10:21:32,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:32,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:21:32,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2025-02-06 10:21:32,258 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:21:32,258 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 10:21:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 48 proven. 52 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 10:21:32,335 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:32,464 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 52 treesize of output 48 [2025-02-06 10:21:32,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:21:32,476 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 46 treesize of output 64 [2025-02-06 10:21:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 48 proven. 52 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2025-02-06 10:21:32,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062076935] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:32,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:32,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2025-02-06 10:21:32,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875240644] [2025-02-06 10:21:32,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:32,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 10:21:32,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:32,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 10:21:32,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2025-02-06 10:21:32,635 INFO L87 Difference]: Start difference. First operand 125 states and 140 transitions. Second operand has 24 states, 23 states have (on average 5.913043478260869) internal successors, (136), 24 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 10:21:33,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:33,335 INFO L93 Difference]: Finished difference Result 176 states and 198 transitions. [2025-02-06 10:21:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2025-02-06 10:21:33,336 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.913043478260869) internal successors, (136), 24 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) Word has length 58 [2025-02-06 10:21:33,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:33,336 INFO L225 Difference]: With dead ends: 176 [2025-02-06 10:21:33,336 INFO L226 Difference]: Without dead ends: 176 [2025-02-06 10:21:33,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=568, Invalid=1982, Unknown=0, NotChecked=0, Total=2550 [2025-02-06 10:21:33,337 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 127 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:33,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 169 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:33,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2025-02-06 10:21:33,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 121. [2025-02-06 10:21:33,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 119 states have (on average 1.1260504201680672) internal successors, (134), 120 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:33,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 134 transitions. [2025-02-06 10:21:33,340 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 134 transitions. Word has length 58 [2025-02-06 10:21:33,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:33,340 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 134 transitions. [2025-02-06 10:21:33,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.913043478260869) internal successors, (136), 24 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 10:21:33,340 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 134 transitions. [2025-02-06 10:21:33,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2025-02-06 10:21:33,341 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:33,341 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1] [2025-02-06 10:21:33,347 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2025-02-06 10:21:33,545 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 10:21:33,545 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:33,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:33,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1199981923, now seen corresponding path program 2 times [2025-02-06 10:21:33,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:33,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572024897] [2025-02-06 10:21:33,545 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:33,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:33,559 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 90 statements into 2 equivalence classes. [2025-02-06 10:21:33,579 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 90 of 90 statements. [2025-02-06 10:21:33,579 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:33,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 189 proven. 75 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2025-02-06 10:21:33,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:33,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572024897] [2025-02-06 10:21:33,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572024897] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:33,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630937135] [2025-02-06 10:21:33,725 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:33,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:33,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:33,728 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:33,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2025-02-06 10:21:33,824 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 90 statements into 2 equivalence classes. [2025-02-06 10:21:33,869 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 90 of 90 statements. [2025-02-06 10:21:33,869 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:33,869 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:33,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-06 10:21:33,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:33,956 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 201 proven. 42 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-02-06 10:21:33,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 201 proven. 42 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2025-02-06 10:21:34,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630937135] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:34,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:34,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2025-02-06 10:21:34,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345550707] [2025-02-06 10:21:34,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:34,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-06 10:21:34,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:34,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-06 10:21:34,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2025-02-06 10:21:34,057 INFO L87 Difference]: Start difference. First operand 121 states and 134 transitions. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:34,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:34,344 INFO L93 Difference]: Finished difference Result 144 states and 157 transitions. [2025-02-06 10:21:34,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-06 10:21:34,344 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2025-02-06 10:21:34,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:34,345 INFO L225 Difference]: With dead ends: 144 [2025-02-06 10:21:34,345 INFO L226 Difference]: Without dead ends: 144 [2025-02-06 10:21:34,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 170 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2025-02-06 10:21:34,345 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 38 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:34,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 299 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:34,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2025-02-06 10:21:34,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2025-02-06 10:21:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 139 states have (on average 1.1079136690647482) internal successors, (154), 140 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 154 transitions. [2025-02-06 10:21:34,350 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 154 transitions. Word has length 90 [2025-02-06 10:21:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:34,350 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 154 transitions. [2025-02-06 10:21:34,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 154 transitions. [2025-02-06 10:21:34,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-02-06 10:21:34,351 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:34,351 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 7, 7, 7, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1] [2025-02-06 10:21:34,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2025-02-06 10:21:34,552 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 10:21:34,552 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:34,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash 837821201, now seen corresponding path program 3 times [2025-02-06 10:21:34,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:34,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722466656] [2025-02-06 10:21:34,553 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:34,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:34,571 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 102 statements into 6 equivalence classes. [2025-02-06 10:21:34,610 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 68 of 102 statements. [2025-02-06 10:21:34,610 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-06 10:21:34,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 212 proven. 83 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-02-06 10:21:34,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:34,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722466656] [2025-02-06 10:21:34,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722466656] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:34,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59341013] [2025-02-06 10:21:34,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:34,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:34,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:34,815 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:34,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2025-02-06 10:21:34,961 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 102 statements into 6 equivalence classes. [2025-02-06 10:21:35,248 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) and asserted 68 of 102 statements. [2025-02-06 10:21:35,249 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2025-02-06 10:21:35,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:35,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-02-06 10:21:35,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 16 proven. 287 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2025-02-06 10:21:35,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:35,647 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 25 proven. 278 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2025-02-06 10:21:35,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59341013] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:35,647 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:35,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2025-02-06 10:21:35,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448910427] [2025-02-06 10:21:35,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:35,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:21:35,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:35,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:21:35,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:21:35,648 INFO L87 Difference]: Start difference. First operand 141 states and 154 transitions. Second operand has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:36,149 INFO L93 Difference]: Finished difference Result 160 states and 173 transitions. [2025-02-06 10:21:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-06 10:21:36,149 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 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 102 [2025-02-06 10:21:36,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:36,149 INFO L225 Difference]: With dead ends: 160 [2025-02-06 10:21:36,150 INFO L226 Difference]: Without dead ends: 160 [2025-02-06 10:21:36,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=564, Invalid=1692, Unknown=0, NotChecked=0, Total=2256 [2025-02-06 10:21:36,152 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 113 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:36,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 96 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:36,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2025-02-06 10:21:36,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 150. [2025-02-06 10:21:36,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 148 states have (on average 1.1013513513513513) internal successors, (163), 149 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 163 transitions. [2025-02-06 10:21:36,158 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 163 transitions. Word has length 102 [2025-02-06 10:21:36,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:36,158 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 163 transitions. [2025-02-06 10:21:36,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.08) internal successors, (127), 25 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:36,158 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 163 transitions. [2025-02-06 10:21:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2025-02-06 10:21:36,166 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:36,166 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1] [2025-02-06 10:21:36,184 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 10:21:36,366 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 10:21:36,367 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:36,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:36,367 INFO L85 PathProgramCache]: Analyzing trace with hash -986426385, now seen corresponding path program 4 times [2025-02-06 10:21:36,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:36,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564240806] [2025-02-06 10:21:36,367 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:21:36,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:36,392 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 108 statements into 2 equivalence classes. [2025-02-06 10:21:36,498 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 108 of 108 statements. [2025-02-06 10:21:36,498 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:21:36,498 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 229 proven. 25 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2025-02-06 10:21:36,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:36,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564240806] [2025-02-06 10:21:36,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564240806] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:36,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437860026] [2025-02-06 10:21:36,695 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:21:36,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:36,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:36,698 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:36,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2025-02-06 10:21:36,803 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 108 statements into 2 equivalence classes. [2025-02-06 10:21:37,052 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 108 of 108 statements. [2025-02-06 10:21:37,052 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:21:37,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:37,055 INFO L256 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 10:21:37,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:37,119 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 229 proven. 25 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2025-02-06 10:21:37,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 229 proven. 25 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2025-02-06 10:21:37,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437860026] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:37,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:37,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2025-02-06 10:21:37,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675053879] [2025-02-06 10:21:37,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:37,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-02-06 10:21:37,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:37,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-02-06 10:21:37,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2025-02-06 10:21:37,185 INFO L87 Difference]: Start difference. First operand 150 states and 163 transitions. Second operand has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:37,340 INFO L93 Difference]: Finished difference Result 186 states and 202 transitions. [2025-02-06 10:21:37,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-06 10:21:37,340 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2025-02-06 10:21:37,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:37,341 INFO L225 Difference]: With dead ends: 186 [2025-02-06 10:21:37,341 INFO L226 Difference]: Without dead ends: 186 [2025-02-06 10:21:37,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 203 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:21:37,341 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 49 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:37,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 129 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2025-02-06 10:21:37,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 163. [2025-02-06 10:21:37,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 161 states have (on average 1.0993788819875776) internal successors, (177), 162 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 177 transitions. [2025-02-06 10:21:37,345 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 177 transitions. Word has length 108 [2025-02-06 10:21:37,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:37,345 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 177 transitions. [2025-02-06 10:21:37,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:37,345 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 177 transitions. [2025-02-06 10:21:37,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2025-02-06 10:21:37,345 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:37,345 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1] [2025-02-06 10:21:37,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:37,546 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 10:21:37,547 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:37,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:37,547 INFO L85 PathProgramCache]: Analyzing trace with hash -901730879, now seen corresponding path program 5 times [2025-02-06 10:21:37,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:37,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068096705] [2025-02-06 10:21:37,547 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:21:37,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:37,561 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 111 statements into 6 equivalence classes. [2025-02-06 10:21:37,649 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 111 of 111 statements. [2025-02-06 10:21:37,649 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-06 10:21:37,649 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 8 proven. 417 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2025-02-06 10:21:39,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:39,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068096705] [2025-02-06 10:21:39,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068096705] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:39,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635701493] [2025-02-06 10:21:39,149 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:21:39,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:39,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:39,152 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:39,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2025-02-06 10:21:39,258 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 111 statements into 6 equivalence classes. [2025-02-06 10:21:39,580 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 111 of 111 statements. [2025-02-06 10:21:39,580 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-06 10:21:39,580 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:39,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 59 conjuncts are in the unsatisfiable core [2025-02-06 10:21:39,586 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:39,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2025-02-06 10:21:39,620 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-02-06 10:21:39,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2025-02-06 10:21:39,662 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 10:21:39,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:21:39,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:21:39,814 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2025-02-06 10:21:39,814 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 16 treesize of output 18 [2025-02-06 10:21:39,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:21:39,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:21:39,958 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:21:39,958 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 10:21:40,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:21:40,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:21:40,111 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:21:40,111 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 10:21:40,257 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:21:40,257 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 10:21:40,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-02-06 10:21:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 401 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-02-06 10:21:40,435 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:40,662 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:21:40,662 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 43 treesize of output 61 [2025-02-06 10:21:40,923 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:21:40,923 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 43 treesize of output 61 [2025-02-06 10:21:41,185 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:21:41,185 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 43 treesize of output 61 [2025-02-06 10:21:41,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:21:41,536 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 61 treesize of output 79 [2025-02-06 10:21:41,696 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 401 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2025-02-06 10:21:41,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635701493] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:41,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:41,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 13] total 47 [2025-02-06 10:21:41,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181002376] [2025-02-06 10:21:41,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:41,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-06 10:21:41,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:41,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-06 10:21:41,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1853, Unknown=0, NotChecked=0, Total=2256 [2025-02-06 10:21:41,698 INFO L87 Difference]: Start difference. First operand 163 states and 177 transitions. Second operand has 48 states, 47 states have (on average 4.574468085106383) internal successors, (215), 48 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:45,147 INFO L93 Difference]: Finished difference Result 343 states and 375 transitions. [2025-02-06 10:21:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2025-02-06 10:21:45,151 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.574468085106383) internal successors, (215), 48 states have internal predecessors, (215), 0 states have call successors, (0), 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 10:21:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:45,153 INFO L225 Difference]: With dead ends: 343 [2025-02-06 10:21:45,156 INFO L226 Difference]: Without dead ends: 343 [2025-02-06 10:21:45,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1657, Invalid=7085, Unknown=0, NotChecked=0, Total=8742 [2025-02-06 10:21:45,158 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 827 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:45,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 355 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 10:21:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2025-02-06 10:21:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 341. [2025-02-06 10:21:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 339 states have (on average 1.1002949852507375) internal successors, (373), 340 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 373 transitions. [2025-02-06 10:21:45,173 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 373 transitions. Word has length 111 [2025-02-06 10:21:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:45,173 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 373 transitions. [2025-02-06 10:21:45,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.574468085106383) internal successors, (215), 48 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 373 transitions. [2025-02-06 10:21:45,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2025-02-06 10:21:45,174 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:45,174 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:45,182 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2025-02-06 10:21:45,374 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 10:21:45,379 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:45,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:45,379 INFO L85 PathProgramCache]: Analyzing trace with hash 49587910, now seen corresponding path program 2 times [2025-02-06 10:21:45,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:45,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172479056] [2025-02-06 10:21:45,379 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:45,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:45,395 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 154 statements into 2 equivalence classes. [2025-02-06 10:21:45,411 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 154 of 154 statements. [2025-02-06 10:21:45,412 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:45,412 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 791 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2025-02-06 10:21:45,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:45,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172479056] [2025-02-06 10:21:45,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172479056] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:45,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187144602] [2025-02-06 10:21:45,549 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:21:45,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:45,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:45,553 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:45,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2025-02-06 10:21:45,680 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 154 statements into 2 equivalence classes. [2025-02-06 10:21:45,749 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 154 of 154 statements. [2025-02-06 10:21:45,749 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:21:45,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:45,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 10:21:45,755 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 596 proven. 223 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-06 10:21:46,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:46,227 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 596 proven. 223 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2025-02-06 10:21:46,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187144602] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:46,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:46,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 25 [2025-02-06 10:21:46,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299734340] [2025-02-06 10:21:46,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:46,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:21:46,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:46,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:21:46,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:21:46,229 INFO L87 Difference]: Start difference. First operand 341 states and 373 transitions. Second operand has 25 states, 25 states have (on average 8.24) internal successors, (206), 25 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:46,717 INFO L93 Difference]: Finished difference Result 383 states and 414 transitions. [2025-02-06 10:21:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2025-02-06 10:21:46,718 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.24) internal successors, (206), 25 states have internal predecessors, (206), 0 states have call successors, (0), 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 154 [2025-02-06 10:21:46,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:46,719 INFO L225 Difference]: With dead ends: 383 [2025-02-06 10:21:46,719 INFO L226 Difference]: Without dead ends: 383 [2025-02-06 10:21:46,720 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 286 SyntacticMatches, 6 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=700, Invalid=2722, Unknown=0, NotChecked=0, Total=3422 [2025-02-06 10:21:46,720 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 202 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:46,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 321 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:46,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2025-02-06 10:21:46,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 365. [2025-02-06 10:21:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 363 states have (on average 1.0909090909090908) internal successors, (396), 364 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 396 transitions. [2025-02-06 10:21:46,730 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 396 transitions. Word has length 154 [2025-02-06 10:21:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:46,730 INFO L471 AbstractCegarLoop]: Abstraction has 365 states and 396 transitions. [2025-02-06 10:21:46,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.24) internal successors, (206), 25 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 396 transitions. [2025-02-06 10:21:46,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2025-02-06 10:21:46,731 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:46,731 INFO L218 NwaCegarLoop]: trace histogram [20, 20, 20, 20, 18, 18, 18, 7, 7, 7, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:46,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2025-02-06 10:21:46,936 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 10:21:46,936 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:46,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:46,937 INFO L85 PathProgramCache]: Analyzing trace with hash -420483795, now seen corresponding path program 3 times [2025-02-06 10:21:46,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:46,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061487854] [2025-02-06 10:21:46,937 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:46,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:46,962 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 198 statements into 9 equivalence classes. [2025-02-06 10:21:47,006 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 100 of 198 statements. [2025-02-06 10:21:47,010 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 10:21:47,010 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 600 proven. 22 refuted. 0 times theorem prover too weak. 1038 trivial. 0 not checked. [2025-02-06 10:21:47,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:47,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061487854] [2025-02-06 10:21:47,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061487854] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:47,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571207836] [2025-02-06 10:21:47,195 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:21:47,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:47,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:47,197 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:21:47,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2025-02-06 10:21:47,345 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 198 statements into 9 equivalence classes. [2025-02-06 10:21:47,421 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 100 of 198 statements. [2025-02-06 10:21:47,421 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-02-06 10:21:47,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:47,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-06 10:21:47,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:47,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 600 proven. 22 refuted. 0 times theorem prover too weak. 1038 trivial. 0 not checked. [2025-02-06 10:21:47,527 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1660 backedges. 600 proven. 22 refuted. 0 times theorem prover too weak. 1038 trivial. 0 not checked. [2025-02-06 10:21:47,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571207836] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:47,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:47,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2025-02-06 10:21:47,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862064910] [2025-02-06 10:21:47,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:47,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-06 10:21:47,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:47,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-06 10:21:47,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2025-02-06 10:21:47,699 INFO L87 Difference]: Start difference. First operand 365 states and 396 transitions. Second operand has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:48,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:48,075 INFO L93 Difference]: Finished difference Result 1271 states and 1423 transitions. [2025-02-06 10:21:48,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2025-02-06 10:21:48,075 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2025-02-06 10:21:48,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:48,078 INFO L225 Difference]: With dead ends: 1271 [2025-02-06 10:21:48,079 INFO L226 Difference]: Without dead ends: 1271 [2025-02-06 10:21:48,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=806, Invalid=1546, Unknown=0, NotChecked=0, Total=2352 [2025-02-06 10:21:48,080 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 241 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:48,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 96 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:48,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2025-02-06 10:21:48,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 970. [2025-02-06 10:21:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 968 states have (on average 1.1229338842975207) internal successors, (1087), 969 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1087 transitions. [2025-02-06 10:21:48,090 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1087 transitions. Word has length 198 [2025-02-06 10:21:48,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:48,092 INFO L471 AbstractCegarLoop]: Abstraction has 970 states and 1087 transitions. [2025-02-06 10:21:48,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.76) internal successors, (94), 25 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:48,092 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1087 transitions. [2025-02-06 10:21:48,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2025-02-06 10:21:48,093 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:48,093 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 20, 20, 20, 20, 7, 7, 7, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:48,101 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 10:21:48,293 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 10:21:48,293 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:48,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:48,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1442585465, now seen corresponding path program 4 times [2025-02-06 10:21:48,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:48,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107753624] [2025-02-06 10:21:48,295 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:21:48,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:48,316 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 222 statements into 2 equivalence classes. [2025-02-06 10:21:48,408 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 222 of 222 statements. [2025-02-06 10:21:48,409 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:21:48,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 1377 proven. 38 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2025-02-06 10:21:48,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:48,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107753624] [2025-02-06 10:21:48,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107753624] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:48,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729890745] [2025-02-06 10:21:48,654 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:21:48,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:48,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:48,662 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 10:21:48,668 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 10:21:48,882 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 222 statements into 2 equivalence classes. [2025-02-06 10:21:50,105 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 222 of 222 statements. [2025-02-06 10:21:50,105 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:21:50,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:50,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 10:21:50,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:50,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 1387 proven. 28 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2025-02-06 10:21:50,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:50,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2232 backedges. 1387 proven. 28 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2025-02-06 10:21:50,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729890745] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:50,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:50,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 18 [2025-02-06 10:21:50,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179295614] [2025-02-06 10:21:50,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:50,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-02-06 10:21:50,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:50,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-02-06 10:21:50,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2025-02-06 10:21:50,337 INFO L87 Difference]: Start difference. First operand 970 states and 1087 transitions. Second operand has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:50,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:50,572 INFO L93 Difference]: Finished difference Result 1081 states and 1202 transitions. [2025-02-06 10:21:50,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 10:21:50,573 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2025-02-06 10:21:50,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:50,576 INFO L225 Difference]: With dead ends: 1081 [2025-02-06 10:21:50,576 INFO L226 Difference]: Without dead ends: 1081 [2025-02-06 10:21:50,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 430 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=781, Unknown=0, NotChecked=0, Total=1056 [2025-02-06 10:21:50,577 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 55 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:50,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 114 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:50,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2025-02-06 10:21:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1004. [2025-02-06 10:21:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1004 states, 1002 states have (on average 1.1197604790419162) internal successors, (1122), 1003 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:50,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1004 states to 1004 states and 1122 transitions. [2025-02-06 10:21:50,590 INFO L78 Accepts]: Start accepts. Automaton has 1004 states and 1122 transitions. Word has length 222 [2025-02-06 10:21:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:50,590 INFO L471 AbstractCegarLoop]: Abstraction has 1004 states and 1122 transitions. [2025-02-06 10:21:50,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.888888888888889) internal successors, (88), 18 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:50,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1004 states and 1122 transitions. [2025-02-06 10:21:50,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2025-02-06 10:21:50,594 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:50,595 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 21, 21, 21, 21, 7, 7, 7, 7, 7, 7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:50,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2025-02-06 10:21:50,798 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 10:21:50,799 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:50,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash 763761419, now seen corresponding path program 5 times [2025-02-06 10:21:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167239274] [2025-02-06 10:21:50,799 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:21:50,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:50,821 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 226 statements into 12 equivalence classes. [2025-02-06 10:21:50,911 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 177 of 226 statements. [2025-02-06 10:21:50,911 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-02-06 10:21:50,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:51,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2319 backedges. 1142 proven. 243 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2025-02-06 10:21:51,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:51,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167239274] [2025-02-06 10:21:51,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167239274] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:51,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326931813] [2025-02-06 10:21:51,123 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-06 10:21:51,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:51,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:51,128 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 10:21:51,129 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 10:21:51,298 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 226 statements into 12 equivalence classes. [2025-02-06 10:21:52,564 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) and asserted 177 of 226 statements. [2025-02-06 10:21:52,564 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2025-02-06 10:21:52,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:52,571 INFO L256 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:21:52,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2319 backedges. 1142 proven. 243 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2025-02-06 10:21:52,753 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:52,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2319 backedges. 1142 proven. 243 refuted. 0 times theorem prover too weak. 934 trivial. 0 not checked. [2025-02-06 10:21:52,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326931813] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:52,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:52,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2025-02-06 10:21:52,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244962656] [2025-02-06 10:21:52,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:52,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-02-06 10:21:52,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:52,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-02-06 10:21:52,876 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2025-02-06 10:21:52,876 INFO L87 Difference]: Start difference. First operand 1004 states and 1122 transitions. Second operand has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:53,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:53,175 INFO L93 Difference]: Finished difference Result 853 states and 948 transitions. [2025-02-06 10:21:53,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2025-02-06 10:21:53,175 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 226 [2025-02-06 10:21:53,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:53,177 INFO L225 Difference]: With dead ends: 853 [2025-02-06 10:21:53,177 INFO L226 Difference]: Without dead ends: 853 [2025-02-06 10:21:53,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 442 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=359, Invalid=1201, Unknown=0, NotChecked=0, Total=1560 [2025-02-06 10:21:53,178 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 199 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:53,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 152 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:21:53,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2025-02-06 10:21:53,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 853. [2025-02-06 10:21:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 851 states have (on average 1.1139835487661576) internal successors, (948), 852 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 948 transitions. [2025-02-06 10:21:53,185 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 948 transitions. Word has length 226 [2025-02-06 10:21:53,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:53,186 INFO L471 AbstractCegarLoop]: Abstraction has 853 states and 948 transitions. [2025-02-06 10:21:53,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.636363636363637) internal successors, (124), 22 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:53,186 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 948 transitions. [2025-02-06 10:21:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2025-02-06 10:21:53,188 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:53,188 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 25, 25, 25, 25, 8, 8, 8, 8, 8, 8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:21:53,198 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 10:21:53,388 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 10:21:53,389 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:53,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:53,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1315227670, now seen corresponding path program 6 times [2025-02-06 10:21:53,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:53,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713083596] [2025-02-06 10:21:53,389 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:21:53,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:53,420 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 262 statements into 12 equivalence classes. [2025-02-06 10:21:53,610 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 262 of 262 statements. [2025-02-06 10:21:53,610 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-02-06 10:21:53,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:53,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 1240 proven. 1360 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2025-02-06 10:21:53,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:53,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713083596] [2025-02-06 10:21:53,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713083596] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:53,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861974994] [2025-02-06 10:21:53,873 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:21:53,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:53,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:53,876 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 10:21:53,885 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 10:21:54,057 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 262 statements into 12 equivalence classes. [2025-02-06 10:21:56,565 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) and asserted 262 of 262 statements. [2025-02-06 10:21:56,566 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2025-02-06 10:21:56,566 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:56,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-06 10:21:56,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:21:56,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 1558 proven. 814 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2025-02-06 10:21:56,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:21:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3177 backedges. 1558 proven. 814 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2025-02-06 10:21:57,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861974994] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:21:57,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:21:57,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 28 [2025-02-06 10:21:57,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537309244] [2025-02-06 10:21:57,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:21:57,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-06 10:21:57,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:21:57,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-06 10:21:57,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2025-02-06 10:21:57,061 INFO L87 Difference]: Start difference. First operand 853 states and 948 transitions. Second operand has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:58,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:21:58,259 INFO L93 Difference]: Finished difference Result 3585 states and 4098 transitions. [2025-02-06 10:21:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2025-02-06 10:21:58,260 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 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 262 [2025-02-06 10:21:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:21:58,288 INFO L225 Difference]: With dead ends: 3585 [2025-02-06 10:21:58,288 INFO L226 Difference]: Without dead ends: 3585 [2025-02-06 10:21:58,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 508 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3933 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=3429, Invalid=6671, Unknown=0, NotChecked=0, Total=10100 [2025-02-06 10:21:58,290 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 381 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:21:58,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 122 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:21:58,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2025-02-06 10:21:58,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 1089. [2025-02-06 10:21:58,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1089 states, 1087 states have (on average 1.1103955841766329) internal successors, (1207), 1088 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:58,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1089 states to 1089 states and 1207 transitions. [2025-02-06 10:21:58,308 INFO L78 Accepts]: Start accepts. Automaton has 1089 states and 1207 transitions. Word has length 262 [2025-02-06 10:21:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:21:58,308 INFO L471 AbstractCegarLoop]: Abstraction has 1089 states and 1207 transitions. [2025-02-06 10:21:58,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.428571428571429) internal successors, (180), 28 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:21:58,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1089 states and 1207 transitions. [2025-02-06 10:21:58,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2025-02-06 10:21:58,310 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:21:58,311 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 34, 34, 34, 11, 11, 11, 11, 11, 10, 10, 9, 2, 1, 1, 1] [2025-02-06 10:21:58,322 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 10:21:58,511 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 10:21:58,513 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:21:58,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:21:58,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1676277935, now seen corresponding path program 6 times [2025-02-06 10:21:58,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:21:58,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146025567] [2025-02-06 10:21:58,514 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:21:58,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:21:58,548 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 351 statements into 15 equivalence classes. [2025-02-06 10:21:58,674 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 205 of 351 statements. [2025-02-06 10:21:58,674 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-06 10:21:58,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:21:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6047 backedges. 1296 proven. 46 refuted. 0 times theorem prover too weak. 4705 trivial. 0 not checked. [2025-02-06 10:21:59,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:21:59,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146025567] [2025-02-06 10:21:59,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146025567] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:21:59,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038618998] [2025-02-06 10:21:59,221 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-06 10:21:59,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:21:59,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:21:59,224 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 10:21:59,229 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 10:21:59,439 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 351 statements into 15 equivalence classes. [2025-02-06 10:22:00,505 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) and asserted 205 of 351 statements. [2025-02-06 10:22:00,505 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2025-02-06 10:22:00,505 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:00,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-06 10:22:00,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6047 backedges. 1303 proven. 39 refuted. 0 times theorem prover too weak. 4705 trivial. 0 not checked. [2025-02-06 10:22:00,697 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:00,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6047 backedges. 1303 proven. 39 refuted. 0 times theorem prover too weak. 4705 trivial. 0 not checked. [2025-02-06 10:22:00,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038618998] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:00,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:00,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2025-02-06 10:22:00,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363702829] [2025-02-06 10:22:00,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:00,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-06 10:22:00,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:00,870 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-06 10:22:00,870 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=731, Unknown=0, NotChecked=0, Total=870 [2025-02-06 10:22:00,870 INFO L87 Difference]: Start difference. First operand 1089 states and 1207 transitions. Second operand has 30 states, 30 states have (on average 3.533333333333333) internal successors, (106), 30 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:01,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:01,474 INFO L93 Difference]: Finished difference Result 1219 states and 1334 transitions. [2025-02-06 10:22:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 10:22:01,474 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.533333333333333) internal successors, (106), 30 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 351 [2025-02-06 10:22:01,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:01,477 INFO L225 Difference]: With dead ends: 1219 [2025-02-06 10:22:01,477 INFO L226 Difference]: Without dead ends: 1219 [2025-02-06 10:22:01,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 731 GetRequests, 680 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 524 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=379, Invalid=1783, Unknown=0, NotChecked=0, Total=2162 [2025-02-06 10:22:01,478 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 67 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:01,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 321 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-06 10:22:01,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2025-02-06 10:22:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1149. [2025-02-06 10:22:01,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1147 states have (on average 1.102005231037489) internal successors, (1264), 1148 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1264 transitions. [2025-02-06 10:22:01,489 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1264 transitions. Word has length 351 [2025-02-06 10:22:01,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:01,489 INFO L471 AbstractCegarLoop]: Abstraction has 1149 states and 1264 transitions. [2025-02-06 10:22:01,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.533333333333333) internal successors, (106), 30 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1264 transitions. [2025-02-06 10:22:01,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2025-02-06 10:22:01,491 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:01,491 INFO L218 NwaCegarLoop]: trace histogram [40, 40, 40, 40, 40, 40, 40, 11, 11, 11, 11, 11, 10, 10, 9, 2, 1, 1, 1] [2025-02-06 10:22:01,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2025-02-06 10:22:01,691 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 10:22:01,692 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:22:01,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1433955297, now seen corresponding path program 7 times [2025-02-06 10:22:01,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:01,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717982211] [2025-02-06 10:22:01,693 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 10:22:01,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:01,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 369 statements into 1 equivalence classes. [2025-02-06 10:22:01,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 369 of 369 statements. [2025-02-06 10:22:01,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:01,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6770 backedges. 3421 proven. 467 refuted. 0 times theorem prover too weak. 2882 trivial. 0 not checked. [2025-02-06 10:22:02,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717982211] [2025-02-06 10:22:02,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717982211] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:02,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704404200] [2025-02-06 10:22:02,493 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-06 10:22:02,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:02,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:02,495 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:02,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2025-02-06 10:22:02,724 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 369 statements into 1 equivalence classes. [2025-02-06 10:22:02,879 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 369 of 369 statements. [2025-02-06 10:22:02,880 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:22:02,880 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:02,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 1958 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-06 10:22:02,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6770 backedges. 4271 proven. 396 refuted. 0 times theorem prover too weak. 2103 trivial. 0 not checked. [2025-02-06 10:22:03,169 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6770 backedges. 4271 proven. 396 refuted. 0 times theorem prover too weak. 2103 trivial. 0 not checked. [2025-02-06 10:22:03,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704404200] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:03,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:03,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 34 [2025-02-06 10:22:03,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261009319] [2025-02-06 10:22:03,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:03,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2025-02-06 10:22:03,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:03,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2025-02-06 10:22:03,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2025-02-06 10:22:03,426 INFO L87 Difference]: Start difference. First operand 1149 states and 1264 transitions. Second operand has 34 states, 34 states have (on average 6.676470588235294) internal successors, (227), 34 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:04,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:04,712 INFO L93 Difference]: Finished difference Result 623 states and 676 transitions. [2025-02-06 10:22:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2025-02-06 10:22:04,713 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 6.676470588235294) internal successors, (227), 34 states have internal predecessors, (227), 0 states have call successors, (0), 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 369 [2025-02-06 10:22:04,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:04,714 INFO L225 Difference]: With dead ends: 623 [2025-02-06 10:22:04,715 INFO L226 Difference]: Without dead ends: 623 [2025-02-06 10:22:04,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 792 GetRequests, 715 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1039, Invalid=4073, Unknown=0, NotChecked=0, Total=5112 [2025-02-06 10:22:04,718 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 95 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1984 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:04,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 620 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1984 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-06 10:22:04,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2025-02-06 10:22:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 611. [2025-02-06 10:22:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 609 states have (on average 1.090311986863711) internal successors, (664), 610 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:04,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 664 transitions. [2025-02-06 10:22:04,726 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 664 transitions. Word has length 369 [2025-02-06 10:22:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:04,726 INFO L471 AbstractCegarLoop]: Abstraction has 611 states and 664 transitions. [2025-02-06 10:22:04,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.676470588235294) internal successors, (227), 34 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:04,726 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 664 transitions. [2025-02-06 10:22:04,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2025-02-06 10:22:04,729 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:04,729 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 40, 40, 40, 11, 11, 11, 11, 11, 10, 10, 9, 2, 1, 1, 1] [2025-02-06 10:22:04,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2025-02-06 10:22:04,930 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 10:22:04,930 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:22:04,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:04,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1249261211, now seen corresponding path program 8 times [2025-02-06 10:22:04,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:04,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765975068] [2025-02-06 10:22:04,931 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:22:04,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:04,985 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 405 statements into 2 equivalence classes. [2025-02-06 10:22:05,082 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 405 of 405 statements. [2025-02-06 10:22:05,083 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:22:05,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8453 backedges. 5080 proven. 799 refuted. 0 times theorem prover too weak. 2574 trivial. 0 not checked. [2025-02-06 10:22:05,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:05,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765975068] [2025-02-06 10:22:05,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765975068] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:05,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141282132] [2025-02-06 10:22:05,772 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:22:05,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:05,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:05,776 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:05,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2025-02-06 10:22:06,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 405 statements into 2 equivalence classes. [2025-02-06 10:22:06,209 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 405 of 405 statements. [2025-02-06 10:22:06,209 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:22:06,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:06,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 2111 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-06 10:22:06,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 8453 backedges. 5151 proven. 728 refuted. 0 times theorem prover too weak. 2574 trivial. 0 not checked. [2025-02-06 10:22:06,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8453 backedges. 5151 proven. 728 refuted. 0 times theorem prover too weak. 2574 trivial. 0 not checked. [2025-02-06 10:22:06,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141282132] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:06,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:06,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 24 [2025-02-06 10:22:06,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670656661] [2025-02-06 10:22:06,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:06,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-06 10:22:06,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:06,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-06 10:22:06,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2025-02-06 10:22:06,686 INFO L87 Difference]: Start difference. First operand 611 states and 664 transitions. Second operand has 24 states, 24 states have (on average 6.375) internal successors, (153), 24 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:07,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:07,108 INFO L93 Difference]: Finished difference Result 654 states and 706 transitions. [2025-02-06 10:22:07,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-02-06 10:22:07,109 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.375) internal successors, (153), 24 states have internal predecessors, (153), 0 states have call successors, (0), 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 405 [2025-02-06 10:22:07,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:07,111 INFO L225 Difference]: With dead ends: 654 [2025-02-06 10:22:07,112 INFO L226 Difference]: Without dead ends: 654 [2025-02-06 10:22:07,115 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 837 GetRequests, 789 SyntacticMatches, 13 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=970, Unknown=0, NotChecked=0, Total=1332 [2025-02-06 10:22:07,116 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 71 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:07,116 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 389 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:22:07,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2025-02-06 10:22:07,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 632. [2025-02-06 10:22:07,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 630 states have (on average 1.0857142857142856) internal successors, (684), 631 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:07,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 684 transitions. [2025-02-06 10:22:07,125 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 684 transitions. Word has length 405 [2025-02-06 10:22:07,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:07,126 INFO L471 AbstractCegarLoop]: Abstraction has 632 states and 684 transitions. [2025-02-06 10:22:07,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.375) internal successors, (153), 24 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:07,127 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 684 transitions. [2025-02-06 10:22:07,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2025-02-06 10:22:07,131 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:07,131 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 45, 45, 45, 11, 11, 11, 11, 11, 10, 10, 9, 2, 1, 1, 1] [2025-02-06 10:22:07,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2025-02-06 10:22:07,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2025-02-06 10:22:07,332 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:22:07,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:07,333 INFO L85 PathProgramCache]: Analyzing trace with hash 593468063, now seen corresponding path program 9 times [2025-02-06 10:22:07,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:07,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276173911] [2025-02-06 10:22:07,333 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:07,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:07,375 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 420 statements into 15 equivalence classes. [2025-02-06 10:22:07,620 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 226 of 420 statements. [2025-02-06 10:22:07,621 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-06 10:22:07,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 1577 proven. 4015 refuted. 0 times theorem prover too weak. 3546 trivial. 0 not checked. [2025-02-06 10:22:09,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:09,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276173911] [2025-02-06 10:22:09,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276173911] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:09,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449705537] [2025-02-06 10:22:09,067 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-06 10:22:09,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:09,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:09,069 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:09,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2025-02-06 10:22:09,324 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 420 statements into 15 equivalence classes. [2025-02-06 10:22:10,041 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 226 of 420 statements. [2025-02-06 10:22:10,042 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-06 10:22:10,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:10,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:22:10,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:22:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 3684 proven. 399 refuted. 0 times theorem prover too weak. 5055 trivial. 0 not checked. [2025-02-06 10:22:10,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:22:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9138 backedges. 3700 proven. 383 refuted. 0 times theorem prover too weak. 5055 trivial. 0 not checked. [2025-02-06 10:22:10,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449705537] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:22:10,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:22:10,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 19] total 52 [2025-02-06 10:22:10,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410003488] [2025-02-06 10:22:10,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:22:10,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-06 10:22:10,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:22:10,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-06 10:22:10,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=2306, Unknown=0, NotChecked=0, Total=2652 [2025-02-06 10:22:10,865 INFO L87 Difference]: Start difference. First operand 632 states and 684 transitions. Second operand has 52 states, 52 states have (on average 3.8653846153846154) internal successors, (201), 52 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:12,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:22:12,349 INFO L93 Difference]: Finished difference Result 739 states and 795 transitions. [2025-02-06 10:22:12,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2025-02-06 10:22:12,349 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.8653846153846154) internal successors, (201), 52 states have internal predecessors, (201), 0 states have call successors, (0), 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 420 [2025-02-06 10:22:12,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:22:12,351 INFO L225 Difference]: With dead ends: 739 [2025-02-06 10:22:12,351 INFO L226 Difference]: Without dead ends: 739 [2025-02-06 10:22:12,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 809 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1873 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1361, Invalid=6471, Unknown=0, NotChecked=0, Total=7832 [2025-02-06 10:22:12,352 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 114 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-06 10:22:12,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 305 Invalid, 1628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-06 10:22:12,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2025-02-06 10:22:12,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 687. [2025-02-06 10:22:12,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 685 states have (on average 1.0817518248175182) internal successors, (741), 686 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:12,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 741 transitions. [2025-02-06 10:22:12,358 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 741 transitions. Word has length 420 [2025-02-06 10:22:12,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:22:12,358 INFO L471 AbstractCegarLoop]: Abstraction has 687 states and 741 transitions. [2025-02-06 10:22:12,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.8653846153846154) internal successors, (201), 52 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:22:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 741 transitions. [2025-02-06 10:22:12,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2025-02-06 10:22:12,360 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:22:12,360 INFO L218 NwaCegarLoop]: trace histogram [49, 49, 49, 49, 49, 49, 49, 11, 11, 11, 11, 11, 10, 10, 9, 2, 1, 1, 1] [2025-02-06 10:22:12,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2025-02-06 10:22:12,564 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2025-02-06 10:22:12,564 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2025-02-06 10:22:12,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:22:12,565 INFO L85 PathProgramCache]: Analyzing trace with hash 959884427, now seen corresponding path program 10 times [2025-02-06 10:22:12,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:22:12,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857918114] [2025-02-06 10:22:12,565 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:22:12,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:22:12,621 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 432 statements into 2 equivalence classes. [2025-02-06 10:22:12,840 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 432 of 432 statements. [2025-02-06 10:22:12,841 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-06 10:22:12,841 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:22:13,633 INFO L134 CoverageAnalysis]: Checked inductivity of 9740 backedges. 6866 proven. 1626 refuted. 0 times theorem prover too weak. 1248 trivial. 0 not checked. [2025-02-06 10:22:13,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:22:13,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857918114] [2025-02-06 10:22:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857918114] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:22:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369876748] [2025-02-06 10:22:13,634 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-06 10:22:13,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:22:13,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:22:13,636 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-06 10:22:13,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2025-02-06 10:22:13,951 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 432 statements into 2 equivalence classes.