./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-broom/sll-fst-data.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-broom/sll-fst-data.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bed4db27359bea712ba9fafe6f7e29c6a936393d32b7ced4d02d6aa8b198e198 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 10:29:50,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 10:29:50,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2025-02-06 10:29:50,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 10:29:50,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 10:29:50,370 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 10:29:50,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 10:29:50,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 10:29:50,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 10:29:50,372 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 10:29:50,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 10:29:50,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 10:29:50,373 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 10:29:50,373 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 10:29:50,374 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 10:29:50,374 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 10:29:50,374 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 10:29:50,374 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 10:29:50,374 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 10:29:50,374 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 10:29:50,374 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 10:29:50,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 10:29:50,375 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 10:29:50,375 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 10:29:50,375 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 10:29:50,375 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 10:29:50,375 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 10:29:50,375 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 10:29:50,375 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 10:29:50,375 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 10:29:50,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:29:50,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 10:29:50,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 10:29:50,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 10:29:50,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 10:29:50,377 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 10:29:50,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 10:29:50,377 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 10:29:50,377 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 10:29:50,377 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bed4db27359bea712ba9fafe6f7e29c6a936393d32b7ced4d02d6aa8b198e198 [2025-02-06 10:29:50,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 10:29:50,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 10:29:50,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 10:29:50,688 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 10:29:50,688 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 10:29:50,690 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-broom/sll-fst-data.i [2025-02-06 10:29:52,085 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/013b34c76/6c429e5fc0444f5a8f7f185226fdfc9e/FLAG864683e0b [2025-02-06 10:29:52,489 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 10:29:52,490 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/memsafety-broom/sll-fst-data.i [2025-02-06 10:29:52,517 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/013b34c76/6c429e5fc0444f5a8f7f185226fdfc9e/FLAG864683e0b [2025-02-06 10:29:52,540 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/013b34c76/6c429e5fc0444f5a8f7f185226fdfc9e [2025-02-06 10:29:52,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 10:29:52,546 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 10:29:52,548 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 10:29:52,549 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 10:29:52,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 10:29:52,554 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@649a78e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52, skipping insertion in model container [2025-02-06 10:29:52,556 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,602 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 10:29:52,839 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:29:52,848 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 10:29:52,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 10:29:52,910 INFO L204 MainTranslator]: Completed translation [2025-02-06 10:29:52,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52 WrapperNode [2025-02-06 10:29:52,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 10:29:52,912 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 10:29:52,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 10:29:52,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 10:29:52,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,950 INFO L138 Inliner]: procedures = 121, calls = 18, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 58 [2025-02-06 10:29:52,950 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 10:29:52,951 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 10:29:52,951 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 10:29:52,951 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 10:29:52,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,979 INFO L175 MemorySlicer]: Split 8 memory accesses to 1 slices as follows [8]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 4 writes are split as follows [4]. [2025-02-06 10:29:52,981 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,981 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,990 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,995 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,997 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:52,999 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 10:29:52,999 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 10:29:52,999 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 10:29:53,000 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 10:29:53,000 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (1/1) ... [2025-02-06 10:29:53,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 10:29:53,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:29:53,032 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 10:29:53,035 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 10:29:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-06 10:29:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2025-02-06 10:29:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2025-02-06 10:29:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-06 10:29:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-02-06 10:29:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-02-06 10:29:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-06 10:29:53,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 10:29:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 10:29:53,129 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 10:29:53,131 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 10:29:53,348 INFO L? ?]: Removed 62 outVars from TransFormulas that were not future-live. [2025-02-06 10:29:53,349 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 10:29:53,356 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 10:29:53,356 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 10:29:53,357 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:29:53 BoogieIcfgContainer [2025-02-06 10:29:53,357 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 10:29:53,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 10:29:53,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 10:29:53,363 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 10:29:53,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 10:29:52" (1/3) ... [2025-02-06 10:29:53,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b1bc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:29:53, skipping insertion in model container [2025-02-06 10:29:53,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 10:29:52" (2/3) ... [2025-02-06 10:29:53,365 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b1bc81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 10:29:53, skipping insertion in model container [2025-02-06 10:29:53,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 10:29:53" (3/3) ... [2025-02-06 10:29:53,367 INFO L128 eAbstractionObserver]: Analyzing ICFG sll-fst-data.i [2025-02-06 10:29:53,381 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 10:29:53,385 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-fst-data.i that has 2 procedures, 59 locations, 1 initial locations, 3 loop locations, and 20 error locations. [2025-02-06 10:29:53,425 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 10:29:53,437 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;@52394f86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 10:29:53,438 INFO L334 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2025-02-06 10:29:53,442 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 55 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:29:53,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 10:29:53,448 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:29:53,449 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 10:29:53,450 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:29:53,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:29:53,457 INFO L85 PathProgramCache]: Analyzing trace with hash 86813983, now seen corresponding path program 1 times [2025-02-06 10:29:53,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:29:53,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260737870] [2025-02-06 10:29:53,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:53,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:29:53,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 10:29:53,557 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 10:29:53,558 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:53,559 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:53,677 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 10:29:53,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:29:53,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260737870] [2025-02-06 10:29:53,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260737870] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:29:53,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:29:53,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:29:53,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078248483] [2025-02-06 10:29:53,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:29:53,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:29:53,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:29:53,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:29:53,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:29:53,712 INFO L87 Difference]: Start difference. First operand has 59 states, 35 states have (on average 1.6857142857142857) internal successors, (59), 55 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:29:53,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:29:53,781 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2025-02-06 10:29:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:29:53,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-06 10:29:53,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:29:53,789 INFO L225 Difference]: With dead ends: 58 [2025-02-06 10:29:53,789 INFO L226 Difference]: Without dead ends: 56 [2025-02-06 10:29:53,792 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 10:29:53,795 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:29:53,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 95 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:29:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-06 10:29:53,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-02-06 10:29:53,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.6176470588235294) internal successors, (55), 52 states have internal predecessors, (55), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:29:53,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 59 transitions. [2025-02-06 10:29:53,833 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 59 transitions. Word has length 5 [2025-02-06 10:29:53,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:29:53,834 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 59 transitions. [2025-02-06 10:29:53,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:29:53,834 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions. [2025-02-06 10:29:53,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-02-06 10:29:53,835 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:29:53,835 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-02-06 10:29:53,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 10:29:53,835 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:29:53,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:29:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash 86813984, now seen corresponding path program 1 times [2025-02-06 10:29:53,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:29:53,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837809161] [2025-02-06 10:29:53,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:53,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:29:53,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-02-06 10:29:53,856 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-02-06 10:29:53,856 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:53,856 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:53,944 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 10:29:53,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:29:53,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837809161] [2025-02-06 10:29:53,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837809161] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:29:53,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:29:53,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 10:29:53,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399393467] [2025-02-06 10:29:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:29:53,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 10:29:53,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:29:53,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 10:29:53,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 10:29:53,947 INFO L87 Difference]: Start difference. First operand 56 states and 59 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:29:53,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:29:53,988 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2025-02-06 10:29:53,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 10:29:53,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2025-02-06 10:29:53,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:29:53,990 INFO L225 Difference]: With dead ends: 55 [2025-02-06 10:29:53,990 INFO L226 Difference]: Without dead ends: 55 [2025-02-06 10:29:53,990 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 10:29:53,991 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 1 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:29:53,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 97 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:29:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-06 10:29:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2025-02-06 10:29:53,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 34 states have (on average 1.588235294117647) internal successors, (54), 51 states have internal predecessors, (54), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:29:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2025-02-06 10:29:54,000 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 5 [2025-02-06 10:29:54,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:29:54,001 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2025-02-06 10:29:54,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-06 10:29:54,001 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2025-02-06 10:29:54,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 10:29:54,001 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:29:54,001 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:29:54,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 10:29:54,002 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:29:54,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:29:54,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1075045763, now seen corresponding path program 1 times [2025-02-06 10:29:54,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:29:54,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474687241] [2025-02-06 10:29:54,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:54,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:29:54,018 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:29:54,027 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:29:54,027 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:54,027 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:54,192 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 10:29:54,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:29:54,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474687241] [2025-02-06 10:29:54,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474687241] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:29:54,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:29:54,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:29:54,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142155817] [2025-02-06 10:29:54,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:29:54,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:29:54,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:29:54,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:29:54,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:29:54,195 INFO L87 Difference]: Start difference. First operand 55 states and 58 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:29:54,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:29:54,318 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2025-02-06 10:29:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:29:54,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2025-02-06 10:29:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:29:54,321 INFO L225 Difference]: With dead ends: 57 [2025-02-06 10:29:54,321 INFO L226 Difference]: Without dead ends: 57 [2025-02-06 10:29:54,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:29:54,322 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 13 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:29:54,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 150 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:29:54,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-02-06 10:29:54,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2025-02-06 10:29:54,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.5) internal successors, (51), 48 states have internal predecessors, (51), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:29:54,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2025-02-06 10:29:54,330 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 10 [2025-02-06 10:29:54,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:29:54,330 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2025-02-06 10:29:54,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:29:54,330 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2025-02-06 10:29:54,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-06 10:29:54,331 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:29:54,331 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:29:54,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 10:29:54,332 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:29:54,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:29:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1075045762, now seen corresponding path program 1 times [2025-02-06 10:29:54,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:29:54,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815387761] [2025-02-06 10:29:54,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:54,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:29:54,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 10:29:54,357 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 10:29:54,358 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:54,358 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:54,524 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 10:29:54,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:29:54,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815387761] [2025-02-06 10:29:54,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815387761] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:29:54,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:29:54,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-06 10:29:54,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121927009] [2025-02-06 10:29:54,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:29:54,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 10:29:54,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:29:54,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 10:29:54,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:29:54,528 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:29:54,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:29:54,622 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2025-02-06 10:29:54,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 10:29:54,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2025-02-06 10:29:54,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:29:54,625 INFO L225 Difference]: With dead ends: 56 [2025-02-06 10:29:54,625 INFO L226 Difference]: Without dead ends: 56 [2025-02-06 10:29:54,626 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-02-06 10:29:54,626 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 6 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:29:54,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 178 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:29:54,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-06 10:29:54,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2025-02-06 10:29:54,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 47 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:29:54,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions. [2025-02-06 10:29:54,636 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 10 [2025-02-06 10:29:54,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:29:54,636 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 54 transitions. [2025-02-06 10:29:54,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:29:54,637 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions. [2025-02-06 10:29:54,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:29:54,637 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:29:54,637 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:29:54,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 10:29:54,638 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:29:54,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:29:54,638 INFO L85 PathProgramCache]: Analyzing trace with hash -646740445, now seen corresponding path program 1 times [2025-02-06 10:29:54,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:29:54,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751825254] [2025-02-06 10:29:54,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:54,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:29:54,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:29:54,661 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:29:54,662 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:54,663 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:54,814 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 10:29:54,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:29:54,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751825254] [2025-02-06 10:29:54,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751825254] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:29:54,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:29:54,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 10:29:54,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332857584] [2025-02-06 10:29:54,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:29:54,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:29:54,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:29:54,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:29:54,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:29:54,816 INFO L87 Difference]: Start difference. First operand 51 states and 54 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:29:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:29:54,955 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2025-02-06 10:29:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:29:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2025-02-06 10:29:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:29:54,957 INFO L225 Difference]: With dead ends: 59 [2025-02-06 10:29:54,957 INFO L226 Difference]: Without dead ends: 59 [2025-02-06 10:29:54,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:29:54,958 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 1 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:29:54,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 196 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:29:54,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-02-06 10:29:54,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2025-02-06 10:29:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 54 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:29:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2025-02-06 10:29:54,964 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 18 [2025-02-06 10:29:54,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:29:54,964 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2025-02-06 10:29:54,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:29:54,964 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2025-02-06 10:29:54,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-02-06 10:29:54,965 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:29:54,965 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:29:54,965 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 10:29:54,966 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:29:54,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:29:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash -646740444, now seen corresponding path program 1 times [2025-02-06 10:29:54,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:29:54,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150449236] [2025-02-06 10:29:54,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:54,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:29:54,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-02-06 10:29:54,983 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-02-06 10:29:54,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:54,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:55,214 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 10:29:55,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:29:55,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150449236] [2025-02-06 10:29:55,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150449236] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:29:55,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:29:55,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-02-06 10:29:55,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021227586] [2025-02-06 10:29:55,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:29:55,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:29:55,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:29:55,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:29:55,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:29:55,217 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:29:55,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:29:55,340 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2025-02-06 10:29:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:29:55,341 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2025-02-06 10:29:55,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:29:55,341 INFO L225 Difference]: With dead ends: 59 [2025-02-06 10:29:55,341 INFO L226 Difference]: Without dead ends: 59 [2025-02-06 10:29:55,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:29:55,342 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 1 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:29:55,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 217 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:29:55,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2025-02-06 10:29:55,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2025-02-06 10:29:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 54 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:29:55,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 63 transitions. [2025-02-06 10:29:55,353 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 63 transitions. Word has length 18 [2025-02-06 10:29:55,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:29:55,353 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 63 transitions. [2025-02-06 10:29:55,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:29:55,353 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 63 transitions. [2025-02-06 10:29:55,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-06 10:29:55,355 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:29:55,355 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:29:55,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 10:29:55,356 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:29:55,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:29:55,356 INFO L85 PathProgramCache]: Analyzing trace with hash 482575737, now seen corresponding path program 1 times [2025-02-06 10:29:55,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:29:55,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329802412] [2025-02-06 10:29:55,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:55,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:29:55,373 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 10:29:55,390 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 10:29:55,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:55,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:55,768 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 10:29:55,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:29:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329802412] [2025-02-06 10:29:55,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329802412] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:29:55,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [122391951] [2025-02-06 10:29:55,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:55,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:29:55,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:29:55,771 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 10:29:55,774 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 10:29:55,825 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 10:29:55,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 10:29:55,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:55,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:55,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 30 conjuncts are in the unsatisfiable core [2025-02-06 10:29:55,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:29:55,899 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 10:29:56,054 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2025-02-06 10:29:56,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:29:56,108 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 10:29:56,129 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:29:56,129 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 10:29:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2025-02-06 10:29:56,132 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:29:56,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [122391951] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:29:56,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:29:56,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2025-02-06 10:29:56,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176433555] [2025-02-06 10:29:56,278 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:29:56,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-06 10:29:56,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:29:56,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-06 10:29:56,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=175, Unknown=1, NotChecked=26, Total=240 [2025-02-06 10:29:56,279 INFO L87 Difference]: Start difference. First operand 58 states and 63 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:29:56,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:29:56,558 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2025-02-06 10:29:56,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:29:56,559 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 20 [2025-02-06 10:29:56,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:29:56,560 INFO L225 Difference]: With dead ends: 68 [2025-02-06 10:29:56,560 INFO L226 Difference]: Without dead ends: 68 [2025-02-06 10:29:56,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=226, Unknown=1, NotChecked=30, Total=306 [2025-02-06 10:29:56,561 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 9 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 67 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:29:56,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 319 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 251 Invalid, 0 Unknown, 67 Unchecked, 0.2s Time] [2025-02-06 10:29:56,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-06 10:29:56,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2025-02-06 10:29:56,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.4375) internal successors, (69), 61 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:29:56,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 75 transitions. [2025-02-06 10:29:56,568 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 75 transitions. Word has length 20 [2025-02-06 10:29:56,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:29:56,568 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 75 transitions. [2025-02-06 10:29:56,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:29:56,568 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 75 transitions. [2025-02-06 10:29:56,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-06 10:29:56,568 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:29:56,568 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:29:56,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-06 10:29:56,769 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 10:29:56,769 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:29:56,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:29:56,770 INFO L85 PathProgramCache]: Analyzing trace with hash 482575736, now seen corresponding path program 1 times [2025-02-06 10:29:56,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:29:56,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764418789] [2025-02-06 10:29:56,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:56,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:29:56,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 10:29:56,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 10:29:56,793 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:56,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:56,985 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 10:29:56,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:29:56,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764418789] [2025-02-06 10:29:56,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764418789] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:29:56,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040882805] [2025-02-06 10:29:56,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:56,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:29:56,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:29:56,988 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 10:29:56,991 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 10:29:57,042 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-06 10:29:57,062 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-06 10:29:57,062 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:57,062 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:57,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-06 10:29:57,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:29:57,094 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2025-02-06 10:29:57,138 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-02-06 10:29:57,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-02-06 10:29:57,142 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:29:57,142 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-06 10:29:57,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040882805] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:29:57,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-06 10:29:57,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2025-02-06 10:29:57,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084062625] [2025-02-06 10:29:57,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:29:57,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 10:29:57,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:29:57,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 10:29:57,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2025-02-06 10:29:57,144 INFO L87 Difference]: Start difference. First operand 66 states and 75 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:29:57,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:29:57,198 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2025-02-06 10:29:57,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 10:29:57,198 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2025-02-06 10:29:57,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:29:57,200 INFO L225 Difference]: With dead ends: 66 [2025-02-06 10:29:57,200 INFO L226 Difference]: Without dead ends: 66 [2025-02-06 10:29:57,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2025-02-06 10:29:57,200 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 10 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:29:57,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 93 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 71 Unchecked, 0.0s Time] [2025-02-06 10:29:57,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2025-02-06 10:29:57,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2025-02-06 10:29:57,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 48 states have (on average 1.4166666666666667) internal successors, (68), 61 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:29:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2025-02-06 10:29:57,208 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 20 [2025-02-06 10:29:57,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:29:57,209 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2025-02-06 10:29:57,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:29:57,209 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2025-02-06 10:29:57,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-06 10:29:57,209 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:29:57,209 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:29:57,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-06 10:29:57,415 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 10:29:57,415 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:29:57,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:29:57,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1425907534, now seen corresponding path program 1 times [2025-02-06 10:29:57,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:29:57,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417475484] [2025-02-06 10:29:57,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:57,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:29:57,423 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-06 10:29:57,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-06 10:29:57,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:57,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:57,500 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 10:29:57,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:29:57,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417475484] [2025-02-06 10:29:57,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417475484] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:29:57,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:29:57,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:29:57,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256807346] [2025-02-06 10:29:57,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:29:57,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-02-06 10:29:57,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:29:57,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-02-06 10:29:57,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:29:57,502 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:29:57,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:29:57,543 INFO L93 Difference]: Finished difference Result 69 states and 78 transitions. [2025-02-06 10:29:57,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-06 10:29:57,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2025-02-06 10:29:57,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:29:57,544 INFO L225 Difference]: With dead ends: 69 [2025-02-06 10:29:57,544 INFO L226 Difference]: Without dead ends: 69 [2025-02-06 10:29:57,544 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:29:57,545 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 17 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-06 10:29:57,545 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 298 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-06 10:29:57,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-06 10:29:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2025-02-06 10:29:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 62 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:29:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2025-02-06 10:29:57,549 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 19 [2025-02-06 10:29:57,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:29:57,550 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2025-02-06 10:29:57,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:29:57,550 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2025-02-06 10:29:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-06 10:29:57,550 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:29:57,550 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:29:57,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 10:29:57,551 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:29:57,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:29:57,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1244300837, now seen corresponding path program 1 times [2025-02-06 10:29:57,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:29:57,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446833232] [2025-02-06 10:29:57,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:57,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:29:57,559 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 10:29:57,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 10:29:57,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:57,564 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:57,891 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 10:29:57,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:29:57,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446833232] [2025-02-06 10:29:57,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446833232] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:29:57,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895793174] [2025-02-06 10:29:57,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:57,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:29:57,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:29:57,894 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 10:29:57,897 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 10:29:57,962 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 22 statements into 1 equivalence classes. [2025-02-06 10:29:57,980 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 22 of 22 statements. [2025-02-06 10:29:57,980 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:57,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:57,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-06 10:29:57,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:29:57,998 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 10:29:58,007 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 10:29:58,152 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2025-02-06 10:29:58,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2025-02-06 10:29:58,172 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2025-02-06 10:29:58,172 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 17 [2025-02-06 10:29:58,391 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 10:29:58,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:29:58,780 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_188 (Array Int Int)) (|v_ULTIMATE.start_loop_~x#1.offset_11| Int)) (or (< |c_ULTIMATE.start_create_~sll~0#1.offset| |v_ULTIMATE.start_loop_~x#1.offset_11|) (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_188) |c_ULTIMATE.start_create_~sll~0#1.base|) |v_ULTIMATE.start_loop_~x#1.offset_11|) 0) (not (= v_ArrVal_188 (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_188 .cse0)))) (< |v_ULTIMATE.start_loop_~x#1.offset_11| 0))) (forall ((v_ArrVal_189 (Array Int Int))) (or (forall ((|v_ULTIMATE.start_loop_~x#1.offset_11| Int)) (or (< |c_ULTIMATE.start_create_~sll~0#1.offset| |v_ULTIMATE.start_loop_~x#1.offset_11|) (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_189) |c_ULTIMATE.start_create_~sll~0#1.base|) |v_ULTIMATE.start_loop_~x#1.offset_11|) 0) (< |v_ULTIMATE.start_loop_~x#1.offset_11| 0))) (not (= v_ArrVal_189 (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_189 .cse0)))))))) is different from false [2025-02-06 10:29:59,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2025-02-06 10:29:59,190 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 14 treesize of output 12 [2025-02-06 10:29:59,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2025-02-06 10:29:59,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:29:59,227 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 10:29:59,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895793174] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:29:59,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:29:59,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 26 [2025-02-06 10:29:59,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994566768] [2025-02-06 10:29:59,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:29:59,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-02-06 10:29:59,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:29:59,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-02-06 10:29:59,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=537, Unknown=1, NotChecked=46, Total=650 [2025-02-06 10:29:59,229 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 23 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:29:59,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:29:59,668 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2025-02-06 10:29:59,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:29:59,668 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 23 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 22 [2025-02-06 10:29:59,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:29:59,669 INFO L225 Difference]: With dead ends: 69 [2025-02-06 10:29:59,669 INFO L226 Difference]: Without dead ends: 69 [2025-02-06 10:29:59,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=725, Unknown=1, NotChecked=54, Total=870 [2025-02-06 10:29:59,670 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 5 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:29:59,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 708 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 330 Invalid, 0 Unknown, 33 Unchecked, 0.2s Time] [2025-02-06 10:29:59,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-06 10:29:59,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2025-02-06 10:29:59,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 64 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:29:59,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2025-02-06 10:29:59,674 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 22 [2025-02-06 10:29:59,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:29:59,674 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2025-02-06 10:29:59,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 23 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:29:59,674 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2025-02-06 10:29:59,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-06 10:29:59,675 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:29:59,675 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:29:59,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-06 10:29:59,875 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 10:29:59,876 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:29:59,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:29:59,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1545275762, now seen corresponding path program 1 times [2025-02-06 10:29:59,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:29:59,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222438125] [2025-02-06 10:29:59,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:29:59,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:29:59,884 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 10:29:59,889 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 10:29:59,889 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:29:59,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:29:59,972 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 10:29:59,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:29:59,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222438125] [2025-02-06 10:29:59,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222438125] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:29:59,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:29:59,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:29:59,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382358825] [2025-02-06 10:29:59,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:29:59,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:29:59,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:29:59,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:29:59,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:29:59,974 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:30:00,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:00,061 INFO L93 Difference]: Finished difference Result 68 states and 74 transitions. [2025-02-06 10:30:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:30:00,061 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2025-02-06 10:30:00,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:00,062 INFO L225 Difference]: With dead ends: 68 [2025-02-06 10:30:00,062 INFO L226 Difference]: Without dead ends: 68 [2025-02-06 10:30:00,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:30:00,063 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 5 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:00,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 186 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:30:00,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-06 10:30:00,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-02-06 10:30:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 63 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:30:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2025-02-06 10:30:00,066 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 24 [2025-02-06 10:30:00,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:00,066 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2025-02-06 10:30:00,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:30:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2025-02-06 10:30:00,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-06 10:30:00,067 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:00,067 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:00,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 10:30:00,068 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:00,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:00,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1545275763, now seen corresponding path program 1 times [2025-02-06 10:30:00,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:00,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829629880] [2025-02-06 10:30:00,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:00,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:00,076 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 10:30:00,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 10:30:00,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:00,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:30:00,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:00,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829629880] [2025-02-06 10:30:00,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829629880] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:30:00,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:30:00,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-06 10:30:00,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541127614] [2025-02-06 10:30:00,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:30:00,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:30:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:00,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:30:00,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:30:00,269 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:30:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:00,351 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2025-02-06 10:30:00,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:30:00,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2025-02-06 10:30:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:00,353 INFO L225 Difference]: With dead ends: 67 [2025-02-06 10:30:00,353 INFO L226 Difference]: Without dead ends: 67 [2025-02-06 10:30:00,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-02-06 10:30:00,353 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 4 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:00,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 204 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:30:00,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-06 10:30:00,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2025-02-06 10:30:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 62 states have internal predecessors, (66), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:30:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2025-02-06 10:30:00,358 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 24 [2025-02-06 10:30:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:00,359 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2025-02-06 10:30:00,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-02-06 10:30:00,359 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2025-02-06 10:30:00,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-06 10:30:00,361 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:00,361 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:00,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 10:30:00,361 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:00,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:00,362 INFO L85 PathProgramCache]: Analyzing trace with hash -81354868, now seen corresponding path program 1 times [2025-02-06 10:30:00,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:00,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896161333] [2025-02-06 10:30:00,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:00,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:00,371 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 10:30:00,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 10:30:00,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:00,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:30:00,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:00,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896161333] [2025-02-06 10:30:00,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896161333] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:30:00,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:30:00,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:30:00,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578679955] [2025-02-06 10:30:00,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:30:00,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:30:00,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:00,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:30:00,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:30:00,456 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:30:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:00,578 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2025-02-06 10:30:00,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:30:00,579 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2025-02-06 10:30:00,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:00,579 INFO L225 Difference]: With dead ends: 69 [2025-02-06 10:30:00,579 INFO L226 Difference]: Without dead ends: 69 [2025-02-06 10:30:00,580 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:30:00,580 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:00,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 184 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:30:00,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-06 10:30:00,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2025-02-06 10:30:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 64 states have internal predecessors, (70), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:30:00,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2025-02-06 10:30:00,583 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 23 [2025-02-06 10:30:00,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:00,583 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2025-02-06 10:30:00,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:30:00,584 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2025-02-06 10:30:00,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-02-06 10:30:00,584 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:00,584 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:00,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 10:30:00,585 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:00,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:00,585 INFO L85 PathProgramCache]: Analyzing trace with hash -81354867, now seen corresponding path program 1 times [2025-02-06 10:30:00,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:00,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493053176] [2025-02-06 10:30:00,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:00,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:00,592 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-02-06 10:30:00,595 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-02-06 10:30:00,596 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:00,596 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:30:00,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:00,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493053176] [2025-02-06 10:30:00,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493053176] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:30:00,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:30:00,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:30:00,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068261606] [2025-02-06 10:30:00,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:30:00,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:30:00,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:00,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:30:00,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:30:00,758 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:30:00,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:00,887 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2025-02-06 10:30:00,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:30:00,887 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2025-02-06 10:30:00,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:00,888 INFO L225 Difference]: With dead ends: 71 [2025-02-06 10:30:00,888 INFO L226 Difference]: Without dead ends: 71 [2025-02-06 10:30:00,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:30:00,889 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:00,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 209 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:30:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-06 10:30:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2025-02-06 10:30:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 66 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:30:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2025-02-06 10:30:00,892 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 23 [2025-02-06 10:30:00,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:00,892 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2025-02-06 10:30:00,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:30:00,893 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2025-02-06 10:30:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2025-02-06 10:30:00,893 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:00,893 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:00,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 10:30:00,893 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:00,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:00,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1772967077, now seen corresponding path program 1 times [2025-02-06 10:30:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:00,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619833899] [2025-02-06 10:30:00,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:00,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:00,901 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-02-06 10:30:00,904 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-02-06 10:30:00,904 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:00,904 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:30:00,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:00,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619833899] [2025-02-06 10:30:00,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619833899] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:30:00,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:30:00,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-06 10:30:00,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419300998] [2025-02-06 10:30:00,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:30:00,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:30:00,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:00,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:30:00,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:30:00,970 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:30:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:01,036 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2025-02-06 10:30:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:30:01,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2025-02-06 10:30:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:01,037 INFO L225 Difference]: With dead ends: 78 [2025-02-06 10:30:01,038 INFO L226 Difference]: Without dead ends: 78 [2025-02-06 10:30:01,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:30:01,039 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 21 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:01,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 291 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:30:01,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-06 10:30:01,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2025-02-06 10:30:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 67 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:30:01,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 77 transitions. [2025-02-06 10:30:01,044 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 77 transitions. Word has length 24 [2025-02-06 10:30:01,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:01,044 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 77 transitions. [2025-02-06 10:30:01,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:30:01,044 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 77 transitions. [2025-02-06 10:30:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2025-02-06 10:30:01,045 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:01,045 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:01,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 10:30:01,045 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:01,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:01,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1281331612, now seen corresponding path program 1 times [2025-02-06 10:30:01,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:01,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372854327] [2025-02-06 10:30:01,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:01,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:01,059 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-02-06 10:30:01,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-02-06 10:30:01,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:01,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:01,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:30:01,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:01,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372854327] [2025-02-06 10:30:01,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372854327] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 10:30:01,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 10:30:01,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-02-06 10:30:01,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517520122] [2025-02-06 10:30:01,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 10:30:01,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:30:01,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:01,154 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:30:01,154 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:30:01,154 INFO L87 Difference]: Start difference. First operand 72 states and 77 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:30:01,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:01,246 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2025-02-06 10:30:01,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-06 10:30:01,246 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2025-02-06 10:30:01,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:01,247 INFO L225 Difference]: With dead ends: 77 [2025-02-06 10:30:01,247 INFO L226 Difference]: Without dead ends: 77 [2025-02-06 10:30:01,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:30:01,247 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 17 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:01,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 259 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:30:01,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-02-06 10:30:01,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2025-02-06 10:30:01,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 61 states have (on average 1.278688524590164) internal successors, (78), 71 states have internal predecessors, (78), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:30:01,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2025-02-06 10:30:01,253 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 26 [2025-02-06 10:30:01,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:01,254 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2025-02-06 10:30:01,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:30:01,254 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2025-02-06 10:30:01,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-06 10:30:01,255 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:01,255 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:01,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 10:30:01,255 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:01,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:01,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1519254213, now seen corresponding path program 1 times [2025-02-06 10:30:01,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:01,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040230450] [2025-02-06 10:30:01,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:01,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:01,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 10:30:01,273 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 10:30:01,273 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:01,273 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:01,457 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 10:30:01,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040230450] [2025-02-06 10:30:01,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040230450] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:01,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686816241] [2025-02-06 10:30:01,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:01,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:01,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:30:01,461 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 10:30:01,463 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 10:30:01,530 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-06 10:30:01,553 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-06 10:30:01,553 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:01,553 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:01,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-02-06 10:30:01,557 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:30:01,579 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 10:30:01,584 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 10:30:01,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:30:01,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-06 10:30:01,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:30:01,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2025-02-06 10:30:01,859 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:01,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2025-02-06 10:30:01,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:01,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2025-02-06 10:30:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:30:01,956 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:30:02,102 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (+ 8 |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_338 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_338) |c_ULTIMATE.start_create_~sll~0#1.base|) 0) 0) (not (= v_ArrVal_338 (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_338 .cse0)))))) (forall ((v_ArrVal_339 (Array Int Int))) (or (not (= v_ArrVal_339 (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) .cse0 (select v_ArrVal_339 .cse0)))) (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base| v_ArrVal_339) |c_ULTIMATE.start_create_~sll~0#1.base|) 0) 0))))) is different from false [2025-02-06 10:30:02,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2025-02-06 10:30:02,541 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 102 treesize of output 98 [2025-02-06 10:30:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:30:02,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686816241] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:30:02,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:30:02,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 15] total 27 [2025-02-06 10:30:02,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442142527] [2025-02-06 10:30:02,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:30:02,559 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-06 10:30:02,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:02,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-06 10:30:02,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=593, Unknown=1, NotChecked=48, Total=702 [2025-02-06 10:30:02,560 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 25 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:30:03,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:03,215 INFO L93 Difference]: Finished difference Result 91 states and 106 transitions. [2025-02-06 10:30:03,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-02-06 10:30:03,215 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 25 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2025-02-06 10:30:03,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:03,216 INFO L225 Difference]: With dead ends: 91 [2025-02-06 10:30:03,216 INFO L226 Difference]: Without dead ends: 91 [2025-02-06 10:30:03,217 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=116, Invalid=1147, Unknown=1, NotChecked=68, Total=1332 [2025-02-06 10:30:03,217 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:03,218 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 469 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 609 Invalid, 0 Unknown, 61 Unchecked, 0.4s Time] [2025-02-06 10:30:03,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-02-06 10:30:03,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2025-02-06 10:30:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 83 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:30:03,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2025-02-06 10:30:03,226 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 29 [2025-02-06 10:30:03,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:03,226 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2025-02-06 10:30:03,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.074074074074074) internal successors, (56), 25 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2025-02-06 10:30:03,227 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2025-02-06 10:30:03,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-06 10:30:03,228 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:03,228 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:03,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-06 10:30:03,430 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,SelfDestructingSolverStorable16 [2025-02-06 10:30:03,430 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:03,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash -147758964, now seen corresponding path program 1 times [2025-02-06 10:30:03,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:03,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213476437] [2025-02-06 10:30:03,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:03,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:03,438 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 10:30:03,444 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 10:30:03,445 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:03,445 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:30:03,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:03,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213476437] [2025-02-06 10:30:03,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213476437] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:03,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433291539] [2025-02-06 10:30:03,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:03,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:03,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:30:03,611 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 10:30:03,613 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 10:30:03,678 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 30 statements into 1 equivalence classes. [2025-02-06 10:30:03,701 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 30 of 30 statements. [2025-02-06 10:30:03,701 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:03,701 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:03,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-06 10:30:03,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:30:03,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2025-02-06 10:30:03,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:30:03,776 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:30:03,830 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_create_#t~ret4#1.base_19| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_19|) 0)) (= (store |c_#valid| |v_ULTIMATE.start_create_#t~ret4#1.base_19| 0) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2025-02-06 10:30:03,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433291539] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:03,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:30:03,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 11 [2025-02-06 10:30:03,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525214937] [2025-02-06 10:30:03,832 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:30:03,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-06 10:30:03,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:03,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-06 10:30:03,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=111, Unknown=1, NotChecked=20, Total=156 [2025-02-06 10:30:03,833 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:30:03,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:03,982 INFO L93 Difference]: Finished difference Result 93 states and 106 transitions. [2025-02-06 10:30:03,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:30:03,983 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2025-02-06 10:30:03,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:03,984 INFO L225 Difference]: With dead ends: 93 [2025-02-06 10:30:03,984 INFO L226 Difference]: Without dead ends: 76 [2025-02-06 10:30:03,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=111, Unknown=1, NotChecked=20, Total=156 [2025-02-06 10:30:03,984 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 1 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:03,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 246 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:30:03,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-02-06 10:30:03,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2025-02-06 10:30:03,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 61 states have (on average 1.360655737704918) internal successors, (83), 71 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:30:03,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 89 transitions. [2025-02-06 10:30:03,988 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 89 transitions. Word has length 30 [2025-02-06 10:30:03,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:03,988 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 89 transitions. [2025-02-06 10:30:03,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-06 10:30:03,988 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 89 transitions. [2025-02-06 10:30:03,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 10:30:03,988 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:03,988 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:03,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-06 10:30:04,189 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,SelfDestructingSolverStorable17 [2025-02-06 10:30:04,189 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:04,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:04,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1961738538, now seen corresponding path program 1 times [2025-02-06 10:30:04,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:04,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904731264] [2025-02-06 10:30:04,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:04,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:04,201 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:30:04,206 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:30:04,206 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:04,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 10:30:04,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:04,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904731264] [2025-02-06 10:30:04,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904731264] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:04,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536229279] [2025-02-06 10:30:04,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:04,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:04,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:30:04,285 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 10:30:04,287 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 10:30:04,355 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:30:04,380 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:30:04,381 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:04,381 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:04,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-02-06 10:30:04,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:30:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 10:30:04,412 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:30:04,439 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 10:30:04,440 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 12 treesize of output 11 [2025-02-06 10:30:04,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-06 10:30:04,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536229279] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:30:04,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:30:04,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2025-02-06 10:30:04,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038944221] [2025-02-06 10:30:04,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:30:04,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-06 10:30:04,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:04,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-06 10:30:04,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:30:04,459 INFO L87 Difference]: Start difference. First operand 76 states and 89 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:30:04,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:04,530 INFO L93 Difference]: Finished difference Result 85 states and 101 transitions. [2025-02-06 10:30:04,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-06 10:30:04,530 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2025-02-06 10:30:04,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:04,531 INFO L225 Difference]: With dead ends: 85 [2025-02-06 10:30:04,531 INFO L226 Difference]: Without dead ends: 85 [2025-02-06 10:30:04,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-02-06 10:30:04,532 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:04,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 158 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:30:04,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2025-02-06 10:30:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2025-02-06 10:30:04,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 69 states have (on average 1.3478260869565217) internal successors, (93), 79 states have internal predecessors, (93), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-06 10:30:04,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 99 transitions. [2025-02-06 10:30:04,535 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 99 transitions. Word has length 34 [2025-02-06 10:30:04,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:04,536 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 99 transitions. [2025-02-06 10:30:04,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 7 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-02-06 10:30:04,536 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 99 transitions. [2025-02-06 10:30:04,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2025-02-06 10:30:04,536 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:04,536 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:04,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-06 10:30:04,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:04,741 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:04,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:04,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1961738539, now seen corresponding path program 1 times [2025-02-06 10:30:04,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:04,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432592712] [2025-02-06 10:30:04,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:04,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:04,751 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:30:04,756 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:30:04,756 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:04,756 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-06 10:30:04,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:04,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432592712] [2025-02-06 10:30:04,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432592712] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:04,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734924782] [2025-02-06 10:30:04,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:04,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:04,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:30:04,940 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 10:30:04,943 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 10:30:05,016 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-02-06 10:30:05,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-02-06 10:30:05,041 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:05,041 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:05,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-06 10:30:05,046 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:30:05,060 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 10:30:05,181 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2025-02-06 10:30:05,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:30:05,203 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 10:30:05,211 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:30:05,212 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 10:30:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2025-02-06 10:30:05,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:30:05,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734924782] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:05,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:30:05,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2025-02-06 10:30:05,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553189965] [2025-02-06 10:30:05,467 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:30:05,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-02-06 10:30:05,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:05,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-02-06 10:30:05,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=442, Unknown=1, NotChecked=42, Total=552 [2025-02-06 10:30:05,470 INFO L87 Difference]: Start difference. First operand 84 states and 99 transitions. Second operand has 20 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 10:30:05,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:05,765 INFO L93 Difference]: Finished difference Result 105 states and 123 transitions. [2025-02-06 10:30:05,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-06 10:30:05,765 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2025-02-06 10:30:05,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:05,766 INFO L225 Difference]: With dead ends: 105 [2025-02-06 10:30:05,766 INFO L226 Difference]: Without dead ends: 105 [2025-02-06 10:30:05,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=611, Unknown=1, NotChecked=50, Total=756 [2025-02-06 10:30:05,767 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 27 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:05,767 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 486 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 388 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2025-02-06 10:30:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2025-02-06 10:30:05,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 100. [2025-02-06 10:30:05,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 84 states have (on average 1.3452380952380953) internal successors, (113), 94 states have internal predecessors, (113), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:30:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2025-02-06 10:30:05,771 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 34 [2025-02-06 10:30:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:05,772 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2025-02-06 10:30:05,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 17 states have internal predecessors, (58), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 10:30:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2025-02-06 10:30:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-06 10:30:05,772 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:05,772 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:05,781 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 10:30:05,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:05,973 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:05,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1030022464, now seen corresponding path program 1 times [2025-02-06 10:30:05,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:05,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40189398] [2025-02-06 10:30:05,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:05,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:05,983 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 10:30:05,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 10:30:05,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:05,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:30:06,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40189398] [2025-02-06 10:30:06,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40189398] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:06,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700445529] [2025-02-06 10:30:06,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:06,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:06,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:30:06,498 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 10:30:06,501 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 10:30:06,576 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 10:30:06,606 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 10:30:06,606 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:06,606 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:06,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-02-06 10:30:06,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:30:06,636 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 10:30:06,702 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:30:06,702 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 10:30:06,734 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 10:30:06,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 10:30:06,829 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-06 10:30:06,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 52 [2025-02-06 10:30:06,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2025-02-06 10:30:06,888 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 34 treesize of output 18 [2025-02-06 10:30:06,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-02-06 10:30:06,992 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|))) is different from true [2025-02-06 10:30:07,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:30:07,012 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 10:30:07,018 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:30:07,018 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 10:30:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2025-02-06 10:30:07,045 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:30:07,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700445529] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:07,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:30:07,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 28 [2025-02-06 10:30:07,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122822815] [2025-02-06 10:30:07,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:30:07,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-06 10:30:07,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:07,164 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-06 10:30:07,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=794, Unknown=1, NotChecked=56, Total=930 [2025-02-06 10:30:07,164 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand has 29 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 22 states have internal predecessors, (54), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-06 10:30:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:07,777 INFO L93 Difference]: Finished difference Result 97 states and 115 transitions. [2025-02-06 10:30:07,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-06 10:30:07,778 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 22 states have internal predecessors, (54), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 36 [2025-02-06 10:30:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:07,778 INFO L225 Difference]: With dead ends: 97 [2025-02-06 10:30:07,778 INFO L226 Difference]: Without dead ends: 97 [2025-02-06 10:30:07,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=180, Invalid=1463, Unknown=1, NotChecked=78, Total=1722 [2025-02-06 10:30:07,780 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 23 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:07,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 708 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 544 Invalid, 0 Unknown, 55 Unchecked, 0.3s Time] [2025-02-06 10:30:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-02-06 10:30:07,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2025-02-06 10:30:07,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 91 states have internal predecessors, (107), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:30:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 115 transitions. [2025-02-06 10:30:07,783 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 115 transitions. Word has length 36 [2025-02-06 10:30:07,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:07,784 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 115 transitions. [2025-02-06 10:30:07,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.9285714285714286) internal successors, (54), 22 states have internal predecessors, (54), 4 states have call successors, (4), 4 states have call predecessors, (4), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2025-02-06 10:30:07,784 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 115 transitions. [2025-02-06 10:30:07,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-02-06 10:30:07,784 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:07,784 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:07,793 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 10:30:07,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:07,988 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:07,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:07,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1030022465, now seen corresponding path program 1 times [2025-02-06 10:30:07,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:07,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881911690] [2025-02-06 10:30:07,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:07,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:07,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 10:30:08,010 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 10:30:08,011 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:08,011 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-06 10:30:08,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881911690] [2025-02-06 10:30:08,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881911690] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:08,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264985505] [2025-02-06 10:30:08,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:08,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:08,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:30:08,382 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 10:30:08,384 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 10:30:08,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-02-06 10:30:08,495 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-02-06 10:30:08,496 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:08,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:08,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-06 10:30:08,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:30:08,540 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:30:08,541 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 10:30:08,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 10:30:08,608 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-06 10:30:08,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2025-02-06 10:30:08,621 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 25 treesize of output 13 [2025-02-06 10:30:08,634 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base Int)) (and (= (select |c_old(#valid)| alloc_and_zero_~pi~0.base) 0) (= |c_#valid| (store |c_old(#valid)| alloc_and_zero_~pi~0.base (select |c_#valid| alloc_and_zero_~pi~0.base))))) is different from true [2025-02-06 10:30:08,661 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-02-06 10:30:08,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-02-06 10:30:08,663 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 4 not checked. [2025-02-06 10:30:08,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:30:08,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264985505] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:08,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:30:08,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11] total 22 [2025-02-06 10:30:08,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645408295] [2025-02-06 10:30:08,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:30:08,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 10:30:08,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:08,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 10:30:08,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=449, Unknown=1, NotChecked=42, Total=552 [2025-02-06 10:30:08,715 INFO L87 Difference]: Start difference. First operand 97 states and 115 transitions. Second operand has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 19 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-06 10:30:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:08,924 INFO L93 Difference]: Finished difference Result 96 states and 113 transitions. [2025-02-06 10:30:08,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-06 10:30:08,925 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 19 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2025-02-06 10:30:08,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:08,925 INFO L225 Difference]: With dead ends: 96 [2025-02-06 10:30:08,925 INFO L226 Difference]: Without dead ends: 96 [2025-02-06 10:30:08,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=662, Unknown=1, NotChecked=52, Total=812 [2025-02-06 10:30:08,927 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:08,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 407 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 250 Invalid, 0 Unknown, 43 Unchecked, 0.1s Time] [2025-02-06 10:30:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-02-06 10:30:08,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-02-06 10:30:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.25) internal successors, (105), 90 states have internal predecessors, (105), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:30:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2025-02-06 10:30:08,932 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 36 [2025-02-06 10:30:08,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:08,933 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2025-02-06 10:30:08,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.1363636363636362) internal successors, (47), 19 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 6 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2025-02-06 10:30:08,933 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2025-02-06 10:30:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-06 10:30:08,933 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:08,933 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:08,944 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-06 10:30:09,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:09,134 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:09,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:09,135 INFO L85 PathProgramCache]: Analyzing trace with hash -663624276, now seen corresponding path program 1 times [2025-02-06 10:30:09,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:09,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324520816] [2025-02-06 10:30:09,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:09,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:09,145 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 10:30:09,154 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 10:30:09,155 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:09,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:30:09,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:09,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324520816] [2025-02-06 10:30:09,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324520816] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:09,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252507924] [2025-02-06 10:30:09,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:09,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:09,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:30:09,600 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 10:30:09,602 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 10:30:09,686 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 10:30:09,715 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 10:30:09,715 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:09,715 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:09,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 43 conjuncts are in the unsatisfiable core [2025-02-06 10:30:09,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:30:09,840 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2025-02-06 10:30:09,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2025-02-06 10:30:09,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 10:30:09,984 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-06 10:30:09,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2025-02-06 10:30:10,134 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 25 treesize of output 13 [2025-02-06 10:30:10,223 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:30:10,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:30:10,293 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_772 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_772) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|)) 1)) is different from false [2025-02-06 10:30:10,300 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:10,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2025-02-06 10:30:10,307 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:10,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2025-02-06 10:30:10,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2025-02-06 10:30:14,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252507924] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:14,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:30:14,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14] total 29 [2025-02-06 10:30:14,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84676191] [2025-02-06 10:30:14,519 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:30:14,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2025-02-06 10:30:14,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:14,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2025-02-06 10:30:14,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=936, Unknown=16, NotChecked=62, Total=1122 [2025-02-06 10:30:14,521 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:30:14,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:14,763 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2025-02-06 10:30:14,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:30:14,763 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2025-02-06 10:30:14,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:14,764 INFO L225 Difference]: With dead ends: 100 [2025-02-06 10:30:14,764 INFO L226 Difference]: Without dead ends: 100 [2025-02-06 10:30:14,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=121, Invalid=989, Unknown=16, NotChecked=64, Total=1190 [2025-02-06 10:30:14,764 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 12 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:14,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 370 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:30:14,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-02-06 10:30:14,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2025-02-06 10:30:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 94 states have internal predecessors, (111), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:30:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 119 transitions. [2025-02-06 10:30:14,767 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 119 transitions. Word has length 38 [2025-02-06 10:30:14,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:14,767 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 119 transitions. [2025-02-06 10:30:14,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:30:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 119 transitions. [2025-02-06 10:30:14,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-06 10:30:14,768 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:14,768 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, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:14,776 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-06 10:30:14,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2025-02-06 10:30:14,968 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:14,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:14,969 INFO L85 PathProgramCache]: Analyzing trace with hash -663624275, now seen corresponding path program 1 times [2025-02-06 10:30:14,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:14,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501858025] [2025-02-06 10:30:14,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:14,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:14,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 10:30:14,986 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 10:30:14,986 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:14,986 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:30:15,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501858025] [2025-02-06 10:30:15,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501858025] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:15,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132313502] [2025-02-06 10:30:15,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:15,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:15,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:30:15,495 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 10:30:15,498 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 10:30:15,583 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-06 10:30:15,612 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-06 10:30:15,612 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:15,612 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:15,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 55 conjuncts are in the unsatisfiable core [2025-02-06 10:30:15,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:30:15,675 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 10:30:15,751 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:30:15,752 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 10:30:15,796 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 10:30:15,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 10:30:15,886 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-06 10:30:15,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2025-02-06 10:30:15,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2025-02-06 10:30:16,002 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 25 treesize of output 13 [2025-02-06 10:30:16,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2025-02-06 10:30:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:30:16,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:30:16,315 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((v_ArrVal_845 (Array Int Int)) (v_ArrVal_846 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_846) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| .cse0 v_ArrVal_845) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|)))) (forall ((v_ArrVal_846 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#0.offset| .cse0 v_ArrVal_846) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|))))) is different from false [2025-02-06 10:30:16,328 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:16,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 38 [2025-02-06 10:30:16,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:16,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2025-02-06 10:30:16,343 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:16,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 55 [2025-02-06 10:30:16,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:16,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 81 [2025-02-06 10:30:16,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-02-06 10:30:16,380 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 9 treesize of output 7 [2025-02-06 10:30:16,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:16,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 19 [2025-02-06 10:30:16,388 INFO L173 IndexEqualityManager]: detected equality via solver [2025-02-06 10:30:16,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2025-02-06 10:30:16,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132313502] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:16,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:30:16,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 28 [2025-02-06 10:30:16,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902850277] [2025-02-06 10:30:16,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:30:16,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-06 10:30:16,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:16,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-06 10:30:16,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1203, Unknown=18, NotChecked=70, Total=1406 [2025-02-06 10:30:16,524 INFO L87 Difference]: Start difference. First operand 100 states and 119 transitions. Second operand has 29 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 25 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:30:16,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:16,910 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2025-02-06 10:30:16,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-06 10:30:16,910 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 25 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2025-02-06 10:30:16,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:16,911 INFO L225 Difference]: With dead ends: 100 [2025-02-06 10:30:16,911 INFO L226 Difference]: Without dead ends: 100 [2025-02-06 10:30:16,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=1708, Unknown=19, NotChecked=84, Total=1980 [2025-02-06 10:30:16,912 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:16,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 538 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:30:16,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2025-02-06 10:30:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2025-02-06 10:30:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.25) internal successors, (110), 94 states have internal predecessors, (110), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:30:16,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2025-02-06 10:30:16,916 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 38 [2025-02-06 10:30:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:16,916 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2025-02-06 10:30:16,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.2142857142857144) internal successors, (62), 25 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2025-02-06 10:30:16,916 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2025-02-06 10:30:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-06 10:30:16,916 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:16,917 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:16,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2025-02-06 10:30:17,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2025-02-06 10:30:17,117 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:17,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:17,118 INFO L85 PathProgramCache]: Analyzing trace with hash 902508773, now seen corresponding path program 1 times [2025-02-06 10:30:17,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:17,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450687434] [2025-02-06 10:30:17,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:17,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:17,126 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 10:30:17,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 10:30:17,131 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:17,131 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-06 10:30:17,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:17,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450687434] [2025-02-06 10:30:17,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450687434] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:17,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958284784] [2025-02-06 10:30:17,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:17,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:17,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:30:17,212 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 10:30:17,215 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 10:30:17,305 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 10:30:17,332 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 10:30:17,332 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:17,332 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:17,334 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 23 conjuncts are in the unsatisfiable core [2025-02-06 10:30:17,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:30:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 10:30:17,353 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:30:17,362 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-02-06 10:30:17,362 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 12 treesize of output 11 [2025-02-06 10:30:17,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-06 10:30:17,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958284784] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-06 10:30:17,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-06 10:30:17,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 8 [2025-02-06 10:30:17,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042274354] [2025-02-06 10:30:17,379 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-06 10:30:17,379 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-06 10:30:17,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:17,380 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-06 10:30:17,380 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-02-06 10:30:17,380 INFO L87 Difference]: Start difference. First operand 100 states and 118 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:30:17,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:17,509 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2025-02-06 10:30:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-06 10:30:17,509 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2025-02-06 10:30:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:17,510 INFO L225 Difference]: With dead ends: 102 [2025-02-06 10:30:17,510 INFO L226 Difference]: Without dead ends: 102 [2025-02-06 10:30:17,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-06 10:30:17,511 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 11 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:17,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 182 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-06 10:30:17,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-02-06 10:30:17,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2025-02-06 10:30:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 94 states have internal predecessors, (108), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:30:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2025-02-06 10:30:17,514 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 39 [2025-02-06 10:30:17,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:17,515 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2025-02-06 10:30:17,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-02-06 10:30:17,515 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2025-02-06 10:30:17,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-06 10:30:17,515 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:17,515 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:17,525 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 10:30:17,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:17,716 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:17,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:17,716 INFO L85 PathProgramCache]: Analyzing trace with hash 902508774, now seen corresponding path program 1 times [2025-02-06 10:30:17,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:17,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608662232] [2025-02-06 10:30:17,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:17,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:17,723 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 10:30:17,728 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 10:30:17,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:17,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:17,948 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-02-06 10:30:17,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:17,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608662232] [2025-02-06 10:30:17,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608662232] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:17,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914736891] [2025-02-06 10:30:17,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 10:30:17,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:17,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:30:17,952 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 10:30:17,954 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 10:30:18,053 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-06 10:30:18,081 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-06 10:30:18,081 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 10:30:18,081 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:18,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 46 conjuncts are in the unsatisfiable core [2025-02-06 10:30:18,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:30:18,191 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:30:18,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2025-02-06 10:30:18,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-06 10:30:18,287 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2025-02-06 10:30:18,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2025-02-06 10:30:18,364 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 24 treesize of output 12 [2025-02-06 10:30:18,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:30:18,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:30:18,524 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_987 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$#0.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|) v_ArrVal_987) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|) 0))) is different from false [2025-02-06 10:30:18,534 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:18,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2025-02-06 10:30:18,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:18,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2025-02-06 10:30:18,544 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 20 treesize of output 18 [2025-02-06 10:30:18,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914736891] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:18,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-06 10:30:18,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 15] total 23 [2025-02-06 10:30:18,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825312554] [2025-02-06 10:30:18,650 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-06 10:30:18,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-06 10:30:18,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 10:30:18,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-06 10:30:18,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=790, Unknown=11, NotChecked=56, Total=930 [2025-02-06 10:30:18,652 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 20 states have internal predecessors, (63), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 10:30:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-06 10:30:19,051 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2025-02-06 10:30:19,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-06 10:30:19,051 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 20 states have internal predecessors, (63), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2025-02-06 10:30:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-06 10:30:19,052 INFO L225 Difference]: With dead ends: 102 [2025-02-06 10:30:19,052 INFO L226 Difference]: Without dead ends: 102 [2025-02-06 10:30:19,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=1565, Unknown=11, NotChecked=80, Total=1806 [2025-02-06 10:30:19,053 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 25 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-06 10:30:19,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 543 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-06 10:30:19,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2025-02-06 10:30:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2025-02-06 10:30:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 94 states have internal predecessors, (103), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-06 10:30:19,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 111 transitions. [2025-02-06 10:30:19,055 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 111 transitions. Word has length 39 [2025-02-06 10:30:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-06 10:30:19,056 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 111 transitions. [2025-02-06 10:30:19,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.739130434782609) internal successors, (63), 20 states have internal predecessors, (63), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2025-02-06 10:30:19,056 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 111 transitions. [2025-02-06 10:30:19,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-06 10:30:19,056 INFO L210 NwaCegarLoop]: Found error trace [2025-02-06 10:30:19,056 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 10:30:19,064 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 10:30:19,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,14 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:19,257 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (and 17 more)] === [2025-02-06 10:30:19,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 10:30:19,257 INFO L85 PathProgramCache]: Analyzing trace with hash -596903634, now seen corresponding path program 2 times [2025-02-06 10:30:19,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 10:30:19,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932123118] [2025-02-06 10:30:19,258 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:30:19,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 10:30:19,266 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 10:30:19,276 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 10:30:19,276 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:30:19,276 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:30:20,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 10:30:20,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932123118] [2025-02-06 10:30:20,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932123118] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-06 10:30:20,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089400634] [2025-02-06 10:30:20,077 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-06 10:30:20,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-06 10:30:20,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 10:30:20,079 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 10:30:20,080 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 10:30:20,172 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-02-06 10:30:20,206 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-02-06 10:30:20,206 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-06 10:30:20,206 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 10:30:20,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 80 conjuncts are in the unsatisfiable core [2025-02-06 10:30:20,212 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-06 10:30:20,215 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 10:30:20,326 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 10:30:20,331 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 10:30:20,361 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2025-02-06 10:30:20,361 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 10:30:20,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2025-02-06 10:30:20,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2025-02-06 10:30:20,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:30:20,523 INFO L349 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2025-02-06 10:30:20,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 66 [2025-02-06 10:30:20,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-02-06 10:30:20,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 25 [2025-02-06 10:30:20,837 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 10:30:20,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-06 10:30:21,406 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base|)) (.cse0 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base|)) (.cse1 (+ |c_ULTIMATE.start_create_#t~mem8#1.offset| 8))) (and (forall ((v_ArrVal_1062 (Array Int Int))) (or (forall ((v_ArrVal_1063 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_1063 .cse1)) v_ArrVal_1063)) (forall ((|v_ULTIMATE.start_loop_~x#1.offset_36| Int)) (or (< (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1062) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|) |v_ULTIMATE.start_loop_~x#1.offset_36|) (= (select (let ((.cse2 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1063))) (select .cse2 (select (select .cse2 |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|))) |v_ULTIMATE.start_loop_~x#1.offset_36|) 0) (< |v_ULTIMATE.start_loop_~x#1.offset_36| 0))))) (not (= (store .cse3 .cse1 (select v_ArrVal_1062 .cse1)) v_ArrVal_1062)))) (forall ((v_ArrVal_1062 (Array Int Int))) (or (not (= (store .cse3 .cse1 (select v_ArrVal_1062 .cse1)) v_ArrVal_1062)) (forall ((v_ArrVal_1063 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_1063 .cse1)) v_ArrVal_1063)) (forall ((|v_ULTIMATE.start_loop_~x#1.offset_36| Int)) (let ((.cse4 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1062))) (or (< (select (select .cse4 |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|) |v_ULTIMATE.start_loop_~x#1.offset_36|) (= (select (select .cse4 (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_#t~mem8#1.base| v_ArrVal_1063) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|)) |v_ULTIMATE.start_loop_~x#1.offset_36|) 0) (< |v_ULTIMATE.start_loop_~x#1.offset_36| 0)))))))))) is different from false [2025-02-06 10:30:21,509 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (let ((.cse0 (select |c_#memory_$Pointer$#0.base| .cse3)) (.cse4 (select |c_#memory_$Pointer$#0.offset| .cse3)) (.cse5 (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_29| Int)) (or (forall ((v_ArrVal_1062 (Array Int Int))) (let ((.cse1 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_29|))) (or (forall ((v_ArrVal_1063 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_1063 .cse1)) v_ArrVal_1063)) (forall ((|v_ULTIMATE.start_loop_~x#1.offset_36| Int)) (or (= (select (let ((.cse2 (store |c_#memory_$Pointer$#0.base| .cse3 v_ArrVal_1063))) (select .cse2 (select (select .cse2 |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|))) |v_ULTIMATE.start_loop_~x#1.offset_36|) 0) (< |v_ULTIMATE.start_loop_~x#1.offset_36| 0) (< (select (select (store |c_#memory_$Pointer$#0.offset| .cse3 v_ArrVal_1062) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|) |v_ULTIMATE.start_loop_~x#1.offset_36|))))) (not (= (store .cse4 .cse1 (select v_ArrVal_1062 .cse1)) v_ArrVal_1062))))) (< |v_ULTIMATE.start_create_#t~mem8#1.offset_29| .cse5))) (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_29| Int)) (or (forall ((v_ArrVal_1062 (Array Int Int))) (let ((.cse6 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_29|))) (or (forall ((v_ArrVal_1063 (Array Int Int))) (or (not (= (store .cse0 .cse6 (select v_ArrVal_1063 .cse6)) v_ArrVal_1063)) (forall ((|v_ULTIMATE.start_loop_~x#1.offset_36| Int)) (let ((.cse7 (store |c_#memory_$Pointer$#0.offset| .cse3 v_ArrVal_1062))) (or (< |v_ULTIMATE.start_loop_~x#1.offset_36| 0) (< (select (select .cse7 |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|) |v_ULTIMATE.start_loop_~x#1.offset_36|) (= (select (select .cse7 (select (select (store |c_#memory_$Pointer$#0.base| .cse3 v_ArrVal_1063) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|)) |v_ULTIMATE.start_loop_~x#1.offset_36|) 0)))))) (not (= (store .cse4 .cse6 (select v_ArrVal_1062 .cse6)) v_ArrVal_1062))))) (< |v_ULTIMATE.start_create_#t~mem8#1.offset_29| .cse5)))))) is different from false [2025-02-06 10:30:21,620 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |c_ULTIMATE.start_create_#t~ret7#1.offset|))) (.cse4 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~now~0#1.base|) |c_ULTIMATE.start_create_~now~0#1.offset| |c_ULTIMATE.start_create_#t~ret7#1.base|)))) (let ((.cse2 (select .cse4 |c_ULTIMATE.start_create_#t~ret7#1.base|)) (.cse0 (select .cse5 |c_ULTIMATE.start_create_#t~ret7#1.base|))) (and (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_29| Int)) (or (forall ((v_ArrVal_1062 (Array Int Int))) (let ((.cse1 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_29|))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_1062 .cse1)) v_ArrVal_1062)) (forall ((v_ArrVal_1063 (Array Int Int))) (or (not (= (store .cse2 .cse1 (select v_ArrVal_1063 .cse1)) v_ArrVal_1063)) (forall ((|v_ULTIMATE.start_loop_~x#1.offset_36| Int)) (let ((.cse3 (store .cse5 |c_ULTIMATE.start_create_#t~ret7#1.base| v_ArrVal_1062))) (or (< |v_ULTIMATE.start_loop_~x#1.offset_36| 0) (= (select (select .cse3 (select (select (store .cse4 |c_ULTIMATE.start_create_#t~ret7#1.base| v_ArrVal_1063) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|)) |v_ULTIMATE.start_loop_~x#1.offset_36|) 0) (< (select (select .cse3 |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|) |v_ULTIMATE.start_loop_~x#1.offset_36|))))))))) (< |v_ULTIMATE.start_create_#t~mem8#1.offset_29| |c_ULTIMATE.start_create_#t~ret7#1.offset|))) (forall ((|v_ULTIMATE.start_create_#t~mem8#1.offset_29| Int)) (or (< |v_ULTIMATE.start_create_#t~mem8#1.offset_29| |c_ULTIMATE.start_create_#t~ret7#1.offset|) (forall ((v_ArrVal_1062 (Array Int Int))) (let ((.cse6 (+ 8 |v_ULTIMATE.start_create_#t~mem8#1.offset_29|))) (or (forall ((v_ArrVal_1063 (Array Int Int))) (or (not (= (store .cse2 .cse6 (select v_ArrVal_1063 .cse6)) v_ArrVal_1063)) (forall ((|v_ULTIMATE.start_loop_~x#1.offset_36| Int)) (or (= (select (let ((.cse7 (store .cse4 |c_ULTIMATE.start_create_#t~ret7#1.base| v_ArrVal_1063))) (select .cse7 (select (select .cse7 |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|))) |v_ULTIMATE.start_loop_~x#1.offset_36|) 0) (< |v_ULTIMATE.start_loop_~x#1.offset_36| 0) (< (select (select (store .cse5 |c_ULTIMATE.start_create_#t~ret7#1.base| v_ArrVal_1062) |c_ULTIMATE.start_create_~sll~0#1.base|) |c_ULTIMATE.start_create_~sll~0#1.offset|) |v_ULTIMATE.start_loop_~x#1.offset_36|))))) (not (= (store .cse0 .cse6 (select v_ArrVal_1062 .cse6)) v_ArrVal_1062)))))))))) is different from false [2025-02-06 10:30:22,340 INFO L349 Elim1Store]: treesize reduction 245, result has 54.0 percent of original size [2025-02-06 10:30:22,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 895 treesize of output 1033 [2025-02-06 10:30:22,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:22,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 1909 treesize of output 1945 [2025-02-06 10:30:23,314 INFO L349 Elim1Store]: treesize reduction 326, result has 52.1 percent of original size [2025-02-06 10:30:23,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 1537 treesize of output 1686 [2025-02-06 10:30:23,833 INFO L349 Elim1Store]: treesize reduction 264, result has 42.6 percent of original size [2025-02-06 10:30:23,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 1212 treesize of output 1356 [2025-02-06 10:30:24,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:30:24,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1330 treesize of output 1457 [2025-02-06 10:30:25,416 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 6 treesize of output 4 [2025-02-06 10:31:11,217 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 6 treesize of output 4 [2025-02-06 10:31:11,386 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:31:11,386 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 27 treesize of output 31 [2025-02-06 10:31:11,540 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 6 treesize of output 4 [2025-02-06 10:31:11,670 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 6 treesize of output 4 [2025-02-06 10:31:11,819 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 6 treesize of output 4 [2025-02-06 10:31:14,797 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 6 treesize of output 4 [2025-02-06 10:31:14,920 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 6 treesize of output 4 [2025-02-06 10:31:14,982 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-02-06 10:31:14,982 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 68 treesize of output 70 [2025-02-06 10:31:15,281 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 6 treesize of output 4 [2025-02-06 10:31:15,669 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 6 treesize of output 4