./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 48c9605d 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/termination-recursive-malloc/selectionSort_recursive.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 ff7f98b41a2da3578e790df894a867e943a0857e97661a8032b524a76ca3b438 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-08 06:18:57,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-08 06:18:57,920 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2025-02-08 06:18:57,924 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-08 06:18:57,924 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-08 06:18:57,937 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-08 06:18:57,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-08 06:18:57,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-08 06:18:57,938 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-08 06:18:57,938 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-08 06:18:57,938 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-08 06:18:57,938 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-08 06:18:57,939 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-08 06:18:57,939 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-08 06:18:57,939 INFO L153 SettingsManager]: * Use SBE=true [2025-02-08 06:18:57,939 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-08 06:18:57,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-08 06:18:57,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-08 06:18:57,939 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-08 06:18:57,939 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-08 06:18:57,939 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-08 06:18:57,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-08 06:18:57,939 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-08 06:18:57,940 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-08 06:18:57,940 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-08 06:18:57,940 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-08 06:18:57,940 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-08 06:18:57,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-08 06:18:57,940 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-08 06:18:57,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-08 06:18:57,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:18:57,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-08 06:18:57,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-08 06:18:57,940 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-08 06:18:57,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-08 06:18:57,941 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-08 06:18:57,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-08 06:18:57,941 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-08 06:18:57,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-08 06:18:57,941 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 -> ff7f98b41a2da3578e790df894a867e943a0857e97661a8032b524a76ca3b438 [2025-02-08 06:18:58,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-08 06:18:58,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-08 06:18:58,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-08 06:18:58,154 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-08 06:18:58,154 INFO L274 PluginConnector]: CDTParser initialized [2025-02-08 06:18:58,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i [2025-02-08 06:18:59,237 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a355a8f82/5241a745b4d245ab9b5e0f3219fc9b5f/FLAG195eb80ed [2025-02-08 06:18:59,476 INFO L384 CDTParser]: Found 1 translation units. [2025-02-08 06:18:59,477 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/termination-recursive-malloc/selectionSort_recursive.i [2025-02-08 06:18:59,495 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a355a8f82/5241a745b4d245ab9b5e0f3219fc9b5f/FLAG195eb80ed [2025-02-08 06:18:59,807 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/a355a8f82/5241a745b4d245ab9b5e0f3219fc9b5f [2025-02-08 06:18:59,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-08 06:18:59,811 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-08 06:18:59,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-08 06:18:59,812 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-08 06:18:59,815 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-08 06:18:59,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:18:59,818 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ec176d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59, skipping insertion in model container [2025-02-08 06:18:59,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:18:59,830 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-08 06:18:59,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:18:59,949 INFO L200 MainTranslator]: Completed pre-run [2025-02-08 06:18:59,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-08 06:18:59,970 INFO L204 MainTranslator]: Completed translation [2025-02-08 06:18:59,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59 WrapperNode [2025-02-08 06:18:59,972 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-08 06:18:59,972 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-08 06:18:59,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-08 06:18:59,973 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-08 06:18:59,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:18:59,985 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:18:59,998 INFO L138 Inliner]: procedures = 11, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2025-02-08 06:18:59,998 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-08 06:18:59,999 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-08 06:18:59,999 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-08 06:18:59,999 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-08 06:19:00,003 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:19:00,004 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:19:00,006 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:19:00,017 INFO L175 MemorySlicer]: Split 7 memory accesses to 1 slices as follows [7]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 3 writes are split as follows [3]. [2025-02-08 06:19:00,018 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:19:00,019 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:19:00,022 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:19:00,022 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:19:00,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:19:00,026 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:19:00,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-08 06:19:00,029 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-08 06:19:00,030 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-08 06:19:00,030 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-08 06:19:00,030 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (1/1) ... [2025-02-08 06:19:00,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-08 06:19:00,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:00,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-08 06:19:00,063 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 [2025-02-08 06:19:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-08 06:19:00,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-02-08 06:19:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-08 06:19:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-08 06:19:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-08 06:19:00,083 INFO L130 BoogieDeclarations]: Found specification of procedure selectionSort [2025-02-08 06:19:00,083 INFO L138 BoogieDeclarations]: Found implementation of procedure selectionSort [2025-02-08 06:19:00,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-08 06:19:00,132 INFO L257 CfgBuilder]: Building ICFG [2025-02-08 06:19:00,134 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-08 06:19:00,283 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2025-02-08 06:19:00,283 INFO L308 CfgBuilder]: Performing block encoding [2025-02-08 06:19:00,289 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-08 06:19:00,290 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-08 06:19:00,290 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:19:00 BoogieIcfgContainer [2025-02-08 06:19:00,290 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-08 06:19:00,292 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-08 06:19:00,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-08 06:19:00,295 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-08 06:19:00,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.02 06:18:59" (1/3) ... [2025-02-08 06:19:00,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743daafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:19:00, skipping insertion in model container [2025-02-08 06:19:00,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.02 06:18:59" (2/3) ... [2025-02-08 06:19:00,296 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743daafa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.02 06:19:00, skipping insertion in model container [2025-02-08 06:19:00,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:19:00" (3/3) ... [2025-02-08 06:19:00,297 INFO L128 eAbstractionObserver]: Analyzing ICFG selectionSort_recursive.i [2025-02-08 06:19:00,307 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-08 06:19:00,308 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG selectionSort_recursive.i that has 2 procedures, 47 locations, 1 initial locations, 2 loop locations, and 18 error locations. [2025-02-08 06:19:00,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-08 06:19:00,342 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;@39a5292c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-08 06:19:00,342 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2025-02-08 06:19:00,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 44 states have internal predecessors, (47), 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) [2025-02-08 06:19:00,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 06:19:00,351 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:00,351 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 06:19:00,353 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:00,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:00,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1538046, now seen corresponding path program 1 times [2025-02-08 06:19:00,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:00,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297705635] [2025-02-08 06:19:00,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:00,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:00,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 06:19:00,430 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 06:19:00,430 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:00,430 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:00,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:00,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297705635] [2025-02-08 06:19:00,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297705635] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:19:00,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:19:00,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:19:00,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180814677] [2025-02-08 06:19:00,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:19:00,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:19:00,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:00,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:19:00,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:19:00,514 INFO L87 Difference]: Start difference. First operand has 47 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 44 states have internal predecessors, (47), 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:00,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:00,556 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2025-02-08 06:19:00,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:19:00,557 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-08 06:19:00,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:00,561 INFO L225 Difference]: With dead ends: 45 [2025-02-08 06:19:00,561 INFO L226 Difference]: Without dead ends: 42 [2025-02-08 06:19:00,562 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 [2025-02-08 06:19:00,564 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:00,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 65 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:19:00,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-08 06:19:00,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2025-02-08 06:19:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 1.826086956521739) internal successors, (42), 39 states have internal predecessors, (42), 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) [2025-02-08 06:19:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2025-02-08 06:19:00,587 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 4 [2025-02-08 06:19:00,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:00,587 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2025-02-08 06:19:00,587 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:00,588 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2025-02-08 06:19:00,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-02-08 06:19:00,588 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:00,588 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-02-08 06:19:00,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-08 06:19:00,588 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:00,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:00,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1538047, now seen corresponding path program 1 times [2025-02-08 06:19:00,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:00,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951523529] [2025-02-08 06:19:00,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:00,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:00,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-02-08 06:19:00,602 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-02-08 06:19:00,602 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:00,602 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:00,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:00,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951523529] [2025-02-08 06:19:00,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951523529] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:19:00,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:19:00,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:19:00,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770342821] [2025-02-08 06:19:00,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:19:00,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:19:00,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:00,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:19:00,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:19:00,763 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:00,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:00,823 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2025-02-08 06:19:00,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:19:00,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-02-08 06:19:00,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:00,824 INFO L225 Difference]: With dead ends: 45 [2025-02-08 06:19:00,824 INFO L226 Difference]: Without dead ends: 45 [2025-02-08 06:19:00,824 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:19:00,825 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 14 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:00,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 116 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:00,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-08 06:19:00,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2025-02-08 06:19:00,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.76) internal successors, (44), 41 states have internal predecessors, (44), 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) [2025-02-08 06:19:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2025-02-08 06:19:00,829 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 4 [2025-02-08 06:19:00,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:00,829 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2025-02-08 06:19:00,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:00,829 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2025-02-08 06:19:00,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-08 06:19:00,830 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:00,830 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2025-02-08 06:19:00,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-08 06:19:00,830 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:00,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:00,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1424731604, now seen corresponding path program 1 times [2025-02-08 06:19:00,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:00,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138831091] [2025-02-08 06:19:00,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:00,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:00,836 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:19:00,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:19:00,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:00,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:01,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:01,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138831091] [2025-02-08 06:19:01,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138831091] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:01,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009824141] [2025-02-08 06:19:01,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:01,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:01,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:01,060 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) [2025-02-08 06:19:01,061 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 [2025-02-08 06:19:01,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-08 06:19:01,091 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-08 06:19:01,091 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:01,091 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:01,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 06:19:01,096 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:01,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2025-02-08 06:19:01,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:01,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:01,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:01,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009824141] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:01,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:01,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2025-02-08 06:19:01,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268432167] [2025-02-08 06:19:01,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:01,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:19:01,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:01,467 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:19:01,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:19:01,468 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:01,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:01,630 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2025-02-08 06:19:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:19:01,630 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-02-08 06:19:01,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:01,631 INFO L225 Difference]: With dead ends: 44 [2025-02-08 06:19:01,631 INFO L226 Difference]: Without dead ends: 44 [2025-02-08 06:19:01,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2025-02-08 06:19:01,632 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 27 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:01,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 222 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:01,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-08 06:19:01,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2025-02-08 06:19:01,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.75) internal successors, (42), 39 states have internal predecessors, (42), 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) [2025-02-08 06:19:01,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2025-02-08 06:19:01,635 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 7 [2025-02-08 06:19:01,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:01,635 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2025-02-08 06:19:01,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:01,635 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2025-02-08 06:19:01,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 06:19:01,635 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:01,635 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:01,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-08 06:19:01,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:01,836 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting selectionSortErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:01,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2133242857, now seen corresponding path program 1 times [2025-02-08 06:19:01,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:01,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138197670] [2025-02-08 06:19:01,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:01,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:01,841 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 06:19:01,851 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 06:19:01,851 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:01,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:01,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:01,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:01,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138197670] [2025-02-08 06:19:01,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138197670] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:19:01,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:19:01,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-08 06:19:01,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449076249] [2025-02-08 06:19:01,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:19:01,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-08 06:19:01,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:01,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-08 06:19:01,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-02-08 06:19:01,893 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-02-08 06:19:01,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:01,942 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2025-02-08 06:19:01,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-08 06:19:01,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 11 [2025-02-08 06:19:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:01,943 INFO L225 Difference]: With dead ends: 36 [2025-02-08 06:19:01,943 INFO L226 Difference]: Without dead ends: 36 [2025-02-08 06:19:01,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:19:01,943 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:01,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 40 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:19:01,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-02-08 06:19:01,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2025-02-08 06:19:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.5) internal successors, (36), 33 states have internal predecessors, (36), 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) [2025-02-08 06:19:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2025-02-08 06:19:01,946 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 11 [2025-02-08 06:19:01,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:01,946 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2025-02-08 06:19:01,946 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2025-02-08 06:19:01,946 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2025-02-08 06:19:01,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-08 06:19:01,946 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:01,946 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:01,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-08 06:19:01,947 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting selectionSortErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:01,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:01,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2133242856, now seen corresponding path program 1 times [2025-02-08 06:19:01,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:01,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389907984] [2025-02-08 06:19:01,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:01,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:01,951 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 06:19:01,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 06:19:01,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:01,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:02,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:02,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:02,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389907984] [2025-02-08 06:19:02,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389907984] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:02,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053613094] [2025-02-08 06:19:02,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:02,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:02,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:02,051 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) [2025-02-08 06:19:02,052 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 [2025-02-08 06:19:02,075 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-08 06:19:02,082 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-08 06:19:02,082 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:02,082 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:02,083 INFO L256 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-08 06:19:02,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:02,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:02,126 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:02,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053613094] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:02,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:02,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2025-02-08 06:19:02,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660996273] [2025-02-08 06:19:02,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:02,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-02-08 06:19:02,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:02,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-02-08 06:19:02,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-02-08 06:19:02,166 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:02,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:02,248 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2025-02-08 06:19:02,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 06:19:02,249 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-08 06:19:02,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:02,249 INFO L225 Difference]: With dead ends: 53 [2025-02-08 06:19:02,249 INFO L226 Difference]: Without dead ends: 53 [2025-02-08 06:19:02,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2025-02-08 06:19:02,250 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 11 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:02,250 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 291 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:02,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-08 06:19:02,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2025-02-08 06:19:02,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 40 states have internal predecessors, (43), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 06:19:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2025-02-08 06:19:02,256 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 11 [2025-02-08 06:19:02,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:02,257 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2025-02-08 06:19:02,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 9 states have internal predecessors, (18), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:02,257 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2025-02-08 06:19:02,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-02-08 06:19:02,258 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:02,258 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:02,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-02-08 06:19:02,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:02,459 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:02,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:02,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1706062706, now seen corresponding path program 1 times [2025-02-08 06:19:02,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:02,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100974836] [2025-02-08 06:19:02,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:02,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:02,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-08 06:19:02,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-08 06:19:02,471 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:02,471 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:02,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:19:02,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:02,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100974836] [2025-02-08 06:19:02,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100974836] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:19:02,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:19:02,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:19:02,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998669865] [2025-02-08 06:19:02,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:19:02,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:19:02,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:02,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:19:02,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:19:02,488 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2025-02-08 06:19:02,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:02,497 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2025-02-08 06:19:02,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:19:02,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2025-02-08 06:19:02,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:02,498 INFO L225 Difference]: With dead ends: 43 [2025-02-08 06:19:02,498 INFO L226 Difference]: Without dead ends: 43 [2025-02-08 06:19:02,499 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 [2025-02-08 06:19:02,499 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:02,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:19:02,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-08 06:19:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2025-02-08 06:19:02,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.4) internal successors, (42), 39 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 06:19:02,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2025-02-08 06:19:02,502 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 12 [2025-02-08 06:19:02,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:02,502 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2025-02-08 06:19:02,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2025-02-08 06:19:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2025-02-08 06:19:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-08 06:19:02,502 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:02,502 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:02,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-08 06:19:02,502 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:02,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:02,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1348336360, now seen corresponding path program 1 times [2025-02-08 06:19:02,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:02,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143815253] [2025-02-08 06:19:02,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:02,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:02,510 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-08 06:19:02,512 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-08 06:19:02,512 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:02,512 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:19:02,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:02,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143815253] [2025-02-08 06:19:02,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143815253] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:19:02,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:19:02,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-08 06:19:02,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961399041] [2025-02-08 06:19:02,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:19:02,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:19:02,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:02,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:19:02,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:19:02,535 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:19:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:02,546 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2025-02-08 06:19:02,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:19:02,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2025-02-08 06:19:02,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:02,547 INFO L225 Difference]: With dead ends: 42 [2025-02-08 06:19:02,547 INFO L226 Difference]: Without dead ends: 42 [2025-02-08 06:19:02,547 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 [2025-02-08 06:19:02,548 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:02,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:19:02,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2025-02-08 06:19:02,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2025-02-08 06:19:02,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 38 states have internal predecessors, (41), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 06:19:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2025-02-08 06:19:02,550 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 13 [2025-02-08 06:19:02,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:02,551 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2025-02-08 06:19:02,551 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:19:02,551 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2025-02-08 06:19:02,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-08 06:19:02,551 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:02,551 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:02,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-08 06:19:02,552 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting selectionSortErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:02,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:02,552 INFO L85 PathProgramCache]: Analyzing trace with hash -987228853, now seen corresponding path program 2 times [2025-02-08 06:19:02,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:02,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840552209] [2025-02-08 06:19:02,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:19:02,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:02,557 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-08 06:19:02,560 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 14 statements. [2025-02-08 06:19:02,560 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-02-08 06:19:02,560 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:19:02,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:02,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840552209] [2025-02-08 06:19:02,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840552209] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:19:02,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:19:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:19:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618203417] [2025-02-08 06:19:02,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:19:02,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-08 06:19:02,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:02,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-08 06:19:02,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:19:02,590 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2025-02-08 06:19:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:02,610 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2025-02-08 06:19:02,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-08 06:19:02,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 14 [2025-02-08 06:19:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:02,610 INFO L225 Difference]: With dead ends: 43 [2025-02-08 06:19:02,611 INFO L226 Difference]: Without dead ends: 43 [2025-02-08 06:19:02,611 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-08 06:19:02,611 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:02,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 57 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:19:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-08 06:19:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2025-02-08 06:19:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 39 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-08 06:19:02,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2025-02-08 06:19:02,614 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 14 [2025-02-08 06:19:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:02,614 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2025-02-08 06:19:02,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2025-02-08 06:19:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2025-02-08 06:19:02,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-08 06:19:02,615 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:02,615 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:02,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-08 06:19:02,615 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting selectionSortErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:02,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash -987228533, now seen corresponding path program 1 times [2025-02-08 06:19:02,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:02,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568952979] [2025-02-08 06:19:02,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:02,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:02,619 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-08 06:19:02,623 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-08 06:19:02,624 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:02,624 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-08 06:19:02,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:02,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568952979] [2025-02-08 06:19:02,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568952979] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:19:02,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:19:02,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2025-02-08 06:19:02,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69234117] [2025-02-08 06:19:02,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:19:02,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 06:19:02,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:02,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 06:19:02,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2025-02-08 06:19:02,811 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 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) [2025-02-08 06:19:03,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:03,008 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2025-02-08 06:19:03,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-08 06:19:03,009 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 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 14 [2025-02-08 06:19:03,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:03,009 INFO L225 Difference]: With dead ends: 67 [2025-02-08 06:19:03,009 INFO L226 Difference]: Without dead ends: 67 [2025-02-08 06:19:03,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-02-08 06:19:03,010 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 50 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:03,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 76 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-08 06:19:03,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2025-02-08 06:19:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.4130434782608696) internal successors, (65), 55 states have internal predecessors, (65), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2025-02-08 06:19:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2025-02-08 06:19:03,014 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 14 [2025-02-08 06:19:03,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:03,014 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2025-02-08 06:19:03,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 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) [2025-02-08 06:19:03,014 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2025-02-08 06:19:03,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 06:19:03,015 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:03,015 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:03,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-08 06:19:03,015 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:03,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:03,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1328880534, now seen corresponding path program 1 times [2025-02-08 06:19:03,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:03,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912497856] [2025-02-08 06:19:03,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:03,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:03,026 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 06:19:03,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:19:03,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:03,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:03,100 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:19:03,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:03,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912497856] [2025-02-08 06:19:03,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912497856] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:19:03,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:19:03,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-08 06:19:03,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878578016] [2025-02-08 06:19:03,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:19:03,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-08 06:19:03,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:03,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-08 06:19:03,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:19:03,102 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-08 06:19:03,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:03,120 INFO L93 Difference]: Finished difference Result 59 states and 72 transitions. [2025-02-08 06:19:03,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-08 06:19:03,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2025-02-08 06:19:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:03,121 INFO L225 Difference]: With dead ends: 59 [2025-02-08 06:19:03,121 INFO L226 Difference]: Without dead ends: 46 [2025-02-08 06:19:03,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-08 06:19:03,122 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:03,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:19:03,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-02-08 06:19:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2025-02-08 06:19:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 36 states have internal predecessors, (43), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2025-02-08 06:19:03,124 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 15 [2025-02-08 06:19:03,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:03,124 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2025-02-08 06:19:03,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2025-02-08 06:19:03,124 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2025-02-08 06:19:03,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-02-08 06:19:03,125 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:03,125 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:03,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-08 06:19:03,125 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting selectionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:03,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash -539313470, now seen corresponding path program 1 times [2025-02-08 06:19:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:03,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181466121] [2025-02-08 06:19:03,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:03,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:03,129 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-08 06:19:03,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-08 06:19:03,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:03,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:19:03,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:03,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181466121] [2025-02-08 06:19:03,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181466121] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:19:03,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:19:03,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-08 06:19:03,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927020686] [2025-02-08 06:19:03,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:19:03,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-08 06:19:03,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:03,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-08 06:19:03,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-02-08 06:19:03,204 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2025-02-08 06:19:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:03,287 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2025-02-08 06:19:03,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-02-08 06:19:03,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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 15 [2025-02-08 06:19:03,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:03,288 INFO L225 Difference]: With dead ends: 63 [2025-02-08 06:19:03,288 INFO L226 Difference]: Without dead ends: 63 [2025-02-08 06:19:03,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2025-02-08 06:19:03,289 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:03,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 85 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:03,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2025-02-08 06:19:03,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 50. [2025-02-08 06:19:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 47 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:03,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2025-02-08 06:19:03,291 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 15 [2025-02-08 06:19:03,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:03,291 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2025-02-08 06:19:03,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 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) [2025-02-08 06:19:03,292 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2025-02-08 06:19:03,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-02-08 06:19:03,292 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:03,292 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:03,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-08 06:19:03,292 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting selectionSortErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:03,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:03,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1433294722, now seen corresponding path program 1 times [2025-02-08 06:19:03,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:03,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779671869] [2025-02-08 06:19:03,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:03,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:03,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-02-08 06:19:03,301 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-02-08 06:19:03,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:03,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:03,361 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:19:03,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:03,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779671869] [2025-02-08 06:19:03,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779671869] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-08 06:19:03,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-08 06:19:03,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-02-08 06:19:03,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129858460] [2025-02-08 06:19:03,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-08 06:19:03,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-08 06:19:03,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:03,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-08 06:19:03,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-08 06:19:03,362 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-02-08 06:19:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:03,422 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2025-02-08 06:19:03,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-08 06:19:03,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 19 [2025-02-08 06:19:03,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:03,423 INFO L225 Difference]: With dead ends: 61 [2025-02-08 06:19:03,423 INFO L226 Difference]: Without dead ends: 61 [2025-02-08 06:19:03,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2025-02-08 06:19:03,424 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:03,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 80 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-08 06:19:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-08 06:19:03,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2025-02-08 06:19:03,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 46 states have (on average 1.326086956521739) internal successors, (61), 51 states have internal predecessors, (61), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:03,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2025-02-08 06:19:03,426 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 19 [2025-02-08 06:19:03,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:03,426 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2025-02-08 06:19:03,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-02-08 06:19:03,426 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2025-02-08 06:19:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-08 06:19:03,426 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:03,426 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:03,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-08 06:19:03,427 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting selectionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:03,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1482453521, now seen corresponding path program 1 times [2025-02-08 06:19:03,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:03,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326797133] [2025-02-08 06:19:03,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:03,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:03,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 06:19:03,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 06:19:03,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:03,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:03,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:03,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:03,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326797133] [2025-02-08 06:19:03,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326797133] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:03,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928912941] [2025-02-08 06:19:03,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:03,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:03,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:03,546 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) [2025-02-08 06:19:03,548 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 [2025-02-08 06:19:03,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-08 06:19:03,586 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-08 06:19:03,586 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:03,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:03,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 06:19:03,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:03,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:03,690 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:03,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928912941] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:03,759 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:03,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2025-02-08 06:19:03,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759727981] [2025-02-08 06:19:03,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:03,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:19:03,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:03,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:19:03,761 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:19:03,762 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:03,921 INFO L93 Difference]: Finished difference Result 106 states and 118 transitions. [2025-02-08 06:19:03,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 06:19:03,921 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2025-02-08 06:19:03,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:03,922 INFO L225 Difference]: With dead ends: 106 [2025-02-08 06:19:03,922 INFO L226 Difference]: Without dead ends: 106 [2025-02-08 06:19:03,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2025-02-08 06:19:03,923 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 114 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:03,924 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 139 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-02-08 06:19:03,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 93. [2025-02-08 06:19:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 83 states have (on average 1.3012048192771084) internal successors, (108), 88 states have internal predecessors, (108), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:03,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 112 transitions. [2025-02-08 06:19:03,931 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 112 transitions. Word has length 20 [2025-02-08 06:19:03,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:03,931 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 112 transitions. [2025-02-08 06:19:03,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 14 states have internal predecessors, (33), 1 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 112 transitions. [2025-02-08 06:19:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-08 06:19:03,932 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:03,932 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:03,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-08 06:19:04,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:04,133 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:04,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:04,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1288273307, now seen corresponding path program 1 times [2025-02-08 06:19:04,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:04,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904879573] [2025-02-08 06:19:04,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:04,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:04,139 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 06:19:04,144 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 06:19:04,146 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:04,146 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:19:04,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:04,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904879573] [2025-02-08 06:19:04,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904879573] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:04,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834959510] [2025-02-08 06:19:04,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:04,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:04,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:04,280 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) [2025-02-08 06:19:04,282 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 [2025-02-08 06:19:04,308 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-02-08 06:19:04,318 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-02-08 06:19:04,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:04,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:04,319 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-02-08 06:19:04,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:04,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:19:04,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:04,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2025-02-08 06:19:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-02-08 06:19:04,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834959510] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:04,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:04,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2025-02-08 06:19:04,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650941810] [2025-02-08 06:19:04,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:04,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-08 06:19:04,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:04,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-08 06:19:04,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2025-02-08 06:19:04,541 INFO L87 Difference]: Start difference. First operand 93 states and 112 transitions. Second operand has 21 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:04,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:04,972 INFO L93 Difference]: Finished difference Result 120 states and 142 transitions. [2025-02-08 06:19:04,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2025-02-08 06:19:04,977 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2025-02-08 06:19:04,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:04,978 INFO L225 Difference]: With dead ends: 120 [2025-02-08 06:19:04,978 INFO L226 Difference]: Without dead ends: 120 [2025-02-08 06:19:04,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=360, Invalid=1122, Unknown=0, NotChecked=0, Total=1482 [2025-02-08 06:19:04,979 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 164 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:04,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 95 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:04,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2025-02-08 06:19:04,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 74. [2025-02-08 06:19:04,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 69 states have internal predecessors, (83), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:04,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 87 transitions. [2025-02-08 06:19:04,987 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 87 transitions. Word has length 21 [2025-02-08 06:19:04,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:04,987 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 87 transitions. [2025-02-08 06:19:04,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.45) internal successors, (49), 18 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 87 transitions. [2025-02-08 06:19:04,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-08 06:19:04,991 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:04,991 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:05,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-08 06:19:05,192 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,SelfDestructingSolverStorable13 [2025-02-08 06:19:05,193 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting selectionSortErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:05,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:05,193 INFO L85 PathProgramCache]: Analyzing trace with hash -109996073, now seen corresponding path program 1 times [2025-02-08 06:19:05,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:05,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972155052] [2025-02-08 06:19:05,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:05,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:05,207 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 06:19:05,218 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 06:19:05,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:05,223 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:05,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:19:05,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:05,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972155052] [2025-02-08 06:19:05,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972155052] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:05,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418223768] [2025-02-08 06:19:05,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:05,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:05,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:05,346 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) [2025-02-08 06:19:05,347 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 [2025-02-08 06:19:05,379 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 29 statements into 1 equivalence classes. [2025-02-08 06:19:05,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 29 of 29 statements. [2025-02-08 06:19:05,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:05,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:05,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 06:19:05,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:05,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:19:05,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:05,631 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-08 06:19:05,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418223768] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:05,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:05,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 17 [2025-02-08 06:19:05,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098093403] [2025-02-08 06:19:05,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:05,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:19:05,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:05,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:19:05,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:19:05,632 INFO L87 Difference]: Start difference. First operand 74 states and 87 transitions. Second operand has 17 states, 16 states have (on average 3.8125) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:05,713 INFO L93 Difference]: Finished difference Result 66 states and 73 transitions. [2025-02-08 06:19:05,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-02-08 06:19:05,714 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.8125) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2025-02-08 06:19:05,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:05,714 INFO L225 Difference]: With dead ends: 66 [2025-02-08 06:19:05,714 INFO L226 Difference]: Without dead ends: 48 [2025-02-08 06:19:05,714 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2025-02-08 06:19:05,715 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 20 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:05,715 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 152 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:05,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2025-02-08 06:19:05,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2025-02-08 06:19:05,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.25) internal successors, (50), 43 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2025-02-08 06:19:05,716 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 29 [2025-02-08 06:19:05,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:05,717 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2025-02-08 06:19:05,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.8125) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (6), 5 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:05,717 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2025-02-08 06:19:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-08 06:19:05,717 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:05,717 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:05,726 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-08 06:19:05,924 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,SelfDestructingSolverStorable14 [2025-02-08 06:19:05,924 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting selectionSortErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:05,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:05,925 INFO L85 PathProgramCache]: Analyzing trace with hash -974022070, now seen corresponding path program 2 times [2025-02-08 06:19:05,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:05,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230984181] [2025-02-08 06:19:05,925 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:19:05,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:05,933 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-08 06:19:05,944 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 06:19:05,947 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:19:05,947 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:06,073 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:06,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:06,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230984181] [2025-02-08 06:19:06,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230984181] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:06,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632170143] [2025-02-08 06:19:06,073 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-08 06:19:06,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:06,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:06,077 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) [2025-02-08 06:19:06,079 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 [2025-02-08 06:19:06,114 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-08 06:19:06,129 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-08 06:19:06,129 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-08 06:19:06,130 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:06,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 06:19:06,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:06,208 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:06,332 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-08 06:19:06,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632170143] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:06,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:06,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2025-02-08 06:19:06,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329584060] [2025-02-08 06:19:06,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:06,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2025-02-08 06:19:06,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:06,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2025-02-08 06:19:06,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2025-02-08 06:19:06,333 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:06,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:06,554 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2025-02-08 06:19:06,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 06:19:06,555 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-02-08 06:19:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:06,555 INFO L225 Difference]: With dead ends: 58 [2025-02-08 06:19:06,555 INFO L226 Difference]: Without dead ends: 58 [2025-02-08 06:19:06,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2025-02-08 06:19:06,556 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 184 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:06,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 88 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2025-02-08 06:19:06,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2025-02-08 06:19:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 48 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2025-02-08 06:19:06,557 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 32 [2025-02-08 06:19:06,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:06,557 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2025-02-08 06:19:06,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 16 states have internal predecessors, (50), 2 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:06,557 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2025-02-08 06:19:06,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2025-02-08 06:19:06,558 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:06,558 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:06,569 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-08 06:19:06,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2025-02-08 06:19:06,771 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting selectionSortErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:06,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1489855921, now seen corresponding path program 3 times [2025-02-08 06:19:06,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:06,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304656463] [2025-02-08 06:19:06,771 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:19:06,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:06,782 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 4 equivalence classes. [2025-02-08 06:19:06,796 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 37 statements. [2025-02-08 06:19:06,796 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 06:19:06,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 06:19:07,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:07,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304656463] [2025-02-08 06:19:07,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304656463] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:07,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575074994] [2025-02-08 06:19:07,132 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-08 06:19:07,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:07,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:07,134 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) [2025-02-08 06:19:07,136 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 [2025-02-08 06:19:07,162 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 37 statements into 4 equivalence classes. [2025-02-08 06:19:07,172 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 21 of 37 statements. [2025-02-08 06:19:07,172 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-08 06:19:07,172 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:07,173 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 33 conjuncts are in the unsatisfiable core [2025-02-08 06:19:07,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:07,185 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 [2025-02-08 06:19:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 06:19:07,459 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2025-02-08 06:19:07,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575074994] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:07,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:07,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2025-02-08 06:19:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124148257] [2025-02-08 06:19:07,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:07,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-02-08 06:19:07,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:07,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-02-08 06:19:07,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2025-02-08 06:19:07,947 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 29 states, 25 states have (on average 3.04) internal successors, (76), 23 states have internal predecessors, (76), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:08,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:08,247 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2025-02-08 06:19:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 06:19:08,248 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 3.04) internal successors, (76), 23 states have internal predecessors, (76), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2025-02-08 06:19:08,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:08,248 INFO L225 Difference]: With dead ends: 56 [2025-02-08 06:19:08,248 INFO L226 Difference]: Without dead ends: 56 [2025-02-08 06:19:08,249 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=191, Invalid=999, Unknown=0, NotChecked=0, Total=1190 [2025-02-08 06:19:08,249 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 215 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:08,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 62 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:19:08,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-02-08 06:19:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2025-02-08 06:19:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 48 states have internal predecessors, (55), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:08,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2025-02-08 06:19:08,251 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 37 [2025-02-08 06:19:08,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:08,251 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2025-02-08 06:19:08,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 3.04) internal successors, (76), 23 states have internal predecessors, (76), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:08,251 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2025-02-08 06:19:08,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-02-08 06:19:08,254 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:08,254 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:08,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-08 06:19:08,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:08,454 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting selectionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:08,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:08,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1059106724, now seen corresponding path program 1 times [2025-02-08 06:19:08,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:08,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238423541] [2025-02-08 06:19:08,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:08,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:08,463 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 06:19:08,471 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 06:19:08,472 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:08,472 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:08,602 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-08 06:19:08,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:08,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238423541] [2025-02-08 06:19:08,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238423541] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:08,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28821399] [2025-02-08 06:19:08,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:08,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:08,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:08,606 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) [2025-02-08 06:19:08,611 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 [2025-02-08 06:19:08,645 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-02-08 06:19:08,660 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-02-08 06:19:08,660 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:08,660 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:08,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-02-08 06:19:08,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:08,802 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-08 06:19:08,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:08,820 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2025-02-08 06:19:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-08 06:19:08,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28821399] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:08,942 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:08,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-02-08 06:19:08,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990318395] [2025-02-08 06:19:08,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:08,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 06:19:08,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:08,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 06:19:08,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2025-02-08 06:19:08,943 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 17 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:09,320 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2025-02-08 06:19:09,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-08 06:19:09,320 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 17 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2025-02-08 06:19:09,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:09,321 INFO L225 Difference]: With dead ends: 78 [2025-02-08 06:19:09,321 INFO L226 Difference]: Without dead ends: 78 [2025-02-08 06:19:09,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2025-02-08 06:19:09,322 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 166 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:09,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 134 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:19:09,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2025-02-08 06:19:09,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 49. [2025-02-08 06:19:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 46 states have internal predecessors, (53), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:09,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2025-02-08 06:19:09,324 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 38 [2025-02-08 06:19:09,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:09,325 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2025-02-08 06:19:09,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 17 states have internal predecessors, (73), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:09,325 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2025-02-08 06:19:09,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-08 06:19:09,327 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:09,327 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:09,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-08 06:19:09,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2025-02-08 06:19:09,528 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting selectionSortErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:09,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:09,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1514282728, now seen corresponding path program 1 times [2025-02-08 06:19:09,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:09,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396493627] [2025-02-08 06:19:09,529 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:09,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:09,534 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 06:19:09,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 06:19:09,543 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:09,543 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-08 06:19:09,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396493627] [2025-02-08 06:19:09,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396493627] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110155884] [2025-02-08 06:19:09,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-08 06:19:09,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:09,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:09,666 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) [2025-02-08 06:19:09,671 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 [2025-02-08 06:19:09,702 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-08 06:19:09,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-08 06:19:09,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-08 06:19:09,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:09,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-08 06:19:09,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:09,868 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-08 06:19:09,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:09,895 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 29 treesize of output 25 [2025-02-08 06:19:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2025-02-08 06:19:09,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110155884] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:09,999 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:09,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2025-02-08 06:19:10,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000231733] [2025-02-08 06:19:10,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:10,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-02-08 06:19:10,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:10,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-02-08 06:19:10,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2025-02-08 06:19:10,003 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand has 23 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 17 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:10,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:10,187 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2025-02-08 06:19:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-02-08 06:19:10,187 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 17 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2025-02-08 06:19:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:10,188 INFO L225 Difference]: With dead ends: 50 [2025-02-08 06:19:10,188 INFO L226 Difference]: Without dead ends: 50 [2025-02-08 06:19:10,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2025-02-08 06:19:10,189 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 103 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:10,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 86 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:10,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2025-02-08 06:19:10,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2025-02-08 06:19:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2025-02-08 06:19:10,193 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 42 [2025-02-08 06:19:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:10,193 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2025-02-08 06:19:10,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.8636363636363638) internal successors, (85), 17 states have internal predecessors, (85), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2025-02-08 06:19:10,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-08 06:19:10,193 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:10,193 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:10,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-08 06:19:10,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:10,395 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting selectionSortErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:10,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1514282408, now seen corresponding path program 4 times [2025-02-08 06:19:10,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:10,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334976414] [2025-02-08 06:19:10,395 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:19:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:10,404 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-08 06:19:10,410 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 37 of 42 statements. [2025-02-08 06:19:10,410 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:19:10,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:19:10,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:10,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334976414] [2025-02-08 06:19:10,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334976414] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:10,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894278022] [2025-02-08 06:19:10,499 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-08 06:19:10,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:10,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:10,505 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) [2025-02-08 06:19:10,506 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 [2025-02-08 06:19:10,550 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 42 statements into 2 equivalence classes. [2025-02-08 06:19:10,568 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 37 of 42 statements. [2025-02-08 06:19:10,568 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-08 06:19:10,568 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:10,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-02-08 06:19:10,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:10,613 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:19:10,614 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:10,674 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2025-02-08 06:19:10,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894278022] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:10,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:10,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 10 [2025-02-08 06:19:10,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782285665] [2025-02-08 06:19:10,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:10,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-02-08 06:19:10,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:10,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-02-08 06:19:10,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2025-02-08 06:19:10,677 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:10,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:10,771 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2025-02-08 06:19:10,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-08 06:19:10,772 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2025-02-08 06:19:10,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:10,772 INFO L225 Difference]: With dead ends: 94 [2025-02-08 06:19:10,772 INFO L226 Difference]: Without dead ends: 65 [2025-02-08 06:19:10,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 78 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2025-02-08 06:19:10,773 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:10,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 134 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:10,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2025-02-08 06:19:10,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2025-02-08 06:19:10,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 54 states have internal predecessors, (65), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:10,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2025-02-08 06:19:10,781 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 42 [2025-02-08 06:19:10,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:10,781 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2025-02-08 06:19:10,781 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 9 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:10,781 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2025-02-08 06:19:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2025-02-08 06:19:10,782 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:10,782 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:10,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-02-08 06:19:10,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:10,983 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting selectionSortErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:10,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:10,983 INFO L85 PathProgramCache]: Analyzing trace with hash -459548417, now seen corresponding path program 5 times [2025-02-08 06:19:10,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:10,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994747217] [2025-02-08 06:19:10,983 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:19:10,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:10,991 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 47 statements into 5 equivalence classes. [2025-02-08 06:19:11,005 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 06:19:11,005 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:19:11,005 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-08 06:19:11,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:11,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994747217] [2025-02-08 06:19:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994747217] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:11,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900945742] [2025-02-08 06:19:11,154 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-08 06:19:11,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:11,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:11,156 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) [2025-02-08 06:19:11,157 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 [2025-02-08 06:19:11,197 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 47 statements into 5 equivalence classes. [2025-02-08 06:19:11,224 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) and asserted 47 of 47 statements. [2025-02-08 06:19:11,224 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2025-02-08 06:19:11,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:11,225 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-08 06:19:11,226 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-08 06:19:11,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-08 06:19:11,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900945742] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:11,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:11,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 17 [2025-02-08 06:19:11,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912736095] [2025-02-08 06:19:11,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:11,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-08 06:19:11,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:11,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-08 06:19:11,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2025-02-08 06:19:11,397 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 17 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:11,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:11,493 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2025-02-08 06:19:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-08 06:19:11,494 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2025-02-08 06:19:11,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:11,494 INFO L225 Difference]: With dead ends: 76 [2025-02-08 06:19:11,494 INFO L226 Difference]: Without dead ends: 62 [2025-02-08 06:19:11,494 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 80 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2025-02-08 06:19:11,495 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 28 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:11,495 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 136 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-08 06:19:11,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-08 06:19:11,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2025-02-08 06:19:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 57 states have (on average 1.1929824561403508) internal successors, (68), 57 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:11,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 70 transitions. [2025-02-08 06:19:11,496 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 70 transitions. Word has length 47 [2025-02-08 06:19:11,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:11,496 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 70 transitions. [2025-02-08 06:19:11,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:11,497 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 70 transitions. [2025-02-08 06:19:11,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-08 06:19:11,497 INFO L210 NwaCegarLoop]: Found error trace [2025-02-08 06:19:11,497 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:11,503 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 [2025-02-08 06:19:11,697 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,SelfDestructingSolverStorable20 [2025-02-08 06:19:11,697 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting selectionSortErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 15 more)] === [2025-02-08 06:19:11,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-08 06:19:11,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1231635634, now seen corresponding path program 6 times [2025-02-08 06:19:11,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-08 06:19:11,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492734394] [2025-02-08 06:19:11,698 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:19:11,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-08 06:19:11,707 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 50 statements into 5 equivalence classes. [2025-02-08 06:19:11,713 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 34 of 50 statements. [2025-02-08 06:19:11,713 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 06:19:11,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 1 proven. 26 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-08 06:19:12,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-08 06:19:12,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492734394] [2025-02-08 06:19:12,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492734394] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-08 06:19:12,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385510860] [2025-02-08 06:19:12,010 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-08 06:19:12,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:12,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-08 06:19:12,015 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) [2025-02-08 06:19:12,018 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 [2025-02-08 06:19:12,049 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 50 statements into 5 equivalence classes. [2025-02-08 06:19:12,064 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) and asserted 34 of 50 statements. [2025-02-08 06:19:12,064 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2025-02-08 06:19:12,064 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-08 06:19:12,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-08 06:19:12,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-08 06:19:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-08 06:19:12,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-08 06:19:12,842 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 [2025-02-08 06:19:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2025-02-08 06:19:12,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385510860] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-08 06:19:12,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-08 06:19:12,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 32 [2025-02-08 06:19:12,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248741888] [2025-02-08 06:19:12,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-08 06:19:12,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-08 06:19:12,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-08 06:19:12,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-08 06:19:12,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=932, Unknown=0, NotChecked=0, Total=1056 [2025-02-08 06:19:12,869 INFO L87 Difference]: Start difference. First operand 60 states and 70 transitions. Second operand has 33 states, 30 states have (on average 3.0) internal successors, (90), 27 states have internal predecessors, (90), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:13,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-08 06:19:13,304 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2025-02-08 06:19:13,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-08 06:19:13,307 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 3.0) internal successors, (90), 27 states have internal predecessors, (90), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2025-02-08 06:19:13,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-08 06:19:13,308 INFO L225 Difference]: With dead ends: 66 [2025-02-08 06:19:13,308 INFO L226 Difference]: Without dead ends: 0 [2025-02-08 06:19:13,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=258, Invalid=1464, Unknown=0, NotChecked=0, Total=1722 [2025-02-08 06:19:13,309 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 140 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-08 06:19:13,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 130 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-08 06:19:13,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-02-08 06:19:13,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-02-08 06:19:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:13,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-02-08 06:19:13,310 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 50 [2025-02-08 06:19:13,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-08 06:19:13,310 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-02-08 06:19:13,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 3.0) internal successors, (90), 27 states have internal predecessors, (90), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-08 06:19:13,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-02-08 06:19:13,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-02-08 06:19:13,316 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining) [2025-02-08 06:19:13,316 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (16 of 18 remaining) [2025-02-08 06:19:13,316 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (15 of 18 remaining) [2025-02-08 06:19:13,316 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (14 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 18 remaining) [2025-02-08 06:19:13,317 INFO L782 garLoopResultBuilder]: Registering result SAFE for location selectionSortErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 18 remaining) [2025-02-08 06:19:13,325 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2025-02-08 06:19:13,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-08 06:19:13,520 INFO L422 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-08 06:19:13,522 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-08 06:19:13,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.02 06:19:13 BoogieIcfgContainer [2025-02-08 06:19:13,524 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-08 06:19:13,524 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-08 06:19:13,525 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-08 06:19:13,525 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-08 06:19:13,525 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.02 06:19:00" (3/4) ... [2025-02-08 06:19:13,529 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-08 06:19:13,534 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure selectionSort [2025-02-08 06:19:13,536 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2025-02-08 06:19:13,536 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-02-08 06:19:13,537 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-02-08 06:19:13,537 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-08 06:19:13,595 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-08 06:19:13,596 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-08 06:19:13,596 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-08 06:19:13,596 INFO L158 Benchmark]: Toolchain (without parser) took 13785.26ms. Allocated memory was 142.6MB in the beginning and 335.5MB in the end (delta: 192.9MB). Free memory was 105.8MB in the beginning and 251.4MB in the end (delta: -145.6MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2025-02-08 06:19:13,596 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 06:19:13,596 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.94ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 95.4MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 06:19:13,597 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.69ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 94.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 06:19:13,598 INFO L158 Benchmark]: Boogie Preprocessor took 29.81ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 93.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-08 06:19:13,598 INFO L158 Benchmark]: IcfgBuilder took 260.78ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 78.1MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-08 06:19:13,598 INFO L158 Benchmark]: TraceAbstraction took 13232.39ms. Allocated memory was 142.6MB in the beginning and 335.5MB in the end (delta: 192.9MB). Free memory was 77.6MB in the beginning and 258.9MB in the end (delta: -181.3MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2025-02-08 06:19:13,598 INFO L158 Benchmark]: Witness Printer took 71.19ms. Allocated memory is still 335.5MB. Free memory was 258.9MB in the beginning and 251.4MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-08 06:19:13,600 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 116.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 159.94ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 95.4MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.69ms. Allocated memory is still 142.6MB. Free memory was 95.4MB in the beginning and 94.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.81ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 93.0MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 260.78ms. Allocated memory is still 142.6MB. Free memory was 93.0MB in the beginning and 78.1MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13232.39ms. Allocated memory was 142.6MB in the beginning and 335.5MB in the end (delta: 192.9MB). Free memory was 77.6MB in the beginning and 258.9MB in the end (delta: -181.3MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Witness Printer took 71.19ms. Allocated memory is still 335.5MB. Free memory was 258.9MB in the beginning and 251.4MB in the end (delta: 7.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 26]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 42]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 42]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 42]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 47 locations, 18 error locations. Started 1 CEGAR loops. OverallTime: 13.2s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1436 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1430 mSDsluCounter, 2388 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1878 mSDsCounter, 80 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3233 IncrementalHoareTripleChecker+Invalid, 3313 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 80 mSolverCounterUnsat, 510 mSDtfsCounter, 3233 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 962 GetRequests, 601 SyntacticMatches, 33 SemanticMatches, 328 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1906 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=13, InterpolantAutomatonStates: 201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 165 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 873 NumberOfCodeBlocks, 793 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 1203 ConstructedInterpolants, 0 QuantifiedInterpolants, 9646 SizeOfPredicates, 81 NumberOfNonLiveVariables, 1658 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 46 InterpolantComputations, 10 PerfectInterpolantSequences, 607/925 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-08 06:19:13,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE