./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 551b0097 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/list-ext3-properties/sll_shallow_copy-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:45:44,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:45:44,300 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-09 22:45:44,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:45:44,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:45:44,332 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:45:44,334 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:45:44,334 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:45:44,335 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:45:44,335 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:45:44,336 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:45:44,336 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:45:44,336 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:45:44,336 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:45:44,336 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:45:44,337 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:45:44,337 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:45:44,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:45:44,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:45:44,337 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:45:44,337 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:45:44,338 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:45:44,338 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:45:44,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:45:44,338 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:45:44,338 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:45:44,338 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:45:44,338 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:45:44,338 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:45:44,338 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:45:44,338 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:45:44,338 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:45:44,338 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:45:44,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:45:44,339 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:45:44,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:45:44,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:45:44,339 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:45:44,339 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:45:44,339 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:45:44,339 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:45:44,339 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 22:45:44,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 22:45:44,340 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:45:44,340 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:45:44,340 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:45:44,340 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:45:44,340 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2025-01-09 22:45:44,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:45:44,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:45:44,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:45:44,595 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:45:44,595 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:45:44,596 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2025-01-09 22:45:45,766 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b77fa23f9/6bc7c5d62a4c488484d824e05c27f5db/FLAGca09831e8 [2025-01-09 22:45:46,061 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:45:46,062 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2025-01-09 22:45:46,076 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b77fa23f9/6bc7c5d62a4c488484d824e05c27f5db/FLAGca09831e8 [2025-01-09 22:45:46,328 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b77fa23f9/6bc7c5d62a4c488484d824e05c27f5db [2025-01-09 22:45:46,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:45:46,331 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:45:46,332 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:45:46,333 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:45:46,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:45:46,336 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,337 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0fe948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46, skipping insertion in model container [2025-01-09 22:45:46,337 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,359 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:45:46,519 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:45:46,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:45:46,536 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 22:45:46,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:45:46,597 INFO L204 MainTranslator]: Completed translation [2025-01-09 22:45:46,597 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46 WrapperNode [2025-01-09 22:45:46,598 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:45:46,598 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 22:45:46,599 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 22:45:46,599 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 22:45:46,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,610 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,623 INFO L138 Inliner]: procedures = 114, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 31 [2025-01-09 22:45:46,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 22:45:46,623 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 22:45:46,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 22:45:46,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 22:45:46,629 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,630 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,632 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,640 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2025-01-09 22:45:46,640 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,641 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,645 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,649 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,653 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 22:45:46,654 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 22:45:46,654 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 22:45:46,654 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 22:45:46,655 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (1/1) ... [2025-01-09 22:45:46,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:45:46,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:45:46,677 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) [2025-01-09 22:45:46,679 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 [2025-01-09 22:45:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2025-01-09 22:45:46,696 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2025-01-09 22:45:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 22:45:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 22:45:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 22:45:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 22:45:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 22:45:46,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 22:45:46,771 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 22:45:46,773 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 22:45:46,884 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2025-01-09 22:45:46,887 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 22:45:46,893 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 22:45:46,895 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 22:45:46,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:45:46 BoogieIcfgContainer [2025-01-09 22:45:46,896 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 22:45:46,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 22:45:46,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 22:45:46,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 22:45:46,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:45:46" (1/3) ... [2025-01-09 22:45:46,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b1425f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:45:46, skipping insertion in model container [2025-01-09 22:45:46,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:46" (2/3) ... [2025-01-09 22:45:46,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b1425f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:45:46, skipping insertion in model container [2025-01-09 22:45:46,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:45:46" (3/3) ... [2025-01-09 22:45:46,905 INFO L128 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2025-01-09 22:45:46,916 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 22:45:46,917 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll_shallow_copy-2.i that has 2 procedures, 35 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2025-01-09 22:45:46,949 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 22:45:46,959 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;@5c4e982e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 22:45:46,960 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-01-09 22:45:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 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) [2025-01-09 22:45:46,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-09 22:45:46,968 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:45:46,969 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:45:46,969 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:45:46,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:45:46,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625018, now seen corresponding path program 1 times [2025-01-09 22:45:46,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:45:46,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723002696] [2025-01-09 22:45:46,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:45:46,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:45:47,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 22:45:47,055 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 22:45:47,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:45:47,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:45:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:45:47,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:45:47,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723002696] [2025-01-09 22:45:47,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723002696] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:45:47,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089501608] [2025-01-09 22:45:47,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:45:47,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:45:47,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:45:47,384 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) [2025-01-09 22:45:47,385 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 [2025-01-09 22:45:47,417 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 22:45:47,426 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 22:45:47,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:45:47,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:45:47,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 22:45:47,433 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:45:47,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:45:47,498 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |alloc_node_~temp~0#1.base| (select |c_#valid| |alloc_node_~temp~0#1.base|))) (= (select |c_old(#valid)| |alloc_node_~temp~0#1.base|) 0))) is different from true [2025-01-09 22:45:47,551 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2025-01-09 22:45:47,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2025-01-09 22:45:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2025-01-09 22:45:47,557 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:45:47,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089501608] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:45:47,618 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:45:47,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2025-01-09 22:45:47,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137427222] [2025-01-09 22:45:47,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:45:47,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-01-09 22:45:47,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:45:47,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-01-09 22:45:47,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=71, Unknown=1, NotChecked=16, Total=110 [2025-01-09 22:45:47,638 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 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 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:45:47,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:45:47,791 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2025-01-09 22:45:47,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 22:45:47,794 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2025-01-09 22:45:47,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:45:47,798 INFO L225 Difference]: With dead ends: 31 [2025-01-09 22:45:47,799 INFO L226 Difference]: Without dead ends: 28 [2025-01-09 22:45:47,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=104, Unknown=1, NotChecked=20, Total=156 [2025-01-09 22:45:47,803 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:45:47,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 61 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 28 Unchecked, 0.1s Time] [2025-01-09 22:45:47,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-09 22:45:47,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-01-09 22:45:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 24 states have internal predecessors, (24), 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) [2025-01-09 22:45:47,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2025-01-09 22:45:47,826 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 16 [2025-01-09 22:45:47,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:45:47,826 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2025-01-09 22:45:47,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 8 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:45:47,827 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2025-01-09 22:45:47,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-09 22:45:47,827 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:45:47,828 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:45:47,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 22:45:48,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 22:45:48,028 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:45:48,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:45:48,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625017, now seen corresponding path program 1 times [2025-01-09 22:45:48,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:45:48,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184961707] [2025-01-09 22:45:48,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:45:48,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:45:48,036 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 22:45:48,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 22:45:48,049 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:45:48,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:45:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:45:48,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:45:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184961707] [2025-01-09 22:45:48,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184961707] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:45:48,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103004557] [2025-01-09 22:45:48,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:45:48,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:45:48,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:45:48,327 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) [2025-01-09 22:45:48,329 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 [2025-01-09 22:45:48,360 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 22:45:48,368 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 22:45:48,369 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:45:48,369 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:45:48,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-01-09 22:45:48,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:45:48,380 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 [2025-01-09 22:45:48,516 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2025-01-09 22:45:48,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2025-01-09 22:45:48,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:45:48,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:45:52,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:45:52,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103004557] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:45:52,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:45:52,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 16 [2025-01-09 22:45:52,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324896997] [2025-01-09 22:45:52,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:45:52,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-01-09 22:45:52,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:45:52,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-01-09 22:45:52,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2025-01-09 22:45:52,774 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 22:45:52,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:45:52,953 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2025-01-09 22:45:52,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-01-09 22:45:52,954 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 16 [2025-01-09 22:45:52,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:45:52,954 INFO L225 Difference]: With dead ends: 25 [2025-01-09 22:45:52,954 INFO L226 Difference]: Without dead ends: 25 [2025-01-09 22:45:52,955 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2025-01-09 22:45:52,955 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:45:52,955 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 81 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:45:52,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2025-01-09 22:45:52,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2025-01-09 22:45:52,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 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) [2025-01-09 22:45:52,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2025-01-09 22:45:52,957 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2025-01-09 22:45:52,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:45:52,958 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2025-01-09 22:45:52,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 12 states have internal predecessors, (26), 3 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2025-01-09 22:45:52,958 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2025-01-09 22:45:52,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 22:45:52,958 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:45:52,958 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:45:52,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-01-09 22:45:53,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:45:53,159 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:45:53,160 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:45:53,160 INFO L85 PathProgramCache]: Analyzing trace with hash 78968552, now seen corresponding path program 1 times [2025-01-09 22:45:53,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:45:53,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284310706] [2025-01-09 22:45:53,160 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:45:53,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:45:53,165 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 22:45:53,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 22:45:53,168 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:45:53,168 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:45:53,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:45:53,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:45:53,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284310706] [2025-01-09 22:45:53,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284310706] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:45:53,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:45:53,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 22:45:53,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417719270] [2025-01-09 22:45:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:45:53,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:45:53,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:45:53,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:45:53,233 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 22:45:53,233 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:45:53,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:45:53,282 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2025-01-09 22:45:53,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:45:53,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2025-01-09 22:45:53,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:45:53,283 INFO L225 Difference]: With dead ends: 23 [2025-01-09 22:45:53,283 INFO L226 Difference]: Without dead ends: 23 [2025-01-09 22:45:53,283 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 22:45:53,283 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:45:53,284 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:45:53,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-09 22:45:53,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-01-09 22:45:53,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 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) [2025-01-09 22:45:53,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2025-01-09 22:45:53,288 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2025-01-09 22:45:53,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:45:53,288 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2025-01-09 22:45:53,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:45:53,289 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2025-01-09 22:45:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 22:45:53,289 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:45:53,290 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:45:53,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 22:45:53,290 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:45:53,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:45:53,290 INFO L85 PathProgramCache]: Analyzing trace with hash 78968553, now seen corresponding path program 1 times [2025-01-09 22:45:53,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:45:53,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151162719] [2025-01-09 22:45:53,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:45:53,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:45:53,295 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 22:45:53,300 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 22:45:53,301 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:45:53,301 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:45:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:45:53,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:45:53,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151162719] [2025-01-09 22:45:53,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151162719] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:45:53,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:45:53,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 22:45:53,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875229017] [2025-01-09 22:45:53,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:45:53,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:45:53,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:45:53,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:45:53,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 22:45:53,449 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:45:53,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:45:53,496 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2025-01-09 22:45:53,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:45:53,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2025-01-09 22:45:53,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:45:53,497 INFO L225 Difference]: With dead ends: 22 [2025-01-09 22:45:53,497 INFO L226 Difference]: Without dead ends: 22 [2025-01-09 22:45:53,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 22:45:53,498 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:45:53,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 69 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:45:53,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-09 22:45:53,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-01-09 22:45:53,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 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) [2025-01-09 22:45:53,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2025-01-09 22:45:53,500 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2025-01-09 22:45:53,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:45:53,500 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2025-01-09 22:45:53,500 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:45:53,500 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2025-01-09 22:45:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 22:45:53,500 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:45:53,500 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:45:53,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 22:45:53,503 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:45:53,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:45:53,504 INFO L85 PathProgramCache]: Analyzing trace with hash 570997579, now seen corresponding path program 1 times [2025-01-09 22:45:53,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:45:53,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028363551] [2025-01-09 22:45:53,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:45:53,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:45:53,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 22:45:53,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 22:45:53,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:45:53,514 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:45:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:45:53,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 22:45:53,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028363551] [2025-01-09 22:45:53,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028363551] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:45:53,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758381131] [2025-01-09 22:45:53,587 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:45:53,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:45:53,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:45:53,591 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) [2025-01-09 22:45:53,593 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 [2025-01-09 22:45:53,625 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 22:45:53,636 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 22:45:53,636 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:45:53,636 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:45:53,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 22:45:53,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:45:53,671 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:45:53,671 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:45:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:45:53,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758381131] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:45:53,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-09 22:45:53,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2025-01-09 22:45:53,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291908211] [2025-01-09 22:45:53,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-09 22:45:53,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-01-09 22:45:53,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 22:45:53,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-01-09 22:45:53,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:45:53,731 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:45:53,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:45:53,762 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2025-01-09 22:45:53,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-09 22:45:53,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2025-01-09 22:45:53,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:45:53,763 INFO L225 Difference]: With dead ends: 21 [2025-01-09 22:45:53,763 INFO L226 Difference]: Without dead ends: 21 [2025-01-09 22:45:53,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2025-01-09 22:45:53,764 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 22:45:53,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 37 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 22:45:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-01-09 22:45:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-01-09 22:45:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 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) [2025-01-09 22:45:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2025-01-09 22:45:53,765 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 23 [2025-01-09 22:45:53,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:45:53,765 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2025-01-09 22:45:53,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:45:53,765 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2025-01-09 22:45:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 22:45:53,766 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:45:53,766 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:45:53,772 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 [2025-01-09 22:45:53,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:45:53,971 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:45:53,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:45:53,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1027138706, now seen corresponding path program 1 times [2025-01-09 22:45:53,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:45:53,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393196082] [2025-01-09 22:45:53,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:45:53,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:45:53,977 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 22:45:53,982 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 22:45:53,983 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:45:53,983 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 22:45:53,983 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 22:45:53,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 22:45:53,992 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 22:45:53,992 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:45:53,992 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 22:45:54,010 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 22:45:54,011 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 22:45:54,011 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2025-01-09 22:45:54,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2025-01-09 22:45:54,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2025-01-09 22:45:54,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2025-01-09 22:45:54,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2025-01-09 22:45:54,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2025-01-09 22:45:54,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2025-01-09 22:45:54,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2025-01-09 22:45:54,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2025-01-09 22:45:54,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 12 remaining) [2025-01-09 22:45:54,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 12 remaining) [2025-01-09 22:45:54,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (0 of 12 remaining) [2025-01-09 22:45:54,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-01-09 22:45:54,016 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-01-09 22:45:54,027 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 22:45:54,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:45:54 BoogieIcfgContainer [2025-01-09 22:45:54,030 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 22:45:54,030 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 22:45:54,031 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 22:45:54,031 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 22:45:54,031 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:45:46" (3/4) ... [2025-01-09 22:45:54,033 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-09 22:45:54,033 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 22:45:54,034 INFO L158 Benchmark]: Toolchain (without parser) took 7702.95ms. Allocated memory is still 167.8MB. Free memory was 132.7MB in the beginning and 103.0MB in the end (delta: 29.7MB). Peak memory consumption was 30.2MB. Max. memory is 16.1GB. [2025-01-09 22:45:54,034 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:45:54,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.51ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 116.5MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:45:54,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.72ms. Allocated memory is still 167.8MB. Free memory was 116.5MB in the beginning and 115.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:45:54,035 INFO L158 Benchmark]: Boogie Preprocessor took 29.75ms. Allocated memory is still 167.8MB. Free memory was 115.2MB in the beginning and 113.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:45:54,035 INFO L158 Benchmark]: RCFGBuilder took 242.01ms. Allocated memory is still 167.8MB. Free memory was 113.8MB in the beginning and 101.7MB in the end (delta: 12.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:45:54,035 INFO L158 Benchmark]: TraceAbstraction took 7133.10ms. Allocated memory is still 167.8MB. Free memory was 101.2MB in the beginning and 103.0MB in the end (delta: -1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:45:54,035 INFO L158 Benchmark]: Witness Printer took 2.92ms. Allocated memory is still 167.8MB. Free memory was 103.0MB in the beginning and 103.0MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:45:54,036 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 126.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 265.51ms. Allocated memory is still 167.8MB. Free memory was 132.2MB in the beginning and 116.5MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.72ms. Allocated memory is still 167.8MB. Free memory was 116.5MB in the beginning and 115.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.75ms. Allocated memory is still 167.8MB. Free memory was 115.2MB in the beginning and 113.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 242.01ms. Allocated memory is still 167.8MB. Free memory was 113.8MB in the beginning and 101.7MB in the end (delta: 12.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7133.10ms. Allocated memory is still 167.8MB. Free memory was 101.2MB in the beginning and 103.0MB in the end (delta: -1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.92ms. Allocated memory is still 167.8MB. Free memory was 103.0MB in the beginning and 103.0MB in the end (delta: 50.8kB). There was no memory consumed. 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 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={-2:0}] [L566] return temp; VAL [\result={-2:0}] [L569] RET, EXPR alloc_node() [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={-1:0}] [L566] return temp; VAL [\result={-1:0}] [L570] RET, EXPR alloc_node() VAL [s={-2:0}] [L570] s->next = alloc_node() [L571] EXPR s->next [L571] *s = *(s->next) [L571] *s = *(s->next) [L572] free(s) [L572] free(s) [L572] free(s) [L573] return 0; VAL [\result=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 7.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 301 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 28 IncrementalHoareTripleChecker+Unchecked, 230 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 458 IncrementalHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 71 mSDtfsCounter, 458 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 80 SyntacticMatches, 8 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 173 NumberOfCodeBlocks, 173 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 177 ConstructedInterpolants, 13 QuantifiedInterpolants, 1050 SizeOfPredicates, 2 NumberOfNonLiveVariables, 239 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 18/50 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-09 22:45:54,056 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/list-ext3-properties/sll_shallow_copy-2.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:45:55,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:45:56,011 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2025-01-09 22:45:56,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:45:56,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:45:56,037 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:45:56,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:45:56,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:45:56,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:45:56,040 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:45:56,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:45:56,041 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:45:56,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:45:56,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:45:56,041 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:45:56,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:45:56,042 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:45:56,043 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:45:56,043 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:45:56,043 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:45:56,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:45:56,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:45:56,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:45:56,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:45:56,043 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:45:56,043 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:45:56,043 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:45:56,043 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:45:56,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:45:56,044 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:45:56,044 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:45:56,044 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-09 22:45:56,044 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-09 22:45:56,044 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:45:56,044 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:45:56,044 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:45:56,044 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:45:56,044 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2025-01-09 22:45:56,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:45:56,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:45:56,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:45:56,284 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:45:56,285 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:45:56,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2025-01-09 22:45:57,452 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/39d0477d7/9a078b1c48fb48308c07bd6c2b059a85/FLAG7e3abf0a5 [2025-01-09 22:45:57,687 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:45:57,688 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2025-01-09 22:45:57,705 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/39d0477d7/9a078b1c48fb48308c07bd6c2b059a85/FLAG7e3abf0a5 [2025-01-09 22:45:57,717 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/39d0477d7/9a078b1c48fb48308c07bd6c2b059a85 [2025-01-09 22:45:57,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:45:57,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:45:57,725 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:45:57,725 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:45:57,730 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:45:57,731 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:45:57" (1/1) ... [2025-01-09 22:45:57,731 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fdec0f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:57, skipping insertion in model container [2025-01-09 22:45:57,732 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:45:57" (1/1) ... [2025-01-09 22:45:57,757 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:45:57,980 WARN L1100 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2025-01-09 22:45:57,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:45:58,003 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 22:45:58,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:45:58,064 INFO L204 MainTranslator]: Completed translation [2025-01-09 22:45:58,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58 WrapperNode [2025-01-09 22:45:58,066 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:45:58,067 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 22:45:58,067 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 22:45:58,067 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 22:45:58,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,085 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,099 INFO L138 Inliner]: procedures = 115, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 32 [2025-01-09 22:45:58,099 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 22:45:58,100 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 22:45:58,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 22:45:58,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 22:45:58,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,110 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,122 INFO L175 MemorySlicer]: Split 4 memory accesses to 1 slices as follows [4]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2025-01-09 22:45:58,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,129 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,134 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,138 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,138 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,139 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 22:45:58,143 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 22:45:58,143 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 22:45:58,143 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 22:45:58,144 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (1/1) ... [2025-01-09 22:45:58,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:45:58,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:45:58,174 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) [2025-01-09 22:45:58,179 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 [2025-01-09 22:45:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2025-01-09 22:45:58,194 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2025-01-09 22:45:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 22:45:58,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 22:45:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 22:45:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 22:45:58,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 22:45:58,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 22:45:58,276 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 22:45:58,277 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 22:45:58,431 INFO L? ?]: Removed 33 outVars from TransFormulas that were not future-live. [2025-01-09 22:45:58,432 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 22:45:58,441 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 22:45:58,441 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 22:45:58,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:45:58 BoogieIcfgContainer [2025-01-09 22:45:58,442 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 22:45:58,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 22:45:58,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 22:45:58,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 22:45:58,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:45:57" (1/3) ... [2025-01-09 22:45:58,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e70b414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:45:58, skipping insertion in model container [2025-01-09 22:45:58,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:45:58" (2/3) ... [2025-01-09 22:45:58,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e70b414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:45:58, skipping insertion in model container [2025-01-09 22:45:58,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:45:58" (3/3) ... [2025-01-09 22:45:58,452 INFO L128 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2025-01-09 22:45:58,462 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 22:45:58,464 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll_shallow_copy-2.i that has 2 procedures, 35 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2025-01-09 22:45:58,493 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 22:45:58,500 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;@491ab5ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 22:45:58,502 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2025-01-09 22:45:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 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) [2025-01-09 22:45:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-09 22:45:58,509 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:45:58,509 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:45:58,510 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:45:58,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:45:58,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625018, now seen corresponding path program 1 times [2025-01-09 22:45:58,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:45:58,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [842347828] [2025-01-09 22:45:58,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:45:58,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:45:58,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:45:58,522 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) [2025-01-09 22:45:58,523 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 [2025-01-09 22:45:58,579 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 22:45:58,587 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 22:45:58,588 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:45:58,588 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:45:58,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-01-09 22:45:58,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:45:58,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:45:58,847 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2025-01-09 22:45:58,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2025-01-09 22:45:58,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:45:58,860 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:46:07,880 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:46:07,882 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:46:07,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842347828] [2025-01-09 22:46:07,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842347828] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:46:07,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:46:07,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2025-01-09 22:46:07,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460186744] [2025-01-09 22:46:07,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:46:07,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 22:46:07,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:46:07,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 22:46:07,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2025-01-09 22:46:07,906 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 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 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:46:08,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:08,187 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2025-01-09 22:46:08,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 22:46:08,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2025-01-09 22:46:08,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:08,192 INFO L225 Difference]: With dead ends: 31 [2025-01-09 22:46:08,192 INFO L226 Difference]: Without dead ends: 28 [2025-01-09 22:46:08,193 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2025-01-09 22:46:08,195 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:08,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 65 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-09 22:46:08,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2025-01-09 22:46:08,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2025-01-09 22:46:08,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 24 states have internal predecessors, (24), 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) [2025-01-09 22:46:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2025-01-09 22:46:08,224 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 16 [2025-01-09 22:46:08,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:08,226 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2025-01-09 22:46:08,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:46:08,226 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2025-01-09 22:46:08,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-01-09 22:46:08,227 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:08,227 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:08,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 22:46:08,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:08,432 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:46:08,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:08,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625017, now seen corresponding path program 1 times [2025-01-09 22:46:08,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:46:08,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1387022620] [2025-01-09 22:46:08,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:08,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:08,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:46:08,436 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) [2025-01-09 22:46:08,437 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 [2025-01-09 22:46:08,478 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 22:46:08,485 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 22:46:08,485 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:08,485 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:08,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 22:46:08,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:46:08,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:46:08,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:46:08,687 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alloc_node_~temp~0#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |alloc_node_~temp~0#1.base|)) (= (store |c_old(#length)| |alloc_node_~temp~0#1.base| (select |c_#length| |alloc_node_~temp~0#1.base|)) |c_#length|))) is different from true [2025-01-09 22:46:08,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:46:08,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:46:08,762 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:46:08,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:46:08,777 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2025-01-09 22:46:08,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:46:08,952 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:46:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387022620] [2025-01-09 22:46:08,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387022620] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:46:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [560116263] [2025-01-09 22:46:08,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:08,952 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2025-01-09 22:46:08,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 [2025-01-09 22:46:08,976 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2025-01-09 22:46:08,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2025-01-09 22:46:09,017 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-01-09 22:46:09,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-01-09 22:46:09,035 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:09,035 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:09,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-01-09 22:46:09,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:46:09,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:46:09,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:46:09,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2025-01-09 22:46:09,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2025-01-09 22:46:09,202 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2025-01-09 22:46:09,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2025-01-09 22:46:09,204 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2025-01-09 22:46:09,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:46:09,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [560116263] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 22:46:09,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:46:09,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2025-01-09 22:46:09,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156630069] [2025-01-09 22:46:09,353 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:46:09,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-01-09 22:46:09,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:46:09,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-01-09 22:46:09,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=70, Unknown=1, NotChecked=16, Total=110 [2025-01-09 22:46:09,354 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:46:09,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:09,540 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2025-01-09 22:46:09,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-01-09 22:46:09,541 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2025-01-09 22:46:09,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:09,542 INFO L225 Difference]: With dead ends: 24 [2025-01-09 22:46:09,542 INFO L226 Difference]: Without dead ends: 24 [2025-01-09 22:46:09,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=106, Unknown=1, NotChecked=20, Total=156 [2025-01-09 22:46:09,543 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 15 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:09,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 38 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2025-01-09 22:46:09,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-01-09 22:46:09,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-01-09 22:46:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 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) [2025-01-09 22:46:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2025-01-09 22:46:09,547 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2025-01-09 22:46:09,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:09,548 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2025-01-09 22:46:09,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-09 22:46:09,548 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2025-01-09 22:46:09,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 22:46:09,548 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:09,548 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:09,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-09 22:46:09,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2025-01-09 22:46:09,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2025-01-09 22:46:09,949 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:46:09,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:09,949 INFO L85 PathProgramCache]: Analyzing trace with hash 78968552, now seen corresponding path program 1 times [2025-01-09 22:46:09,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:46:09,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [797491585] [2025-01-09 22:46:09,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:09,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:09,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:46:09,953 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) [2025-01-09 22:46:09,955 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 [2025-01-09 22:46:09,994 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 22:46:10,006 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 22:46:10,006 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:10,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:10,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-01-09 22:46:10,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:46:10,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2025-01-09 22:46:10,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 22:46:10,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2025-01-09 22:46:10,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:46:10,085 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:46:10,085 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:46:10,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797491585] [2025-01-09 22:46:10,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797491585] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:46:10,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:46:10,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 22:46:10,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244437837] [2025-01-09 22:46:10,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:46:10,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:46:10,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:46:10,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:46:10,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 22:46:10,087 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:46:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:10,195 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2025-01-09 22:46:10,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:46:10,195 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2025-01-09 22:46:10,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:10,196 INFO L225 Difference]: With dead ends: 23 [2025-01-09 22:46:10,196 INFO L226 Difference]: Without dead ends: 23 [2025-01-09 22:46:10,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 22:46:10,196 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:10,197 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 53 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:46:10,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-01-09 22:46:10,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-01-09 22:46:10,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 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) [2025-01-09 22:46:10,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2025-01-09 22:46:10,199 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2025-01-09 22:46:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:10,199 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2025-01-09 22:46:10,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:46:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2025-01-09 22:46:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2025-01-09 22:46:10,200 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:10,200 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:10,206 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-01-09 22:46:10,404 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 [2025-01-09 22:46:10,404 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:46:10,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:10,404 INFO L85 PathProgramCache]: Analyzing trace with hash 78968553, now seen corresponding path program 1 times [2025-01-09 22:46:10,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:46:10,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753641087] [2025-01-09 22:46:10,405 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:10,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:10,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:46:10,408 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) [2025-01-09 22:46:10,409 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 [2025-01-09 22:46:10,443 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-01-09 22:46:10,454 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-01-09 22:46:10,454 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:10,454 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:10,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-09 22:46:10,458 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:46:10,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2025-01-09 22:46:10,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-01-09 22:46:10,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2025-01-09 22:46:10,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2025-01-09 22:46:10,560 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:46:10,560 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 22:46:10,560 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:46:10,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753641087] [2025-01-09 22:46:10,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753641087] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 22:46:10,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 22:46:10,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-01-09 22:46:10,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946764040] [2025-01-09 22:46:10,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 22:46:10,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:46:10,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:46:10,561 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:46:10,561 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-01-09 22:46:10,562 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:46:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:10,646 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2025-01-09 22:46:10,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:46:10,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2025-01-09 22:46:10,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:10,647 INFO L225 Difference]: With dead ends: 22 [2025-01-09 22:46:10,647 INFO L226 Difference]: Without dead ends: 22 [2025-01-09 22:46:10,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-01-09 22:46:10,648 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:10,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 69 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:46:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2025-01-09 22:46:10,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2025-01-09 22:46:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 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) [2025-01-09 22:46:10,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2025-01-09 22:46:10,650 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2025-01-09 22:46:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:10,650 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2025-01-09 22:46:10,650 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2025-01-09 22:46:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2025-01-09 22:46:10,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2025-01-09 22:46:10,652 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:10,652 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:10,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-01-09 22:46:10,856 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 [2025-01-09 22:46:10,856 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:46:10,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:10,856 INFO L85 PathProgramCache]: Analyzing trace with hash 570997579, now seen corresponding path program 1 times [2025-01-09 22:46:10,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:46:10,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085326874] [2025-01-09 22:46:10,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:10,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:10,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:46:10,858 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) [2025-01-09 22:46:10,859 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 [2025-01-09 22:46:10,897 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 23 statements into 1 equivalence classes. [2025-01-09 22:46:10,910 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 23 of 23 statements. [2025-01-09 22:46:10,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:10,910 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 22:46:10,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-01-09 22:46:10,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 22:46:10,980 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 22:46:10,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-09 22:46:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-09 22:46:11,025 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 22:46:11,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085326874] [2025-01-09 22:46:11,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085326874] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-09 22:46:11,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-01-09 22:46:11,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2025-01-09 22:46:11,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349043441] [2025-01-09 22:46:11,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-01-09 22:46:11,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-09 22:46:11,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 22:46:11,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-09 22:46:11,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-01-09 22:46:11,026 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:46:11,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 22:46:11,099 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2025-01-09 22:46:11,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-01-09 22:46:11,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2025-01-09 22:46:11,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 22:46:11,100 INFO L225 Difference]: With dead ends: 21 [2025-01-09 22:46:11,100 INFO L226 Difference]: Without dead ends: 21 [2025-01-09 22:46:11,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2025-01-09 22:46:11,101 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 22:46:11,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 32 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 22:46:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-01-09 22:46:11,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2025-01-09 22:46:11,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 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) [2025-01-09 22:46:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2025-01-09 22:46:11,103 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 23 [2025-01-09 22:46:11,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 22:46:11,103 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2025-01-09 22:46:11,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2025-01-09 22:46:11,103 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2025-01-09 22:46:11,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2025-01-09 22:46:11,103 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:46:11,103 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 22:46:11,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-01-09 22:46:11,304 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 [2025-01-09 22:46:11,304 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2025-01-09 22:46:11,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:46:11,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1027138706, now seen corresponding path program 1 times [2025-01-09 22:46:11,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 22:46:11,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759570537] [2025-01-09 22:46:11,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:46:11,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:11,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:46:11,307 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) [2025-01-09 22:46:11,308 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 [2025-01-09 22:46:11,340 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 22:46:11,355 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 22:46:11,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:11,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 22:46:11,356 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 22:46:11,363 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-01-09 22:46:11,373 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-01-09 22:46:11,373 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:46:11,373 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 22:46:11,393 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-01-09 22:46:11,394 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 22:46:11,394 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2025-01-09 22:46:11,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2025-01-09 22:46:11,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2025-01-09 22:46:11,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2025-01-09 22:46:11,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2025-01-09 22:46:11,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2025-01-09 22:46:11,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2025-01-09 22:46:11,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2025-01-09 22:46:11,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2025-01-09 22:46:11,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 12 remaining) [2025-01-09 22:46:11,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 12 remaining) [2025-01-09 22:46:11,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (0 of 12 remaining) [2025-01-09 22:46:11,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-01-09 22:46:11,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 22:46:11,606 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-01-09 22:46:11,618 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 22:46:11,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:46:11 BoogieIcfgContainer [2025-01-09 22:46:11,619 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 22:46:11,620 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 22:46:11,620 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 22:46:11,620 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 22:46:11,621 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:45:58" (3/4) ... [2025-01-09 22:46:11,622 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-09 22:46:11,623 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 22:46:11,623 INFO L158 Benchmark]: Toolchain (without parser) took 13901.84ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 39.8MB in the end (delta: 51.8MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. [2025-01-09 22:46:11,623 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:46:11,623 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.37ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 74.8MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:46:11,623 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.03ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 73.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:46:11,624 INFO L158 Benchmark]: Boogie Preprocessor took 39.13ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 71.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:46:11,624 INFO L158 Benchmark]: RCFGBuilder took 298.85ms. Allocated memory is still 117.4MB. Free memory was 71.7MB in the beginning and 58.9MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:46:11,624 INFO L158 Benchmark]: TraceAbstraction took 13175.76ms. Allocated memory is still 117.4MB. Free memory was 58.4MB in the beginning and 39.8MB in the end (delta: 18.6MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. [2025-01-09 22:46:11,624 INFO L158 Benchmark]: Witness Printer took 2.70ms. Allocated memory is still 117.4MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:46:11,625 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 83.9MB. Free memory is still 61.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.37ms. Allocated memory is still 117.4MB. Free memory was 91.4MB in the beginning and 74.8MB in the end (delta: 16.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.03ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 73.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.13ms. Allocated memory is still 117.4MB. Free memory was 73.3MB in the beginning and 71.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 298.85ms. Allocated memory is still 117.4MB. Free memory was 71.7MB in the beginning and 58.9MB in the end (delta: 12.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 13175.76ms. Allocated memory is still 117.4MB. Free memory was 58.4MB in the beginning and 39.8MB in the end (delta: 18.6MB). Peak memory consumption was 21.3MB. Max. memory is 16.1GB. * Witness Printer took 2.70ms. Allocated memory is still 117.4MB. Free memory is still 39.8MB. There was no memory consumed. 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 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={2:0}] [L566] return temp; VAL [\result={2:0}] [L569] RET, EXPR alloc_node() [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={64:0}] [L566] return temp; VAL [\result={64:0}] [L570] RET, EXPR alloc_node() VAL [s={2:0}] [L570] s->next = alloc_node() [L571] EXPR s->next [L571] *s = *(s->next) [L571] *s = *(s->next) [L572] free(s) [L572] free(s) [L572] free(s) [L573] return 0; VAL [\result=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 13.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 39 mSDsluCounter, 257 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 20 IncrementalHoareTripleChecker+Unchecked, 187 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 432 IncrementalHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 70 mSDtfsCounter, 432 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 110 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.4s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 140 ConstructedInterpolants, 17 QuantifiedInterpolants, 889 SizeOfPredicates, 10 NumberOfNonLiveVariables, 351 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 16/40 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-09 22:46:11,644 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: UNKNOWN: Overapproximated counterexample