./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/diff_usafe.c --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/array-memsafety/diff_usafe.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 22:08:11,281 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 22:08:11,338 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-01-09 22:08:11,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 22:08:11,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 22:08:11,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 22:08:11,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 22:08:11,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 22:08:11,369 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 22:08:11,370 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 22:08:11,370 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 22:08:11,370 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 22:08:11,371 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 22:08:11,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 22:08:11,371 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 22:08:11,371 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 22:08:11,371 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 22:08:11,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 22:08:11,372 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 22:08:11,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 22:08:11,372 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-01-09 22:08:11,372 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-01-09 22:08:11,372 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-01-09 22:08:11,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 22:08:11,372 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 22:08:11,372 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-01-09 22:08:11,372 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 22:08:11,372 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 22:08:11,372 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 22:08:11,372 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 22:08:11,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:08:11,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:08:11,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:08:11,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:08:11,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 22:08:11,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 22:08:11,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 22:08:11,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 22:08:11,373 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:08:11,373 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 22:08:11,374 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 22:08:11,374 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 22:08:11,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 22:08:11,374 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 22:08:11,374 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 22:08:11,374 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 22:08:11,374 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 22:08:11,374 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 -> 60b44baec8d5c42666f1f962a9b95cfd7e6c75178322ade094b7a047963f4b64 [2025-01-09 22:08:11,573 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 22:08:11,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 22:08:11,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 22:08:11,582 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 22:08:11,582 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 22:08:11,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/diff_usafe.c [2025-01-09 22:08:12,688 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/72459a7ce/c7113729af6b43b9ad2a09888dc63131/FLAGf298936da [2025-01-09 22:08:12,868 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 22:08:12,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-memsafety/diff_usafe.c [2025-01-09 22:08:12,878 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/72459a7ce/c7113729af6b43b9ad2a09888dc63131/FLAGf298936da [2025-01-09 22:08:13,240 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/72459a7ce/c7113729af6b43b9ad2a09888dc63131 [2025-01-09 22:08:13,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 22:08:13,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 22:08:13,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 22:08:13,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 22:08:13,247 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 22:08:13,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bafcea7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13, skipping insertion in model container [2025-01-09 22:08:13,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,257 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 22:08:13,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:08:13,374 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 22:08:13,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 22:08:13,394 INFO L204 MainTranslator]: Completed translation [2025-01-09 22:08:13,395 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13 WrapperNode [2025-01-09 22:08:13,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 22:08:13,398 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 22:08:13,398 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 22:08:13,398 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 22:08:13,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,407 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,421 INFO L138 Inliner]: procedures = 8, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2025-01-09 22:08:13,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 22:08:13,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 22:08:13,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 22:08:13,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 22:08:13,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,428 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,429 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,440 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0, 0, 0]. The 1 writes are split as follows [0, 1, 0]. [2025-01-09 22:08:13,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,441 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,444 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,447 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,452 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,452 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,453 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,453 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 22:08:13,454 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 22:08:13,454 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 22:08:13,454 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 22:08:13,457 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (1/1) ... [2025-01-09 22:08:13,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 22:08:13,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 22:08:13,489 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 22:08:13,493 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 22:08:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 22:08:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 22:08:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 22:08:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 22:08:13,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 22:08:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 22:08:13,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 22:08:13,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 22:08:13,563 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 22:08:13,564 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 22:08:13,698 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2025-01-09 22:08:13,698 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 22:08:13,706 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 22:08:13,706 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-09 22:08:13,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:08:13 BoogieIcfgContainer [2025-01-09 22:08:13,707 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 22:08:13,709 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 22:08:13,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 22:08:13,713 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 22:08:13,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:08:13" (1/3) ... [2025-01-09 22:08:13,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d34361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:08:13, skipping insertion in model container [2025-01-09 22:08:13,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:08:13" (2/3) ... [2025-01-09 22:08:13,714 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d34361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:08:13, skipping insertion in model container [2025-01-09 22:08:13,714 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:08:13" (3/3) ... [2025-01-09 22:08:13,714 INFO L128 eAbstractionObserver]: Analyzing ICFG diff_usafe.c [2025-01-09 22:08:13,724 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 22:08:13,725 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG diff_usafe.c that has 1 procedures, 25 locations, 1 initial locations, 2 loop locations, and 9 error locations. [2025-01-09 22:08:13,753 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 22:08:13,762 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;@1c64a42c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 22:08:13,762 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-01-09 22:08:13,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 24 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-09 22:08:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2025-01-09 22:08:13,769 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 22:08:13,769 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2025-01-09 22:08:13,770 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 6 more)] === [2025-01-09 22:08:13,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 22:08:13,774 INFO L85 PathProgramCache]: Analyzing trace with hash 28694821, now seen corresponding path program 1 times [2025-01-09 22:08:13,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 22:08:13,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870208018] [2025-01-09 22:08:13,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 22:08:13,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 22:08:13,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-09 22:08:13,846 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-09 22:08:13,847 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:08:13,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 22:08:13,847 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 22:08:13,850 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-01-09 22:08:13,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-01-09 22:08:13,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 22:08:13,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 22:08:13,865 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 22:08:13,871 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 22:08:13,872 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 9 remaining) [2025-01-09 22:08:13,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 9 remaining) [2025-01-09 22:08:13,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 9 remaining) [2025-01-09 22:08:13,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 9 remaining) [2025-01-09 22:08:13,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 9 remaining) [2025-01-09 22:08:13,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 9 remaining) [2025-01-09 22:08:13,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 9 remaining) [2025-01-09 22:08:13,873 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 9 remaining) [2025-01-09 22:08:13,874 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2025-01-09 22:08:13,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 22:08:13,876 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-01-09 22:08:13,896 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 22:08:13,899 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 10:08:13 BoogieIcfgContainer [2025-01-09 22:08:13,900 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 22:08:13,900 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 22:08:13,902 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 22:08:13,902 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 22:08:13,903 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:08:13" (3/4) ... [2025-01-09 22:08:13,904 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-01-09 22:08:13,935 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 4. [2025-01-09 22:08:13,970 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-01-09 22:08:13,971 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-01-09 22:08:13,971 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 22:08:13,971 INFO L158 Benchmark]: Toolchain (without parser) took 728.56ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 79.4MB in the end (delta: 44.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-01-09 22:08:13,972 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:08:13,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 153.32ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 113.1MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 22:08:13,972 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.36ms. Allocated memory is still 167.8MB. Free memory was 113.1MB in the beginning and 111.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:08:13,972 INFO L158 Benchmark]: Boogie Preprocessor took 31.28ms. Allocated memory is still 167.8MB. Free memory was 111.7MB in the beginning and 110.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 22:08:13,973 INFO L158 Benchmark]: RCFGBuilder took 253.66ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 97.9MB in the end (delta: 12.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 22:08:13,973 INFO L158 Benchmark]: TraceAbstraction took 190.33ms. Allocated memory is still 167.8MB. Free memory was 97.2MB in the beginning and 85.1MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 22:08:13,973 INFO L158 Benchmark]: Witness Printer took 70.65ms. Allocated memory is still 167.8MB. Free memory was 85.1MB in the beginning and 79.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-01-09 22:08:13,974 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 201.3MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 153.32ms. Allocated memory is still 167.8MB. Free memory was 123.7MB in the beginning and 113.1MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.36ms. Allocated memory is still 167.8MB. Free memory was 113.1MB in the beginning and 111.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.28ms. Allocated memory is still 167.8MB. Free memory was 111.7MB in the beginning and 110.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 253.66ms. Allocated memory is still 167.8MB. Free memory was 110.3MB in the beginning and 97.9MB in the end (delta: 12.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 190.33ms. Allocated memory is still 167.8MB. Free memory was 97.2MB in the beginning and 85.1MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 70.65ms. Allocated memory is still 167.8MB. Free memory was 85.1MB in the beginning and 79.4MB in the end (delta: 5.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L30] int *A; [L31] int Alen = __VERIFIER_nondet_int(); [L32] int *B; [L33] int Blen = __VERIFIER_nondet_int(); [L34] int *D; [L35] CALL diff(A, Alen, B, Blen, D) [L5] int k = 0; [L6] int i = 0; [L7] int l1 = Alen; [L8] int l2 = Blen; [L9] int found; VAL [A={5:8}, B={7:9}, D={10:4}, i=0, k=0, l1=2, l2=3] [L11] COND TRUE i < l1 [L12] int j = 0; [L13] found = 0 VAL [A={5:8}, B={7:9}, D={10:4}, found=0, i=0, j=0, k=0, l1=2, l2=3] [L14] COND TRUE j < l2 && !found [L15] A[i] - 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: 29]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! [2025-01-09 22:08:13,994 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)