./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loops/sum_array-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/loops/sum_array-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 84226515a723f10f2a919f265c45890771224ac18b5dd5f986441c53175929f5 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-12 13:45:16,446 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-12 13:45:16,505 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-12 13:45:16,510 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-12 13:45:16,511 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-12 13:45:16,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-12 13:45:16,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-12 13:45:16,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-12 13:45:16,537 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-12 13:45:16,538 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-12 13:45:16,538 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-12 13:45:16,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-12 13:45:16,539 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-12 13:45:16,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-12 13:45:16,541 INFO L153 SettingsManager]: * Use SBE=true [2024-11-12 13:45:16,541 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-12 13:45:16,541 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-12 13:45:16,541 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-12 13:45:16,542 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-12 13:45:16,542 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-12 13:45:16,542 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-12 13:45:16,545 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-12 13:45:16,545 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-12 13:45:16,545 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-12 13:45:16,546 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-12 13:45:16,546 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-12 13:45:16,546 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-12 13:45:16,546 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-12 13:45:16,546 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-12 13:45:16,546 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-12 13:45:16,546 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-12 13:45:16,547 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-12 13:45:16,547 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-12 13:45:16,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 13:45:16,547 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-12 13:45:16,547 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-12 13:45:16,547 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-12 13:45:16,548 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-12 13:45:16,548 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-12 13:45:16,548 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-12 13:45:16,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-12 13:45:16,550 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-12 13:45:16,550 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84226515a723f10f2a919f265c45890771224ac18b5dd5f986441c53175929f5 [2024-11-12 13:45:16,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-12 13:45:16,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-12 13:45:16,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-12 13:45:16,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-12 13:45:16,793 INFO L274 PluginConnector]: CDTParser initialized [2024-11-12 13:45:16,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/sum_array-2.i [2024-11-12 13:45:18,242 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-12 13:45:18,389 INFO L384 CDTParser]: Found 1 translation units. [2024-11-12 13:45:18,390 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/sum_array-2.i [2024-11-12 13:45:18,396 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3505ddde3/a8170d0331664d01bbb933045ea07ec1/FLAG12e12becb [2024-11-12 13:45:18,408 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3505ddde3/a8170d0331664d01bbb933045ea07ec1 [2024-11-12 13:45:18,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-12 13:45:18,412 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-12 13:45:18,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-12 13:45:18,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-12 13:45:18,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-12 13:45:18,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1588f18f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18, skipping insertion in model container [2024-11-12 13:45:18,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,440 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-12 13:45:18,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 13:45:18,609 INFO L200 MainTranslator]: Completed pre-run [2024-11-12 13:45:18,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-12 13:45:18,635 INFO L204 MainTranslator]: Completed translation [2024-11-12 13:45:18,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18 WrapperNode [2024-11-12 13:45:18,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-12 13:45:18,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-12 13:45:18,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-12 13:45:18,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-12 13:45:18,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,666 INFO L138 Inliner]: procedures = 18, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 100 [2024-11-12 13:45:18,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-12 13:45:18,670 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-12 13:45:18,670 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-12 13:45:18,670 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-12 13:45:18,678 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,702 INFO L175 MemorySlicer]: Split 12 memory accesses to 4 slices as follows [2, 4, 4, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-12 13:45:18,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,707 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,720 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,724 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,725 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,748 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-12 13:45:18,748 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-12 13:45:18,749 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-12 13:45:18,749 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-12 13:45:18,749 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (1/1) ... [2024-11-12 13:45:18,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-12 13:45:18,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-12 13:45:18,808 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-12 13:45:18,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-12 13:45:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-12 13:45:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-12 13:45:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-12 13:45:18,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-12 13:45:18,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-12 13:45:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-12 13:45:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-12 13:45:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-12 13:45:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-12 13:45:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-12 13:45:18,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-12 13:45:18,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-12 13:45:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-12 13:45:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-12 13:45:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-12 13:45:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-12 13:45:18,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-12 13:45:18,940 INFO L238 CfgBuilder]: Building ICFG [2024-11-12 13:45:18,941 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-12 13:45:19,187 INFO L? ?]: Removed 59 outVars from TransFormulas that were not future-live. [2024-11-12 13:45:19,187 INFO L287 CfgBuilder]: Performing block encoding [2024-11-12 13:45:19,201 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-12 13:45:19,201 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-12 13:45:19,202 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:45:19 BoogieIcfgContainer [2024-11-12 13:45:19,202 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-12 13:45:19,204 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-12 13:45:19,204 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-12 13:45:19,206 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-12 13:45:19,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 01:45:18" (1/3) ... [2024-11-12 13:45:19,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275b9773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:45:19, skipping insertion in model container [2024-11-12 13:45:19,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 01:45:18" (2/3) ... [2024-11-12 13:45:19,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275b9773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 01:45:19, skipping insertion in model container [2024-11-12 13:45:19,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:45:19" (3/3) ... [2024-11-12 13:45:19,209 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array-2.i [2024-11-12 13:45:19,223 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-12 13:45:19,224 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-11-12 13:45:19,268 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-12 13:45:19,276 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;@192b00c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-12 13:45:19,276 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-12 13:45:19,280 INFO L276 IsEmpty]: Start isEmpty. Operand has 60 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 59 states have internal predecessors, (71), 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) [2024-11-12 13:45:19,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-12 13:45:19,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:45:19,284 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-12 13:45:19,285 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-12 13:45:19,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:45:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2024-11-12 13:45:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:45:19,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866593572] [2024-11-12 13:45:19,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:45:19,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:45:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-12 13:45:19,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-12 13:45:19,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-12 13:45:19,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866593572] [2024-11-12 13:45:19,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866593572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-12 13:45:19,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-12 13:45:19,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-12 13:45:19,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374245710] [2024-11-12 13:45:19,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-12 13:45:19,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-12 13:45:19,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-12 13:45:19,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-12 13:45:19,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:45:19,607 INFO L87 Difference]: Start difference. First operand has 60 states, 37 states have (on average 1.9189189189189189) internal successors, (71), 59 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:45:19,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-12 13:45:19,669 INFO L93 Difference]: Finished difference Result 55 states and 60 transitions. [2024-11-12 13:45:19,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-12 13:45:19,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-12 13:45:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-12 13:45:19,678 INFO L225 Difference]: With dead ends: 55 [2024-11-12 13:45:19,679 INFO L226 Difference]: Without dead ends: 53 [2024-11-12 13:45:19,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-12 13:45:19,682 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 47 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-12 13:45:19,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 38 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-12 13:45:19,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-12 13:45:19,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-12 13:45:19,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 52 states have internal predecessors, (58), 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) [2024-11-12 13:45:19,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2024-11-12 13:45:19,704 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 4 [2024-11-12 13:45:19,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-12 13:45:19,705 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2024-11-12 13:45:19,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-12 13:45:19,705 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2024-11-12 13:45:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-12 13:45:19,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-12 13:45:19,705 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-12 13:45:19,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-12 13:45:19,706 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2024-11-12 13:45:19,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-12 13:45:19,706 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2024-11-12 13:45:19,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-12 13:45:19,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842510009] [2024-11-12 13:45:19,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-12 13:45:19,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-12 13:45:19,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 13:45:19,732 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-12 13:45:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-12 13:45:19,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-12 13:45:19,757 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-12 13:45:19,760 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 22 remaining) [2024-11-12 13:45:19,761 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2024-11-12 13:45:19,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2024-11-12 13:45:19,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2024-11-12 13:45:19,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2024-11-12 13:45:19,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2024-11-12 13:45:19,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2024-11-12 13:45:19,762 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2024-11-12 13:45:19,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2024-11-12 13:45:19,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2024-11-12 13:45:19,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2024-11-12 13:45:19,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2024-11-12 13:45:19,763 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2024-11-12 13:45:19,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2024-11-12 13:45:19,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2024-11-12 13:45:19,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2024-11-12 13:45:19,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 22 remaining) [2024-11-12 13:45:19,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 22 remaining) [2024-11-12 13:45:19,764 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 22 remaining) [2024-11-12 13:45:19,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 22 remaining) [2024-11-12 13:45:19,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (1 of 22 remaining) [2024-11-12 13:45:19,765 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK (0 of 22 remaining) [2024-11-12 13:45:19,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-12 13:45:19,767 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-12 13:45:19,778 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-12 13:45:19,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 01:45:19 BoogieIcfgContainer [2024-11-12 13:45:19,781 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-12 13:45:19,781 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-12 13:45:19,781 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-12 13:45:19,782 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-12 13:45:19,782 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 01:45:19" (3/4) ... [2024-11-12 13:45:19,782 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-12 13:45:19,806 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-12 13:45:19,809 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-12 13:45:19,810 INFO L158 Benchmark]: Toolchain (without parser) took 1398.05ms. Allocated memory is still 176.2MB. Free memory was 105.6MB in the beginning and 84.3MB in the end (delta: 21.3MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2024-11-12 13:45:19,810 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory was 131.1MB in the beginning and 131.0MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 13:45:19,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.14ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 92.6MB in the end (delta: 12.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-12 13:45:19,811 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.42ms. Allocated memory is still 176.2MB. Free memory was 92.6MB in the beginning and 90.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 13:45:19,811 INFO L158 Benchmark]: Boogie Preprocessor took 77.78ms. Allocated memory is still 176.2MB. Free memory was 90.7MB in the beginning and 146.1MB in the end (delta: -55.4MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2024-11-12 13:45:19,812 INFO L158 Benchmark]: RCFGBuilder took 453.47ms. Allocated memory is still 176.2MB. Free memory was 146.1MB in the beginning and 126.2MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-11-12 13:45:19,814 INFO L158 Benchmark]: TraceAbstraction took 577.39ms. Allocated memory is still 176.2MB. Free memory was 125.5MB in the beginning and 85.6MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2024-11-12 13:45:19,814 INFO L158 Benchmark]: Witness Printer took 27.84ms. Allocated memory is still 176.2MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-12 13:45:19,816 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory was 131.1MB in the beginning and 131.0MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.14ms. Allocated memory is still 176.2MB. Free memory was 105.4MB in the beginning and 92.6MB in the end (delta: 12.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.42ms. Allocated memory is still 176.2MB. Free memory was 92.6MB in the beginning and 90.7MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 77.78ms. Allocated memory is still 176.2MB. Free memory was 90.7MB in the beginning and 146.1MB in the end (delta: -55.4MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * RCFGBuilder took 453.47ms. Allocated memory is still 176.2MB. Free memory was 146.1MB in the beginning and 126.2MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 577.39ms. Allocated memory is still 176.2MB. Free memory was 125.5MB in the beginning and 85.6MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 27.84ms. Allocated memory is still 176.2MB. Free memory was 85.6MB in the beginning and 84.3MB in the end (delta: 1.3MB). 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 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L27] unsigned int M = __VERIFIER_nondet_uint(); [L28] int A[M], B[M], C[M]; [L29] unsigned int i; [L30] i=0 VAL [A={4:0}, B={3:0}, C={5:0}, M=1073741824, i=0] [L30] COND TRUE i