./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loops/matrix-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/matrix-2.c -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 1414fc78e8c6ff23892599c2d6eff3c1d8d515ca94035045b938b2c8c402305b --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 12:20:49,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 12:20:49,499 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-03-17 12:20:49,502 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 12:20:49,503 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 12:20:49,527 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 12:20:49,528 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 12:20:49,528 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 12:20:49,528 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 12:20:49,528 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 12:20:49,528 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 12:20:49,528 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 12:20:49,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 12:20:49,529 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 12:20:49,529 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 12:20:49,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 12:20:49,529 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 12:20:49,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 12:20:49,529 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 12:20:49,529 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 12:20:49,529 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-03-17 12:20:49,529 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-03-17 12:20:49,529 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-03-17 12:20:49,529 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 12:20:49,531 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-03-17 12:20:49,531 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 12:20:49,531 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 12:20:49,531 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 12:20:49,531 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 12:20:49,531 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 12:20:49,531 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 12:20:49,531 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 12:20:49,531 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 12:20:49,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 12:20:49,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 12:20:49,532 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 12:20:49,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 12:20:49,532 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 12:20:49,532 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 12:20:49,532 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 12:20:49,532 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 12:20:49,532 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 12:20:49,532 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/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 -> 1414fc78e8c6ff23892599c2d6eff3c1d8d515ca94035045b938b2c8c402305b [2025-03-17 12:20:49,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 12:20:49,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 12:20:49,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 12:20:49,777 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 12:20:49,777 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 12:20:49,778 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/matrix-2.c [2025-03-17 12:20:50,903 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97b9a10e5/6a2652d9d69e426eb2ee0845f3794c79/FLAG4a499a0ae [2025-03-17 12:20:51,148 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 12:20:51,149 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/matrix-2.c [2025-03-17 12:20:51,155 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97b9a10e5/6a2652d9d69e426eb2ee0845f3794c79/FLAG4a499a0ae [2025-03-17 12:20:51,168 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97b9a10e5/6a2652d9d69e426eb2ee0845f3794c79 [2025-03-17 12:20:51,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 12:20:51,172 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 12:20:51,173 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 12:20:51,173 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 12:20:51,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 12:20:51,177 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43e35fb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51, skipping insertion in model container [2025-03-17 12:20:51,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,189 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 12:20:51,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 12:20:51,304 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 12:20:51,318 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 12:20:51,328 INFO L204 MainTranslator]: Completed translation [2025-03-17 12:20:51,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51 WrapperNode [2025-03-17 12:20:51,329 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 12:20:51,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 12:20:51,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 12:20:51,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 12:20:51,336 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,358 INFO L138 Inliner]: procedures = 15, calls = 15, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2025-03-17 12:20:51,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 12:20:51,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 12:20:51,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 12:20:51,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 12:20:51,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,368 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,378 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2025-03-17 12:20:51,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,383 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,388 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,389 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 12:20:51,390 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 12:20:51,390 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 12:20:51,390 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 12:20:51,392 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (1/1) ... [2025-03-17 12:20:51,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 12:20:51,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:20:51,419 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) [2025-03-17 12:20:51,421 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 [2025-03-17 12:20:51,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 12:20:51,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 12:20:51,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-17 12:20:51,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 12:20:51,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-17 12:20:51,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-17 12:20:51,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 12:20:51,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 12:20:51,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-17 12:20:51,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-17 12:20:51,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 12:20:51,489 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 12:20:51,490 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 12:20:51,651 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2025-03-17 12:20:51,651 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 12:20:51,659 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 12:20:51,659 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 12:20:51,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:20:51 BoogieIcfgContainer [2025-03-17 12:20:51,660 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 12:20:51,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 12:20:51,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 12:20:51,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 12:20:51,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 12:20:51" (1/3) ... [2025-03-17 12:20:51,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295ca0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:20:51, skipping insertion in model container [2025-03-17 12:20:51,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 12:20:51" (2/3) ... [2025-03-17 12:20:51,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295ca0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 12:20:51, skipping insertion in model container [2025-03-17 12:20:51,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:20:51" (3/3) ... [2025-03-17 12:20:51,668 INFO L128 eAbstractionObserver]: Analyzing ICFG matrix-2.c [2025-03-17 12:20:51,677 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 12:20:51,679 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG matrix-2.c that has 1 procedures, 30 locations, 1 initial locations, 4 loop locations, and 10 error locations. [2025-03-17 12:20:51,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 12:20:51,710 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;@5b05e66e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 12:20:51,710 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-03-17 12:20:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 29 states have internal predecessors, (35), 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) [2025-03-17 12:20:51,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 12:20:51,720 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:20:51,720 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 12:20:51,722 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2025-03-17 12:20:51,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:20:51,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1938366, now seen corresponding path program 1 times [2025-03-17 12:20:51,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 12:20:51,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209225312] [2025-03-17 12:20:51,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:20:51,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 12:20:51,785 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 12:20:51,801 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 12:20:51,802 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:20:51,802 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 12:20:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 12:20:51,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 12:20:51,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209225312] [2025-03-17 12:20:51,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209225312] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 12:20:51,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 12:20:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 12:20:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674582040] [2025-03-17 12:20:51,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 12:20:51,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 12:20:51,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 12:20:51,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 12:20:51,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 12:20:51,932 INFO L87 Difference]: Start difference. First operand has 30 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 29 states have internal predecessors, (35), 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), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 12:20:51,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-17 12:20:51,977 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2025-03-17 12:20:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 12:20:51,978 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2025-03-17 12:20:51,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-17 12:20:51,982 INFO L225 Difference]: With dead ends: 26 [2025-03-17 12:20:51,982 INFO L226 Difference]: Without dead ends: 24 [2025-03-17 12:20:51,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 12:20:51,985 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-17 12:20:51,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 22 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-17 12:20:51,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-03-17 12:20:52,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-03-17 12:20:52,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 23 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) [2025-03-17 12:20:52,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2025-03-17 12:20:52,004 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 4 [2025-03-17 12:20:52,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-17 12:20:52,005 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2025-03-17 12:20:52,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 12:20:52,005 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2025-03-17 12:20:52,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2025-03-17 12:20:52,005 INFO L210 NwaCegarLoop]: Found error trace [2025-03-17 12:20:52,005 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2025-03-17 12:20:52,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 12:20:52,006 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2025-03-17 12:20:52,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 12:20:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1938367, now seen corresponding path program 1 times [2025-03-17 12:20:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 12:20:52,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070566133] [2025-03-17 12:20:52,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:20:52,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 12:20:52,012 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 12:20:52,038 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 12:20:52,038 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:20:52,039 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-17 12:20:52,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1863627796] [2025-03-17 12:20:52,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 12:20:52,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:20:52,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 12:20:52,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 12:20:52,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 12:20:52,086 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 12:20:52,132 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 12:20:52,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:20:52,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 12:20:52,133 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 12:20:52,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 4 statements into 1 equivalence classes. [2025-03-17 12:20:52,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 4 of 4 statements. [2025-03-17 12:20:52,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 12:20:52,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 12:20:52,158 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 12:20:52,159 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 12:20:52,160 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 10 remaining) [2025-03-17 12:20:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (8 of 10 remaining) [2025-03-17 12:20:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (7 of 10 remaining) [2025-03-17 12:20:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 10 remaining) [2025-03-17 12:20:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 10 remaining) [2025-03-17 12:20:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 10 remaining) [2025-03-17 12:20:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 10 remaining) [2025-03-17 12:20:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 10 remaining) [2025-03-17 12:20:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 10 remaining) [2025-03-17 12:20:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 10 remaining) [2025-03-17 12:20:52,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 12:20:52,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 12:20:52,367 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 12:20:52,379 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 12:20:52,383 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 12:20:52 BoogieIcfgContainer [2025-03-17 12:20:52,383 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 12:20:52,384 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 12:20:52,384 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 12:20:52,384 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 12:20:52,384 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 12:20:51" (3/4) ... [2025-03-17 12:20:52,385 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-17 12:20:52,413 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 3. [2025-03-17 12:20:52,445 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 12:20:52,446 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 12:20:52,446 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 12:20:52,446 INFO L158 Benchmark]: Toolchain (without parser) took 1274.38ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 58.2MB in the end (delta: 64.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-03-17 12:20:52,446 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 12:20:52,447 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.42ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 111.3MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 12:20:52,447 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.94ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 109.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 12:20:52,447 INFO L158 Benchmark]: Boogie Preprocessor took 30.45ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 108.5MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 12:20:52,447 INFO L158 Benchmark]: IcfgBuilder took 269.72ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 92.7MB in the end (delta: 15.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 12:20:52,448 INFO L158 Benchmark]: TraceAbstraction took 721.89ms. Allocated memory is still 167.8MB. Free memory was 92.2MB in the beginning and 63.4MB in the end (delta: 28.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 12:20:52,448 INFO L158 Benchmark]: Witness Printer took 61.98ms. Allocated memory is still 167.8MB. Free memory was 63.4MB in the beginning and 58.2MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 12:20:52,449 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 121.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.42ms. Allocated memory is still 167.8MB. Free memory was 122.3MB in the beginning and 111.3MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.94ms. Allocated memory is still 167.8MB. Free memory was 111.3MB in the beginning and 109.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.45ms. Allocated memory is still 167.8MB. Free memory was 109.9MB in the beginning and 108.5MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 269.72ms. Allocated memory is still 167.8MB. Free memory was 108.5MB in the beginning and 92.7MB in the end (delta: 15.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 721.89ms. Allocated memory is still 167.8MB. Free memory was 92.2MB in the beginning and 63.4MB in the end (delta: 28.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 61.98ms. Allocated memory is still 167.8MB. Free memory was 63.4MB in the beginning and 58.2MB in the end (delta: 5.2MB). 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: [L16] unsigned int N_LIN=__VERIFIER_nondet_uint(); [L17] unsigned int N_COL=__VERIFIER_nondet_uint(); [L18] unsigned int j,k; [L19] int matriz[N_COL][N_LIN], maior; [L21] maior = __VERIFIER_nondet_int() [L22] j=0 VAL [N_COL=5368709120, N_LIN=-1, j=0, maior=-2147483648, matriz={4:0}] [L22] COND TRUE j