./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 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/loops/sum_array-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ --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 0.2.3-dev-30e01a7 [2023-11-23 22:39:07,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:39:07,458 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-23 22:39:07,463 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:39:07,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:39:07,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:39:07,519 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:39:07,520 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:39:07,521 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:39:07,527 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:39:07,529 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:39:07,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:39:07,531 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:39:07,533 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:39:07,534 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:39:07,534 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:39:07,535 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:39:07,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:39:07,536 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-23 22:39:07,537 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-23 22:39:07,537 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-23 22:39:07,538 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:39:07,539 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 22:39:07,539 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:39:07,540 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:39:07,540 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:39:07,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:39:07,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:39:07,543 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:39:07,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:39:07,545 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:39:07,546 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:39:07,546 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:39:07,546 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:39:07,547 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:39:07,547 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:39:07,547 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:39:07,548 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:39:07,548 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:39:07,548 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 84226515a723f10f2a919f265c45890771224ac18b5dd5f986441c53175929f5 [2023-11-23 22:39:07,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:39:07,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:39:07,969 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:39:07,971 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:39:07,972 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:39:07,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/loops/sum_array-2.i [2023-11-23 22:39:11,308 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:39:11,597 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:39:11,597 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/sv-benchmarks/c/loops/sum_array-2.i [2023-11-23 22:39:11,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/data/57782c6ca/5ad2547ab7dc449a939ba35887f72261/FLAG4fcceff70 [2023-11-23 22:39:11,633 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/data/57782c6ca/5ad2547ab7dc449a939ba35887f72261 [2023-11-23 22:39:11,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:39:11,642 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:39:11,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:39:11,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:39:11,653 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:39:11,654 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:11,655 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b45b0f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11, skipping insertion in model container [2023-11-23 22:39:11,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:11,688 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:39:11,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:39:11,942 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:39:11,970 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:39:11,989 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:39:11,989 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11 WrapperNode [2023-11-23 22:39:11,989 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:39:11,991 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:39:11,991 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:39:11,991 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:39:11,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:12,008 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:12,039 INFO L138 Inliner]: procedures = 18, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 106 [2023-11-23 22:39:12,039 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:39:12,040 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:39:12,040 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:39:12,041 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:39:12,052 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:12,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:12,056 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:12,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:12,067 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:12,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:12,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:12,076 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:12,079 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:39:12,081 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:39:12,081 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:39:12,081 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:39:12,082 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (1/1) ... [2023-11-23 22:39:12,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:39:12,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:12,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:39:12,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:39:12,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:39:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 22:39:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:39:12,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 22:39:12,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:39:12,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:39:12,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 22:39:12,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:39:12,273 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:39:12,276 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:39:12,736 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:39:12,811 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:39:12,811 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 22:39:12,812 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:12 BoogieIcfgContainer [2023-11-23 22:39:12,812 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:39:12,816 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:39:12,816 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:39:12,820 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:39:12,820 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:39:11" (1/3) ... [2023-11-23 22:39:12,821 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfb2c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:39:12, skipping insertion in model container [2023-11-23 22:39:12,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:11" (2/3) ... [2023-11-23 22:39:12,822 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfb2c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:39:12, skipping insertion in model container [2023-11-23 22:39:12,822 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:12" (3/3) ... [2023-11-23 22:39:12,824 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array-2.i [2023-11-23 22:39:12,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:39:12,847 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-23 22:39:12,903 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:39:12,911 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@61bd40fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:39:12,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-23 22:39:12,917 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 27 states have (on average 2.259259259259259) internal successors, (61), 49 states have internal predecessors, (61), 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) [2023-11-23 22:39:12,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 22:39:12,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:12,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 22:39:12,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 22:39:12,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:12,933 INFO L85 PathProgramCache]: Analyzing trace with hash 157926, now seen corresponding path program 1 times [2023-11-23 22:39:12,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:12,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874915280] [2023-11-23 22:39:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:12,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:13,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:13,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:13,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874915280] [2023-11-23 22:39:13,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874915280] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:13,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:13,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:39:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259755604] [2023-11-23 22:39:13,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:13,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:39:13,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:13,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:39:13,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:39:13,479 INFO L87 Difference]: Start difference. First operand has 50 states, 27 states have (on average 2.259259259259259) internal successors, (61), 49 states have internal predecessors, (61), 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 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-23 22:39:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:13,590 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2023-11-23 22:39:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:39:13,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-23 22:39:13,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:13,602 INFO L225 Difference]: With dead ends: 45 [2023-11-23 22:39:13,603 INFO L226 Difference]: Without dead ends: 44 [2023-11-23 22:39:13,605 INFO L412 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 [2023-11-23 22:39:13,612 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:13,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 21 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:39:13,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-23 22:39:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-23 22:39:13,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.8846153846153846) internal successors, (49), 43 states have internal predecessors, (49), 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) [2023-11-23 22:39:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2023-11-23 22:39:13,667 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 3 [2023-11-23 22:39:13,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:13,667 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2023-11-23 22:39:13,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-23 22:39:13,670 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2023-11-23 22:39:13,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 22:39:13,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:13,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 22:39:13,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:39:13,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-23 22:39:13,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:13,674 INFO L85 PathProgramCache]: Analyzing trace with hash 157927, now seen corresponding path program 1 times [2023-11-23 22:39:13,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:13,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203850921] [2023-11-23 22:39:13,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:13,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:13,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:39:13,818 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:39:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:39:13,895 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:39:13,895 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:39:13,900 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 22 remaining) [2023-11-23 22:39:13,902 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2023-11-23 22:39:13,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2023-11-23 22:39:13,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2023-11-23 22:39:13,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2023-11-23 22:39:13,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2023-11-23 22:39:13,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2023-11-23 22:39:13,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2023-11-23 22:39:13,912 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2023-11-23 22:39:13,913 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2023-11-23 22:39:13,914 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2023-11-23 22:39:13,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2023-11-23 22:39:13,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2023-11-23 22:39:13,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2023-11-23 22:39:13,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2023-11-23 22:39:13,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2023-11-23 22:39:13,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 22 remaining) [2023-11-23 22:39:13,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 22 remaining) [2023-11-23 22:39:13,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 22 remaining) [2023-11-23 22:39:13,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 22 remaining) [2023-11-23 22:39:13,922 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK (1 of 22 remaining) [2023-11-23 22:39:13,923 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK (0 of 22 remaining) [2023-11-23 22:39:13,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:39:13,930 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 22:39:13,935 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:39:13,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:39:13 BoogieIcfgContainer [2023-11-23 22:39:13,963 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:39:13,964 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:39:13,964 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:39:13,965 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:39:13,966 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:12" (3/4) ... [2023-11-23 22:39:13,967 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 22:39:14,017 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b5c5b28-5a1c-4aff-b788-94f7982f52ab/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:39:14,017 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:39:14,018 INFO L158 Benchmark]: Toolchain (without parser) took 2375.95ms. Allocated memory is still 153.1MB. Free memory was 111.0MB in the beginning and 82.2MB in the end (delta: 28.8MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2023-11-23 22:39:14,020 INFO L158 Benchmark]: CDTParser took 0.63ms. Allocated memory is still 109.1MB. Free memory is still 59.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:39:14,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.50ms. Allocated memory is still 153.1MB. Free memory was 110.5MB in the beginning and 99.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 22:39:14,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.79ms. Allocated memory is still 153.1MB. Free memory was 99.9MB in the beginning and 97.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:39:14,024 INFO L158 Benchmark]: Boogie Preprocessor took 39.63ms. Allocated memory is still 153.1MB. Free memory was 97.9MB in the beginning and 96.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:39:14,025 INFO L158 Benchmark]: RCFGBuilder took 731.84ms. Allocated memory is still 153.1MB. Free memory was 96.4MB in the beginning and 123.2MB in the end (delta: -26.9MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2023-11-23 22:39:14,026 INFO L158 Benchmark]: TraceAbstraction took 1147.31ms. Allocated memory is still 153.1MB. Free memory was 122.8MB in the beginning and 83.6MB in the end (delta: 39.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-23 22:39:14,026 INFO L158 Benchmark]: Witness Printer took 53.46ms. Allocated memory is still 153.1MB. Free memory was 83.6MB in the beginning and 82.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:39:14,031 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63ms. Allocated memory is still 109.1MB. Free memory is still 59.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.50ms. Allocated memory is still 153.1MB. Free memory was 110.5MB in the beginning and 99.9MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.79ms. Allocated memory is still 153.1MB. Free memory was 99.9MB in the beginning and 97.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.63ms. Allocated memory is still 153.1MB. Free memory was 97.9MB in the beginning and 96.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 731.84ms. Allocated memory is still 153.1MB. Free memory was 96.4MB in the beginning and 123.2MB in the end (delta: -26.9MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1147.31ms. Allocated memory is still 153.1MB. Free memory was 122.8MB in the beginning and 83.6MB in the end (delta: 39.2MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * Witness Printer took 53.46ms. Allocated memory is still 153.1MB. Free memory was 83.6MB in the beginning and 82.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. 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={5:0}, C={3:0}, M=1073741824, i=0] [L30] COND TRUE i