./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-15/array08_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/config/KojakReach.xml -i ../../sv-benchmarks/c/termination-15/array08_alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-64bit-Kojak_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Kojak --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash ea846d0aba06317f1556d20887ae97ba4fe62b0d875c0f978e04ead015c46479 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 16:39:11,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 16:39:11,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 16:39:11,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 16:39:11,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 16:39:11,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 16:39:11,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 16:39:11,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 16:39:11,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 16:39:11,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 16:39:11,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 16:39:11,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 16:39:11,334 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 16:39:11,335 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 16:39:11,336 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 16:39:11,338 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 16:39:11,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 16:39:11,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 16:39:11,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 16:39:11,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 16:39:11,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 16:39:11,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 16:39:11,354 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 16:39:11,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 16:39:11,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 16:39:11,369 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 16:39:11,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 16:39:11,371 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 16:39:11,372 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 16:39:11,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 16:39:11,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 16:39:11,374 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 16:39:11,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 16:39:11,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 16:39:11,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 16:39:11,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 16:39:11,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 16:39:11,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 16:39:11,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 16:39:11,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 16:39:11,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 16:39:11,384 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/config/svcomp-Overflow-64bit-Kojak_Default.epf [2022-11-20 16:39:11,424 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 16:39:11,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 16:39:11,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 16:39:11,427 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ALWAYS [2022-11-20 16:39:11,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 16:39:11,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 16:39:11,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 16:39:11,428 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 16:39:11,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 16:39:11,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 16:39:11,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 16:39:11,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 16:39:11,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 16:39:11,431 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 16:39:11,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 16:39:11,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 16:39:11,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 16:39:11,432 INFO L136 SettingsManager]: Preferences of CodeCheck differ from their defaults: [2022-11-20 16:39:11,432 INFO L138 SettingsManager]: * Timeout in seconds=1000000 [2022-11-20 16:39:11,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 16:39:11,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 16:39:11,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 16:39:11,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 16:39:11,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 16:39:11,434 INFO L138 SettingsManager]: * Trace refinement strategy=PENGUIN [2022-11-20 16:39:11,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 16:39:11,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 16:39:11,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Kojak Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea846d0aba06317f1556d20887ae97ba4fe62b0d875c0f978e04ead015c46479 [2022-11-20 16:39:11,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 16:39:11,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 16:39:11,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 16:39:11,723 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 16:39:11,723 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 16:39:11,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/../../sv-benchmarks/c/termination-15/array08_alloca.i [2022-11-20 16:39:14,815 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 16:39:15,109 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 16:39:15,110 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/sv-benchmarks/c/termination-15/array08_alloca.i [2022-11-20 16:39:15,123 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/data/5234f2f3b/de29627de05148a3b7fe56116251e52d/FLAG86f21df76 [2022-11-20 16:39:15,138 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/data/5234f2f3b/de29627de05148a3b7fe56116251e52d [2022-11-20 16:39:15,141 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 16:39:15,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 16:39:15,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 16:39:15,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 16:39:15,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 16:39:15,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c57baa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15, skipping insertion in model container [2022-11-20 16:39:15,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 16:39:15,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 16:39:15,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 16:39:15,521 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 16:39:15,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 16:39:15,588 INFO L208 MainTranslator]: Completed translation [2022-11-20 16:39:15,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15 WrapperNode [2022-11-20 16:39:15,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 16:39:15,590 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 16:39:15,590 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 16:39:15,590 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 16:39:15,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,631 INFO L138 Inliner]: procedures = 151, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-11-20 16:39:15,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 16:39:15,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 16:39:15,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 16:39:15,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 16:39:15,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,661 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 16:39:15,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 16:39:15,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 16:39:15,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 16:39:15,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:39:15" (1/1) ... [2022-11-20 16:39:15,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 [2022-11-20 16:39:15,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/z3 [2022-11-20 16:39:15,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) [2022-11-20 16:39:15,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:10000 (1)] Waiting until timeout for monitored process [2022-11-20 16:39:15,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 16:39:15,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 16:39:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 16:39:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 16:39:15,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 16:39:15,760 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 16:39:15,864 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 16:39:15,866 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 16:39:16,092 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 16:39:16,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 16:39:16,152 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 16:39:16,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:39:16 BoogieIcfgContainer [2022-11-20 16:39:16,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 16:39:16,156 INFO L113 PluginConnector]: ------------------------CodeCheck---------------------------- [2022-11-20 16:39:16,156 INFO L271 PluginConnector]: Initializing CodeCheck... [2022-11-20 16:39:16,165 INFO L275 PluginConnector]: CodeCheck initialized [2022-11-20 16:39:16,166 INFO L185 PluginConnector]: Executing the observer CodeCheckObserver from plugin CodeCheck for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:39:16" (1/1) ... [2022-11-20 16:39:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 16:39:16,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:16,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 14 states and 16 transitions. [2022-11-20 16:39:16,229 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-11-20 16:39:16,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 16:39:16,232 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:16,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:16,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:16,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 16 states and 21 transitions. [2022-11-20 16:39:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2022-11-20 16:39:16,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 16:39:16,716 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:16,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:16,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:16,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 18 states and 24 transitions. [2022-11-20 16:39:16,966 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 24 transitions. [2022-11-20 16:39:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 16:39:16,969 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:16,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:17,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:17,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 19 states and 27 transitions. [2022-11-20 16:39:17,153 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2022-11-20 16:39:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 16:39:17,153 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:17,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:17,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 23 states and 36 transitions. [2022-11-20 16:39:17,639 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 36 transitions. [2022-11-20 16:39:17,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 16:39:17,640 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:17,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 24 states and 37 transitions. [2022-11-20 16:39:17,933 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 37 transitions. [2022-11-20 16:39:17,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 16:39:17,934 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:17,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:18,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:18,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:18,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 26 states and 42 transitions. [2022-11-20 16:39:18,979 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 42 transitions. [2022-11-20 16:39:18,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 16:39:18,979 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:18,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:20,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:20,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 29 states and 51 transitions. [2022-11-20 16:39:20,263 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 51 transitions. [2022-11-20 16:39:20,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 16:39:20,263 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:20,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:21,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:21,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 33 states and 60 transitions. [2022-11-20 16:39:21,266 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 60 transitions. [2022-11-20 16:39:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 16:39:21,266 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:21,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:21,851 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:22,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 34 states and 62 transitions. [2022-11-20 16:39:22,763 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 62 transitions. [2022-11-20 16:39:22,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 16:39:22,764 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:22,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:23,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 39 states and 76 transitions. [2022-11-20 16:39:25,923 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 76 transitions. [2022-11-20 16:39:25,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 16:39:25,923 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:25,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:25,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 40 states and 78 transitions. [2022-11-20 16:39:28,128 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 78 transitions. [2022-11-20 16:39:28,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 16:39:28,128 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:28,466 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:29,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 44 states and 88 transitions. [2022-11-20 16:39:29,559 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 88 transitions. [2022-11-20 16:39:29,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 16:39:29,560 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:29,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 16:39:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 16:39:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand no size info available [2022-11-20 16:39:31,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 44 states and 87 transitions. [2022-11-20 16:39:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 87 transitions. [2022-11-20 16:39:31,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 16:39:31,467 INFO L422 CodeCheckObserver]: Error Path is FOUND. [2022-11-20 16:39:31,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 16:39:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 16:39:31,487 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 16:39:31,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 16:39:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 16:39:31,563 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 16:39:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 16:39:31,593 WARN L475 CodeCheckObserver]: This program is UNSAFE, Check terminated with 14 iterations. [2022-11-20 16:39:31,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck CFG 20.11 04:39:31 ImpRootNode [2022-11-20 16:39:31,621 INFO L132 PluginConnector]: ------------------------ END CodeCheck---------------------------- [2022-11-20 16:39:31,622 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 16:39:31,622 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 16:39:31,622 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 16:39:31,623 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:39:16" (3/4) ... [2022-11-20 16:39:31,625 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 16:39:31,664 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3cdd6f9d-4078-45d7-989e-0d87573c847c/bin/ukojak-pZX7IvK2PQ/witness.graphml [2022-11-20 16:39:31,664 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 16:39:31,665 INFO L158 Benchmark]: Toolchain (without parser) took 16522.86ms. Allocated memory was 190.8MB in the beginning and 276.8MB in the end (delta: 86.0MB). Free memory was 144.4MB in the beginning and 115.6MB in the end (delta: 28.8MB). Peak memory consumption was 116.0MB. Max. memory is 16.1GB. [2022-11-20 16:39:31,666 INFO L158 Benchmark]: CDTParser took 0.56ms. Allocated memory is still 142.6MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 16:39:31,666 INFO L158 Benchmark]: CACSL2BoogieTranslator took 445.54ms. Allocated memory is still 190.8MB. Free memory was 144.4MB in the beginning and 127.0MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-20 16:39:31,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.75ms. Allocated memory is still 190.8MB. Free memory was 127.0MB in the beginning and 124.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 16:39:31,668 INFO L158 Benchmark]: Boogie Preprocessor took 40.56ms. Allocated memory is still 190.8MB. Free memory was 124.9MB in the beginning and 124.0MB in the end (delta: 920.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 16:39:31,668 INFO L158 Benchmark]: RCFGBuilder took 481.16ms. Allocated memory is still 190.8MB. Free memory was 124.0MB in the beginning and 110.8MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 16:39:31,669 INFO L158 Benchmark]: CodeCheck took 15466.12ms. Allocated memory was 190.8MB in the beginning and 276.8MB in the end (delta: 86.0MB). Free memory was 110.3MB in the beginning and 118.6MB in the end (delta: -8.4MB). Peak memory consumption was 80.3MB. Max. memory is 16.1GB. [2022-11-20 16:39:31,670 INFO L158 Benchmark]: Witness Printer took 42.46ms. Allocated memory is still 276.8MB. Free memory was 117.6MB in the beginning and 115.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 16:39:31,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.codecheck: - StatisticsResult: Ultimate CodeCheck benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 15.4s, OverallIterations: 14, TraceHistogramMax: 0, PathProgramHistogramMax: 0, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 384 SdHoareTripleChecker+Valid, 3.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 309 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 533 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2070 IncrementalHoareTripleChecker+Invalid, 2603 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 533 mSolverCounterUnsat, 22 mSDtfsCounter, 2070 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1179 GetRequests, 940 SyntacticMatches, 49 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16306 ImplicationChecksByTransitivity, 11.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 131 NumberOfCodeBlocks, 131 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 1024 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 0/54 InterpolantCoveringCapability, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - CounterExampleResult [Line: 378]: integer overflow possible integer overflow possible We found a FailurePath: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); VAL [__builtin_alloca(length*sizeof(int))={2:0}, arr={2:0}, length=2] [L369] COND FALSE !(!arr) [L370] i=0 VAL [__builtin_alloca(length*sizeof(int))={2:0}, arr={2:0}, i=0, length=2] [L370] COND TRUE i