java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AbstractInterpretationC.xml -s ../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a5595af [2018-01-31 19:23:01,450 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-31 19:23:01,451 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-31 19:23:01,463 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-31 19:23:01,464 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-31 19:23:01,465 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-31 19:23:01,466 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-31 19:23:01,467 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-31 19:23:01,470 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-31 19:23:01,471 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-31 19:23:01,471 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-31 19:23:01,472 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-31 19:23:01,473 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-31 19:23:01,474 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-31 19:23:01,475 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-31 19:23:01,478 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-31 19:23:01,480 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-31 19:23:01,482 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-31 19:23:01,483 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-31 19:23:01,484 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-31 19:23:01,487 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-31 19:23:01,492 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-31 19:23:01,502 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-31 19:23:01,503 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-31 19:23:01,503 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-31 19:23:01,504 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-31 19:23:01,504 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-31 19:23:01,504 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-31 19:23:01,504 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-31 19:23:01,505 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-31 19:23:01,505 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-31 19:23:01,505 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-31 19:23:01,506 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-31 19:23:01,506 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-31 19:23:01,506 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-31 19:23:01,506 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-31 19:23:01,506 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-31 19:23:01,507 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-31 19:23:01,507 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-31 19:23:01,507 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-31 19:23:01,507 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-31 19:23:01,507 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-31 19:23:01,508 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-31 19:23:01,508 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-31 19:23:01,508 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-31 19:23:01,508 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-31 19:23:01,508 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-31 19:23:01,509 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 19:23:01,509 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-31 19:23:01,509 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-31 19:23:01,509 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-31 19:23:01,509 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-31 19:23:01,510 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-31 19:23:01,510 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-31 19:23:01,510 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-31 19:23:01,510 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-31 19:23:01,510 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-31 19:23:01,511 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-31 19:23:01,511 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-31 19:23:01,545 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-31 19:23:01,558 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-31 19:23:01,562 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-31 19:23:01,564 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-31 19:23:01,564 INFO L276 PluginConnector]: CDTParser initialized [2018-01-31 19:23:01,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-01-31 19:23:01,764 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-31 19:23:01,769 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-31 19:23:01,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-31 19:23:01,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-31 19:23:01,776 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-31 19:23:01,777 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:23:01" (1/1) ... [2018-01-31 19:23:01,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@755bcf4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:23:01, skipping insertion in model container [2018-01-31 19:23:01,780 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 07:23:01" (1/1) ... [2018-01-31 19:23:01,794 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 19:23:01,829 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-31 19:23:01,948 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 19:23:01,965 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-31 19:23:01,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:23:01 WrapperNode [2018-01-31 19:23:01,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-31 19:23:01,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-31 19:23:01,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-31 19:23:01,974 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-31 19:23:01,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:23:01" (1/1) ... [2018-01-31 19:23:01,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:23:01" (1/1) ... [2018-01-31 19:23:01,999 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:23:01" (1/1) ... [2018-01-31 19:23:01,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:23:01" (1/1) ... [2018-01-31 19:23:02,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:23:01" (1/1) ... [2018-01-31 19:23:02,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:23:01" (1/1) ... [2018-01-31 19:23:02,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:23:01" (1/1) ... [2018-01-31 19:23:02,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-31 19:23:02,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-31 19:23:02,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-31 19:23:02,011 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-31 19:23:02,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 07:23:01" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-31 19:23:02,069 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-31 19:23:02,069 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-31 19:23:02,069 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-31 19:23:02,069 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-31 19:23:02,069 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-31 19:23:02,070 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-31 19:23:02,070 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-31 19:23:02,070 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-31 19:23:02,070 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-31 19:23:02,070 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-31 19:23:02,070 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-31 19:23:02,070 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-31 19:23:02,252 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-31 19:23:02,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:23:02 BoogieIcfgContainer [2018-01-31 19:23:02,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-31 19:23:02,253 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-31 19:23:02,253 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-31 19:23:02,253 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-31 19:23:02,254 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 07:23:02" (1/1) ... [2018-01-31 19:23:02,307 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-31 19:25:04,214 INFO L262 AbstractInterpreter]: Some error location(s) were reachable [2018-01-31 19:25:04,228 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-31 19:25:04,231 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-31 19:25:04,232 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-31 19:25:04,232 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-31 19:25:04,237 INFO L271 AbstractInterpreter]: Visited 44 different actions 363 times. Merged at 29 different actions 255 times. Widened at 2 different actions 11 times. Found 31 fixpoints after 7 different actions. Largest state had 29 variables. [2018-01-31 19:25:04,239 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-31 19:25:04,240 INFO L168 Benchmark]: Toolchain (without parser) took 122475.34 ms. Allocated memory was 303.6 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 260.8 MB in the beginning and 975.5 MB in the end (delta: -714.6 MB). Peak memory consumption was 880.2 MB. Max. memory is 5.3 GB. [2018-01-31 19:25:04,240 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 303.6 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-31 19:25:04,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.60 ms. Allocated memory is still 303.6 MB. Free memory was 260.8 MB in the beginning and 250.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-31 19:25:04,241 INFO L168 Benchmark]: Boogie Preprocessor took 37.45 ms. Allocated memory is still 303.6 MB. Free memory was 250.9 MB in the beginning and 248.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-01-31 19:25:04,241 INFO L168 Benchmark]: RCFGBuilder took 241.52 ms. Allocated memory is still 303.6 MB. Free memory was 248.8 MB in the beginning and 232.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-31 19:25:04,241 INFO L168 Benchmark]: Abstract Interpretation took 121986.32 ms. Allocated memory was 303.6 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 232.2 MB in the beginning and 975.5 MB in the end (delta: -743.3 MB). Peak memory consumption was 851.6 MB. Max. memory is 5.3 GB. [2018-01-31 19:25:04,242 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 303.6 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 202.60 ms. Allocated memory is still 303.6 MB. Free memory was 260.8 MB in the beginning and 250.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.45 ms. Allocated memory is still 303.6 MB. Free memory was 250.9 MB in the beginning and 248.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 241.52 ms. Allocated memory is still 303.6 MB. Free memory was 248.8 MB in the beginning and 232.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 121986.32 ms. Allocated memory was 303.6 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 232.2 MB in the beginning and 975.5 MB in the end (delta: -743.3 MB). Peak memory consumption was 851.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 36 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 12 LocStat_NO_SUPPORTING_EQUALITIES : 416 LocStat_NO_SUPPORTING_DISEQUALITIES : 87 LocStat_NO_DISJUNCTIONS : -72 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 48 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 60 TransStat_NO_SUPPORTING_DISEQUALITIES : 15 TransStat_NO_DISJUNCTIONS : 50 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 31.983565 RENAME_VARIABLES(MILLISECONDS) : 11.603228 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 31.932447 PROJECTAWAY(MILLISECONDS) : 28.954727 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.051476 DISJOIN(MILLISECONDS) : 35.659812 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 11.663681 ADD_EQUALITY(MILLISECONDS) : 0.023007 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.007386 #CONJOIN_DISJUNCTIVE : 666 #RENAME_VARIABLES : 1321 #UNFREEZE : 0 #CONJOIN : 738 #PROJECTAWAY : 690 #ADD_WEAK_EQUALITY : 11 #DISJOIN : 128 #RENAME_VARIABLES_DISJUNCTIVE : 1343 #ADD_EQUALITY : 58 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 9 - UnprovableResult [Line: 1]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: abstract domain could reach this error location. Possible FailurePath: - UnprovableResult [Line: 1]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: abstract domain could reach this error location. Possible FailurePath: [L541] int i, j; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L543] length = 1 [L544] int fac = __VERIFIER_nondet_int(); [L545] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L545] fac = 1 [L546] EXPR, FCALL __builtin_alloca (length*sizeof(int)) [L546] int *arr = __builtin_alloca (length*sizeof(int)); [L547] EXPR, FCALL __builtin_alloca (fac*length*sizeof(int)) [L547] int *arr2 = __builtin_alloca (fac*length*sizeof(int)); [L548] COND FALSE !(!arr || !arr2) [L549] i=0 [L549] COND FALSE !(i