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/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/add_last-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 13:54:05,237 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 13:54:05,239 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 13:54:05,254 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 13:54:05,255 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 13:54:05,256 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 13:54:05,257 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 13:54:05,258 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 13:54:05,260 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 13:54:05,261 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 13:54:05,262 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 13:54:05,262 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 13:54:05,263 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 13:54:05,264 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 13:54:05,265 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 13:54:05,268 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 13:54:05,270 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 13:54:05,272 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 13:54:05,273 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 13:54:05,275 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 13:54:05,277 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 13:54:05,283 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf [2018-01-24 13:54:05,292 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 13:54:05,293 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 13:54:05,293 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 13:54:05,294 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 13:54:05,294 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 13:54:05,294 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 13:54:05,294 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 13:54:05,294 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 13:54:05,294 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 13:54:05,295 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 13:54:05,295 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 13:54:05,295 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 13:54:05,295 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 13:54:05,295 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 13:54:05,295 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 13:54:05,295 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 13:54:05,295 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 13:54:05,296 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 13:54:05,296 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 13:54:05,296 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 13:54:05,296 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 13:54:05,296 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 13:54:05,296 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 13:54:05,296 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 13:54:05,297 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 13:54:05,297 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 13:54:05,297 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 13:54:05,297 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 13:54:05,297 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 13:54:05,297 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 13:54:05,298 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 13:54:05,298 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 13:54:05,298 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 13:54:05,298 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 13:54:05,330 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 13:54:05,340 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 13:54:05,344 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 13:54:05,345 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 13:54:05,345 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 13:54:05,346 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/add_last-alloca_true-valid-memsafety_true-termination.i [2018-01-24 13:54:05,516 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 13:54:05,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 13:54:05,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 13:54:05,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 13:54:05,526 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 13:54:05,527 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 01:54:05" (1/1) ... [2018-01-24 13:54:05,529 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3565d9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:54:05, skipping insertion in model container [2018-01-24 13:54:05,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 01:54:05" (1/1) ... [2018-01-24 13:54:05,543 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 13:54:05,579 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 13:54:05,697 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 13:54:05,713 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 13:54:05,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:54:05 WrapperNode [2018-01-24 13:54:05,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 13:54:05,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 13:54:05,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 13:54:05,722 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 13:54:05,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:54:05" (1/1) ... [2018-01-24 13:54:05,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:54:05" (1/1) ... [2018-01-24 13:54:05,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:54:05" (1/1) ... [2018-01-24 13:54:05,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:54:05" (1/1) ... [2018-01-24 13:54:05,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:54:05" (1/1) ... [2018-01-24 13:54:05,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:54:05" (1/1) ... [2018-01-24 13:54:05,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:54:05" (1/1) ... [2018-01-24 13:54:05,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 13:54:05,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 13:54:05,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 13:54:05,787 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 13:54:05,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:54:05" (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 [2018-01-24 13:54:05,833 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 13:54:05,833 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 13:54:05,833 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 13:54:05,833 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 13:54:05,833 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 13:54:05,834 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 13:54:05,834 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 13:54:05,834 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 13:54:05,834 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 13:54:05,834 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 13:54:05,834 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 13:54:05,835 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 13:54:06,010 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 13:54:06,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 01:54:06 BoogieIcfgContainer [2018-01-24 13:54:06,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 13:54:06,011 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 13:54:06,011 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 13:54:06,011 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 13:54:06,012 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 01:54:06" (1/1) ... [2018-01-24 13:54:06,058 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 13:54:22,711 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 13:54:22,735 INFO L268 AbstractInterpreter]: Visited 39 different actions 183 times. Merged at 22 different actions 97 times. Widened at 1 different actions 2 times. Found 9 fixpoints after 3 different actions. Largest state had 27 variables. [2018-01-24 13:54:22,737 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 13:54:22,738 INFO L168 Benchmark]: Toolchain (without parser) took 17221.22 ms. Allocated memory was 297.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 257.3 MB in the beginning and 427.5 MB in the end (delta: -170.2 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-24 13:54:22,738 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 297.3 MB. Free memory is still 263.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 13:54:22,738 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.86 ms. Allocated memory is still 297.3 MB. Free memory was 256.3 MB in the beginning and 246.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-24 13:54:22,739 INFO L168 Benchmark]: Boogie Preprocessor took 64.07 ms. Allocated memory is still 297.3 MB. Free memory was 246.2 MB in the beginning and 245.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. [2018-01-24 13:54:22,739 INFO L168 Benchmark]: RCFGBuilder took 224.09 ms. Allocated memory is still 297.3 MB. Free memory was 245.2 MB in the beginning and 229.3 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 5.3 GB. [2018-01-24 13:54:22,739 INFO L168 Benchmark]: Abstract Interpretation took 16726.12 ms. Allocated memory was 297.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 229.3 MB in the beginning and 427.5 MB in the end (delta: -198.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. [2018-01-24 13:54:22,741 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 297.3 MB. Free memory is still 263.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 200.86 ms. Allocated memory is still 297.3 MB. Free memory was 256.3 MB in the beginning and 246.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 64.07 ms. Allocated memory is still 297.3 MB. Free memory was 246.2 MB in the beginning and 245.2 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 5.3 GB. * RCFGBuilder took 224.09 ms. Allocated memory is still 297.3 MB. Free memory was 245.2 MB in the beginning and 229.3 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 16726.12 ms. Allocated memory was 297.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 229.3 MB in the beginning and 427.5 MB in the end (delta: -198.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 29 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 3 LocStat_NO_SUPPORTING_EQUALITIES : 312 LocStat_NO_SUPPORTING_DISEQUALITIES : 51 LocStat_NO_DISJUNCTIONS : -58 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 43 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 59 TransStat_NO_SUPPORTING_DISEQUALITIES : 11 TransStat_NO_DISJUNCTIONS : 48 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 13.697981 RENAME_VARIABLES(MILLISECONDS) : 3.090205 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 6.941662 PROJECTAWAY(MILLISECONDS) : 0.052975 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.067088 DISJOIN(MILLISECONDS) : 1.851390 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 3.130938 ADD_EQUALITY(MILLISECONDS) : 0.039519 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.011996 #CONJOIN_DISJUNCTIVE : 337 #RENAME_VARIABLES : 724 #UNFREEZE : 0 #CONJOIN : 459 #PROJECTAWAY : 388 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 111 #RENAME_VARIABLES_DISJUNCTIVE : 678 #ADD_EQUALITY : 58 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 10 - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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] EXPR, FCALL __builtin_alloca (length*sizeof(int)) [L544] int *arr = __builtin_alloca (length*sizeof(int)); [L545] COND FALSE !(!arr) [L546] int *a = arr; [L547] FCALL \read(*a) - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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] EXPR, FCALL __builtin_alloca (length*sizeof(int)) [L544] int *arr = __builtin_alloca (length*sizeof(int)); [L545] COND FALSE !(!arr) [L546] int *a = arr; [L547] FCALL \read(*a) [L547] FCALL arr + length - 1 - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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] EXPR, FCALL __builtin_alloca (length*sizeof(int)) [L544] int *arr = __builtin_alloca (length*sizeof(int)); [L545] COND FALSE !(!arr) [L546] int *a = arr; [L547] EXPR, FCALL \read(*a) [L547] EXPR, FCALL arr + length - 1 [L547] COND TRUE *a != *(arr + length - 1) [L548] FCALL \read(*a) - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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] EXPR, FCALL __builtin_alloca (length*sizeof(int)) [L544] int *arr = __builtin_alloca (length*sizeof(int)); [L545] COND FALSE !(!arr) [L546] int *a = arr; [L547] EXPR, FCALL \read(*a) [L547] EXPR, FCALL arr + length - 1 [L547] COND TRUE *a != *(arr + length - 1) [L548] FCALL \read(*a) [L548] FCALL arr + length - 1 - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds 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] EXPR, FCALL __builtin_alloca (length*sizeof(int)) [L544] int *arr = __builtin_alloca (length*sizeof(int)); [L545] COND FALSE !(!arr) [L546] int *a = arr; [L547] EXPR, FCALL \read(*a) [L547] EXPR, FCALL arr + length - 1 [L547] COND TRUE *a != *(arr + length - 1) [L548] EXPR, FCALL \read(*a) [L548] EXPR, FCALL arr + length - 1 [L548] FCALL *a += *(arr + length - 1) - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 540]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_13-54-22-748.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_13-54-22-748.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_13-54-22-748.csv Received shutdown request...