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_smtcomp.epf -i ../../../trunk/examples/svcomp/array-memsafety/add_last-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 04:01:38,026 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 04:01:38,028 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 04:01:38,041 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 04:01:38,041 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 04:01:38,042 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 04:01:38,043 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 04:01:38,045 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 04:01:38,047 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 04:01:38,047 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 04:01:38,048 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 04:01:38,048 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 04:01:38,049 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 04:01:38,049 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 04:01:38,050 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 04:01:38,053 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 04:01:38,055 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 04:01:38,056 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 04:01:38,058 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 04:01:38,059 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 04:01:38,061 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-25 04:01:38,065 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 04:01:38,066 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 04:01:38,066 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_smtcomp.epf [2018-01-25 04:01:38,076 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 04:01:38,076 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 04:01:38,077 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 04:01:38,077 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 04:01:38,077 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 04:01:38,078 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 04:01:38,078 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 04:01:38,078 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 04:01:38,078 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 04:01:38,079 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 04:01:38,079 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 04:01:38,079 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 04:01:38,079 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 04:01:38,079 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 04:01:38,080 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 04:01:38,080 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 04:01:38,080 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 04:01:38,080 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 04:01:38,080 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 04:01:38,081 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 04:01:38,081 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 04:01:38,081 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 04:01:38,081 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 04:01:38,081 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 04:01:38,082 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 04:01:38,082 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 04:01:38,082 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 04:01:38,082 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 04:01:38,082 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 04:01:38,083 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-25 04:01:38,083 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 04:01:38,083 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 04:01:38,083 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 04:01:38,084 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 04:01:38,084 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 04:01:38,118 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 04:01:38,130 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 04:01:38,153 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 04:01:38,155 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 04:01:38,155 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 04:01:38,156 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/add_last-alloca_true-valid-memsafety_true-termination.i [2018-01-25 04:01:38,358 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 04:01:38,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 04:01:38,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 04:01:38,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 04:01:38,368 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 04:01:38,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 04:01:38" (1/1) ... [2018-01-25 04:01:38,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21503e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:01:38, skipping insertion in model container [2018-01-25 04:01:38,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 04:01:38" (1/1) ... [2018-01-25 04:01:38,389 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 04:01:38,428 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 04:01:38,546 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 04:01:38,564 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 04:01:38,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:01:38 WrapperNode [2018-01-25 04:01:38,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 04:01:38,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 04:01:38,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 04:01:38,572 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 04:01:38,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:01:38" (1/1) ... [2018-01-25 04:01:38,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:01:38" (1/1) ... [2018-01-25 04:01:38,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:01:38" (1/1) ... [2018-01-25 04:01:38,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:01:38" (1/1) ... [2018-01-25 04:01:38,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:01:38" (1/1) ... [2018-01-25 04:01:38,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:01:38" (1/1) ... [2018-01-25 04:01:38,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:01:38" (1/1) ... [2018-01-25 04:01:38,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 04:01:38,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 04:01:38,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 04:01:38,609 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 04:01:38,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:01:38" (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 [2018-01-25 04:01:38,656 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 04:01:38,656 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 04:01:38,656 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 04:01:38,657 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 04:01:38,657 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 04:01:38,657 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 04:01:38,657 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 04:01:38,657 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 04:01:38,657 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 04:01:38,657 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 04:01:38,658 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 04:01:38,658 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 04:01:38,823 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 04:01:38,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 04:01:38 BoogieIcfgContainer [2018-01-25 04:01:38,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 04:01:38,825 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-25 04:01:38,825 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-25 04:01:38,825 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-25 04:01:38,826 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 04:01:38" (1/1) ... [2018-01-25 04:01:38,871 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 04:01:55,972 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 04:01:55,987 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. [2018-01-25 04:01:55,989 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-25 04:01:55,990 INFO L168 Benchmark]: Toolchain (without parser) took 17631.66 ms. Allocated memory was 305.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 264.2 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 172.0 MB. Max. memory is 5.3 GB. [2018-01-25 04:01:55,991 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 305.1 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 04:01:55,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.57 ms. Allocated memory is still 305.1 MB. Free memory was 264.2 MB in the beginning and 254.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-25 04:01:55,991 INFO L168 Benchmark]: Boogie Preprocessor took 36.37 ms. Allocated memory is still 305.1 MB. Free memory was 254.2 MB in the beginning and 252.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-25 04:01:55,991 INFO L168 Benchmark]: RCFGBuilder took 215.44 ms. Allocated memory is still 305.1 MB. Free memory was 252.2 MB in the beginning and 237.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-25 04:01:55,992 INFO L168 Benchmark]: Abstract Interpretation took 17164.86 ms. Allocated memory was 305.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 235.7 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 143.5 MB. Max. memory is 5.3 GB. [2018-01-25 04:01:55,993 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 305.1 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 208.57 ms. Allocated memory is still 305.1 MB. Free memory was 264.2 MB in the beginning and 254.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.37 ms. Allocated memory is still 305.1 MB. Free memory was 254.2 MB in the beginning and 252.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 215.44 ms. Allocated memory is still 305.1 MB. Free memory was 252.2 MB in the beginning and 237.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 17164.86 ms. Allocated memory was 305.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 235.7 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 143.5 MB. 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) : 14.979010 RENAME_VARIABLES(MILLISECONDS) : 3.074975 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 7.568961 PROJECTAWAY(MILLISECONDS) : 0.053382 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.073984 DISJOIN(MILLISECONDS) : 1.829866 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 3.120378 ADD_EQUALITY(MILLISECONDS) : 0.036605 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.014686 #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_smtcomp.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-25_04-01-56-000.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_smtcomp.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-25_04-01-56-000.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_smtcomp.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-25_04-01-56-000.csv Received shutdown request...