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/memsafety/960521-1_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 04:13:49,717 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 04:13:49,720 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 04:13:49,737 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 04:13:49,738 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 04:13:49,739 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 04:13:49,740 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 04:13:49,742 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 04:13:49,744 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 04:13:49,745 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 04:13:49,746 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 04:13:49,746 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 04:13:49,747 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 04:13:49,748 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 04:13:49,749 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 04:13:49,752 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 04:13:49,761 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 04:13:49,763 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 04:13:49,764 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 04:13:49,766 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 04:13:49,768 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-25 04:13:49,773 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 04:13:49,774 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 04:13:49,774 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 04:13:49,784 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 04:13:49,784 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 04:13:49,785 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 04:13:49,785 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 04:13:49,786 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 04:13:49,786 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 04:13:49,786 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 04:13:49,786 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 04:13:49,786 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 04:13:49,787 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 04:13:49,787 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 04:13:49,787 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 04:13:49,787 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 04:13:49,787 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 04:13:49,787 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 04:13:49,787 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 04:13:49,787 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 04:13:49,788 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 04:13:49,788 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 04:13:49,788 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 04:13:49,788 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 04:13:49,788 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 04:13:49,788 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 04:13:49,789 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 04:13:49,789 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 04:13:49,789 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 04:13:49,789 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 04:13:49,789 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 04:13:49,790 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 04:13:49,790 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-25 04:13:49,790 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 04:13:49,790 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 04:13:49,790 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 04:13:49,791 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 04:13:49,791 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 04:13:49,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 04:13:49,837 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 04:13:49,840 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 04:13:49,841 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 04:13:49,842 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 04:13:49,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/960521-1_false-valid-deref.i [2018-01-25 04:13:50,125 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 04:13:50,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 04:13:50,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 04:13:50,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 04:13:50,136 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 04:13:50,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 04:13:50" (1/1) ... [2018-01-25 04:13:50,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53037d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:13:50, skipping insertion in model container [2018-01-25 04:13:50,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 04:13:50" (1/1) ... [2018-01-25 04:13:50,152 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 04:13:50,188 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 04:13:50,301 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 04:13:50,319 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 04:13:50,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:13:50 WrapperNode [2018-01-25 04:13:50,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 04:13:50,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 04:13:50,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 04:13:50,328 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 04:13:50,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:13:50" (1/1) ... [2018-01-25 04:13:50,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:13:50" (1/1) ... [2018-01-25 04:13:50,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:13:50" (1/1) ... [2018-01-25 04:13:50,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:13:50" (1/1) ... [2018-01-25 04:13:50,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:13:50" (1/1) ... [2018-01-25 04:13:50,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:13:50" (1/1) ... [2018-01-25 04:13:50,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:13:50" (1/1) ... [2018-01-25 04:13:50,360 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 04:13:50,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 04:13:50,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 04:13:50,361 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 04:13:50,362 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:13:50" (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 04:13:50,410 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 04:13:50,410 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 04:13:50,410 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-25 04:13:50,410 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 04:13:50,410 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 04:13:50,410 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 04:13:50,410 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 04:13:50,411 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 04:13:50,411 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 04:13:50,411 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 04:13:50,411 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 04:13:50,411 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-25 04:13:50,411 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 04:13:50,412 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 04:13:50,412 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 04:13:50,666 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 04:13:50,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 04:13:50 BoogieIcfgContainer [2018-01-25 04:13:50,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 04:13:50,667 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-25 04:13:50,667 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-25 04:13:50,668 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-25 04:13:50,668 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 04:13:50" (1/1) ... [2018-01-25 04:13:50,717 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 04:13:59,269 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 04:13:59,292 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-25 04:13:59,296 INFO L268 AbstractInterpreter]: Visited 57 different actions 181 times. Merged at 30 different actions 92 times. Never widened. Found 7 fixpoints after 4 different actions. Largest state had 28 variables. [2018-01-25 04:13:59,298 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-25 04:13:59,299 INFO L168 Benchmark]: Toolchain (without parser) took 9173.38 ms. Allocated memory was 300.4 MB in the beginning and 999.3 MB in the end (delta: 698.9 MB). Free memory was 260.5 MB in the beginning and 382.0 MB in the end (delta: -121.6 MB). Peak memory consumption was 577.3 MB. Max. memory is 5.3 GB. [2018-01-25 04:13:59,300 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 300.4 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 04:13:59,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.54 ms. Allocated memory is still 300.4 MB. Free memory was 259.5 MB in the beginning and 249.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 5.3 GB. [2018-01-25 04:13:59,300 INFO L168 Benchmark]: Boogie Preprocessor took 33.17 ms. Allocated memory is still 300.4 MB. Free memory was 249.1 MB in the beginning and 248.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-25 04:13:59,301 INFO L168 Benchmark]: RCFGBuilder took 305.79 ms. Allocated memory is still 300.4 MB. Free memory was 248.1 MB in the beginning and 230.5 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. [2018-01-25 04:13:59,301 INFO L168 Benchmark]: Abstract Interpretation took 8630.80 ms. Allocated memory was 300.4 MB in the beginning and 999.3 MB in the end (delta: 698.9 MB). Free memory was 229.5 MB in the beginning and 382.0 MB in the end (delta: -152.5 MB). Peak memory consumption was 546.4 MB. Max. memory is 5.3 GB. [2018-01-25 04:13:59,303 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 300.4 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 196.54 ms. Allocated memory is still 300.4 MB. Free memory was 259.5 MB in the beginning and 249.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 33.17 ms. Allocated memory is still 300.4 MB. Free memory was 249.1 MB in the beginning and 248.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 305.79 ms. Allocated memory is still 300.4 MB. Free memory was 248.1 MB in the beginning and 230.5 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 8630.80 ms. Allocated memory was 300.4 MB in the beginning and 999.3 MB in the end (delta: 698.9 MB). Free memory was 229.5 MB in the beginning and 382.0 MB in the end (delta: -152.5 MB). Peak memory consumption was 546.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 42 LocStat_MAX_WEQGRAPH_SIZE : 8 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 660 LocStat_NO_SUPPORTING_DISEQUALITIES : 117 LocStat_NO_DISJUNCTIONS : -84 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 63 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 139 TransStat_NO_SUPPORTING_DISEQUALITIES : 30 TransStat_NO_DISJUNCTIONS : 77 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.042966 RENAME_VARIABLES(MILLISECONDS) : 0.203348 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.001466 PROJECTAWAY(MILLISECONDS) : 0.128910 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.084223 DISJOIN(MILLISECONDS) : 0.484208 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.233290 ADD_EQUALITY(MILLISECONDS) : 0.033435 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.010062 #CONJOIN_DISJUNCTIVE : 292 #RENAME_VARIABLES : 664 #UNFREEZE : 0 #CONJOIN : 577 #PROJECTAWAY : 400 #ADD_WEAK_EQUALITY : 15 #DISJOIN : 53 #RENAME_VARIABLES_DISJUNCTIVE : 614 #ADD_EQUALITY : 110 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 24 - 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: [L619] int *a, *b; [L620] int n; [L631] n = 128 [L632] EXPR, FCALL malloc (n * sizeof(*a)) [L632] a = malloc (n * sizeof(*a)) [L633] EXPR, FCALL malloc (n * sizeof(*b)) [L633] b = malloc (n * sizeof(*b)) [L634] EXPR b++ [L634] FCALL *b++ = 0 - 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: [L619] int *a, *b; [L620] int n; [L631] n = 128 [L632] EXPR, FCALL malloc (n * sizeof(*a)) [L632] a = malloc (n * sizeof(*a)) [L633] EXPR, FCALL malloc (n * sizeof(*b)) [L633] b = malloc (n * sizeof(*b)) [L634] EXPR b++ [L634] FCALL *b++ = 0 [L635] CALL foo () [L623] int i; [L624] i = 0 [L624] COND TRUE i < n [L625] FCALL a[i] = -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: [L619] int *a, *b; [L620] int n; [L631] n = 128 [L632] EXPR, FCALL malloc (n * sizeof(*a)) [L632] a = malloc (n * sizeof(*a)) [L633] EXPR, FCALL malloc (n * sizeof(*b)) [L633] b = malloc (n * sizeof(*b)) [L634] EXPR b++ [L634] FCALL *b++ = 0 [L635] CALL foo () [L623] int i; [L624] i = 0 [L624] COND FALSE !(i < n) [L626] i = 0 [L626] COND TRUE i < 128 - 1 [L627] FCALL b[i] = -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: [L619] int *a, *b; [L620] int n; [L631] n = 128 [L632] EXPR, FCALL malloc (n * sizeof(*a)) [L632] a = malloc (n * sizeof(*a)) [L633] EXPR, FCALL malloc (n * sizeof(*b)) [L633] b = malloc (n * sizeof(*b)) [L634] EXPR b++ [L634] FCALL *b++ = 0 [L635] CALL foo () [L623] int i; [L624] i = 0 [L624] COND FALSE !(i < n) [L626] i = 0 [L626] COND FALSE, RET !(i < 128 - 1) [L635] foo () [L636] FCALL b[-2] - UnprovableResult [Line: 1]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: abstract domain could reach this error location. Possible FailurePath: [L619] int *a, *b; [L620] int n; [L631] n = 128 [L632] EXPR, FCALL malloc (n * sizeof(*a)) [L632] a = malloc (n * sizeof(*a)) [L633] EXPR, FCALL malloc (n * sizeof(*b)) [L633] b = malloc (n * sizeof(*b)) [L634] EXPR b++ [L634] FCALL *b++ = 0 [L635] CALL foo () [L623] int i; [L624] i = 0 [L624] COND FALSE !(i < n) [L626] i = 0 [L626] COND FALSE, RET !(i < 128 - 1) [L635] foo () [L636] FCALL b[-2] [L636] COND FALSE !(b[-2]) [L639] FCALL free(a) [L639] FCALL free(b-1) - UnprovableResult [Line: 1]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: abstract domain could reach this error location. Possible FailurePath: [L619] int *a, *b; [L620] int n; [L631] n = 128 [L632] EXPR, FCALL malloc (n * sizeof(*a)) [L632] a = malloc (n * sizeof(*a)) [L633] EXPR, FCALL malloc (n * sizeof(*b)) [L633] b = malloc (n * sizeof(*b)) [L634] EXPR b++ [L634] FCALL *b++ = 0 [L635] CALL foo () [L623] int i; [L624] i = 0 [L624] COND FALSE !(i < n) [L626] i = 0 [L626] COND FALSE, RET !(i < 128 - 1) [L635] foo () [L636] FCALL b[-2] [L636] COND TRUE b[-2] [L637] FCALL free(a) [L637] FCALL free(b-1) - UnprovableResult [Line: 629]: 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: [L619] int *a, *b; [L620] int n; [L631] n = 128 [L632] EXPR, FCALL malloc (n * sizeof(*a)) [L632] a = malloc (n * sizeof(*a)) [L633] EXPR, FCALL malloc (n * sizeof(*b)) [L633] b = malloc (n * sizeof(*b)) [L634] EXPR b++ [L634] FCALL *b++ = 0 [L635] CALL foo () [L623] int i; [L624] i = 0 [L624] COND FALSE !(i < n) [L626] i = 0 [L626] COND FALSE, RET !(i < 128 - 1) [L635] foo () [L636] FCALL b[-2] [L636] COND FALSE !(b[-2]) [L639] FCALL free(a) [L639] FCALL free(b-1) [L640] return 0; - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free 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]: free always succeeds For all program executions holds that free 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 * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) 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/960521-1_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_smtcomp.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-25_04-13-59-313.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_smtcomp.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-25_04-13-59-313.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/960521-1_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_smtcomp.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-25_04-13-59-313.csv Received shutdown request...