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_mostprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 19:11:55,323 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 19:11:55,325 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 19:11:55,339 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 19:11:55,340 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 19:11:55,341 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 19:11:55,342 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 19:11:55,343 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 19:11:55,345 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 19:11:55,346 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 19:11:55,347 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 19:11:55,347 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 19:11:55,348 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 19:11:55,350 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 19:11:55,350 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 19:11:55,353 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 19:11:55,355 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 19:11:55,357 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 19:11:55,359 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 19:11:55,360 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 19:11:55,362 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 19:11:55,367 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 19:11:55,368 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 19:11:55,368 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_mostprecise.epf [2018-01-24 19:11:55,377 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 19:11:55,378 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 19:11:55,378 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 19:11:55,378 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 19:11:55,378 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 19:11:55,379 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 19:11:55,379 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 19:11:55,379 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 19:11:55,379 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 19:11:55,379 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 19:11:55,379 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 19:11:55,380 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 19:11:55,380 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 19:11:55,380 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 19:11:55,380 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 19:11:55,380 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 19:11:55,380 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 19:11:55,380 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 19:11:55,381 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 19:11:55,381 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 19:11:55,381 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 19:11:55,381 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 19:11:55,381 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 19:11:55,381 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 19:11:55,382 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 19:11:55,382 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 19:11:55,382 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 19:11:55,382 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 19:11:55,382 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 19:11:55,383 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 19:11:55,383 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 19:11:55,383 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 19:11:55,383 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 19:11:55,383 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 19:11:55,384 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 19:11:55,384 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 19:11:55,416 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 19:11:55,426 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 19:11:55,430 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 19:11:55,431 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 19:11:55,432 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 19:11:55,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_true-valid-memsafety_true-termination.i [2018-01-24 19:11:55,614 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 19:11:55,620 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 19:11:55,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 19:11:55,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 19:11:55,625 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 19:11:55,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 07:11:55" (1/1) ... [2018-01-24 19:11:55,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d3d535 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:11:55, skipping insertion in model container [2018-01-24 19:11:55,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 07:11:55" (1/1) ... [2018-01-24 19:11:55,643 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 19:11:55,692 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 19:11:55,814 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 19:11:55,831 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 19:11:55,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:11:55 WrapperNode [2018-01-24 19:11:55,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 19:11:55,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 19:11:55,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 19:11:55,840 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 19:11:55,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:11:55" (1/1) ... [2018-01-24 19:11:55,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:11:55" (1/1) ... [2018-01-24 19:11:55,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:11:55" (1/1) ... [2018-01-24 19:11:55,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:11:55" (1/1) ... [2018-01-24 19:11:55,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:11:55" (1/1) ... [2018-01-24 19:11:55,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:11:55" (1/1) ... [2018-01-24 19:11:55,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:11:55" (1/1) ... [2018-01-24 19:11:55,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 19:11:55,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 19:11:55,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 19:11:55,875 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 19:11:55,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 07:11:55" (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 19:11:55,926 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 19:11:55,926 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 19:11:55,926 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 19:11:55,926 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 19:11:55,927 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 19:11:55,927 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 19:11:55,927 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 19:11:55,927 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 19:11:55,927 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 19:11:55,927 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 19:11:55,927 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 19:11:55,927 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 19:11:55,927 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 19:11:55,928 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 19:11:55,928 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 19:11:55,928 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 19:11:55,928 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 19:11:55,928 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 19:11:56,120 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 19:11:56,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 07:11:56 BoogieIcfgContainer [2018-01-24 19:11:56,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 19:11:56,121 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 19:11:56,121 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 19:11:56,122 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 19:11:56,122 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 07:11:56" (1/1) ... [2018-01-24 19:11:56,180 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 19:12:02,901 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 19:12:02,913 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 19:12:02,928 INFO L268 AbstractInterpreter]: Visited 53 different actions 184 times. Merged at 29 different actions 85 times. Never widened. Found 18 fixpoints after 11 different actions. Largest state had 29 variables. [2018-01-24 19:12:02,930 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 19:12:02,931 INFO L168 Benchmark]: Toolchain (without parser) took 7315.77 ms. Allocated memory was 304.6 MB in the beginning and 844.1 MB in the end (delta: 539.5 MB). Free memory was 263.7 MB in the beginning and 575.3 MB in the end (delta: -311.7 MB). Peak memory consumption was 227.8 MB. Max. memory is 5.3 GB. [2018-01-24 19:12:02,932 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 304.6 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 19:12:02,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.21 ms. Allocated memory is still 304.6 MB. Free memory was 263.7 MB in the beginning and 250.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-24 19:12:02,932 INFO L168 Benchmark]: Boogie Preprocessor took 34.74 ms. Allocated memory is still 304.6 MB. Free memory was 250.6 MB in the beginning and 248.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 19:12:02,933 INFO L168 Benchmark]: RCFGBuilder took 245.85 ms. Allocated memory is still 304.6 MB. Free memory was 248.7 MB in the beginning and 232.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-24 19:12:02,933 INFO L168 Benchmark]: Abstract Interpretation took 6808.60 ms. Allocated memory was 304.6 MB in the beginning and 844.1 MB in the end (delta: 539.5 MB). Free memory was 232.1 MB in the beginning and 575.3 MB in the end (delta: -343.3 MB). Peak memory consumption was 196.2 MB. Max. memory is 5.3 GB. [2018-01-24 19:12:02,935 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 304.6 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 219.21 ms. Allocated memory is still 304.6 MB. Free memory was 263.7 MB in the beginning and 250.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.74 ms. Allocated memory is still 304.6 MB. Free memory was 250.6 MB in the beginning and 248.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 245.85 ms. Allocated memory is still 304.6 MB. Free memory was 248.7 MB in the beginning and 232.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 6808.60 ms. Allocated memory was 304.6 MB in the beginning and 844.1 MB in the end (delta: 539.5 MB). Free memory was 232.1 MB in the beginning and 575.3 MB in the end (delta: -343.3 MB). Peak memory consumption was 196.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 43 LocStat_MAX_WEQGRAPH_SIZE : 2 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 245 LocStat_NO_SUPPORTING_DISEQUALITIES : 52 LocStat_NO_DISJUNCTIONS : -86 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 61 TransStat_MAX_WEQGRAPH_SIZE : 4 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 100 TransStat_NO_SUPPORTING_DISEQUALITIES : 20 TransStat_NO_DISJUNCTIONS : 69 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.208375 RENAME_VARIABLES(MILLISECONDS) : 0.161948 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.191755 PROJECTAWAY(MILLISECONDS) : 0.099684 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.079176 DISJOIN(MILLISECONDS) : 0.440861 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.178074 ADD_EQUALITY(MILLISECONDS) : 0.022773 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.019153 #CONJOIN_DISJUNCTIVE : 307 #RENAME_VARIABLES : 703 #UNFREEZE : 0 #CONJOIN : 542 #PROJECTAWAY : 429 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 74 #RENAME_VARIABLES_DISJUNCTIVE : 647 #ADD_EQUALITY : 85 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 17 - UnprovableResult [Line: 1460]: 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: [L1461] CALL entry_point() [L1439] int len = 10; [L1440] CALL, EXPR ldv_malloc(sizeof(struct A18*)*len) [L1073] COND FALSE !(__VERIFIER_nondet_int()) [L1076] RET return 0; [L1440] EXPR ldv_malloc(sizeof(struct A18*)*len) [L1440] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L1441] COND FALSE, RET !(\read(**array)) [L1461] entry_point() - 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: [L1461] CALL entry_point() [L1439] int len = 10; [L1440] CALL, EXPR ldv_malloc(sizeof(struct A18*)*len) [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) [L1074] RET return malloc(size); [L1440] EXPR ldv_malloc(sizeof(struct A18*)*len) [L1440] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L1441] COND TRUE \read(**array) [L1442] struct A18 *p; [L1443] int i=0; [L1444] int j; [L1445] COND FALSE !(i=0 [L1453] FCALL array[j] - 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: [L1461] CALL entry_point() [L1439] int len = 10; [L1440] CALL, EXPR ldv_malloc(sizeof(struct A18*)*len) [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) [L1074] RET return malloc(size); [L1440] EXPR ldv_malloc(sizeof(struct A18*)*len) [L1440] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L1441] COND TRUE \read(**array) [L1442] struct A18 *p; [L1443] int i=0; [L1444] int j; [L1445] COND FALSE !(i=0 [L1453] EXPR, FCALL array[j] [L1453] FCALL free(array[j]) - 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: [L1461] CALL entry_point() [L1439] int len = 10; [L1440] CALL, EXPR ldv_malloc(sizeof(struct A18*)*len) [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) [L1074] RET return malloc(size); [L1440] EXPR ldv_malloc(sizeof(struct A18*)*len) [L1440] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L1441] COND TRUE \read(**array) [L1442] struct A18 *p; [L1443] int i=0; [L1444] int j; [L1445] COND FALSE !(i=0 [L1453] EXPR, FCALL array[j] [L1453] FCALL free(array[j]) - 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: [L1461] CALL entry_point() [L1439] int len = 10; [L1440] CALL, EXPR ldv_malloc(sizeof(struct A18*)*len) [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) [L1074] RET return malloc(size); [L1440] EXPR ldv_malloc(sizeof(struct A18*)*len) [L1440] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L1441] COND TRUE \read(**array) [L1442] struct A18 *p; [L1443] int i=0; [L1444] int j; [L1445] COND FALSE !(i=0 [L1453] EXPR, FCALL array[j] [L1453] FCALL free(array[j]) [L1452] j-- [L1452] COND FALSE !(j>=0) [L1455] FCALL free(array) - 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: [L1461] CALL entry_point() [L1439] int len = 10; [L1440] CALL, EXPR ldv_malloc(sizeof(struct A18*)*len) [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) [L1074] RET return malloc(size); [L1440] EXPR ldv_malloc(sizeof(struct A18*)*len) [L1440] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L1441] COND TRUE \read(**array) [L1442] struct A18 *p; [L1443] int i=0; [L1444] int j; [L1445] COND FALSE !(i=0 [L1453] EXPR, FCALL array[j] [L1453] FCALL free(array[j]) [L1452] j-- [L1452] COND TRUE j>=0 [L1453] FCALL array[j] - 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: [L1461] CALL entry_point() [L1439] int len = 10; [L1440] CALL, EXPR ldv_malloc(sizeof(struct A18*)*len) [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) [L1074] RET return malloc(size); [L1440] EXPR ldv_malloc(sizeof(struct A18*)*len) [L1440] struct A18 **array = (struct A18 **)ldv_malloc(sizeof(struct A18*)*len); [L1441] COND TRUE \read(**array) [L1442] struct A18 *p; [L1443] int i=0; [L1444] int j; [L1445] COND TRUE i