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_imprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_1_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:30:29,960 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:30:29,962 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:30:29,979 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:30:29,979 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:30:29,980 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:30:29,982 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:30:29,984 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:30:29,986 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:30:29,987 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:30:29,988 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:30:29,988 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:30:29,989 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:30:29,990 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:30:29,991 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:30:29,994 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:30:29,996 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:30:29,998 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:30:30,000 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:30:30,001 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:30:30,003 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:30:30,008 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:30:30,009 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:30:30,009 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_imprecise.epf [2018-01-24 16:30:30,019 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:30:30,019 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:30:30,020 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:30:30,020 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:30:30,020 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:30:30,020 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:30:30,020 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:30:30,021 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:30:30,021 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:30:30,021 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:30:30,022 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:30:30,022 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:30:30,022 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:30:30,022 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:30:30,022 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:30:30,022 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:30:30,023 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:30:30,023 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:30:30,023 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:30:30,023 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:30:30,023 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:30:30,024 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:30:30,024 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:30:30,024 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:30:30,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:30:30,024 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:30:30,025 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:30:30,025 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:30:30,025 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:30:30,025 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:30:30,025 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:30:30,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:30:30,026 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:30:30,026 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:30:30,027 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:30:30,061 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:30:30,074 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:30:30,078 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:30:30,079 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:30:30,080 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:30:30,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test18_1_false-valid-memtrack_true-termination.i [2018-01-24 16:30:30,269 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:30:30,305 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:30:30,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:30:30,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:30:30,311 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:30:30,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:30:30" (1/1) ... [2018-01-24 16:30:30,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3383522d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:30:30, skipping insertion in model container [2018-01-24 16:30:30,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:30:30" (1/1) ... [2018-01-24 16:30:30,328 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:30:30,376 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:30:30,496 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:30:30,511 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:30:30,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:30:30 WrapperNode [2018-01-24 16:30:30,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:30:30,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:30:30,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:30:30,520 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:30:30,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:30:30" (1/1) ... [2018-01-24 16:30:30,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:30:30" (1/1) ... [2018-01-24 16:30:30,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:30:30" (1/1) ... [2018-01-24 16:30:30,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:30:30" (1/1) ... [2018-01-24 16:30:30,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:30:30" (1/1) ... [2018-01-24 16:30:30,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:30:30" (1/1) ... [2018-01-24 16:30:30,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:30:30" (1/1) ... [2018-01-24 16:30:30,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:30:30,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:30:30,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:30:30,556 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:30:30,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:30:30" (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 16:30:30,605 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:30:30,605 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:30:30,605 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 16:30:30,605 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 16:30:30,605 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:30:30,606 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 16:30:30,606 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 16:30:30,606 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:30:30,606 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:30:30,606 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:30:30,606 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 16:30:30,606 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 16:30:30,606 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:30:30,606 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 16:30:30,606 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 16:30:30,607 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:30:30,607 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:30:30,607 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:30:30,791 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:30:30,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:30:30 BoogieIcfgContainer [2018-01-24 16:30:30,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:30:30,792 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:30:30,793 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:30:30,793 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:30:30,794 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:30:30" (1/1) ... [2018-01-24 16:30:30,860 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:30:31,739 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:30:31,748 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:30:31,761 INFO L268 AbstractInterpreter]: Visited 50 different actions 170 times. Merged at 31 different actions 82 times. Never widened. Found 17 fixpoints after 11 different actions. Largest state had 29 variables. [2018-01-24 16:30:31,763 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:30:31,764 INFO L168 Benchmark]: Toolchain (without parser) took 1463.87 ms. Allocated memory was 302.0 MB in the beginning and 364.4 MB in the end (delta: 62.4 MB). Free memory was 261.0 MB in the beginning and 324.9 MB in the end (delta: -63.9 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:30:31,765 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:30:31,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.70 ms. Allocated memory is still 302.0 MB. Free memory was 261.0 MB in the beginning and 248.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:30:31,766 INFO L168 Benchmark]: Boogie Preprocessor took 35.67 ms. Allocated memory is still 302.0 MB. Free memory was 248.0 MB in the beginning and 246.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:30:31,766 INFO L168 Benchmark]: RCFGBuilder took 235.84 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 229.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-24 16:30:31,766 INFO L168 Benchmark]: Abstract Interpretation took 970.95 ms. Allocated memory was 302.0 MB in the beginning and 364.4 MB in the end (delta: 62.4 MB). Free memory was 229.5 MB in the beginning and 324.9 MB in the end (delta: -95.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:30:31,768 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 302.0 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 213.70 ms. Allocated memory is still 302.0 MB. Free memory was 261.0 MB in the beginning and 248.0 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.67 ms. Allocated memory is still 302.0 MB. Free memory was 248.0 MB in the beginning and 246.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 235.84 ms. Allocated memory is still 302.0 MB. Free memory was 246.0 MB in the beginning and 229.5 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 970.95 ms. Allocated memory was 302.0 MB in the beginning and 364.4 MB in the end (delta: 62.4 MB). Free memory was 229.5 MB in the beginning and 324.9 MB in the end (delta: -95.5 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 42 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 198 LocStat_NO_SUPPORTING_DISEQUALITIES : 43 LocStat_NO_DISJUNCTIONS : -84 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 58 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 85 TransStat_NO_SUPPORTING_DISEQUALITIES : 15 TransStat_NO_DISJUNCTIONS : 63 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.414502 RENAME_VARIABLES(MILLISECONDS) : 0.021877 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.159199 PROJECTAWAY(MILLISECONDS) : 0.667777 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001207 DISJOIN(MILLISECONDS) : 0.383543 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.037087 ADD_EQUALITY(MILLISECONDS) : 0.050912 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.040127 #CONJOIN_DISJUNCTIVE : 275 #RENAME_VARIABLES : 636 #UNFREEZE : 0 #CONJOIN : 484 #PROJECTAWAY : 441 #ADD_WEAK_EQUALITY : 8 #DISJOIN : 64 #RENAME_VARIABLES_DISJUNCTIVE : 609 #ADD_EQUALITY : 79 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 13 - UnprovableResult [Line: 1458]: 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: [L1459] 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] struct A18 *p; [L1442] int i=0; [L1443] int j; [L1444] COND TRUE, RET !array [L1459] 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: [L1459] 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] struct A18 *p; [L1442] int i=0; [L1443] int j; [L1444] COND FALSE !(!array) [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: [L1459] 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] struct A18 *p; [L1442] int i=0; [L1443] int j; [L1444] COND FALSE !(!array) [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: [L1459] 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] struct A18 *p; [L1442] int i=0; [L1443] int j; [L1444] COND FALSE !(!array) [L1445] COND FALSE !(i=0 [L1453] EXPR, FCALL array[j] [L1453] FCALL free(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: [L1459] 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] struct A18 *p; [L1442] int i=0; [L1443] int j; [L1444] COND FALSE !(!array) [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: [L1459] 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] struct A18 *p; [L1442] int i=0; [L1443] int j; [L1444] COND FALSE !(!array) [L1445] COND TRUE i