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/list-ext-properties/test-0513_1_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:28:59,646 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:28:59,648 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:28:59,662 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:28:59,663 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:28:59,663 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:28:59,664 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:28:59,665 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:28:59,668 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:28:59,669 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:28:59,670 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:28:59,670 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:28:59,671 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:28:59,672 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:28:59,672 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:28:59,675 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:28:59,677 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:28:59,679 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:28:59,681 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:28:59,682 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:28:59,685 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:28:59,690 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:28:59,691 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:28:59,691 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 16:28:59,702 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:28:59,702 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:28:59,703 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:28:59,703 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:28:59,703 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:28:59,703 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:28:59,704 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:28:59,704 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:28:59,707 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:28:59,707 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:28:59,707 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:28:59,707 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:28:59,707 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:28:59,708 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:28:59,708 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:28:59,708 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:28:59,708 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:28:59,708 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:28:59,709 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:28:59,709 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:28:59,709 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:28:59,709 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:28:59,709 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:28:59,710 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:28:59,710 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:28:59,711 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:28:59,712 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:28:59,712 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:28:59,712 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:28:59,712 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:28:59,712 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:28:59,713 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:28:59,713 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:28:59,714 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:28:59,714 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:28:59,752 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:28:59,765 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:28:59,768 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:28:59,770 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:28:59,770 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:28:59,771 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/test-0513_1_true-valid-memsafety.i [2018-01-24 16:28:59,943 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:28:59,950 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:28:59,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:28:59,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:28:59,956 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:28:59,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:28:59" (1/1) ... [2018-01-24 16:28:59,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e82129b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:28:59, skipping insertion in model container [2018-01-24 16:28:59,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:28:59" (1/1) ... [2018-01-24 16:28:59,974 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:29:00,013 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:29:00,134 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:29:00,164 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:29:00,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:29:00 WrapperNode [2018-01-24 16:29:00,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:29:00,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:29:00,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:29:00,173 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:29:00,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:29:00" (1/1) ... [2018-01-24 16:29:00,186 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:29:00" (1/1) ... [2018-01-24 16:29:00,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:29:00" (1/1) ... [2018-01-24 16:29:00,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:29:00" (1/1) ... [2018-01-24 16:29:00,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:29:00" (1/1) ... [2018-01-24 16:29:00,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:29:00" (1/1) ... [2018-01-24 16:29:00,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:29:00" (1/1) ... [2018-01-24 16:29:00,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:29:00,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:29:00,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:29:00,213 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:29:00,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:29:00" (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 16:29:00,265 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:29:00,265 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:29:00,265 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:29:00,266 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:29:00,266 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:29:00,266 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 16:29:00,266 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 16:29:00,266 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:29:00,266 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:29:00,266 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:29:00,267 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 16:29:00,267 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 16:29:00,267 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-01-24 16:29:00,267 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:29:00,267 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:29:00,267 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:29:00,268 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:29:00,805 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:29:00,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:29:00 BoogieIcfgContainer [2018-01-24 16:29:00,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:29:00,807 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:29:00,807 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:29:00,808 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:29:00,809 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:29:00" (1/1) ... [2018-01-24 16:29:00,851 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:29:06,413 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:29:06,431 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:29:06,486 INFO L268 AbstractInterpreter]: Visited 174 different actions 860 times. Merged at 138 different actions 476 times. Widened at 5 different actions 7 times. Found 123 fixpoints after 42 different actions. Largest state had 64 variables. [2018-01-24 16:29:06,488 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:29:06,490 INFO L168 Benchmark]: Toolchain (without parser) took 6546.19 ms. Allocated memory was 296.7 MB in the beginning and 996.1 MB in the end (delta: 699.4 MB). Free memory was 256.7 MB in the beginning and 866.8 MB in the end (delta: -610.2 MB). Peak memory consumption was 89.2 MB. Max. memory is 5.3 GB. [2018-01-24 16:29:06,490 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 296.7 MB. Free memory is still 262.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:29:06,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.63 ms. Allocated memory is still 296.7 MB. Free memory was 255.6 MB in the beginning and 244.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:29:06,491 INFO L168 Benchmark]: Boogie Preprocessor took 40.08 ms. Allocated memory is still 296.7 MB. Free memory was 244.7 MB in the beginning and 242.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:29:06,492 INFO L168 Benchmark]: RCFGBuilder took 593.44 ms. Allocated memory is still 296.7 MB. Free memory was 242.6 MB in the beginning and 203.2 MB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 5.3 GB. [2018-01-24 16:29:06,492 INFO L168 Benchmark]: Abstract Interpretation took 5681.61 ms. Allocated memory was 296.7 MB in the beginning and 996.1 MB in the end (delta: 699.4 MB). Free memory was 203.2 MB in the beginning and 866.8 MB in the end (delta: -663.6 MB). Peak memory consumption was 35.8 MB. Max. memory is 5.3 GB. [2018-01-24 16:29:06,494 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 296.7 MB. Free memory is still 262.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 221.63 ms. Allocated memory is still 296.7 MB. Free memory was 255.6 MB in the beginning and 244.7 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 40.08 ms. Allocated memory is still 296.7 MB. Free memory was 244.7 MB in the beginning and 242.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 593.44 ms. Allocated memory is still 296.7 MB. Free memory was 242.6 MB in the beginning and 203.2 MB in the end (delta: 39.4 MB). Peak memory consumption was 39.4 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 5681.61 ms. Allocated memory was 296.7 MB in the beginning and 996.1 MB in the end (delta: 699.4 MB). Free memory was 203.2 MB in the beginning and 866.8 MB in the end (delta: -663.6 MB). Peak memory consumption was 35.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 132 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 1093 LocStat_NO_SUPPORTING_DISEQUALITIES : 226 LocStat_NO_DISJUNCTIONS : -264 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 178 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 301 TransStat_NO_SUPPORTING_DISEQUALITIES : 77 TransStat_NO_DISJUNCTIONS : 227 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.414137 RENAME_VARIABLES(MILLISECONDS) : 0.637200 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.385890 PROJECTAWAY(MILLISECONDS) : 0.503441 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001151 DISJOIN(MILLISECONDS) : 0.466929 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.683089 ADD_EQUALITY(MILLISECONDS) : 0.008829 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.022998 #CONJOIN_DISJUNCTIVE : 1778 #RENAME_VARIABLES : 3860 #UNFREEZE : 0 #CONJOIN : 2490 #PROJECTAWAY : 2097 #ADD_WEAK_EQUALITY : 86 #DISJOIN : 691 #RENAME_VARIABLES_DISJUNCTIVE : 3425 #ADD_EQUALITY : 329 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 64 - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND TRUE c1 < 2 [L640] FCALL item->value = 2 - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND TRUE c1 < 4 [L642] FCALL item->value = c1 + 2 - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND TRUE c1 < 6 [L644] FCALL item->value = 2 * c1 + 4 - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item - UnprovableResult [Line: 628]: 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND TRUE !data [L658] return 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] FCALL data->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] FCALL data->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND FALSE !(data->next != data) [L686] FCALL data->data - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] FCALL data->data - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] FCALL data->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] FCALL data->next->data - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] FCALL data->next->data - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND FALSE !(data->next != data) [L686] EXPR, FCALL data->data [L686] item = data->data [L687] FCALL free(data) [L688] COND TRUE \read(*item) [L689] item2 = item [L690] FCALL item->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND FALSE !(data->next != data) [L686] EXPR, FCALL data->data [L686] item = data->data [L687] FCALL free(data) [L688] COND TRUE \read(*item) [L689] item2 = item [L690] FCALL item->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] FCALL data->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND TRUE \read(*data) [L647] FCALL data->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND TRUE \read(*data) [L647] FCALL data->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND TRUE \read(*data) [L647] EXPR, FCALL data->next [L647] FCALL lItem->next = data->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND FALSE !(data->next != data) [L686] EXPR, FCALL data->data [L686] item = data->data [L687] FCALL free(data) [L688] COND TRUE \read(*item) [L689] item2 = item [L690] EXPR, FCALL item->next [L690] item = item->next [L691] FCALL item2->value - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] FCALL lItem->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND TRUE \read(*data) [L647] EXPR, FCALL data->next [L647] FCALL lItem->next = data->next [L648] FCALL data->next = lItem - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND FALSE !(data->next != data) [L686] EXPR, FCALL data->data [L686] item = data->data [L687] FCALL free(data) [L688] COND TRUE \read(*item) [L689] item2 = item [L690] EXPR, FCALL item->next [L690] item = item->next [L691] EXPR, FCALL item2->value [L691] item2->value > 1 && item2->value < 15 [L691] FCALL item2->value - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND FALSE !(data->next != data) [L686] EXPR, FCALL data->data [L686] item = data->data [L687] FCALL free(data) [L688] COND TRUE \read(*item) [L689] item2 = item [L690] EXPR, FCALL item->next [L690] item = item->next [L691] EXPR, FCALL item2->value [L691] item2->value > 1 && item2->value < 15 [L691] EXPR, FCALL item2->value [L691] item2->value > 1 && item2->value < 15 [L691] COND TRUE item2->value > 1 && item2->value < 15 [L692] FCALL free(item2) - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND TRUE item && item2 [L667] FCALL item->value - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND TRUE item && item2 [L667] FCALL item->value - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND FALSE !(item && item2) [L676] COND TRUE \read(*item) [L677] FCALL *dst = item - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND FALSE !(item && item2) [L676] COND TRUE \read(*item) [L677] FCALL *dst = item - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND TRUE item && item2 [L667] FCALL item->value [L667] FCALL item2->value - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND TRUE item && item2 [L667] FCALL item->value [L667] FCALL item2->value - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND FALSE !(item && item2) [L676] COND FALSE !(\read(*item)) [L679] COND TRUE \read(*item2) [L680] FCALL *dst = item2 - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND FALSE !(item && item2) [L676] COND FALSE !(\read(*item)) [L679] COND TRUE \read(*item2) [L680] FCALL *dst = item2 - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND FALSE !(item && item2) [L676] COND FALSE !(\read(*item)) [L679] COND FALSE !(\read(*item2)) [L683] dst = ((void *)0) [L684] FCALL data->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND FALSE !(item && item2) [L676] COND FALSE !(\read(*item)) [L679] COND FALSE !(\read(*item2)) [L683] dst = ((void *)0) [L684] FCALL data->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND TRUE item && item2 [L667] EXPR, FCALL item->value [L667] EXPR, FCALL item2->value [L667] COND TRUE item->value > item2->value [L668] FCALL *dst = item - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND TRUE item && item2 [L667] EXPR, FCALL item->value [L667] EXPR, FCALL item2->value [L667] COND TRUE item->value > item2->value [L668] FCALL *dst = item - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND TRUE item && item2 [L667] EXPR, FCALL item->value [L667] EXPR, FCALL item2->value [L667] COND FALSE !(item->value > item2->value) [L671] FCALL *dst = item2 - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND TRUE item && item2 [L667] EXPR, FCALL item->value [L667] EXPR, FCALL item2->value [L667] COND FALSE !(item->value > item2->value) [L671] FCALL *dst = item2 - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND TRUE item && item2 [L667] EXPR, FCALL item->value [L667] EXPR, FCALL item2->value [L667] COND TRUE item->value > item2->value [L668] FCALL *dst = item [L669] FCALL item->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND TRUE item && item2 [L667] EXPR, FCALL item->value [L667] EXPR, FCALL item2->value [L667] COND FALSE !(item->value > item2->value) [L671] FCALL *dst = item2 [L672] FCALL item2->next - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND TRUE item && item2 [L667] EXPR, FCALL item->value [L667] EXPR, FCALL item2->value [L667] COND TRUE item->value > item2->value [L668] FCALL *dst = item [L669] EXPR, FCALL item->next [L669] item = item->next [L674] FCALL \read(**dst) - 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: [L629] struct TLItem* data = ((void *)0); [L630] struct DItem* item, * item2; [L631] struct TLItem *lItem; [L632] int c1 = 0; [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND TRUE c1 < 5 && __VERIFIER_nondet_int() [L634] c1++ [L635] EXPR, FCALL malloc(sizeof *item) [L635] item = malloc(sizeof *item) [L636] COND FALSE !(!item) [L638] FCALL item->next = ((void *)0) [L639] COND FALSE !(c1 < 2) [L641] COND FALSE !(c1 < 4) [L643] COND FALSE !(c1 < 6) [L645] EXPR, FCALL malloc(sizeof *lItem) [L645] lItem = malloc(sizeof *lItem) [L646] COND FALSE !(\read(*data)) [L650] FCALL lItem->next = lItem [L651] data = lItem [L653] FCALL lItem->data = item [L654] item = ((void *)0) [L655] lItem = ((void *)0) [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] c1 < 5 && __VERIFIER_nondet_int() [L633] COND FALSE !(c1 < 5 && __VERIFIER_nondet_int()) [L657] COND FALSE !(!data) [L659] EXPR, FCALL data->next [L659] COND TRUE data->next != data [L660] EXPR, FCALL data->data [L660] item = data->data [L661] EXPR, FCALL data->next [L661] EXPR, FCALL data->next->data [L661] item2 = data->next->data [L662] EXPR, FCALL data->next [L662] lItem = data->next [L663] EXPR, FCALL lItem->next [L663] FCALL data->next = lItem->next [L664] FCALL free(lItem) [L665] struct DItem** dst = &data->data; [L666] COND FALSE !(item && item2) [L676] COND FALSE !(\read(*item)) [L679] COND FALSE !(\read(*item2)) [L683] dst = ((void *)0) [L684] EXPR, FCALL data->next [L684] data = data->next [L659] EXPR, FCALL data->next [L659] COND FALSE !(data->next != data) [L686] EXPR, FCALL data->data [L686] item = data->data [L687] FCALL free(data) - 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 - 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: 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]: 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: 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/test-0513_1_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-29-06-507.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0513_1_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-29-06-507.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0513_1_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-29-06-507.csv Received shutdown request...