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/memsafety/test-0232_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:24:43,661 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:24:43,663 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:24:43,675 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:24:43,675 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:24:43,676 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:24:43,677 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:24:43,679 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:24:43,681 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:24:43,682 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:24:43,682 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:24:43,682 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:24:43,683 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:24:43,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:24:43,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:24:43,687 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:24:43,689 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:24:43,690 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:24:43,692 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:24:43,693 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:24:43,695 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:24:43,699 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:24:43,699 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:24:43,700 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 16:24:43,709 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:24:43,709 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:24:43,710 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:24:43,710 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:24:43,711 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:24:43,711 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:24:43,711 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:24:43,711 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:24:43,712 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:24:43,712 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:24:43,712 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:24:43,712 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:24:43,713 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:24:43,713 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:24:43,713 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:24:43,713 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:24:43,713 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:24:43,714 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:24:43,714 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:24:43,714 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:24:43,714 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:24:43,714 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:24:43,714 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:24:43,715 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:24:43,715 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:24:43,715 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:24:43,715 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:24:43,715 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:24:43,716 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:24:43,716 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:24:43,716 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:24:43,716 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:24:43,716 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:24:43,717 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:24:43,717 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:24:43,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:24:43,762 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:24:43,766 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:24:43,767 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:24:43,768 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:24:43,768 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/test-0232_false-valid-memtrack.i [2018-01-24 16:24:43,925 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:24:43,932 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:24:43,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:24:43,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:24:43,941 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:24:43,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:24:43" (1/1) ... [2018-01-24 16:24:43,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d17d7d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:24:43, skipping insertion in model container [2018-01-24 16:24:43,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:24:43" (1/1) ... [2018-01-24 16:24:43,964 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:24:44,004 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:24:44,120 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:24:44,136 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:24:44,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:24:44 WrapperNode [2018-01-24 16:24:44,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:24:44,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:24:44,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:24:44,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:24:44,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:24:44" (1/1) ... [2018-01-24 16:24:44,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:24:44" (1/1) ... [2018-01-24 16:24:44,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:24:44" (1/1) ... [2018-01-24 16:24:44,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:24:44" (1/1) ... [2018-01-24 16:24:44,174 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:24:44" (1/1) ... [2018-01-24 16:24:44,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:24:44" (1/1) ... [2018-01-24 16:24:44,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:24:44" (1/1) ... [2018-01-24 16:24:44,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:24:44,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:24:44,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:24:44,180 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:24:44,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:24:44" (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 16:24:44,226 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:24:44,227 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:24:44,227 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-24 16:24:44,227 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:24:44,227 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 16:24:44,227 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 16:24:44,227 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:24:44,227 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:24:44,227 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:24:44,227 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 16:24:44,228 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 16:24:44,228 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:24:44,228 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-24 16:24:44,228 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:24:44,228 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:24:44,228 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:24:44,603 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:24:44,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:24:44 BoogieIcfgContainer [2018-01-24 16:24:44,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:24:44,604 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:24:44,605 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:24:44,605 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:24:44,605 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:24:44" (1/1) ... [2018-01-24 16:24:44,648 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:24:45,904 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:24:45,944 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:24:45,953 INFO L268 AbstractInterpreter]: Visited 101 different actions 199 times. Merged at 33 different actions 57 times. Never widened. Found 7 fixpoints after 5 different actions. Largest state had 36 variables. [2018-01-24 16:24:45,955 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:24:45,956 INFO L168 Benchmark]: Toolchain (without parser) took 2030.82 ms. Allocated memory was 302.0 MB in the beginning and 378.0 MB in the end (delta: 76.0 MB). Free memory was 261.9 MB in the beginning and 177.3 MB in the end (delta: 84.5 MB). Peak memory consumption was 160.6 MB. Max. memory is 5.3 GB. [2018-01-24 16:24:45,957 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 267.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:24:45,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 210.16 ms. Allocated memory is still 302.0 MB. Free memory was 260.9 MB in the beginning and 250.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:24:45,958 INFO L168 Benchmark]: Boogie Preprocessor took 36.28 ms. Allocated memory is still 302.0 MB. Free memory was 250.9 MB in the beginning and 248.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:24:45,958 INFO L168 Benchmark]: RCFGBuilder took 424.23 ms. Allocated memory is still 302.0 MB. Free memory was 248.9 MB in the beginning and 221.8 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 5.3 GB. [2018-01-24 16:24:45,958 INFO L168 Benchmark]: Abstract Interpretation took 1350.77 ms. Allocated memory was 302.0 MB in the beginning and 378.0 MB in the end (delta: 76.0 MB). Free memory was 221.8 MB in the beginning and 177.3 MB in the end (delta: 44.5 MB). Peak memory consumption was 120.5 MB. Max. memory is 5.3 GB. [2018-01-24 16:24:45,960 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 302.0 MB. Free memory is still 267.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 210.16 ms. Allocated memory is still 302.0 MB. Free memory was 260.9 MB in the beginning and 250.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.28 ms. Allocated memory is still 302.0 MB. Free memory was 250.9 MB in the beginning and 248.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 424.23 ms. Allocated memory is still 302.0 MB. Free memory was 248.9 MB in the beginning and 221.8 MB in the end (delta: 27.1 MB). Peak memory consumption was 27.1 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 1350.77 ms. Allocated memory was 302.0 MB in the beginning and 378.0 MB in the end (delta: 76.0 MB). Free memory was 221.8 MB in the beginning and 177.3 MB in the end (delta: 44.5 MB). Peak memory consumption was 120.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 81 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 1030 LocStat_NO_SUPPORTING_DISEQUALITIES : 448 LocStat_NO_DISJUNCTIONS : -162 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 107 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 180 TransStat_NO_SUPPORTING_DISEQUALITIES : 48 TransStat_NO_DISJUNCTIONS : 132 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.695726 RENAME_VARIABLES(MILLISECONDS) : 0.373922 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.301803 PROJECTAWAY(MILLISECONDS) : 0.067599 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001244 DISJOIN(MILLISECONDS) : 1.203698 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.407750 ADD_EQUALITY(MILLISECONDS) : 0.031791 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.026698 #CONJOIN_DISJUNCTIVE : 323 #RENAME_VARIABLES : 677 #UNFREEZE : 0 #CONJOIN : 584 #PROJECTAWAY : 471 #ADD_WEAK_EQUALITY : 34 #DISJOIN : 108 #RENAME_VARIABLES_DISJUNCTIVE : 610 #ADD_EQUALITY : 176 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 37 - 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: [L635] FCALL struct item *list = ((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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] FCALL \read(**plist) - 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] FCALL \read(**plist) - 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist - 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] FCALL *plist = 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] FCALL *plist = 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) - 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] FCALL \read(*list) - 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] FCALL list->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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] FCALL \read(*list) - 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] EXPR, FCALL \read(*list) [L641] FCALL free(list) [L642] FCALL list = 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] EXPR, FCALL \read(*list) [L641] FCALL free(list) [L642] FCALL list = 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] EXPR, FCALL \read(*list) [L641] FCALL free(list) [L642] FCALL list = next [L644] FCALL \read(*list) - 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND TRUE __VERIFIER_nondet_int() [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND TRUE (item->next) ? item->next->data : malloc(sizeof *item) [L629] 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND TRUE __VERIFIER_nondet_int() [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND TRUE (item->next) ? item->next->data : malloc(sizeof *item) [L629] EXPR, FCALL item->next [L629] FCALL item->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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND TRUE __VERIFIER_nondet_int() [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND TRUE (item->next) ? item->next->data : malloc(sizeof *item) [L629] EXPR, FCALL item->next [L629] FCALL item->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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] EXPR, FCALL \read(*list) [L641] FCALL free(list) [L642] FCALL list = next [L644] FCALL \read(*list) [L644] COND TRUE \read(*list) [L645] FCALL \read(*list) - 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] EXPR, FCALL \read(*list) [L641] FCALL free(list) [L642] FCALL list = next [L644] FCALL \read(*list) [L644] COND TRUE \read(*list) [L645] EXPR, FCALL \read(*list) [L645] FCALL list->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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] EXPR, FCALL \read(*list) [L641] FCALL free(list) [L642] FCALL list = next [L644] FCALL \read(*list) [L644] COND TRUE \read(*list) [L645] EXPR, FCALL \read(*list) [L645] FCALL list->next - UnprovableResult [Line: 633]: 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] EXPR, FCALL \read(*list) [L641] FCALL free(list) [L642] FCALL list = next [L644] FCALL \read(*list) [L644] COND FALSE !(\read(*list)) [L649] return 0; [L635] FCALL struct item *list = ((void *)0); [L649] 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] EXPR, FCALL \read(*list) [L641] FCALL free(list) [L642] FCALL list = next [L644] FCALL \read(*list) [L644] COND TRUE \read(*list) [L645] EXPR, FCALL \read(*list) [L645] EXPR, FCALL list->next [L645] struct item *next = list->next; [L646] FCALL \read(*list) - 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] EXPR, FCALL \read(*list) [L641] FCALL free(list) [L642] FCALL list = next [L644] FCALL \read(*list) [L644] COND TRUE \read(*list) [L645] EXPR, FCALL \read(*list) [L645] EXPR, FCALL list->next [L645] struct item *next = list->next; [L646] EXPR, FCALL \read(*list) [L646] FCALL free(list) - 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] EXPR, FCALL \read(*list) [L641] FCALL free(list) [L642] FCALL list = next [L644] FCALL \read(*list) [L644] COND TRUE \read(*list) [L645] EXPR, FCALL \read(*list) [L645] EXPR, FCALL list->next [L645] struct item *next = list->next; [L646] EXPR, FCALL \read(*list) [L646] FCALL free(list) [L647] FCALL list = 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: [L635] FCALL struct item *list = ((void *)0); [L637] CALL append(&list) [L626] EXPR, FCALL malloc(sizeof *item) [L626] struct item *item = malloc(sizeof *item); [L627] EXPR, FCALL \read(**plist) [L627] FCALL item->next = *plist [L628] EXPR, FCALL item->next [L628-L630] COND FALSE, EXPR !((item->next) ? item->next->data : malloc(sizeof *item)) [L630] EXPR, FCALL malloc(sizeof *item) [L628-L630] EXPR (item->next) ? item->next->data : malloc(sizeof *item) [L628-L630] FCALL item->data = (item->next) ? item->next->data : malloc(sizeof *item) [L631] RET, FCALL *plist = item [L637] append(&list) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L639] FCALL \read(*list) [L639] COND TRUE \read(*list) [L640] EXPR, FCALL \read(*list) [L640] EXPR, FCALL list->next [L640] struct item *next = list->next; [L641] EXPR, FCALL \read(*list) [L641] FCALL free(list) [L642] FCALL list = next [L644] FCALL \read(*list) [L644] COND TRUE \read(*list) [L645] EXPR, FCALL \read(*list) [L645] EXPR, FCALL list->next [L645] struct item *next = list->next; [L646] EXPR, FCALL \read(*list) [L646] FCALL free(list) [L647] FCALL list = next - 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]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - 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 * 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-0232_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-24-45-974.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-24-45-974.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/test-0232_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-24-45-974.csv Received shutdown request...