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/forester-heap/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:32:59,990 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:32:59,992 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:33:00,007 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:33:00,008 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:33:00,009 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:33:00,010 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:33:00,012 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:33:00,013 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:33:00,014 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:33:00,015 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:33:00,015 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:33:00,016 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:33:00,018 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:33:00,019 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:33:00,021 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:33:00,023 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:33:00,025 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:33:00,026 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:33:00,028 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:33:00,030 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:33:00,035 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:33:00,036 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:33:00,036 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 16:33:00,044 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:33:00,045 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:33:00,045 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:33:00,046 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:33:00,046 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:33:00,046 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:33:00,046 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:33:00,046 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:33:00,046 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:33:00,047 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:33:00,047 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:33:00,047 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:33:00,047 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:33:00,047 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:33:00,047 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:33:00,047 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:33:00,048 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:33:00,048 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:33:00,048 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:33:00,048 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:33:00,048 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:33:00,048 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:33:00,048 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:33:00,049 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:33:00,049 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:33:00,049 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:33:00,049 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:33:00,049 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:33:00,050 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:33:00,050 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:33:00,050 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:33:00,050 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:33:00,050 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:33:00,051 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:33:00,051 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:33:00,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:33:00,095 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:33:00,099 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:33:00,100 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:33:00,100 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:33:00,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i [2018-01-24 16:33:00,258 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:33:00,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:33:00,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:33:00,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:33:00,268 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:33:00,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:33:00" (1/1) ... [2018-01-24 16:33:00,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4430c394 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:00, skipping insertion in model container [2018-01-24 16:33:00,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:33:00" (1/1) ... [2018-01-24 16:33:00,285 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:33:00,324 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:33:00,449 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:33:00,472 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:33:00,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:00 WrapperNode [2018-01-24 16:33:00,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:33:00,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:33:00,483 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:33:00,483 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:33:00,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:00" (1/1) ... [2018-01-24 16:33:00,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:00" (1/1) ... [2018-01-24 16:33:00,507 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:00" (1/1) ... [2018-01-24 16:33:00,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:00" (1/1) ... [2018-01-24 16:33:00,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:00" (1/1) ... [2018-01-24 16:33:00,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:00" (1/1) ... [2018-01-24 16:33:00,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:00" (1/1) ... [2018-01-24 16:33:00,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:33:00,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:33:00,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:33:00,526 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:33:00,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:00" (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 16:33:00,588 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:33:00,588 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:33:00,588 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:33:00,589 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 16:33:00,589 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 16:33:00,589 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:33:00,589 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:33:00,589 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:33:00,589 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:33:00,590 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:33:00,590 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 16:33:00,590 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 16:33:00,590 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:33:00,590 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 16:33:00,590 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:33:00,591 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:33:00,591 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:33:01,152 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:33:01,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:33:01 BoogieIcfgContainer [2018-01-24 16:33:01,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:33:01,155 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:33:01,155 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:33:01,156 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:33:01,157 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:33:01" (1/1) ... [2018-01-24 16:33:01,204 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:33:03,652 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:33:03,689 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:33:03,695 INFO L268 AbstractInterpreter]: Visited 147 different actions 560 times. Merged at 102 different actions 288 times. Widened at 1 different actions 1 times. Found 46 fixpoints after 27 different actions. Largest state had 54 variables. [2018-01-24 16:33:03,697 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:33:03,698 INFO L168 Benchmark]: Toolchain (without parser) took 3440.01 ms. Allocated memory was 303.0 MB in the beginning and 685.8 MB in the end (delta: 382.7 MB). Free memory was 263.1 MB in the beginning and 624.7 MB in the end (delta: -361.5 MB). Peak memory consumption was 21.2 MB. Max. memory is 5.3 GB. [2018-01-24 16:33:03,699 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 303.0 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:33:03,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.16 ms. Allocated memory is still 303.0 MB. Free memory was 262.1 MB in the beginning and 250.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:33:03,699 INFO L168 Benchmark]: Boogie Preprocessor took 42.26 ms. Allocated memory is still 303.0 MB. Free memory was 250.1 MB in the beginning and 248.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:33:03,700 INFO L168 Benchmark]: RCFGBuilder took 627.75 ms. Allocated memory is still 303.0 MB. Free memory was 248.1 MB in the beginning and 213.3 MB in the end (delta: 34.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 5.3 GB. [2018-01-24 16:33:03,700 INFO L168 Benchmark]: Abstract Interpretation took 2542.45 ms. Allocated memory was 303.0 MB in the beginning and 685.8 MB in the end (delta: 382.7 MB). Free memory was 213.3 MB in the beginning and 624.7 MB in the end (delta: -411.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:33:03,701 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 303.0 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 219.16 ms. Allocated memory is still 303.0 MB. Free memory was 262.1 MB in the beginning and 250.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 42.26 ms. Allocated memory is still 303.0 MB. Free memory was 250.1 MB in the beginning and 248.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 627.75 ms. Allocated memory is still 303.0 MB. Free memory was 248.1 MB in the beginning and 213.3 MB in the end (delta: 34.8 MB). Peak memory consumption was 34.8 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 2542.45 ms. Allocated memory was 303.0 MB in the beginning and 685.8 MB in the end (delta: 382.7 MB). Free memory was 213.3 MB in the beginning and 624.7 MB in the end (delta: -411.4 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 111 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 1144 LocStat_NO_SUPPORTING_DISEQUALITIES : 347 LocStat_NO_DISJUNCTIONS : -222 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 151 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 226 TransStat_NO_SUPPORTING_DISEQUALITIES : 62 TransStat_NO_DISJUNCTIONS : 177 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.403258 RENAME_VARIABLES(MILLISECONDS) : 0.179737 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.180608 PROJECTAWAY(MILLISECONDS) : 0.029917 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002349 DISJOIN(MILLISECONDS) : 0.755115 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.198827 ADD_EQUALITY(MILLISECONDS) : 0.019915 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008489 #CONJOIN_DISJUNCTIVE : 920 #RENAME_VARIABLES : 1889 #UNFREEZE : 0 #CONJOIN : 1285 #PROJECTAWAY : 1049 #ADD_WEAK_EQUALITY : 100 #DISJOIN : 192 #RENAME_VARIABLES_DISJUNCTIVE : 1742 #ADD_EQUALITY : 280 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 49 - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND TRUE __VERIFIER_nondet_int() [L1000] EXPR, FCALL malloc(sizeof(SLL)) [L1000] FCALL x->next = malloc(sizeof(SLL)) - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND TRUE __VERIFIER_nondet_int() [L1000] EXPR, FCALL malloc(sizeof(SLL)) [L1000] FCALL x->next = malloc(sizeof(SLL)) - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND TRUE __VERIFIER_nondet_int() [L1000] EXPR, FCALL malloc(sizeof(SLL)) [L1000] FCALL x->next = malloc(sizeof(SLL)) [L1001] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND TRUE __VERIFIER_nondet_int() [L1000] EXPR, FCALL malloc(sizeof(SLL)) [L1000] FCALL x->next = malloc(sizeof(SLL)) [L1001] EXPR, FCALL x->next [L1001] FCALL x->next->prev = x - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: abstract domain could reach this error location. Possible FailurePath: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] EXPR, FCALL x->next [L1019] COND FALSE !(x->next != ((void*)0)) [L1026] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND TRUE __VERIFIER_nondet_int() [L1000] EXPR, FCALL malloc(sizeof(SLL)) [L1000] FCALL x->next = malloc(sizeof(SLL)) [L1001] EXPR, FCALL x->next [L1001] FCALL x->next->prev = x [L1002] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] EXPR, FCALL x->next [L1019] COND TRUE x->next != ((void*)0) [L1021] COND FALSE !(__VERIFIER_nondet_int()) [L1022] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND TRUE __VERIFIER_nondet_int() [L1000] EXPR, FCALL malloc(sizeof(SLL)) [L1000] FCALL x->next = malloc(sizeof(SLL)) [L1001] EXPR, FCALL x->next [L1001] FCALL x->next->prev = x [L1002] EXPR, FCALL x->next [L1002] x = x->next [L1003] FCALL x->data = 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND TRUE __VERIFIER_nondet_int() [L1000] EXPR, FCALL malloc(sizeof(SLL)) [L1000] FCALL x->next = malloc(sizeof(SLL)) [L1001] EXPR, FCALL x->next [L1001] FCALL x->next->prev = x [L1002] EXPR, FCALL x->next [L1002] x = x->next [L1003] FCALL x->data = 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] EXPR, FCALL x->next [L1019] COND FALSE !(x->next != ((void*)0)) [L1026] EXPR, FCALL x->next [L1026] SLL* y = x->next; [L1027] EXPR, FCALL malloc(sizeof(SLL)) [L1027] FCALL x->next = malloc(sizeof(SLL)) - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] EXPR, FCALL x->next [L1019] COND FALSE !(x->next != ((void*)0)) [L1026] EXPR, FCALL x->next [L1026] SLL* y = x->next; [L1027] EXPR, FCALL malloc(sizeof(SLL)) [L1027] FCALL x->next = malloc(sizeof(SLL)) - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND TRUE __VERIFIER_nondet_int() [L1000] EXPR, FCALL malloc(sizeof(SLL)) [L1000] FCALL x->next = malloc(sizeof(SLL)) [L1001] EXPR, FCALL x->next [L1001] FCALL x->next->prev = x [L1002] EXPR, FCALL x->next [L1002] x = x->next [L1003] FCALL x->data = 0 [L1004] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] EXPR, FCALL x->next [L1019] COND FALSE !(x->next != ((void*)0)) [L1026] EXPR, FCALL x->next [L1026] SLL* y = x->next; [L1027] EXPR, FCALL malloc(sizeof(SLL)) [L1027] FCALL x->next = malloc(sizeof(SLL)) [L1028] FCALL x->data = 1 - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: abstract domain could reach this error location. Possible FailurePath: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] EXPR, FCALL x->next [L1019] COND TRUE x->next != ((void*)0) [L1021] COND FALSE !(__VERIFIER_nondet_int()) [L1022] EXPR, FCALL x->next [L1022] x = x->next [L1019] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] EXPR, FCALL x->next [L1019] COND FALSE !(x->next != ((void*)0)) [L1026] EXPR, FCALL x->next [L1026] SLL* y = x->next; [L1027] EXPR, FCALL malloc(sizeof(SLL)) [L1027] FCALL x->next = malloc(sizeof(SLL)) [L1028] FCALL x->data = 1 [L1029] FCALL x->next = y - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((void*)0) [L1013] head = x [L1038] x = head [L1041] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((void*)0) [L1013] head = x [L1038] x = head [L1041] EXPR, FCALL x->data [L1041] COND FALSE !(x->data != 1) [L1047] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((void*)0) [L1013] head = x [L1038] x = head [L1041] EXPR, FCALL x->data [L1041] COND TRUE x->data != 1 [L1043] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] EXPR, FCALL x->next [L1019] COND TRUE x->next != ((void*)0) [L1021] COND TRUE __VERIFIER_nondet_int() [L1026] EXPR, FCALL x->next [L1026] SLL* y = x->next; [L1027] EXPR, FCALL malloc(sizeof(SLL)) [L1027] FCALL x->next = malloc(sizeof(SLL)) [L1028] FCALL x->data = 1 [L1029] FCALL x->next = y [L1030] COND TRUE y != ((void*)0) [L1032] FCALL y->prev - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] EXPR, FCALL x->next [L1019] COND TRUE x->next != ((void*)0) [L1021] COND TRUE __VERIFIER_nondet_int() [L1026] EXPR, FCALL x->next [L1026] SLL* y = x->next; [L1027] EXPR, FCALL malloc(sizeof(SLL)) [L1027] FCALL x->next = malloc(sizeof(SLL)) [L1028] FCALL x->data = 1 [L1029] FCALL x->next = y [L1030] COND TRUE y != ((void*)0) [L1032] FCALL y->prev - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] EXPR, FCALL x->next [L1019] COND TRUE x->next != ((void*)0) [L1021] COND TRUE __VERIFIER_nondet_int() [L1026] EXPR, FCALL x->next [L1026] SLL* y = x->next; [L1027] EXPR, FCALL malloc(sizeof(SLL)) [L1027] FCALL x->next = malloc(sizeof(SLL)) [L1028] FCALL x->data = 1 [L1029] FCALL x->next = y [L1030] COND TRUE y != ((void*)0) [L1032] EXPR, FCALL y->prev [L1032] FCALL x->prev = y->prev - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((void*)0) [L1013] head = x [L1038] x = head [L1041] EXPR, FCALL x->data [L1041] COND TRUE x->data != 1 [L1043] EXPR, FCALL x->next [L1043] x = x->next [L1041] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x = head [L1019] EXPR, FCALL x->next [L1019] COND TRUE x->next != ((void*)0) [L1021] COND TRUE __VERIFIER_nondet_int() [L1026] EXPR, FCALL x->next [L1026] SLL* y = x->next; [L1027] EXPR, FCALL malloc(sizeof(SLL)) [L1027] FCALL x->next = malloc(sizeof(SLL)) [L1028] FCALL x->data = 1 [L1029] FCALL x->next = y [L1030] COND TRUE y != ((void*)0) [L1032] EXPR, FCALL y->prev [L1032] FCALL x->prev = y->prev [L1033] FCALL y->prev = x - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((void*)0) [L1013] head = x [L1038] x = head [L1041] EXPR, FCALL x->data [L1041] COND FALSE !(x->data != 1) [L1047] EXPR, FCALL x->next [L1047] x = x->next [L1048] COND TRUE \read(*x) [L1050] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((void*)0) [L1013] head = x [L1038] x = head [L1041] EXPR, FCALL x->data [L1041] COND FALSE !(x->data != 1) [L1047] EXPR, FCALL x->next [L1047] x = x->next [L1048] COND TRUE \read(*x) [L1050] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((void*)0) [L1013] head = x [L1038] x = head [L1041] EXPR, FCALL x->data [L1041] COND FALSE !(x->data != 1) [L1047] EXPR, FCALL x->next [L1047] x = x->next [L1048] COND TRUE \read(*x) [L1050] EXPR, FCALL x->data [L1050] COND FALSE !(x->data == 1) [L1052] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((void*)0) [L1013] head = x [L1038] x = head [L1041] EXPR, FCALL x->data [L1041] COND FALSE !(x->data != 1) [L1047] EXPR, FCALL x->next [L1047] x = x->next [L1048] COND FALSE !(\read(*x)) [L1056] x = head [L1057] COND TRUE x != ((void*)0) [L1059] head = x [L1060] FCALL x->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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((void*)0) [L1013] head = x [L1038] x = head [L1041] EXPR, FCALL x->data [L1041] COND FALSE !(x->data != 1) [L1047] EXPR, FCALL x->next [L1047] x = x->next [L1048] COND FALSE !(\read(*x)) [L1056] x = head [L1057] COND TRUE x != ((void*)0) [L1059] head = x [L1060] EXPR, FCALL x->next [L1060] x = x->next [L1061] FCALL free(head) [L1057] COND TRUE x != ((void*)0) [L1059] head = x [L1060] FCALL x->next - UnprovableResult [Line: 986]: 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((void*)0) [L1013] head = x [L1038] x = head [L1041] EXPR, FCALL x->data [L1041] COND FALSE !(x->data != 1) [L1047] EXPR, FCALL x->next [L1047] x = x->next [L1048] COND FALSE !(\read(*x)) [L1056] x = head [L1057] COND TRUE x != ((void*)0) [L1059] head = x [L1060] EXPR, FCALL x->next [L1060] x = x->next [L1061] FCALL free(head) [L1057] COND FALSE !(x != ((void*)0)) [L1064] return 0; - 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: [L989] EXPR, FCALL malloc(sizeof(SLL)) [L989] SLL* head = malloc(sizeof(SLL)); [L990] FCALL head->next = ((void*)0) [L991] FCALL head->prev = ((void*)0) [L992] FCALL head->data = 0 [L994] SLL* x = head; [L997] COND FALSE !(__VERIFIER_nondet_int()) [L1008] COND TRUE __VERIFIER_nondet_int() [L1009] EXPR, FCALL malloc(sizeof(SLL)) [L1009] x = malloc(sizeof(SLL)) [L1010] FCALL x->data = 1 [L1011] FCALL x->next = head [L1012] FCALL x->prev = ((void*)0) [L1013] head = x [L1038] x = head [L1041] EXPR, FCALL x->data [L1041] COND FALSE !(x->data != 1) [L1047] EXPR, FCALL x->next [L1047] x = x->next [L1048] COND FALSE !(\read(*x)) [L1056] x = head [L1057] COND TRUE x != ((void*)0) [L1059] head = x [L1060] EXPR, FCALL x->next [L1060] x = x->next [L1061] FCALL free(head) [L1057] COND TRUE x != ((void*)0) [L1059] head = x [L1060] EXPR, FCALL x->next [L1060] x = x->next [L1061] FCALL free(head) [L1057] COND TRUE x != ((void*)0) [L1059] head = x [L1060] EXPR, FCALL x->next [L1060] x = x->next [L1061] FCALL free(head) - 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]: 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/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-33-03-712.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-33-03-712.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-simple-white-blue_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-33-03-712.csv Received shutdown request...