java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AbstractInterpretationC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:33:15,428 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:33:15,429 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:33:15,445 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:33:15,445 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:33:15,446 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:33:15,447 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:33:15,449 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:33:15,451 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:33:15,452 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:33:15,452 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:33:15,453 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:33:15,454 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:33:15,455 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:33:15,456 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:33:15,458 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:33:15,460 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:33:15,463 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:33:15,464 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:33:15,465 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:33:15,467 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:33:15,473 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:33:15,473 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:33:15,474 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 16:33:15,482 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:33:15,483 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:33:15,484 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:33:15,484 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:33:15,484 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:33:15,484 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:33:15,484 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:33:15,484 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:33:15,485 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:33:15,485 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:33:15,485 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:33:15,485 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:33:15,485 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:33:15,485 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:33:15,485 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:33:15,486 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:33:15,486 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:33:15,486 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:33:15,486 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:33:15,486 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:33:15,486 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:33:15,486 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:33:15,487 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:33:15,487 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:33:15,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:33:15,487 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:33:15,487 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:33:15,488 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:33:15,488 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:33:15,488 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:33:15,488 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:33:15,488 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:33:15,488 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:33:15,489 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:33:15,489 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:33:15,521 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:33:15,532 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:33:15,535 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:33:15,537 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:33:15,537 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:33:15,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag_true-unreach-call_false-valid-memtrack.i [2018-01-24 16:33:15,709 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:33:15,714 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:33:15,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:33:15,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:33:15,721 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:33:15,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:33:15" (1/1) ... [2018-01-24 16:33:15,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233fb010 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:15, skipping insertion in model container [2018-01-24 16:33:15,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:33:15" (1/1) ... [2018-01-24 16:33:15,738 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:33:15,777 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:33:15,902 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:33:15,922 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:33:15,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:15 WrapperNode [2018-01-24 16:33:15,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:33:15,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:33:15,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:33:15,933 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:33:15,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:15" (1/1) ... [2018-01-24 16:33:15,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:15" (1/1) ... [2018-01-24 16:33:15,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:15" (1/1) ... [2018-01-24 16:33:15,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:15" (1/1) ... [2018-01-24 16:33:15,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:15" (1/1) ... [2018-01-24 16:33:15,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:15" (1/1) ... [2018-01-24 16:33:15,971 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:15" (1/1) ... [2018-01-24 16:33:15,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:33:15,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:33:15,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:33:15,974 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:33:15,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:33:15" (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 16:33:16,028 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:33:16,029 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:33:16,029 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-24 16:33:16,029 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:33:16,029 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 16:33:16,029 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 16:33:16,030 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:33:16,030 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:33:16,030 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:33:16,030 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:33:16,030 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:33:16,030 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-24 16:33:16,031 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:33:16,031 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 16:33:16,031 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-24 16:33:16,031 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:33:16,031 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:33:16,031 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:33:16,294 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:33:16,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:33:16 BoogieIcfgContainer [2018-01-24 16:33:16,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:33:16,296 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:33:16,296 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:33:16,296 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:33:16,297 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:33:16" (1/1) ... [2018-01-24 16:33:16,339 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:33:18,071 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:33:18,098 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:33:18,109 INFO L268 AbstractInterpreter]: Visited 73 different actions 346 times. Merged at 50 different actions 191 times. Widened at 1 different actions 1 times. Found 26 fixpoints after 20 different actions. Largest state had 37 variables. [2018-01-24 16:33:18,112 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:33:18,113 INFO L168 Benchmark]: Toolchain (without parser) took 2403.36 ms. Allocated memory was 304.6 MB in the beginning and 391.1 MB in the end (delta: 86.5 MB). Free memory was 264.7 MB in the beginning and 259.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 91.7 MB. Max. memory is 5.3 GB. [2018-01-24 16:33:18,114 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 304.6 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:33:18,114 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.01 ms. Allocated memory is still 304.6 MB. Free memory was 263.7 MB in the beginning and 253.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:33:18,115 INFO L168 Benchmark]: Boogie Preprocessor took 41.21 ms. Allocated memory is still 304.6 MB. Free memory was 253.6 MB in the beginning and 251.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:33:18,115 INFO L168 Benchmark]: RCFGBuilder took 321.05 ms. Allocated memory is still 304.6 MB. Free memory was 251.6 MB in the beginning and 229.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 5.3 GB. [2018-01-24 16:33:18,116 INFO L168 Benchmark]: Abstract Interpretation took 1816.41 ms. Allocated memory was 304.6 MB in the beginning and 391.1 MB in the end (delta: 86.5 MB). Free memory was 229.8 MB in the beginning and 259.4 MB in the end (delta: -29.6 MB). Peak memory consumption was 56.9 MB. Max. memory is 5.3 GB. [2018-01-24 16:33:18,117 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 304.6 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 217.01 ms. Allocated memory is still 304.6 MB. Free memory was 263.7 MB in the beginning and 253.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 41.21 ms. Allocated memory is still 304.6 MB. Free memory was 253.6 MB in the beginning and 251.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 321.05 ms. Allocated memory is still 304.6 MB. Free memory was 251.6 MB in the beginning and 229.8 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 1816.41 ms. Allocated memory was 304.6 MB in the beginning and 391.1 MB in the end (delta: 86.5 MB). Free memory was 229.8 MB in the beginning and 259.4 MB in the end (delta: -29.6 MB). Peak memory consumption was 56.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 58 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 561 LocStat_NO_SUPPORTING_DISEQUALITIES : 198 LocStat_NO_DISJUNCTIONS : -116 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 77 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 98 TransStat_NO_SUPPORTING_DISEQUALITIES : 29 TransStat_NO_DISJUNCTIONS : 85 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.782917 RENAME_VARIABLES(MILLISECONDS) : 0.266874 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.351809 PROJECTAWAY(MILLISECONDS) : 0.047498 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001877 DISJOIN(MILLISECONDS) : 0.470191 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.295742 ADD_EQUALITY(MILLISECONDS) : 0.023158 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.025768 #CONJOIN_DISJUNCTIVE : 555 #RENAME_VARIABLES : 1128 #UNFREEZE : 0 #CONJOIN : 690 #PROJECTAWAY : 582 #ADD_WEAK_EQUALITY : 29 #DISJOIN : 125 #RENAME_VARIABLES_DISJUNCTIVE : 1064 #ADD_EQUALITY : 117 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 23 - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND TRUE \read(flag) [L634] FCALL p->h = 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND FALSE !(\read(flag)) [L636] FCALL p->h = 2 - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: abstract domain could reach this error location. Possible FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 [L644] p = a [L645] COND FALSE !(\read(flag)) [L649] FCALL p->h - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 [L644] p = a [L645] COND TRUE \read(flag) [L646] FCALL p->h - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND TRUE \read(flag) [L634] FCALL p->h = 1 [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] FCALL p->n = t - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND TRUE \read(flag) [L634] FCALL p->h = 1 [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] FCALL p->n = t - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 [L644] p = a [L645] COND FALSE !(\read(flag)) [L649] EXPR, FCALL p->h [L649] COND FALSE !(p->h == 2) [L651] FCALL p->h - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND TRUE \read(flag) [L634] FCALL p->h = 1 [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] FCALL p->n = t [L641] FCALL p->n - UnprovableResult [Line: 626]: 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 [L644] p = a [L645] COND FALSE !(\read(flag)) [L649] EXPR, FCALL p->h [L649] COND FALSE !(p->h == 2) [L651] EXPR, FCALL p->h [L651] COND FALSE !(p->h != 3) - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND FALSE !(\read(flag)) [L636] FCALL p->h = 2 [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] FCALL p->n = t [L641] EXPR, FCALL p->n [L641] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND FALSE !(\read(flag)) [L636] FCALL p->h = 2 [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] FCALL p->n = t [L641] EXPR, FCALL p->n [L641] p = p->n [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND TRUE \read(flag) [L634] FCALL p->h = 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND FALSE !(\read(flag)) [L636] FCALL p->h = 2 [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] FCALL p->n = t [L641] EXPR, FCALL p->n [L641] p = p->n [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND FALSE !(\read(flag)) [L636] FCALL p->h = 2 - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: abstract domain could reach this error location. Possible FailurePath: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND TRUE \read(flag) [L634] FCALL p->h = 1 [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] FCALL p->n = t [L641] EXPR, FCALL p->n [L641] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 [L644] p = a [L645] COND TRUE \read(flag) [L646] EXPR, FCALL p->h [L646] COND TRUE p->h == 1 [L647] FCALL p->n - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND FALSE !(\read(flag)) [L636] FCALL p->h = 2 [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] FCALL p->n = t [L641] EXPR, FCALL p->n [L641] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 [L644] p = a [L645] COND FALSE !(\read(flag)) [L649] EXPR, FCALL p->h [L649] COND TRUE p->h == 2 [L650] FCALL p->n - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND TRUE \read(flag) [L634] FCALL p->h = 1 [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] FCALL p->n = t [L641] EXPR, FCALL p->n [L641] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 [L644] p = a [L645] COND TRUE \read(flag) [L646] EXPR, FCALL p->h [L646] COND TRUE p->h == 1 [L647] EXPR, FCALL p->n [L647] p = p->n [L646] FCALL p->h - 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: [L627] int flag = __VERIFIER_nondet_int(); [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) [L629] a = (List) malloc(sizeof(struct node)) [L630] COND FALSE !(a == 0) [L631] p = a [L632] COND TRUE __VERIFIER_nondet_int() [L633] COND FALSE !(\read(flag)) [L636] FCALL p->h = 2 [L638] EXPR, FCALL malloc(sizeof(struct node)) [L638] t = (List) malloc(sizeof(struct node)) [L639] COND FALSE !(t == 0) [L640] FCALL p->n = t [L641] EXPR, FCALL p->n [L641] p = p->n [L632] COND FALSE !(__VERIFIER_nondet_int()) [L643] FCALL p->h = 3 [L644] p = a [L645] COND FALSE !(\read(flag)) [L649] EXPR, FCALL p->h [L649] COND TRUE p->h == 2 [L650] EXPR, FCALL p->n [L650] p = p->n [L649] FCALL p->h - 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/list_flag_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-33-18-130.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list_flag_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-33-18-130.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list_flag_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-33-18-130.csv Received shutdown request...