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/sll-queue_true-unreach-call_true-valid-memsafety.i


--------------------------------------------------------------------------------


This is Ultimate 0.1.23-6b94a2f
[2018-01-24 16:34:32,573 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-01-24 16:34:32,575 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-01-24 16:34:32,593 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-01-24 16:34:32,593 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-01-24 16:34:32,594 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-01-24 16:34:32,595 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-01-24 16:34:32,597 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-01-24 16:34:32,599 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-01-24 16:34:32,600 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-01-24 16:34:32,601 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-01-24 16:34:32,601 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-01-24 16:34:32,602 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-01-24 16:34:32,604 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-01-24 16:34:32,605 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-01-24 16:34:32,608 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-01-24 16:34:32,610 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-01-24 16:34:32,612 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-01-24 16:34:32,613 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-01-24 16:34:32,615 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-01-24 16:34:32,617 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-01-24 16:34:32,618 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-01-24 16:34:32,618 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-01-24 16:34:32,619 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-01-24 16:34:32,620 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-01-24 16:34:32,621 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-01-24 16:34:32,621 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-01-24 16:34:32,622 INFO  L177        SettingsManager]: PEA to Boogie provides no preferences, ignoring...
[2018-01-24 16:34:32,622 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-01-24 16:34:32,622 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-01-24 16:34:32,623 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-01-24 16:34:32,623 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 16:34:32,634 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-01-24 16:34:32,634 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-01-24 16:34:32,635 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-01-24 16:34:32,635 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-01-24 16:34:32,636 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-01-24 16:34:32,636 INFO  L133        SettingsManager]:  * Deactivate Weak Equivalences=true
[2018-01-24 16:34:32,636 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=VPDomain
[2018-01-24 16:34:32,636 INFO  L133        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2018-01-24 16:34:32,637 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-01-24 16:34:32,637 INFO  L133        SettingsManager]:  * sizeof long=4
[2018-01-24 16:34:32,637 INFO  L133        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2018-01-24 16:34:32,637 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-01-24 16:34:32,638 INFO  L133        SettingsManager]:  * sizeof POINTER=4
[2018-01-24 16:34:32,638 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-01-24 16:34:32,638 INFO  L133        SettingsManager]:  * Check for the main procedure if all allocated memory was freed=true
[2018-01-24 16:34:32,638 INFO  L133        SettingsManager]:  * Bitprecise bitfields=true
[2018-01-24 16:34:32,638 INFO  L133        SettingsManager]:  * SV-COMP memtrack compatibility mode=true
[2018-01-24 16:34:32,638 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-01-24 16:34:32,639 INFO  L133        SettingsManager]:  * sizeof long double=12
[2018-01-24 16:34:32,639 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-01-24 16:34:32,639 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-01-24 16:34:32,639 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-01-24 16:34:32,639 INFO  L133        SettingsManager]:  * Add additional assume for each assert=false
[2018-01-24 16:34:32,640 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-01-24 16:34:32,640 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-01-24 16:34:32,640 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-01-24 16:34:32,640 INFO  L133        SettingsManager]:  * Interpolant automaton=TWOTRACK
[2018-01-24 16:34:32,640 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-01-24 16:34:32,641 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-01-24 16:34:32,641 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-01-24 16:34:32,641 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-01-24 16:34:32,641 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-01-24 16:34:32,641 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-01-24 16:34:32,642 INFO  L131        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2018-01-24 16:34:32,642 INFO  L133        SettingsManager]:  * TransformationType=HEAP_SEPARATOR
[2018-01-24 16:34:32,679 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-01-24 16:34:32,693 INFO  L266   ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized
[2018-01-24 16:34:32,697 INFO  L222   ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected.
[2018-01-24 16:34:32,699 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-01-24 16:34:32,699 INFO  L276        PluginConnector]: CDTParser initialized
[2018-01-24 16:34:32,700 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-queue_true-unreach-call_true-valid-memsafety.i
[2018-01-24 16:34:32,887 INFO  L304   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-01-24 16:34:32,893 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2018-01-24 16:34:32,894 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-01-24 16:34:32,894 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-01-24 16:34:32,898 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-01-24 16:34:32,899 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:34:32" (1/1) ...
[2018-01-24 16:34:32,902 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b6da95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:32, skipping insertion in model container
[2018-01-24 16:34:32,902 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:34:32" (1/1) ...
[2018-01-24 16:34:32,921 INFO  L153             Dispatcher]: Using SV-COMP mode
[2018-01-24 16:34:32,966 INFO  L153             Dispatcher]: Using SV-COMP mode
[2018-01-24 16:34:33,092 INFO  L450          PostProcessor]: Settings: Checked method=main
[2018-01-24 16:34:33,116 INFO  L450          PostProcessor]: Settings: Checked method=main
[2018-01-24 16:34:33,127 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33 WrapperNode
[2018-01-24 16:34:33,127 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-01-24 16:34:33,128 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-01-24 16:34:33,129 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-01-24 16:34:33,129 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-01-24 16:34:33,143 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ...
[2018-01-24 16:34:33,143 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ...
[2018-01-24 16:34:33,154 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ...
[2018-01-24 16:34:33,154 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ...
[2018-01-24 16:34:33,161 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ...
[2018-01-24 16:34:33,169 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ...
[2018-01-24 16:34:33,171 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (1/1) ...
[2018-01-24 16:34:33,173 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-01-24 16:34:33,174 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-01-24 16:34:33,174 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-01-24 16:34:33,174 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-01-24 16:34:33,175 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:33" (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 16:34:33,230 INFO  L136     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-01-24 16:34:33,230 INFO  L136     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-01-24 16:34:33,231 INFO  L136     BoogieDeclarations]: Found implementation of procedure main
[2018-01-24 16:34:33,231 INFO  L128     BoogieDeclarations]: Found specification of procedure write~int
[2018-01-24 16:34:33,231 INFO  L128     BoogieDeclarations]: Found specification of procedure read~int
[2018-01-24 16:34:33,231 INFO  L128     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2018-01-24 16:34:33,231 INFO  L128     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2018-01-24 16:34:33,231 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.free
[2018-01-24 16:34:33,231 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2018-01-24 16:34:33,231 INFO  L128     BoogieDeclarations]: Found specification of procedure #Ultimate.alloc
[2018-01-24 16:34:33,231 INFO  L128     BoogieDeclarations]: Found specification of procedure malloc
[2018-01-24 16:34:33,232 INFO  L128     BoogieDeclarations]: Found specification of procedure free
[2018-01-24 16:34:33,232 INFO  L128     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2018-01-24 16:34:33,232 INFO  L128     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2018-01-24 16:34:33,232 INFO  L128     BoogieDeclarations]: Found specification of procedure main
[2018-01-24 16:34:33,232 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-01-24 16:34:33,232 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-01-24 16:34:33,821 INFO  L257             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-01-24 16:34:33,822 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:34:33 BoogieIcfgContainer
[2018-01-24 16:34:33,822 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-01-24 16:34:33,822 INFO  L113        PluginConnector]: ------------------------Abstract Interpretation----------------------------
[2018-01-24 16:34:33,823 INFO  L271        PluginConnector]: Initializing Abstract Interpretation...
[2018-01-24 16:34:33,823 INFO  L276        PluginConnector]: Abstract Interpretation initialized
[2018-01-24 16:34:33,824 INFO  L185        PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:34:33" (1/1) ...
[2018-01-24 16:34:33,868 INFO  L101         FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2)
[2018-01-24 16:34:38,484 INFO  L259    AbstractInterpreter]: Some error location(s) were reachable
[2018-01-24 16:34:38,505 WARN  L343   cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true)
[2018-01-24 16:34:38,542 INFO  L268    AbstractInterpreter]: Visited 217 different actions 792 times. Merged at 100 different actions 370 times. Widened at 7 different actions 12 times. Found 63 fixpoints after 29 different actions. Largest state had 64 variables.
[2018-01-24 16:34:38,544 INFO  L132        PluginConnector]: ------------------------ END Abstract Interpretation----------------------------
[2018-01-24 16:34:38,545 INFO  L168              Benchmark]: Toolchain (without parser) took 5658.10 ms. Allocated memory was 306.7 MB in the beginning and 790.1 MB in the end (delta: 483.4 MB). Free memory was 265.6 MB in the beginning and 672.5 MB in the end (delta: -406.9 MB). Peak memory consumption was 76.5 MB. Max. memory is 5.3 GB.
[2018-01-24 16:34:38,546 INFO  L168              Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 306.7 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 5.3 GB.
[2018-01-24 16:34:38,546 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 234.34 ms. Allocated memory is still 306.7 MB. Free memory was 265.6 MB in the beginning and 253.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB.
[2018-01-24 16:34:38,547 INFO  L168              Benchmark]: Boogie Preprocessor took 45.17 ms. Allocated memory is still 306.7 MB. Free memory was 253.7 MB in the beginning and 249.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB.
[2018-01-24 16:34:38,547 INFO  L168              Benchmark]: RCFGBuilder took 648.01 ms. Allocated memory is still 306.7 MB. Free memory was 249.7 MB in the beginning and 210.7 MB in the end (delta: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 5.3 GB.
[2018-01-24 16:34:38,547 INFO  L168              Benchmark]: Abstract Interpretation took 4722.15 ms. Allocated memory was 306.7 MB in the beginning and 790.1 MB in the end (delta: 483.4 MB). Free memory was 210.7 MB in the beginning and 672.5 MB in the end (delta: -461.8 MB). Peak memory consumption was 21.6 MB. Max. memory is 5.3 GB.
[2018-01-24 16:34:38,549 INFO  L344   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.20 ms. Allocated memory is still 306.7 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 5.3 GB.
 * CACSL2BoogieTranslator took 234.34 ms. Allocated memory is still 306.7 MB. Free memory was 265.6 MB in the beginning and 253.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB.
 * Boogie Preprocessor took 45.17 ms. Allocated memory is still 306.7 MB. Free memory was 253.7 MB in the beginning and 249.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB.
 * RCFGBuilder took 648.01 ms. Allocated memory is still 306.7 MB. Free memory was 249.7 MB in the beginning and 210.7 MB in the end (delta: 38.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 5.3 GB.
 * Abstract Interpretation took 4722.15 ms. Allocated memory was 306.7 MB in the beginning and 790.1 MB in the end (delta: 483.4 MB). Free memory was 210.7 MB in the beginning and 672.5 MB in the end (delta: -461.8 MB). Peak memory consumption was 21.6 MB. Max. memory is 5.3 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2:
  - StatisticsResult: ArrayEqualityDomainStatistics
    
#Locations                               :     146 
LocStat_MAX_WEQGRAPH_SIZE                :       0 
LocStat_MAX_SIZEOF_WEQEDGELABEL          :       0 
LocStat_NO_SUPPORTING_EQUALITIES         :    1806 
LocStat_NO_SUPPORTING_DISEQUALITIES      :     580 
LocStat_NO_DISJUNCTIONS                  :    -292 
LocStat_MAX_NO_DISJUNCTIONS              :      -1 
#Transitions                             :     221 
TransStat_MAX_WEQGRAPH_SIZE              :       0 
TransStat_MAX_SIZEOF_WEQEDGELABEL        :       0 
TransStat_NO_SUPPORTING_EQUALITIES       :     220 
TransStat_NO_SUPPORTING_DISEQUALITIES    :      76 
TransStat_NO_DISJUNCTIONS                :     223 
TransStat_MAX_NO_DISJUNCTIONS            :       4 

  - StatisticsResult: EqConstraintFactoryStatistics
    
CONJOIN_DISJUNCTIVE(MILLISECONDS)        : 0.133369 
RENAME_VARIABLES(MILLISECONDS)           : 0.232304 
UNFREEZE(MILLISECONDS)                   : 0.000000 
CONJOIN(MILLISECONDS)                    : 0.118850 
PROJECTAWAY(MILLISECONDS)                : 0.050607 
ADD_WEAK_EQUALITY(MILLISECONDS)          : 0.001028 
DISJOIN(MILLISECONDS)                    : 0.419976 
RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.249146 
ADD_EQUALITY(MILLISECONDS)               : 0.027298 
DISJOIN_DISJUNCTIVE(MILLISECONDS)        : 0.000000 
ADD_DISEQUALITY(MILLISECONDS)            : 0.023552 
#CONJOIN_DISJUNCTIVE                     :    1555 
#RENAME_VARIABLES                        :    3064 
#UNFREEZE                                :       0 
#CONJOIN                                 :    1778 
#PROJECTAWAY                             :    1540 
#ADD_WEAK_EQUALITY                       :      48 
#DISJOIN                                 :     507 
#RENAME_VARIABLES_DISJUNCTIVE            :    3038 
#ADD_EQUALITY                            :     240 
#DISJOIN_DISJUNCTIVE                     :       0 
#ADD_DISEQUALITY                         :      69 

  - 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: 
[L985]  EXPR, FCALL  malloc(sizeof(SLL))
[L985]               SLL* head = malloc(sizeof(SLL));
[L986]  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: 
[L985]  EXPR, FCALL  malloc(sizeof(SLL))
[L985]               SLL* head = malloc(sizeof(SLL));
[L986]  FCALL        head->next = ((void*)0)
[L987]  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: 
[L985]  EXPR, FCALL  malloc(sizeof(SLL))
[L985]               SLL* head = malloc(sizeof(SLL));
[L986]  FCALL        head->next = ((void*)0)
[L987]  FCALL        head->data = 0
[L988]               SLL* item = head;
[L989]               int status = 0;
[L991]  COND TRUE    __VERIFIER_nondet_int()
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        item->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: 
[L985]  EXPR, FCALL  malloc(sizeof(SLL))
[L985]               SLL* head = malloc(sizeof(SLL));
[L986]  FCALL        head->next = ((void*)0)
[L987]  FCALL        head->data = 0
[L988]               SLL* item = head;
[L989]               int status = 0;
[L991]  COND TRUE    __VERIFIER_nondet_int()
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        item->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: 
[L985]  EXPR, FCALL  malloc(sizeof(SLL))
[L985]               SLL* head = malloc(sizeof(SLL));
[L986]  FCALL        head->next = ((void*)0)
[L987]  FCALL        head->data = 0
[L988]               SLL* item = head;
[L989]               int status = 0;
[L991]  COND TRUE    __VERIFIER_nondet_int()
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        item->next = malloc(sizeof(SLL))
[L994]  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: 
[L985]  EXPR, FCALL  malloc(sizeof(SLL))
[L985]               SLL* head = malloc(sizeof(SLL));
[L986]  FCALL        head->next = ((void*)0)
[L987]  FCALL        head->data = 0
[L988]               SLL* item = head;
[L989]               int status = 0;
[L991]  COND TRUE    __VERIFIER_nondet_int()
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        item->next = malloc(sizeof(SLL))
[L994]  EXPR, FCALL  item->next
[L994]               item = item->next
[L995]  FCALL        item->next = ((void*)0)

  - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: abstract domain could reach this error location. 
Possible FailurePath: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND FALSE   !(status == 1)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND FALSE   !(status == 3)
[L1038]  FCALL        head->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: 
[L985]  EXPR, FCALL  malloc(sizeof(SLL))
[L985]               SLL* head = malloc(sizeof(SLL));
[L986]  FCALL        head->next = ((void*)0)
[L987]  FCALL        head->data = 0
[L988]               SLL* item = head;
[L989]               int status = 0;
[L991]  COND TRUE    __VERIFIER_nondet_int()
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        item->next = malloc(sizeof(SLL))
[L994]  EXPR, FCALL  item->next
[L994]               item = item->next
[L995]  FCALL        item->next = ((void*)0)
[L997]  COND TRUE    !status
[L999]  FCALL        item->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND FALSE   !(status == 1)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND FALSE   !(status == 3)
[L1038]  EXPR, FCALL  head->next
[L1038]               item = head->next
[L1040]               item && __VERIFIER_nondet_int()
[L1040]               item && __VERIFIER_nondet_int()
[L1040]  COND FALSE   !(item && __VERIFIER_nondet_int())
[L1047]  COND TRUE    \read(*head)
[L1049]               item = head
[L1050]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND FALSE   !(status == 1)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND FALSE   !(status == 3)
[L1038]  EXPR, FCALL  head->next
[L1038]               item = head->next
[L1040]               item && __VERIFIER_nondet_int()
[L1040]               item && __VERIFIER_nondet_int()
[L1040]  COND TRUE    item && __VERIFIER_nondet_int()
[L1042]  EXPR         !status || item->data > 0
[L1042]  COND FALSE   !(!(!status || item->data > 0))
[L1042]  COND FALSE   !(0)
[L1043]  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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND FALSE   !(status == 1)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND FALSE   !(status == 3)
[L1038]  EXPR, FCALL  head->next
[L1038]               item = head->next
[L1040]               item && __VERIFIER_nondet_int()
[L1040]               item && __VERIFIER_nondet_int()
[L1040]  COND TRUE    item && __VERIFIER_nondet_int()
[L1042]  EXPR         !status || item->data > 0
[L1042]  COND FALSE   !(!(!status || item->data > 0))
[L1042]  COND FALSE   !(0)
[L1043]  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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND FALSE   !(status == 1)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND FALSE   !(status == 3)
[L1038]  EXPR, FCALL  head->next
[L1038]               item = head->next
[L1040]               item && __VERIFIER_nondet_int()
[L1040]               item && __VERIFIER_nondet_int()
[L1040]  COND FALSE   !(item && __VERIFIER_nondet_int())
[L1047]  COND TRUE    \read(*head)
[L1049]               item = head
[L1050]  EXPR, FCALL  head->next
[L1050]               head = head->next
[L1051]  FCALL        free(item)
[L1047]  COND TRUE    \read(*head)
[L1049]               item = head
[L1050]  FCALL        head->next

  - UnprovableResult [Line: 982]: 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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND FALSE   !(status == 1)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND FALSE   !(status == 3)
[L1038]  EXPR, FCALL  head->next
[L1038]               item = head->next
[L1040]               item && __VERIFIER_nondet_int()
[L1040]               item && __VERIFIER_nondet_int()
[L1040]  COND FALSE   !(item && __VERIFIER_nondet_int())
[L1047]  COND TRUE    \read(*head)
[L1049]               item = head
[L1050]  EXPR, FCALL  head->next
[L1050]               head = head->next
[L1051]  FCALL        free(item)
[L1047]  COND FALSE   !(\read(*head))
[L1054]               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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND FALSE   !(status == 1)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND FALSE   !(status == 3)
[L1038]  EXPR, FCALL  head->next
[L1038]               item = head->next
[L1040]               item && __VERIFIER_nondet_int()
[L1040]               item && __VERIFIER_nondet_int()
[L1040]  COND FALSE   !(item && __VERIFIER_nondet_int())
[L1047]  COND TRUE    \read(*head)
[L1049]               item = head
[L1050]  EXPR, FCALL  head->next
[L1050]               head = head->next
[L1051]  FCALL        free(item)
[L1047]  COND TRUE    \read(*head)
[L1049]               item = head
[L1050]  EXPR, FCALL  head->next
[L1050]               head = head->next
[L1051]  FCALL        free(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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND FALSE   !(!status)
[L1002]  COND TRUE    status == 1
[L1004]  FCALL        item->data = 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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND TRUE    status == 2
[L1025]  COND FALSE   !(!(head != ((void*)0)))
[L1025]  COND FALSE   !(0)
[L1026]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND TRUE    status == 2
[L1025]  COND FALSE   !(!(head != ((void*)0)))
[L1025]  COND FALSE   !(0)
[L1026]  EXPR, FCALL  head->next
[L1026]  COND FALSE   !(!(head->next != ((void*)0)))
[L1026]  COND FALSE   !(0)
[L1027]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND FALSE   !(status == 3)
[L1038]  EXPR, FCALL  head->next
[L1038]               item = head->next
[L1040]               item && __VERIFIER_nondet_int()
[L1040]               item && __VERIFIER_nondet_int()
[L1040]  COND TRUE    item && __VERIFIER_nondet_int()
[L1042]               !status || item->data > 0
[L1042]  FCALL        item->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND FALSE   !(status == 3)
[L1038]  EXPR, FCALL  head->next
[L1038]               item = head->next
[L1040]               item && __VERIFIER_nondet_int()
[L1040]               item && __VERIFIER_nondet_int()
[L1040]  COND TRUE    item && __VERIFIER_nondet_int()
[L1042]               !status || item->data > 0
[L1042]  FCALL        item->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND TRUE    status == 2
[L1025]  COND FALSE   !(!(head != ((void*)0)))
[L1025]  COND FALSE   !(0)
[L1026]  EXPR, FCALL  head->next
[L1026]  COND FALSE   !(!(head->next != ((void*)0)))
[L1026]  COND FALSE   !(0)
[L1027]  EXPR, FCALL  head->next
[L1027]  FCALL        head->next->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND TRUE    status == 2
[L1025]  COND FALSE   !(!(head != ((void*)0)))
[L1025]  COND FALSE   !(0)
[L1026]  EXPR, FCALL  head->next
[L1026]  COND FALSE   !(!(head->next != ((void*)0)))
[L1026]  COND FALSE   !(0)
[L1027]  EXPR, FCALL  head->next
[L1027]  FCALL        head->next->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  head->next
[L1033]  FCALL        head->next->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  head->next
[L1033]  FCALL        head->next->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND FALSE   !(!status)
[L1002]  COND TRUE    status == 1
[L1004]  FCALL        item->data = 2
[L1005]               status = 2
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND FALSE   !(status == 1)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND FALSE   !(status == 3)
[L1038]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  head->next
[L1033]  EXPR, FCALL  head->next->next
[L1033]  COND FALSE   !(!(head->next->next != ((void*)0)))
[L1033]  COND FALSE   !(0)
[L1034]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND FALSE   !(!status)
[L1002]  COND TRUE    status == 1
[L1004]  FCALL        item->data = 2
[L1005]               status = 2
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND FALSE   !(!status)
[L1002]  COND TRUE    status == 1
[L1004]  FCALL        item->data = 2
[L1005]               status = 2
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND FALSE   !(!status)
[L1002]  COND FALSE   !(status == 1)
[L1007]  COND TRUE    status >= 2
[L1009]  FCALL        item->data = 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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  head->next
[L1033]  EXPR, FCALL  head->next->next
[L1033]  COND FALSE   !(!(head->next->next != ((void*)0)))
[L1033]  COND FALSE   !(0)
[L1034]  EXPR, FCALL  head->next
[L1034]  FCALL        head->next->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND FALSE   !(!status)
[L1002]  COND TRUE    status == 1
[L1004]  FCALL        item->data = 2
[L1005]               status = 2
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND FALSE   !(status == 1)
[L1023]  COND TRUE    status == 2
[L1025]  COND FALSE   !(!(head != ((void*)0)))
[L1025]  COND FALSE   !(0)
[L1026]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  head->next
[L1033]  EXPR, FCALL  head->next->next
[L1033]  COND FALSE   !(!(head->next->next != ((void*)0)))
[L1033]  COND FALSE   !(0)
[L1034]  EXPR, FCALL  head->next
[L1034]  EXPR, FCALL  head->next->next
[L1034]  FCALL        head->next->next->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  head->next
[L1033]  EXPR, FCALL  head->next->next
[L1033]  COND FALSE   !(!(head->next->next != ((void*)0)))
[L1033]  COND FALSE   !(0)
[L1034]  EXPR, FCALL  head->next
[L1034]  EXPR, FCALL  head->next->next
[L1034]  FCALL        head->next->next->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND FALSE   !(!status)
[L1002]  COND TRUE    status == 1
[L1004]  FCALL        item->data = 2
[L1005]               status = 2
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND FALSE   !(status == 1)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  head->next
[L1033]  EXPR, FCALL  head->next->next
[L1033]  COND FALSE   !(!(head->next->next != ((void*)0)))
[L1033]  COND FALSE   !(0)
[L1034]  EXPR, FCALL  head->next
[L1034]  EXPR, FCALL  head->next->next
[L1034]  EXPR, FCALL  head->next->next->next
[L1034]  COND FALSE   !(!(head->next->next->next != ((void*)0)))
[L1034]  COND FALSE   !(0)
[L1035]  FCALL        head->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  head->next
[L1033]  EXPR, FCALL  head->next->next
[L1033]  COND FALSE   !(!(head->next->next != ((void*)0)))
[L1033]  COND FALSE   !(0)
[L1034]  EXPR, FCALL  head->next
[L1034]  EXPR, FCALL  head->next->next
[L1034]  EXPR, FCALL  head->next->next->next
[L1034]  COND FALSE   !(!(head->next->next->next != ((void*)0)))
[L1034]  COND FALSE   !(0)
[L1035]  EXPR, FCALL  head->next
[L1035]  FCALL        head->next->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  head->next
[L1033]  EXPR, FCALL  head->next->next
[L1033]  COND FALSE   !(!(head->next->next != ((void*)0)))
[L1033]  COND FALSE   !(0)
[L1034]  EXPR, FCALL  head->next
[L1034]  EXPR, FCALL  head->next->next
[L1034]  EXPR, FCALL  head->next->next->next
[L1034]  COND FALSE   !(!(head->next->next->next != ((void*)0)))
[L1034]  COND FALSE   !(0)
[L1035]  EXPR, FCALL  head->next
[L1035]  EXPR, FCALL  head->next->next
[L1035]  FCALL        head->next->next->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  head->next
[L1033]  EXPR, FCALL  head->next->next
[L1033]  COND FALSE   !(!(head->next->next != ((void*)0)))
[L1033]  COND FALSE   !(0)
[L1034]  EXPR, FCALL  head->next
[L1034]  EXPR, FCALL  head->next->next
[L1034]  EXPR, FCALL  head->next->next->next
[L1034]  COND FALSE   !(!(head->next->next->next != ((void*)0)))
[L1034]  COND FALSE   !(0)
[L1035]  EXPR, FCALL  head->next
[L1035]  EXPR, FCALL  head->next->next
[L1035]  EXPR, FCALL  head->next->next->next
[L1035]  FCALL        head->next->next->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: 
[L985]   EXPR, FCALL  malloc(sizeof(SLL))
[L985]                SLL* head = malloc(sizeof(SLL));
[L986]   FCALL        head->next = ((void*)0)
[L987]   FCALL        head->data = 0
[L988]                SLL* item = head;
[L989]                int status = 0;
[L991]   COND TRUE    __VERIFIER_nondet_int()
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        item->next = malloc(sizeof(SLL))
[L994]   EXPR, FCALL  item->next
[L994]                item = item->next
[L995]   FCALL        item->next = ((void*)0)
[L997]   COND TRUE    !status
[L999]   FCALL        item->data = 1
[L1000]               status = 1
[L1013]  COND FALSE   !(!(head != ((void*)0)))
[L1013]  COND FALSE   !(0)
[L1014]  COND FALSE   !(!(item != ((void*)0)))
[L1014]  COND FALSE   !(0)
[L991]   COND FALSE   !(__VERIFIER_nondet_int())
[L1017]  COND FALSE   !(!(head != ((void*)0)))
[L1017]  COND FALSE   !(0)
[L1018]  COND TRUE    status == 1
[L1020]  COND FALSE   !(!(head != ((void*)0)))
[L1020]  COND FALSE   !(0)
[L1021]  EXPR, FCALL  head->next
[L1021]  COND FALSE   !(!(head->next != ((void*)0)))
[L1021]  COND FALSE   !(0)
[L1023]  COND FALSE   !(status == 2)
[L1029]  COND TRUE    status == 3
[L1031]  COND FALSE   !(!(head != ((void*)0)))
[L1031]  COND FALSE   !(0)
[L1032]  EXPR, FCALL  head->next
[L1032]  COND FALSE   !(!(head->next != ((void*)0)))
[L1032]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  head->next
[L1033]  EXPR, FCALL  head->next->next
[L1033]  COND FALSE   !(!(head->next->next != ((void*)0)))
[L1033]  COND FALSE   !(0)
[L1034]  EXPR, FCALL  head->next
[L1034]  EXPR, FCALL  head->next->next
[L1034]  EXPR, FCALL  head->next->next->next
[L1034]  COND FALSE   !(!(head->next->next->next != ((void*)0)))
[L1034]  COND FALSE   !(0)
[L1035]  EXPR, FCALL  head->next
[L1035]  EXPR, FCALL  head->next->next
[L1035]  EXPR, FCALL  head->next->next->next
[L1035]  FCALL        head->next->next->next->data

  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: free always succeeds
    For all program executions holds that free always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
 * 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/sll-queue_true-unreach-call_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-34-38-558.csv
Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-queue_true-unreach-call_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-34-38-558.csv
Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-queue_true-unreach-call_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-34-38-558.csv
Received shutdown request...