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-01_false-unreach-call_false-valid-deref.i


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


This is Ultimate 0.1.23-6b94a2f
[2018-01-24 16:34:53,157 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-01-24 16:34:53,160 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-01-24 16:34:53,173 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-01-24 16:34:53,173 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-01-24 16:34:53,174 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-01-24 16:34:53,176 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-01-24 16:34:53,177 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-01-24 16:34:53,179 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-01-24 16:34:53,180 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-01-24 16:34:53,180 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-01-24 16:34:53,180 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-01-24 16:34:53,181 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-01-24 16:34:53,182 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-01-24 16:34:53,183 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-01-24 16:34:53,185 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-01-24 16:34:53,188 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-01-24 16:34:53,190 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-01-24 16:34:53,191 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-01-24 16:34:53,192 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-01-24 16:34:53,195 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-01-24 16:34:53,195 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-01-24 16:34:53,195 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-01-24 16:34:53,196 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-01-24 16:34:53,197 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-01-24 16:34:53,199 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-01-24 16:34:53,199 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-01-24 16:34:53,200 INFO  L177        SettingsManager]: PEA to Boogie provides no preferences, ignoring...
[2018-01-24 16:34:53,200 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-01-24 16:34:53,200 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-01-24 16:34:53,201 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-01-24 16:34:53,201 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 16:34:53,211 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-01-24 16:34:53,212 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-01-24 16:34:53,213 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-01-24 16:34:53,213 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-01-24 16:34:53,213 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-01-24 16:34:53,213 INFO  L133        SettingsManager]:  * Deactivate Weak Equivalences=true
[2018-01-24 16:34:53,214 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=VPDomain
[2018-01-24 16:34:53,214 INFO  L133        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2018-01-24 16:34:53,214 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-01-24 16:34:53,215 INFO  L133        SettingsManager]:  * sizeof long=4
[2018-01-24 16:34:53,215 INFO  L133        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2018-01-24 16:34:53,215 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-01-24 16:34:53,215 INFO  L133        SettingsManager]:  * sizeof POINTER=4
[2018-01-24 16:34:53,216 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-01-24 16:34:53,216 INFO  L133        SettingsManager]:  * Check for the main procedure if all allocated memory was freed=true
[2018-01-24 16:34:53,216 INFO  L133        SettingsManager]:  * Bitprecise bitfields=true
[2018-01-24 16:34:53,216 INFO  L133        SettingsManager]:  * SV-COMP memtrack compatibility mode=true
[2018-01-24 16:34:53,216 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-01-24 16:34:53,216 INFO  L133        SettingsManager]:  * sizeof long double=12
[2018-01-24 16:34:53,217 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-01-24 16:34:53,217 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-01-24 16:34:53,217 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-01-24 16:34:53,217 INFO  L133        SettingsManager]:  * Add additional assume for each assert=false
[2018-01-24 16:34:53,217 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-01-24 16:34:53,218 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-01-24 16:34:53,218 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-01-24 16:34:53,218 INFO  L133        SettingsManager]:  * Interpolant automaton=TWOTRACK
[2018-01-24 16:34:53,218 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-01-24 16:34:53,219 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-01-24 16:34:53,219 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-01-24 16:34:53,219 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-01-24 16:34:53,219 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-01-24 16:34:53,219 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-01-24 16:34:53,220 INFO  L131        SettingsManager]: Preferences of IcfgTransformer differ from their defaults:
[2018-01-24 16:34:53,220 INFO  L133        SettingsManager]:  * TransformationType=HEAP_SEPARATOR
[2018-01-24 16:34:53,256 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-01-24 16:34:53,270 INFO  L266   ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized
[2018-01-24 16:34:53,274 INFO  L222   ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected.
[2018-01-24 16:34:53,276 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-01-24 16:34:53,276 INFO  L276        PluginConnector]: CDTParser initialized
[2018-01-24 16:34:53,277 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01_false-unreach-call_false-valid-deref.i
[2018-01-24 16:34:53,471 INFO  L304   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-01-24 16:34:53,478 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2018-01-24 16:34:53,479 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-01-24 16:34:53,479 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-01-24 16:34:53,486 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-01-24 16:34:53,487 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:34:53" (1/1) ...
[2018-01-24 16:34:53,490 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321f72c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:53, skipping insertion in model container
[2018-01-24 16:34:53,490 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:34:53" (1/1) ...
[2018-01-24 16:34:53,508 INFO  L153             Dispatcher]: Using SV-COMP mode
[2018-01-24 16:34:53,552 INFO  L153             Dispatcher]: Using SV-COMP mode
[2018-01-24 16:34:53,681 INFO  L450          PostProcessor]: Settings: Checked method=main
[2018-01-24 16:34:53,702 INFO  L450          PostProcessor]: Settings: Checked method=main
[2018-01-24 16:34:53,709 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:53 WrapperNode
[2018-01-24 16:34:53,709 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-01-24 16:34:53,710 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-01-24 16:34:53,710 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-01-24 16:34:53,710 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-01-24 16:34:53,721 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:53" (1/1) ...
[2018-01-24 16:34:53,721 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:53" (1/1) ...
[2018-01-24 16:34:53,732 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:53" (1/1) ...
[2018-01-24 16:34:53,732 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:53" (1/1) ...
[2018-01-24 16:34:53,740 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:53" (1/1) ...
[2018-01-24 16:34:53,746 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:53" (1/1) ...
[2018-01-24 16:34:53,748 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:53" (1/1) ...
[2018-01-24 16:34:53,750 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-01-24 16:34:53,751 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-01-24 16:34:53,751 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-01-24 16:34:53,751 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-01-24 16:34:53,752 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:34:53" (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 16:34:53,799 INFO  L136     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-01-24 16:34:53,799 INFO  L136     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-01-24 16:34:53,799 INFO  L136     BoogieDeclarations]: Found implementation of procedure main
[2018-01-24 16:34:53,799 INFO  L128     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2018-01-24 16:34:53,799 INFO  L128     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2018-01-24 16:34:53,800 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.free
[2018-01-24 16:34:53,800 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2018-01-24 16:34:53,800 INFO  L128     BoogieDeclarations]: Found specification of procedure #Ultimate.alloc
[2018-01-24 16:34:53,800 INFO  L128     BoogieDeclarations]: Found specification of procedure malloc
[2018-01-24 16:34:53,800 INFO  L128     BoogieDeclarations]: Found specification of procedure free
[2018-01-24 16:34:53,800 INFO  L128     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2018-01-24 16:34:53,801 INFO  L128     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2018-01-24 16:34:53,801 INFO  L128     BoogieDeclarations]: Found specification of procedure main
[2018-01-24 16:34:53,801 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-01-24 16:34:53,801 INFO  L128     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-01-24 16:34:54,463 INFO  L257             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-01-24 16:34:54,463 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:34:54 BoogieIcfgContainer
[2018-01-24 16:34:54,464 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-01-24 16:34:54,464 INFO  L113        PluginConnector]: ------------------------Abstract Interpretation----------------------------
[2018-01-24 16:34:54,465 INFO  L271        PluginConnector]: Initializing Abstract Interpretation...
[2018-01-24 16:34:54,465 INFO  L276        PluginConnector]: Abstract Interpretation initialized
[2018-01-24 16:34:54,466 INFO  L185        PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:34:54" (1/1) ...
[2018-01-24 16:34:54,514 INFO  L101         FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2)
[2018-01-24 16:34:58,661 INFO  L259    AbstractInterpreter]: Some error location(s) were reachable
[2018-01-24 16:34:58,708 WARN  L343   cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true)
[2018-01-24 16:34:58,721 INFO  L268    AbstractInterpreter]: Visited 241 different actions 1019 times. Merged at 145 different actions 493 times. Widened at 12 different actions 18 times. Found 42 fixpoints after 27 different actions. Largest state had 71 variables.
[2018-01-24 16:34:58,724 INFO  L132        PluginConnector]: ------------------------ END Abstract Interpretation----------------------------
[2018-01-24 16:34:58,725 INFO  L168              Benchmark]: Toolchain (without parser) took 5253.24 ms. Allocated memory was 305.1 MB in the beginning and 756.0 MB in the end (delta: 450.9 MB). Free memory was 265.2 MB in the beginning and 704.8 MB in the end (delta: -439.6 MB). Peak memory consumption was 11.3 MB. Max. memory is 5.3 GB.
[2018-01-24 16:34:58,726 INFO  L168              Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 305.1 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB.
[2018-01-24 16:34:58,726 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 230.80 ms. Allocated memory is still 305.1 MB. Free memory was 264.2 MB in the beginning and 252.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 5.3 GB.
[2018-01-24 16:34:58,727 INFO  L168              Benchmark]: Boogie Preprocessor took 40.89 ms. Allocated memory is still 305.1 MB. Free memory was 252.0 MB in the beginning and 250.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB.
[2018-01-24 16:34:58,727 INFO  L168              Benchmark]: RCFGBuilder took 712.85 ms. Allocated memory is still 305.1 MB. Free memory was 249.0 MB in the beginning and 205.9 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 5.3 GB.
[2018-01-24 16:34:58,728 INFO  L168              Benchmark]: Abstract Interpretation took 4259.92 ms. Allocated memory was 305.1 MB in the beginning and 756.0 MB in the end (delta: 450.9 MB). Free memory was 205.9 MB in the beginning and 704.8 MB in the end (delta: -498.9 MB). There was no memory consumed. Max. memory is 5.3 GB.
[2018-01-24 16:34:58,729 INFO  L344   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.19 ms. Allocated memory is still 305.1 MB. Free memory is still 271.1 MB. There was no memory consumed. Max. memory is 5.3 GB.
 * CACSL2BoogieTranslator took 230.80 ms. Allocated memory is still 305.1 MB. Free memory was 264.2 MB in the beginning and 252.0 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 5.3 GB.
 * Boogie Preprocessor took 40.89 ms. Allocated memory is still 305.1 MB. Free memory was 252.0 MB in the beginning and 250.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB.
 * RCFGBuilder took 712.85 ms. Allocated memory is still 305.1 MB. Free memory was 249.0 MB in the beginning and 205.9 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 5.3 GB.
 * Abstract Interpretation took 4259.92 ms. Allocated memory was 305.1 MB in the beginning and 756.0 MB in the end (delta: 450.9 MB). Free memory was 205.9 MB in the beginning and 704.8 MB in the end (delta: -498.9 MB). There was no memory consumed. Max. memory is 5.3 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2:
  - StatisticsResult: ArrayEqualityDomainStatistics
    
#Locations                               :     166 
LocStat_MAX_WEQGRAPH_SIZE                :       0 
LocStat_MAX_SIZEOF_WEQEDGELABEL          :       0 
LocStat_NO_SUPPORTING_EQUALITIES         :    1918 
LocStat_NO_SUPPORTING_DISEQUALITIES      :     541 
LocStat_NO_DISJUNCTIONS                  :    -332 
LocStat_MAX_NO_DISJUNCTIONS              :      -1 
#Transitions                             :     245 
TransStat_MAX_WEQGRAPH_SIZE              :       0 
TransStat_MAX_SIZEOF_WEQEDGELABEL        :       0 
TransStat_NO_SUPPORTING_EQUALITIES       :     289 
TransStat_NO_SUPPORTING_DISEQUALITIES    :      90 
TransStat_NO_DISJUNCTIONS                :     256 
TransStat_MAX_NO_DISJUNCTIONS            :       4 

  - StatisticsResult: EqConstraintFactoryStatistics
    
CONJOIN_DISJUNCTIVE(MILLISECONDS)        : 0.003157 
RENAME_VARIABLES(MILLISECONDS)           : 0.286067 
UNFREEZE(MILLISECONDS)                   : 0.000000 
CONJOIN(MILLISECONDS)                    : 0.000701 
PROJECTAWAY(MILLISECONDS)                : 0.031657 
ADD_WEAK_EQUALITY(MILLISECONDS)          : 0.002788 
DISJOIN(MILLISECONDS)                    : 0.694481 
RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.314320 
ADD_EQUALITY(MILLISECONDS)               : 0.011441 
DISJOIN_DISJUNCTIVE(MILLISECONDS)        : 0.000000 
ADD_DISEQUALITY(MILLISECONDS)            : 0.014525 
#CONJOIN_DISJUNCTIVE                     :    1624 
#RENAME_VARIABLES                        :    3070 
#UNFREEZE                                :       0 
#CONJOIN                                 :    1790 
#PROJECTAWAY                             :    1543 
#ADD_WEAK_EQUALITY                       :      55 
#DISJOIN                                 :     298 
#RENAME_VARIABLES_DISJUNCTIVE            :    3110 
#ADD_EQUALITY                            :     290 
#DISJOIN_DISJUNCTIVE                     :       0 
#ADD_DISEQUALITY                         :      76 

  - 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: 
[L991]  EXPR, FCALL  malloc(sizeof(SLL))
[L991]               SLL* list = malloc(sizeof(SLL));
[L992]  FCALL        list->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: 
[L991]  EXPR, FCALL  malloc(sizeof(SLL))
[L991]               SLL* list = malloc(sizeof(SLL));
[L992]  FCALL        list->next = ((void*)0)
[L993]  COND FALSE   !(!(list != ((void*)0)))
[L993]  COND FALSE   !(0)
[L993]  COND TRUE    __VERIFIER_nondet_int()
[L993]  FCALL        list->inner = ((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: 
[L991]  EXPR, FCALL  malloc(sizeof(SLL))
[L991]               SLL* list = malloc(sizeof(SLL));
[L992]  FCALL        list->next = ((void*)0)
[L993]  COND FALSE   !(!(list != ((void*)0)))
[L993]  COND FALSE   !(0)
[L993]  COND FALSE   !(__VERIFIER_nondet_int())
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        list->inner = 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: 
[L991]  EXPR, FCALL  malloc(sizeof(SLL))
[L991]               SLL* list = malloc(sizeof(SLL));
[L992]  FCALL        list->next = ((void*)0)
[L993]  COND FALSE   !(!(list != ((void*)0)))
[L993]  COND FALSE   !(0)
[L993]  COND FALSE   !(__VERIFIER_nondet_int())
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        list->inner = 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: 
[L991]  EXPR, FCALL  malloc(sizeof(SLL))
[L991]               SLL* list = malloc(sizeof(SLL));
[L992]  FCALL        list->next = ((void*)0)
[L993]  COND FALSE   !(!(list != ((void*)0)))
[L993]  COND FALSE   !(0)
[L993]  COND FALSE   !(__VERIFIER_nondet_int())
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        list->inner = malloc(sizeof(SLL))
[L993]  FCALL        list->inner

  - 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: 
[L991]  EXPR, FCALL  malloc(sizeof(SLL))
[L991]               SLL* list = malloc(sizeof(SLL));
[L992]  FCALL        list->next = ((void*)0)
[L993]  COND FALSE   !(!(list != ((void*)0)))
[L993]  COND FALSE   !(0)
[L993]  COND TRUE    __VERIFIER_nondet_int()
[L993]  FCALL        list->inner = ((void*)0)
[L993]  FCALL        list->inner

  - 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: 
[L991]  EXPR, FCALL  malloc(sizeof(SLL))
[L991]               SLL* list = malloc(sizeof(SLL));
[L992]  FCALL        list->next = ((void*)0)
[L993]  COND FALSE   !(!(list != ((void*)0)))
[L993]  COND FALSE   !(0)
[L993]  COND FALSE   !(__VERIFIER_nondet_int())
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        list->inner = malloc(sizeof(SLL))
[L993]  EXPR, FCALL  list->inner
[L993]  FCALL        list->inner->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: 
[L991]  EXPR, FCALL  malloc(sizeof(SLL))
[L991]               SLL* list = malloc(sizeof(SLL));
[L992]  FCALL        list->next = ((void*)0)
[L993]  COND FALSE   !(!(list != ((void*)0)))
[L993]  COND FALSE   !(0)
[L993]  COND FALSE   !(__VERIFIER_nondet_int())
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        list->inner = malloc(sizeof(SLL))
[L993]  EXPR, FCALL  list->inner
[L993]  FCALL        list->inner->next = ((void*)0)
[L993]  FCALL        list->inner

  - 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: 
[L991]  EXPR, FCALL  malloc(sizeof(SLL))
[L991]               SLL* list = malloc(sizeof(SLL));
[L992]  FCALL        list->next = ((void*)0)
[L993]  COND FALSE   !(!(list != ((void*)0)))
[L993]  COND FALSE   !(0)
[L993]  COND TRUE    __VERIFIER_nondet_int()
[L993]  FCALL        list->inner = ((void*)0)
[L993]  EXPR, FCALL  list->inner
[L993]               list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]  FCALL        list->inner

  - 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: 
[L991]  EXPR, FCALL  malloc(sizeof(SLL))
[L991]               SLL* list = malloc(sizeof(SLL));
[L992]  FCALL        list->next = ((void*)0)
[L993]  COND FALSE   !(!(list != ((void*)0)))
[L993]  COND FALSE   !(0)
[L993]  COND FALSE   !(__VERIFIER_nondet_int())
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        list->inner = malloc(sizeof(SLL))
[L993]  EXPR, FCALL  list->inner
[L993]  FCALL        list->inner->next = ((void*)0)
[L993]  EXPR, FCALL  list->inner
[L993]  FCALL        list->inner->inner = ((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: 
[L991]  EXPR, FCALL  malloc(sizeof(SLL))
[L991]               SLL* list = malloc(sizeof(SLL));
[L992]  FCALL        list->next = ((void*)0)
[L993]  COND FALSE   !(!(list != ((void*)0)))
[L993]  COND FALSE   !(0)
[L993]  COND FALSE   !(__VERIFIER_nondet_int())
[L993]  EXPR, FCALL  malloc(sizeof(SLL))
[L993]  FCALL        list->inner = malloc(sizeof(SLL))
[L993]  EXPR, FCALL  list->inner
[L993]  FCALL        list->inner->next = ((void*)0)
[L993]  EXPR, FCALL  list->inner
[L993]  FCALL        list->inner->inner = ((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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  FCALL        end->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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  EXPR, FCALL  end->next
[L1002]               end = end->next
[L1003]  FCALL        end->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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  FCALL        end->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  FCALL        end->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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  EXPR, FCALL  end->next
[L1002]               end = end->next
[L1003]  FCALL        end->next = ((void*)0)
[L1004]  COND FALSE   !(!(((void*)0) != end))
[L1004]  COND FALSE   !(0)
[L1005]  COND FALSE   !(!(end != ((void*)0)))
[L1005]  COND FALSE   !(0)
[L1005]  COND TRUE    __VERIFIER_nondet_int()
[L1005]  FCALL        end->inner = ((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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  EXPR, FCALL  end->next
[L1002]               end = end->next
[L1003]  FCALL        end->next = ((void*)0)
[L1004]  COND FALSE   !(!(((void*)0) != end))
[L1004]  COND FALSE   !(0)
[L1005]  COND FALSE   !(!(end != ((void*)0)))
[L1005]  COND FALSE   !(0)
[L1005]  COND FALSE   !(__VERIFIER_nondet_int())
[L1005]  EXPR, FCALL  malloc(sizeof(SLL))
[L1005]  FCALL        end->inner = 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  EXPR, FCALL  end->next
[L1002]               end = end->next
[L1003]  FCALL        end->next = ((void*)0)
[L1004]  COND FALSE   !(!(((void*)0) != end))
[L1004]  COND FALSE   !(0)
[L1005]  COND FALSE   !(!(end != ((void*)0)))
[L1005]  COND FALSE   !(0)
[L1005]  COND FALSE   !(__VERIFIER_nondet_int())
[L1005]  EXPR, FCALL  malloc(sizeof(SLL))
[L1005]  FCALL        end->inner = 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND TRUE    ((void*)0) != inner
[L1020]  COND TRUE    len == 0
[L1021]               len = 1
[L1024]  COND FALSE   !(!(((void*)0) != inner))
[L1024]  COND FALSE   !(0)
[L1025]  FCALL        inner->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND TRUE    ((void*)0) != inner
[L1020]  COND TRUE    len == 0
[L1021]               len = 1
[L1024]  COND FALSE   !(!(((void*)0) != inner))
[L1024]  COND FALSE   !(0)
[L1025]  FCALL        inner->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  EXPR, FCALL  end->next
[L1002]               end = end->next
[L1003]  FCALL        end->next = ((void*)0)
[L1004]  COND FALSE   !(!(((void*)0) != end))
[L1004]  COND FALSE   !(0)
[L1005]  COND FALSE   !(!(end != ((void*)0)))
[L1005]  COND FALSE   !(0)
[L1005]  COND TRUE    __VERIFIER_nondet_int()
[L1005]  FCALL        end->inner = ((void*)0)
[L1005]  FCALL        end->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  EXPR, FCALL  end->next
[L1002]               end = end->next
[L1003]  FCALL        end->next = ((void*)0)
[L1004]  COND FALSE   !(!(((void*)0) != end))
[L1004]  COND FALSE   !(0)
[L1005]  COND FALSE   !(!(end != ((void*)0)))
[L1005]  COND FALSE   !(0)
[L1005]  COND FALSE   !(__VERIFIER_nondet_int())
[L1005]  EXPR, FCALL  malloc(sizeof(SLL))
[L1005]  FCALL        end->inner = malloc(sizeof(SLL))
[L1005]  FCALL        end->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  EXPR, FCALL  end->next
[L1002]               end = end->next
[L1003]  FCALL        end->next = ((void*)0)
[L1004]  COND FALSE   !(!(((void*)0) != end))
[L1004]  COND FALSE   !(0)
[L1005]  COND FALSE   !(!(end != ((void*)0)))
[L1005]  COND FALSE   !(0)
[L1005]  COND FALSE   !(__VERIFIER_nondet_int())
[L1005]  EXPR, FCALL  malloc(sizeof(SLL))
[L1005]  FCALL        end->inner = malloc(sizeof(SLL))
[L1005]  EXPR, FCALL  end->inner
[L1005]  FCALL        end->inner->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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  end->next
[L1033]               end = end->next
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  FCALL        end->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  EXPR, FCALL  end->next
[L1002]               end = end->next
[L1003]  FCALL        end->next = ((void*)0)
[L1004]  COND FALSE   !(!(((void*)0) != end))
[L1004]  COND FALSE   !(0)
[L1005]  COND FALSE   !(!(end != ((void*)0)))
[L1005]  COND FALSE   !(0)
[L1005]  COND TRUE    __VERIFIER_nondet_int()
[L1005]  FCALL        end->inner = ((void*)0)
[L1005]  EXPR, FCALL  end->inner
[L1005]               end->inner != ((void*)0) || end->inner == ((void*)0)
[L1005]  FCALL        end->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  EXPR, FCALL  end->next
[L1002]               end = end->next
[L1003]  FCALL        end->next = ((void*)0)
[L1004]  COND FALSE   !(!(((void*)0) != end))
[L1004]  COND FALSE   !(0)
[L1005]  COND FALSE   !(!(end != ((void*)0)))
[L1005]  COND FALSE   !(0)
[L1005]  COND FALSE   !(__VERIFIER_nondet_int())
[L1005]  EXPR, FCALL  malloc(sizeof(SLL))
[L1005]  FCALL        end->inner = malloc(sizeof(SLL))
[L1005]  EXPR, FCALL  end->inner
[L1005]  FCALL        end->inner->next = ((void*)0)
[L1005]  FCALL        end->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  end->next
[L1033]               end = end->next
[L1014]  COND FALSE   !(((void*)0) != end)
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  FCALL        list->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND TRUE    ((void*)0) != inner
[L1020]  COND TRUE    len == 0
[L1021]               len = 1
[L1024]  COND FALSE   !(!(((void*)0) != inner))
[L1024]  COND FALSE   !(0)
[L1025]  EXPR, FCALL  inner->inner
[L1025]  COND FALSE   !(!(((void*)0) == inner->inner))
[L1025]  COND FALSE   !(0)
[L1026]  FCALL        inner->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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  EXPR, FCALL  end->next
[L1002]               end = end->next
[L1003]  FCALL        end->next = ((void*)0)
[L1004]  COND FALSE   !(!(((void*)0) != end))
[L1004]  COND FALSE   !(0)
[L1005]  COND FALSE   !(!(end != ((void*)0)))
[L1005]  COND FALSE   !(0)
[L1005]  COND FALSE   !(__VERIFIER_nondet_int())
[L1005]  EXPR, FCALL  malloc(sizeof(SLL))
[L1005]  FCALL        end->inner = malloc(sizeof(SLL))
[L1005]  EXPR, FCALL  end->inner
[L1005]  FCALL        end->inner->next = ((void*)0)
[L1005]  EXPR, FCALL  end->inner
[L1005]  FCALL        end->inner->inner = ((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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND TRUE    __VERIFIER_nondet_int()
[L1001]  EXPR, FCALL  malloc(sizeof(SLL))
[L1001]  FCALL        end->next = malloc(sizeof(SLL))
[L1002]  EXPR, FCALL  end->next
[L1002]               end = end->next
[L1003]  FCALL        end->next = ((void*)0)
[L1004]  COND FALSE   !(!(((void*)0) != end))
[L1004]  COND FALSE   !(0)
[L1005]  COND FALSE   !(!(end != ((void*)0)))
[L1005]  COND FALSE   !(0)
[L1005]  COND FALSE   !(__VERIFIER_nondet_int())
[L1005]  EXPR, FCALL  malloc(sizeof(SLL))
[L1005]  FCALL        end->inner = malloc(sizeof(SLL))
[L1005]  EXPR, FCALL  end->inner
[L1005]  FCALL        end->inner->next = ((void*)0)
[L1005]  EXPR, FCALL  end->inner
[L1005]  FCALL        end->inner->inner = ((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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  end->next
[L1033]               end = end->next
[L1014]  COND FALSE   !(((void*)0) != end)
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  EXPR, FCALL  list->inner
[L1039]               end = list->inner
[L1041]  COND FALSE   !(((void*)0) != end)
[L1049]  FCALL        list->next

  - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: abstract domain could reach this error location. 
Possible FailurePath: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND TRUE    ((void*)0) != inner
[L1020]  COND TRUE    len == 0
[L1021]               len = 1
[L1024]  COND FALSE   !(!(((void*)0) != inner))
[L1024]  COND FALSE   !(0)
[L1025]  EXPR, FCALL  inner->inner
[L1025]  COND FALSE   !(!(((void*)0) == inner->inner))
[L1025]  COND FALSE   !(0)
[L1026]  EXPR, FCALL  inner->next
[L1026]  COND FALSE   !(!(((void*)0) == inner->next))
[L1026]  COND FALSE   !(0)
[L1027]  FCALL        inner->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND TRUE    ((void*)0) != inner
[L1020]  COND TRUE    len == 0
[L1021]               len = 1
[L1024]  COND FALSE   !(!(((void*)0) != inner))
[L1024]  COND FALSE   !(0)
[L1025]  EXPR, FCALL  inner->inner
[L1025]  COND FALSE   !(!(((void*)0) == inner->inner))
[L1025]  COND FALSE   !(0)
[L1026]  EXPR, FCALL  inner->next
[L1026]  COND FALSE   !(!(((void*)0) == inner->next))
[L1026]  COND FALSE   !(0)
[L1027]  EXPR, FCALL  inner->inner
[L1027]               inner = inner->inner
[L1028]  COND TRUE    len == 1
[L1029]  FCALL        inner->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND TRUE    ((void*)0) != inner
[L1020]  COND TRUE    len == 0
[L1021]               len = 1
[L1024]  COND FALSE   !(!(((void*)0) != inner))
[L1024]  COND FALSE   !(0)
[L1025]  EXPR, FCALL  inner->inner
[L1025]  COND FALSE   !(!(((void*)0) == inner->inner))
[L1025]  COND FALSE   !(0)
[L1026]  EXPR, FCALL  inner->next
[L1026]  COND FALSE   !(!(((void*)0) == inner->next))
[L1026]  COND FALSE   !(0)
[L1027]  EXPR, FCALL  inner->inner
[L1027]               inner = inner->inner
[L1028]  COND TRUE    len == 1
[L1029]  FCALL        inner->inner

  - UnprovableResult [Line: 988]: 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND TRUE    __VERIFIER_nondet_int()
[L993]   FCALL        list->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  end->next
[L1033]               end = end->next
[L1014]  COND FALSE   !(((void*)0) != end)
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  EXPR, FCALL  list->inner
[L1039]               end = list->inner
[L1041]  COND FALSE   !(((void*)0) != end)
[L1049]  EXPR, FCALL  list->next
[L1049]               end = list->next
[L1050]  FCALL        free(list)
[L1051]               list = end
[L1037]  COND FALSE   !(((void*)0) != list)
[L1054]               return 0;

  - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: abstract domain could reach this error location. 
Possible FailurePath: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND FALSE   !(__VERIFIER_nondet_int())
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        list->inner = malloc(sizeof(SLL))
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->next = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  end->next
[L1033]               end = end->next
[L1014]  COND FALSE   !(((void*)0) != end)
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  EXPR, FCALL  list->inner
[L1039]               end = list->inner
[L1041]  COND TRUE    ((void*)0) != end
[L1043]  COND FALSE   !(!(((void*)0) != end))
[L1043]  COND FALSE   !(0)
[L1044]  FCALL        end->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND FALSE   !(__VERIFIER_nondet_int())
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        list->inner = malloc(sizeof(SLL))
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->next = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  end->next
[L1033]               end = end->next
[L1014]  COND FALSE   !(((void*)0) != end)
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  EXPR, FCALL  list->inner
[L1039]               end = list->inner
[L1041]  COND TRUE    ((void*)0) != end
[L1043]  COND FALSE   !(!(((void*)0) != end))
[L1043]  COND FALSE   !(0)
[L1044]  FCALL        end->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND FALSE   !(__VERIFIER_nondet_int())
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        list->inner = malloc(sizeof(SLL))
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->next = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  end->next
[L1033]               end = end->next
[L1014]  COND FALSE   !(((void*)0) != end)
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  EXPR, FCALL  list->inner
[L1039]               end = list->inner
[L1041]  COND FALSE   !(((void*)0) != end)
[L1049]  EXPR, FCALL  list->next
[L1049]               end = list->next
[L1050]  FCALL        free(list)
[L1051]               list = end
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  FCALL        list->inner

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND FALSE   !(__VERIFIER_nondet_int())
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        list->inner = malloc(sizeof(SLL))
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->next = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  end->next
[L1033]               end = end->next
[L1014]  COND FALSE   !(((void*)0) != end)
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  EXPR, FCALL  list->inner
[L1039]               end = list->inner
[L1041]  COND TRUE    ((void*)0) != end
[L1043]  COND FALSE   !(!(((void*)0) != end))
[L1043]  COND FALSE   !(0)
[L1044]  EXPR, FCALL  end->inner
[L1044]  COND FALSE   !(!(((void*)0) == end->inner))
[L1044]  COND FALSE   !(0)
[L1045]  FCALL        end->next

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND FALSE   !(__VERIFIER_nondet_int())
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        list->inner = malloc(sizeof(SLL))
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->next = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  end->next
[L1033]               end = end->next
[L1014]  COND FALSE   !(((void*)0) != end)
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  EXPR, FCALL  list->inner
[L1039]               end = list->inner
[L1041]  COND TRUE    ((void*)0) != end
[L1043]  COND FALSE   !(!(((void*)0) != end))
[L1043]  COND FALSE   !(0)
[L1044]  EXPR, FCALL  end->inner
[L1044]  COND FALSE   !(!(((void*)0) == end->inner))
[L1044]  COND FALSE   !(0)
[L1045]  EXPR, FCALL  end->next
[L1045]  COND FALSE   !(!(((void*)0) == end->next))
[L1045]  COND FALSE   !(0)
[L1046]  FCALL        free(end)

  - 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: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND FALSE   !(__VERIFIER_nondet_int())
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        list->inner = malloc(sizeof(SLL))
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->next = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  end->next
[L1033]               end = end->next
[L1014]  COND FALSE   !(((void*)0) != end)
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  EXPR, FCALL  list->inner
[L1039]               end = list->inner
[L1041]  COND FALSE   !(((void*)0) != end)
[L1049]  EXPR, FCALL  list->next
[L1049]               end = list->next
[L1050]  FCALL        free(list)
[L1051]               list = end
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  EXPR, FCALL  list->inner
[L1039]               end = list->inner
[L1041]  COND FALSE   !(((void*)0) != end)
[L1049]  EXPR, FCALL  list->next
[L1049]               end = list->next
[L1050]  FCALL        free(list)

  - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds
    Unable to prove that pointer dereference always succeeds
 Reason: abstract domain could reach this error location. 
Possible FailurePath: 
[L991]   EXPR, FCALL  malloc(sizeof(SLL))
[L991]                SLL* list = malloc(sizeof(SLL));
[L992]   FCALL        list->next = ((void*)0)
[L993]   COND FALSE   !(!(list != ((void*)0)))
[L993]   COND FALSE   !(0)
[L993]   COND FALSE   !(__VERIFIER_nondet_int())
[L993]   EXPR, FCALL  malloc(sizeof(SLL))
[L993]   FCALL        list->inner = malloc(sizeof(SLL))
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->next = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   FCALL        list->inner->inner = ((void*)0)
[L993]   EXPR, FCALL  list->inner
[L993]   EXPR         list->inner != ((void*)0) || list->inner == ((void*)0)
[L993]   COND FALSE   !(!(list->inner != ((void*)0) || list->inner == ((void*)0)))
[L993]   COND FALSE   !(0)
[L995]                SLL* end = list;
[L998]   COND FALSE   !(__VERIFIER_nondet_int())
[L1008]               end = ((void*)0)
[L1009]               end = list
[L1012]  COND FALSE   !(!(((void*)0) != end))
[L1012]  COND FALSE   !(0)
[L1014]  COND TRUE    ((void*)0) != end
[L1016]               int len = 0;
[L1017]  EXPR, FCALL  end->inner
[L1017]               SLL* inner = end->inner;
[L1018]  COND FALSE   !(((void*)0) != inner)
[L1031]  COND FALSE   !(!(len <= 1))
[L1031]  COND FALSE   !(0)
[L1033]  EXPR, FCALL  end->next
[L1033]               end = end->next
[L1014]  COND FALSE   !(((void*)0) != end)
[L1037]  COND TRUE    ((void*)0) != list
[L1039]  EXPR, FCALL  list->inner
[L1039]               end = list->inner
[L1041]  COND TRUE    ((void*)0) != end
[L1043]  COND FALSE   !(!(((void*)0) != end))
[L1043]  COND FALSE   !(0)
[L1044]  EXPR, FCALL  end->inner
[L1044]  COND FALSE   !(!(((void*)0) == end->inner))
[L1044]  COND FALSE   !(0)
[L1045]  EXPR, FCALL  end->next
[L1045]  COND FALSE   !(!(((void*)0) == end->next))
[L1045]  COND FALSE   !(0)
[L1046]  FCALL        free(end)
[L1047]               end = ((void*)0)
[L1049]  FCALL        list->next

  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: 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]: free always succeeds
    For all program executions holds that free always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
  - PositiveResult [Line: 1]: pointer dereference always succeeds
    For all program executions holds that pointer dereference always succeeds at this location
 * 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-01_false-unreach-call_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-34-58-741.csv
Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-01_false-unreach-call_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-34-58-741.csv
Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-01_false-unreach-call_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-34-58-741.csv
Received shutdown request...