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/array-memsafety/count_down_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:20:44,419 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:20:44,421 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:20:44,434 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:20:44,434 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:20:44,435 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:20:44,436 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:20:44,438 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:20:44,441 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:20:44,442 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:20:44,443 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:20:44,443 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:20:44,444 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:20:44,445 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:20:44,446 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:20:44,448 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:20:44,451 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:20:44,453 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:20:44,454 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:20:44,456 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:20:44,458 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:20:44,465 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 16:20:44,473 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:20:44,474 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:20:44,474 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:20:44,475 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:20:44,475 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:20:44,475 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:20:44,475 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:20:44,475 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:20:44,475 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:20:44,476 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:20:44,476 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:20:44,476 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:20:44,476 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:20:44,476 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:20:44,476 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:20:44,476 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:20:44,477 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:20:44,477 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:20:44,477 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:20:44,477 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:20:44,477 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:20:44,477 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:20:44,477 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:20:44,478 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:20:44,478 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:20:44,478 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:20:44,478 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:20:44,478 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:20:44,479 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:20:44,479 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:20:44,479 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:20:44,479 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:20:44,479 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:20:44,480 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:20:44,480 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:20:44,514 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:20:44,526 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:20:44,530 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:20:44,531 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:20:44,531 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:20:44,532 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/count_down_unsafe_false-valid-deref.i [2018-01-24 16:20:44,711 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:20:44,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:20:44,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:20:44,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:20:44,722 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:20:44,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:20:44" (1/1) ... [2018-01-24 16:20:44,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdf0e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:44, skipping insertion in model container [2018-01-24 16:20:44,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:20:44" (1/1) ... [2018-01-24 16:20:44,739 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:20:44,779 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:20:44,904 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:20:44,921 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:20:44,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:44 WrapperNode [2018-01-24 16:20:44,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:20:44,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:20:44,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:20:44,929 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:20:44,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:44" (1/1) ... [2018-01-24 16:20:44,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:44" (1/1) ... [2018-01-24 16:20:44,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:44" (1/1) ... [2018-01-24 16:20:44,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:44" (1/1) ... [2018-01-24 16:20:44,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:44" (1/1) ... [2018-01-24 16:20:44,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:44" (1/1) ... [2018-01-24 16:20:44,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:44" (1/1) ... [2018-01-24 16:20:44,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:20:44,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:20:44,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:20:44,958 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:20:44,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:44" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:20:45,009 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:20:45,009 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:20:45,009 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:20:45,010 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:20:45,010 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:20:45,010 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:20:45,010 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:20:45,010 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:20:45,010 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:20:45,010 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:20:45,010 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:20:45,010 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:20:45,221 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:20:45,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:20:45 BoogieIcfgContainer [2018-01-24 16:20:45,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:20:45,222 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:20:45,222 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:20:45,223 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:20:45,223 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:20:45" (1/1) ... [2018-01-24 16:20:45,265 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:20:46,262 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:20:46,280 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:20:46,286 INFO L268 AbstractInterpreter]: Visited 50 different actions 226 times. Merged at 34 different actions 119 times. Never widened. Found 28 fixpoints after 10 different actions. Largest state had 26 variables. [2018-01-24 16:20:46,289 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:20:46,290 INFO L168 Benchmark]: Toolchain (without parser) took 1578.11 ms. Allocated memory was 302.5 MB in the beginning and 362.3 MB in the end (delta: 59.8 MB). Free memory was 261.6 MB in the beginning and 248.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 72.7 MB. Max. memory is 5.3 GB. [2018-01-24 16:20:46,290 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 302.5 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:20:46,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.30 ms. Allocated memory is still 302.5 MB. Free memory was 261.6 MB in the beginning and 251.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:20:46,291 INFO L168 Benchmark]: Boogie Preprocessor took 29.44 ms. Allocated memory is still 302.5 MB. Free memory was 251.6 MB in the beginning and 249.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:20:46,292 INFO L168 Benchmark]: RCFGBuilder took 263.74 ms. Allocated memory is still 302.5 MB. Free memory was 249.6 MB in the beginning and 232.9 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 5.3 GB. [2018-01-24 16:20:46,292 INFO L168 Benchmark]: Abstract Interpretation took 1066.45 ms. Allocated memory was 302.5 MB in the beginning and 362.3 MB in the end (delta: 59.8 MB). Free memory was 232.9 MB in the beginning and 248.6 MB in the end (delta: -15.7 MB). Peak memory consumption was 44.1 MB. Max. memory is 5.3 GB. [2018-01-24 16:20:46,294 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 302.5 MB. Free memory is still 267.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 212.30 ms. Allocated memory is still 302.5 MB. Free memory was 261.6 MB in the beginning and 251.6 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.44 ms. Allocated memory is still 302.5 MB. Free memory was 251.6 MB in the beginning and 249.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 263.74 ms. Allocated memory is still 302.5 MB. Free memory was 249.6 MB in the beginning and 232.9 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 1066.45 ms. Allocated memory was 302.5 MB in the beginning and 362.3 MB in the end (delta: 59.8 MB). Free memory was 232.9 MB in the beginning and 248.6 MB in the end (delta: -15.7 MB). Peak memory consumption was 44.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 37 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 347 LocStat_NO_SUPPORTING_DISEQUALITIES : 53 LocStat_NO_DISJUNCTIONS : -74 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 54 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 59 TransStat_NO_SUPPORTING_DISEQUALITIES : 9 TransStat_NO_DISJUNCTIONS : 56 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.023582 RENAME_VARIABLES(MILLISECONDS) : 0.293132 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.001205 PROJECTAWAY(MILLISECONDS) : 0.227651 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001342 DISJOIN(MILLISECONDS) : 0.324754 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.321473 ADD_EQUALITY(MILLISECONDS) : 0.021238 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.019230 #CONJOIN_DISJUNCTIVE : 361 #RENAME_VARIABLES : 737 #UNFREEZE : 0 #CONJOIN : 443 #PROJECTAWAY : 412 #ADD_WEAK_EQUALITY : 8 #DISJOIN : 44 #RENAME_VARIABLES_DISJUNCTIVE : 722 #ADD_EQUALITY : 60 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 8 - 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: [L541] int i, j; [L542] int val; [L543] int length = __VERIFIER_nondet_int(); [L544] COND TRUE length < 1 [L544] length = 1 [L545] EXPR, FCALL __builtin_alloca (length) [L545] int *arr = __builtin_alloca (length); [L546] COND FALSE !(!arr) [L547] i=0 [L547] COND TRUE i 0 [L556] FCALL arr[j] - 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: [L541] int i, j; [L542] int val; [L543] int length = __VERIFIER_nondet_int(); [L544] COND TRUE length < 1 [L544] length = 1 [L545] EXPR, FCALL __builtin_alloca (length) [L545] int *arr = __builtin_alloca (length); [L546] COND FALSE !(!arr) [L547] i=0 [L547] COND FALSE !(i 0 [L556] EXPR, FCALL arr[j] [L556] arr[j]-- - 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/count_down_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-20-46-304.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/count_down_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-20-46-304.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/count_down_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-20-46-304.csv Received shutdown request...