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/add_last_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:20:40,909 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:20:40,911 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:20:40,926 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:20:40,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:20:40,927 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:20:40,929 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:20:40,931 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:20:40,933 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:20:40,934 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:20:40,935 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:20:40,935 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:20:40,936 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:20:40,938 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:20:40,939 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:20:40,941 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:20:40,944 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:20:40,946 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:20:40,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:20:40,949 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:20:40,951 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:20:40,957 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:20:40,957 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:20:40,958 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 16:20:40,966 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:20:40,966 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:20:40,967 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:20:40,967 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:20:40,967 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:20:40,967 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:20:40,967 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:20:40,967 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:20:40,968 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:20:40,968 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:20:40,968 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:20:40,968 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:20:40,968 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:20:40,969 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:20:40,969 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:20:40,969 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:20:40,969 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:20:40,969 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:20:40,969 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:20:40,969 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:20:40,969 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:20:40,970 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:20:40,970 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:20:40,970 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:20:40,970 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:20:40,971 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:20:40,971 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:20:40,971 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:20:40,971 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:20:40,971 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:20:40,971 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:20:40,971 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:20:40,971 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:20:40,972 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:20:40,972 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:20:41,005 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:20:41,016 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:20:41,020 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:20:41,021 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:20:41,022 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:20:41,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/add_last_unsafe_false-valid-deref.i [2018-01-24 16:20:41,193 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:20:41,198 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:20:41,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:20:41,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:20:41,205 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:20:41,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:20:41" (1/1) ... [2018-01-24 16:20:41,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3565d9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:41, skipping insertion in model container [2018-01-24 16:20:41,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:20:41" (1/1) ... [2018-01-24 16:20:41,224 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:20:41,261 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:20:41,380 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:20:41,396 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:20:41,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:41 WrapperNode [2018-01-24 16:20:41,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:20:41,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:20:41,405 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:20:41,405 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:20:41,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:41" (1/1) ... [2018-01-24 16:20:41,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:41" (1/1) ... [2018-01-24 16:20:41,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:41" (1/1) ... [2018-01-24 16:20:41,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:41" (1/1) ... [2018-01-24 16:20:41,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:41" (1/1) ... [2018-01-24 16:20:41,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:41" (1/1) ... [2018-01-24 16:20:41,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:41" (1/1) ... [2018-01-24 16:20:41,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:20:41,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:20:41,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:20:41,441 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:20:41,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:20:41" (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 16:20:41,488 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:20:41,489 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:20:41,489 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:20:41,489 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:20:41,489 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:20:41,489 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:20:41,489 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:20:41,490 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:20:41,490 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:20:41,490 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:20:41,490 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:20:41,490 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:20:41,672 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:20:41,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:20:41 BoogieIcfgContainer [2018-01-24 16:20:41,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:20:41,673 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:20:41,673 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:20:41,674 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:20:41,674 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:20:41" (1/1) ... [2018-01-24 16:20:41,736 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:20:42,622 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:20:42,644 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:20:42,649 INFO L268 AbstractInterpreter]: Visited 39 different actions 122 times. Merged at 25 different actions 60 times. Never widened. Found 6 fixpoints after 4 different actions. Largest state had 27 variables. [2018-01-24 16:20:42,650 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:20:42,651 INFO L168 Benchmark]: Toolchain (without parser) took 1457.49 ms. Allocated memory was 304.6 MB in the beginning and 360.2 MB in the end (delta: 55.6 MB). Free memory was 262.9 MB in the beginning and 307.1 MB in the end (delta: -44.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 5.3 GB. [2018-01-24 16:20:42,652 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 304.6 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:20:42,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.11 ms. Allocated memory is still 304.6 MB. Free memory was 261.9 MB in the beginning and 251.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-24 16:20:42,653 INFO L168 Benchmark]: Boogie Preprocessor took 35.96 ms. Allocated memory is still 304.6 MB. Free memory was 251.8 MB in the beginning and 250.8 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. [2018-01-24 16:20:42,653 INFO L168 Benchmark]: RCFGBuilder took 231.48 ms. Allocated memory is still 304.6 MB. Free memory was 250.8 MB in the beginning and 234.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 5.3 GB. [2018-01-24 16:20:42,654 INFO L168 Benchmark]: Abstract Interpretation took 977.31 ms. Allocated memory was 304.6 MB in the beginning and 360.2 MB in the end (delta: 55.6 MB). Free memory was 234.9 MB in the beginning and 307.1 MB in the end (delta: -72.2 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:20:42,655 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 304.6 MB. Free memory is still 268.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 205.11 ms. Allocated memory is still 304.6 MB. Free memory was 261.9 MB in the beginning and 251.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.96 ms. Allocated memory is still 304.6 MB. Free memory was 251.8 MB in the beginning and 250.8 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. * RCFGBuilder took 231.48 ms. Allocated memory is still 304.6 MB. Free memory was 250.8 MB in the beginning and 234.9 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 977.31 ms. Allocated memory was 304.6 MB in the beginning and 360.2 MB in the end (delta: 55.6 MB). Free memory was 234.9 MB in the beginning and 307.1 MB in the end (delta: -72.2 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 : 30 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 305 LocStat_NO_SUPPORTING_DISEQUALITIES : 53 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 43 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 58 TransStat_NO_SUPPORTING_DISEQUALITIES : 11 TransStat_NO_DISJUNCTIONS : 48 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.662111 RENAME_VARIABLES(MILLISECONDS) : 0.024635 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.420439 PROJECTAWAY(MILLISECONDS) : 1.825233 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001290 DISJOIN(MILLISECONDS) : 0.591896 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.052145 ADD_EQUALITY(MILLISECONDS) : 0.037420 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.017150 #CONJOIN_DISJUNCTIVE : 197 #RENAME_VARIABLES : 411 #UNFREEZE : 0 #CONJOIN : 279 #PROJECTAWAY : 247 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 44 #RENAME_VARIABLES_DISJUNCTIVE : 385 #ADD_EQUALITY : 57 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 10 - 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 length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 [L544] EXPR, FCALL __builtin_alloca (length) [L544] int *arr = __builtin_alloca (length); [L545] COND FALSE !(!arr) [L546] int *a = arr; [L547] FCALL \read(*a) - 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 length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 [L544] EXPR, FCALL __builtin_alloca (length) [L544] int *arr = __builtin_alloca (length); [L545] COND FALSE !(!arr) [L546] int *a = arr; [L547] FCALL \read(*a) [L547] FCALL arr + length - 1 - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: abstract domain could reach this error location. Possible FailurePath: [L541] int i, j; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 [L544] EXPR, FCALL __builtin_alloca (length) [L544] int *arr = __builtin_alloca (length); [L545] COND FALSE !(!arr) [L546] int *a = arr; [L547] EXPR, FCALL \read(*a) [L547] EXPR, FCALL arr + length - 1 [L547] COND TRUE *a != *(arr + length - 1) [L548] FCALL \read(*a) - 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 length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 [L544] EXPR, FCALL __builtin_alloca (length) [L544] int *arr = __builtin_alloca (length); [L545] COND FALSE !(!arr) [L546] int *a = arr; [L547] EXPR, FCALL \read(*a) [L547] EXPR, FCALL arr + length - 1 [L547] COND TRUE *a != *(arr + length - 1) [L548] FCALL \read(*a) [L548] FCALL arr + length - 1 - UnprovableResult [Line: 1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: abstract domain could reach this error location. Possible FailurePath: [L541] int i, j; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 [L544] EXPR, FCALL __builtin_alloca (length) [L544] int *arr = __builtin_alloca (length); [L545] COND FALSE !(!arr) [L546] int *a = arr; [L547] EXPR, FCALL \read(*a) [L547] EXPR, FCALL arr + length - 1 [L547] COND TRUE *a != *(arr + length - 1) [L548] EXPR, FCALL \read(*a) [L548] EXPR, FCALL arr + length - 1 [L548] FCALL *a += *(arr + length - 1) - UnprovableResult [Line: 540]: 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: [L541] int i, j; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 [L543] length = 1 [L544] EXPR, FCALL __builtin_alloca (length) [L544] int *arr = __builtin_alloca (length); [L545] COND FALSE !(!arr) [L546] int *a = arr; [L547] EXPR, FCALL \read(*a) [L547] EXPR, FCALL arr + length - 1 [L547] COND FALSE !(*a != *(arr + length - 1)) [L551] return 0; - 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/add_last_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-20-42-665.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-20-42-665.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/add_last_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-20-42-665.csv Received shutdown request...