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/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:22:37,332 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:22:37,334 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:22:37,348 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:22:37,348 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:22:37,349 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:22:37,351 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:22:37,353 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:22:37,355 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:22:37,356 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:22:37,357 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:22:37,357 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:22:37,358 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:22:37,359 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:22:37,360 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:22:37,362 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:22:37,364 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:22:37,366 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:22:37,368 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:22:37,369 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:22:37,371 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:22:37,376 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:22:37,377 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:22:37,377 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 16:22:37,387 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:22:37,387 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:22:37,388 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:22:37,388 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:22:37,389 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:22:37,389 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:22:37,389 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:22:37,389 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:22:37,390 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:22:37,390 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:22:37,390 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:22:37,391 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:22:37,391 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:22:37,391 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:22:37,391 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:22:37,391 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:22:37,392 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:22:37,392 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:22:37,392 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:22:37,392 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:22:37,392 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:22:37,393 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:22:37,393 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:22:37,393 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:22:37,393 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:22:37,394 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:22:37,394 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:22:37,394 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:22:37,394 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:22:37,394 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:22:37,395 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:22:37,395 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:22:37,395 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:22:37,396 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:22:37,396 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:22:37,431 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:22:37,444 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:22:37,448 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:22:37,450 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:22:37,451 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:22:37,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:22:37,610 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:22:37,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:22:37,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:37,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:22:37,626 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:22:37,626 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:37" (1/1) ... [2018-01-24 16:22:37,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4661c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:37, skipping insertion in model container [2018-01-24 16:22:37,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:37" (1/1) ... [2018-01-24 16:22:37,649 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:37,692 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:37,813 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:37,829 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:37,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:37 WrapperNode [2018-01-24 16:22:37,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:37,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:22:37,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:22:37,835 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:22:37,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:37" (1/1) ... [2018-01-24 16:22:37,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:37" (1/1) ... [2018-01-24 16:22:37,857 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:37" (1/1) ... [2018-01-24 16:22:37,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:37" (1/1) ... [2018-01-24 16:22:37,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:37" (1/1) ... [2018-01-24 16:22:37,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:37" (1/1) ... [2018-01-24 16:22:37,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:37" (1/1) ... [2018-01-24 16:22:37,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:22:37,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:22:37,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:22:37,868 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:22:37,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:37" (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 16:22:37,916 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:22:37,916 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:22:37,916 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrspn [2018-01-24 16:22:37,916 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:22:37,917 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:22:37,917 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:22:37,917 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:22:37,917 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:22:37,917 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:22:37,918 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:22:37,918 INFO L128 BoogieDeclarations]: Found specification of procedure cstrspn [2018-01-24 16:22:37,918 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:22:37,918 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:22:37,918 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:22:38,122 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:22:38,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:38 BoogieIcfgContainer [2018-01-24 16:22:38,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:22:38,123 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:22:38,123 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:22:38,124 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:22:38,124 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:38" (1/1) ... [2018-01-24 16:22:38,168 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:22:40,007 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:22:40,029 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:22:40,033 INFO L268 AbstractInterpreter]: Visited 49 different actions 377 times. Merged at 34 different actions 205 times. Never widened. Found 41 fixpoints after 8 different actions. Largest state had 31 variables. [2018-01-24 16:22:40,035 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:22:40,036 INFO L168 Benchmark]: Toolchain (without parser) took 2425.75 ms. Allocated memory was 304.1 MB in the beginning and 389.5 MB in the end (delta: 85.5 MB). Free memory was 264.1 MB in the beginning and 329.9 MB in the end (delta: -65.8 MB). Peak memory consumption was 19.7 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:40,037 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 304.1 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:22:40,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.21 ms. Allocated memory is still 304.1 MB. Free memory was 263.1 MB in the beginning and 252.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:40,038 INFO L168 Benchmark]: Boogie Preprocessor took 32.04 ms. Allocated memory is still 304.1 MB. Free memory was 252.9 MB in the beginning and 250.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:40,039 INFO L168 Benchmark]: RCFGBuilder took 255.38 ms. Allocated memory is still 304.1 MB. Free memory was 250.9 MB in the beginning and 234.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:40,039 INFO L168 Benchmark]: Abstract Interpretation took 1912.01 ms. Allocated memory was 304.1 MB in the beginning and 389.5 MB in the end (delta: 85.5 MB). Free memory was 234.3 MB in the beginning and 329.9 MB in the end (delta: -95.6 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:22:40,041 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 304.1 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 217.21 ms. Allocated memory is still 304.1 MB. Free memory was 263.1 MB in the beginning and 252.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.04 ms. Allocated memory is still 304.1 MB. Free memory was 252.9 MB in the beginning and 250.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 255.38 ms. Allocated memory is still 304.1 MB. Free memory was 250.9 MB in the beginning and 234.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 1912.01 ms. Allocated memory was 304.1 MB in the beginning and 389.5 MB in the end (delta: 85.5 MB). Free memory was 234.3 MB in the beginning and 329.9 MB in the end (delta: -95.6 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 : 41 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 437 LocStat_NO_SUPPORTING_DISEQUALITIES : 97 LocStat_NO_DISJUNCTIONS : -82 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 55 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 80 TransStat_NO_SUPPORTING_DISEQUALITIES : 11 TransStat_NO_DISJUNCTIONS : 58 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.942279 RENAME_VARIABLES(MILLISECONDS) : 0.018608 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.384504 PROJECTAWAY(MILLISECONDS) : 1.233262 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002637 DISJOIN(MILLISECONDS) : 0.331484 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.040265 ADD_EQUALITY(MILLISECONDS) : 0.039383 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.010666 #CONJOIN_DISJUNCTIVE : 582 #RENAME_VARIABLES : 1282 #UNFREEZE : 0 #CONJOIN : 818 #PROJECTAWAY : 760 #ADD_WEAK_EQUALITY : 11 #DISJOIN : 130 #RENAME_VARIABLES_DISJUNCTIVE : 1258 #ADD_EQUALITY : 82 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 9 - 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: [L553] int length1 = __VERIFIER_nondet_int(); [L554] int length2 = __VERIFIER_nondet_int(); [L555] COND TRUE length1 < 1 [L556] length1 = 1 [L558] COND FALSE !(length2 < 1) [L561] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L561] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L562] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L562] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L563] FCALL nondetString1[length1-1] = '\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: [L553] int length1 = __VERIFIER_nondet_int(); [L554] int length2 = __VERIFIER_nondet_int(); [L555] COND TRUE length1 < 1 [L556] length1 = 1 [L558] COND FALSE !(length2 < 1) [L561] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L561] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L562] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L562] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L563] FCALL nondetString1[length1-1] = '\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: [L553] int length1 = __VERIFIER_nondet_int(); [L554] int length2 = __VERIFIER_nondet_int(); [L555] COND TRUE length1 < 1 [L556] length1 = 1 [L558] COND FALSE !(length2 < 1) [L561] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L561] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L562] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L562] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L563] FCALL nondetString1[length1-1] = '\0' [L564] FCALL nondetString2[length2-1] = '\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: [L553] int length1 = __VERIFIER_nondet_int(); [L554] int length2 = __VERIFIER_nondet_int(); [L555] COND TRUE length1 < 1 [L556] length1 = 1 [L558] COND FALSE !(length2 < 1) [L561] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L561] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L562] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L562] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L563] FCALL nondetString1[length1-1] = '\0' [L564] FCALL nondetString2[length2-1] = '\0' [L565] CALL cstrspn(nondetString1,nondetString2) [L543] const char *p = s1, *spanp; [L544] char c, sc; [L546] p++ - 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: [L553] int length1 = __VERIFIER_nondet_int(); [L554] int length2 = __VERIFIER_nondet_int(); [L555] COND TRUE length1 < 1 [L556] length1 = 1 [L558] COND FALSE !(length2 < 1) [L561] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L561] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L562] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L562] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L563] FCALL nondetString1[length1-1] = '\0' [L564] FCALL nondetString2[length2-1] = '\0' [L565] CALL cstrspn(nondetString1,nondetString2) [L543] const char *p = s1, *spanp; [L544] char c, sc; [L546] EXPR p++ [L546] c = *p++ [L547] spanp = s2 [L547] spanp++ - UnprovableResult [Line: 552]: 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: [L553] int length1 = __VERIFIER_nondet_int(); [L554] int length2 = __VERIFIER_nondet_int(); [L555] COND TRUE length1 < 1 [L556] length1 = 1 [L558] COND FALSE !(length2 < 1) [L561] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L561] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L562] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L562] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L563] FCALL nondetString1[length1-1] = '\0' [L564] FCALL nondetString2[length2-1] = '\0' [L565] CALL, EXPR cstrspn(nondetString1,nondetString2) [L543] const char *p = s1, *spanp; [L544] char c, sc; [L546] EXPR p++ [L546] c = *p++ [L547] spanp = s2 [L547] EXPR spanp++ [L547] EXPR sc = *spanp++ [L547] COND FALSE !((sc = *spanp++) != 0) [L550] RET return (p - 1 - s1); [L565] EXPR cstrspn(nondetString1,nondetString2) [L565] return cstrspn(nondetString1,nondetString2); - 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/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-22-40-052.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-22-40-052.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-22-40-052.csv Received shutdown request...