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_precise.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 21:33:39,996 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 21:33:39,998 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 21:33:40,011 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 21:33:40,011 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 21:33:40,012 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 21:33:40,013 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 21:33:40,015 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 21:33:40,016 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 21:33:40,017 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 21:33:40,017 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 21:33:40,018 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 21:33:40,018 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 21:33:40,019 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 21:33:40,020 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 21:33:40,023 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 21:33:40,025 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 21:33:40,027 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 21:33:40,028 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 21:33:40,030 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 21:33:40,032 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 21:33:40,038 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_precise.epf [2018-01-24 21:33:40,047 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 21:33:40,048 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 21:33:40,049 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 21:33:40,049 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 21:33:40,049 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 21:33:40,049 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 21:33:40,049 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 21:33:40,050 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 21:33:40,050 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 21:33:40,050 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 21:33:40,051 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 21:33:40,051 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 21:33:40,051 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 21:33:40,051 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 21:33:40,051 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 21:33:40,052 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 21:33:40,052 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 21:33:40,052 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 21:33:40,052 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 21:33:40,052 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 21:33:40,053 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 21:33:40,053 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 21:33:40,053 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 21:33:40,053 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 21:33:40,053 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 21:33:40,054 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 21:33:40,054 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 21:33:40,054 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 21:33:40,054 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 21:33:40,054 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 21:33:40,055 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 21:33:40,055 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 21:33:40,055 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 21:33:40,056 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 21:33:40,056 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 21:33:40,092 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 21:33:40,108 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 21:33:40,113 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 21:33:40,114 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 21:33:40,115 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 21:33:40,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-01-24 21:33:40,296 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 21:33:40,301 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 21:33:40,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 21:33:40,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 21:33:40,307 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 21:33:40,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:33:40" (1/1) ... [2018-01-24 21:33:40,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a59f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:33:40, skipping insertion in model container [2018-01-24 21:33:40,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:33:40" (1/1) ... [2018-01-24 21:33:40,325 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:33:40,362 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:33:40,477 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:33:40,493 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:33:40,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:33:40 WrapperNode [2018-01-24 21:33:40,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 21:33:40,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 21:33:40,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 21:33:40,502 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 21:33:40,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:33:40" (1/1) ... [2018-01-24 21:33:40,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:33:40" (1/1) ... [2018-01-24 21:33:40,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:33:40" (1/1) ... [2018-01-24 21:33:40,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:33:40" (1/1) ... [2018-01-24 21:33:40,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:33:40" (1/1) ... [2018-01-24 21:33:40,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:33:40" (1/1) ... [2018-01-24 21:33:40,529 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:33:40" (1/1) ... [2018-01-24 21:33:40,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 21:33:40,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 21:33:40,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 21:33:40,532 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 21:33:40,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:33:40" (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 21:33:40,576 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 21:33:40,577 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 21:33:40,577 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-01-24 21:33:40,577 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 21:33:40,577 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 21:33:40,577 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 21:33:40,577 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 21:33:40,577 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 21:33:40,577 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 21:33:40,578 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 21:33:40,578 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlen [2018-01-24 21:33:40,578 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 21:33:40,578 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 21:33:40,578 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 21:33:40,732 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 21:33:40,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:33:40 BoogieIcfgContainer [2018-01-24 21:33:40,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 21:33:40,733 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 21:33:40,733 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 21:33:40,733 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 21:33:40,734 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:33:40" (1/1) ... [2018-01-24 21:33:40,781 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 21:34:16,392 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 21:34:16,411 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 21:34:16,415 INFO L268 AbstractInterpreter]: Visited 33 different actions 92 times. Merged at 21 different actions 41 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 20 variables. [2018-01-24 21:34:16,417 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 21:34:16,418 INFO L168 Benchmark]: Toolchain (without parser) took 36121.20 ms. Allocated memory was 298.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 258.4 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 70.6 MB. Max. memory is 5.3 GB. [2018-01-24 21:34:16,419 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 298.3 MB. Free memory is still 264.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 21:34:16,419 INFO L168 Benchmark]: CACSL2BoogieTranslator took 199.13 ms. Allocated memory is still 298.3 MB. Free memory was 257.4 MB in the beginning and 247.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-24 21:34:16,419 INFO L168 Benchmark]: Boogie Preprocessor took 29.82 ms. Allocated memory is still 298.3 MB. Free memory was 247.3 MB in the beginning and 246.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-24 21:34:16,420 INFO L168 Benchmark]: RCFGBuilder took 200.85 ms. Allocated memory is still 298.3 MB. Free memory was 246.4 MB in the beginning and 231.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. [2018-01-24 21:34:16,420 INFO L168 Benchmark]: Abstract Interpretation took 35684.05 ms. Allocated memory was 298.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 231.4 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 43.6 MB. Max. memory is 5.3 GB. [2018-01-24 21:34:16,422 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 298.3 MB. Free memory is still 264.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 199.13 ms. Allocated memory is still 298.3 MB. Free memory was 257.4 MB in the beginning and 247.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.82 ms. Allocated memory is still 298.3 MB. Free memory was 247.3 MB in the beginning and 246.4 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 200.85 ms. Allocated memory is still 298.3 MB. Free memory was 246.4 MB in the beginning and 231.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 35684.05 ms. Allocated memory was 298.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 231.4 MB in the beginning and 1.5 GB in the end (delta: -1.3 GB). Peak memory consumption was 43.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 28 LocStat_MAX_WEQGRAPH_SIZE : 4 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 227 LocStat_NO_SUPPORTING_DISEQUALITIES : 27 LocStat_NO_DISJUNCTIONS : -56 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 39 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 47 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 40 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.463710 RENAME_VARIABLES(MILLISECONDS) : 0.013773 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.318624 PROJECTAWAY(MILLISECONDS) : 0.370398 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.104449 DISJOIN(MILLISECONDS) : 0.237199 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.026820 ADD_EQUALITY(MILLISECONDS) : 0.025653 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008748 #CONJOIN_DISJUNCTIVE : 150 #RENAME_VARIABLES : 337 #UNFREEZE : 0 #CONJOIN : 247 #PROJECTAWAY : 238 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 37 #RENAME_VARIABLES_DISJUNCTIVE : 334 #ADD_EQUALITY : 48 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 5 - 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: [L549] int length1 = __VERIFIER_nondet_int(); [L550] COND TRUE length1 < 1 [L551] length1 = 1 [L553] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L553] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L554] 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: [L549] int length1 = __VERIFIER_nondet_int(); [L550] COND TRUE length1 < 1 [L551] length1 = 1 [L553] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L553] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L554] FCALL nondetString1[length1-1] = '\0' [L555] CALL cstrlen(nondetString1) [L543] const char *s; [L544] s = str [L544] FCALL \read(*s) - UnprovableResult [Line: 548]: 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: [L549] int length1 = __VERIFIER_nondet_int(); [L550] COND TRUE length1 < 1 [L551] length1 = 1 [L553] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L553] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L554] FCALL nondetString1[length1-1] = '\0' [L555] CALL, EXPR cstrlen(nondetString1) [L543] const char *s; [L544] s = str [L544] EXPR, FCALL \read(*s) [L544] COND FALSE !(*s) [L546] RET return (s - str); [L555] EXPR cstrlen(nondetString1) [L555] return cstrlen(nondetString1); - 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_cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_precise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_21-34-16-433.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_precise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_21-34-16-433.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_precise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_21-34-16-433.csv Received shutdown request...