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_cstrlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:22:24,176 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:22:24,178 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:22:24,191 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:22:24,191 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:22:24,192 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:22:24,193 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:22:24,195 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:22:24,197 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:22:24,198 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:22:24,199 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:22:24,199 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:22:24,200 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:22:24,201 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:22:24,202 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:22:24,204 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:22:24,206 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:22:24,208 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:22:24,209 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:22:24,211 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:22:24,213 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:22:24,218 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:22:24,219 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:22:24,219 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 16:22:24,229 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:22:24,229 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:22:24,230 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:22:24,230 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:22:24,230 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:22:24,231 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:22:24,231 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:22:24,231 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:22:24,232 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:22:24,232 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:22:24,232 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:22:24,232 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:22:24,233 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:22:24,233 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:22:24,233 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:22:24,233 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:22:24,233 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:22:24,234 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:22:24,234 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:22:24,234 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:22:24,234 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:22:24,235 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:22:24,235 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:22:24,235 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:22:24,235 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:22:24,235 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:22:24,236 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:22:24,236 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:22:24,236 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:22:24,236 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:22:24,236 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:22:24,237 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:22:24,237 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:22:24,238 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:22:24,238 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:22:24,274 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:22:24,287 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:22:24,291 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:22:24,293 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:22:24,294 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:22:24,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrlen-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:22:24,476 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:22:24,483 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:22:24,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:24,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:22:24,490 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:22:24,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:24" (1/1) ... [2018-01-24 16:22:24,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f336ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:24, skipping insertion in model container [2018-01-24 16:22:24,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:24" (1/1) ... [2018-01-24 16:22:24,510 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:24,549 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:24,664 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:24,678 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:24,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:24 WrapperNode [2018-01-24 16:22:24,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:24,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:22:24,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:22:24,687 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:22:24,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:24" (1/1) ... [2018-01-24 16:22:24,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:24" (1/1) ... [2018-01-24 16:22:24,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:24" (1/1) ... [2018-01-24 16:22:24,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:24" (1/1) ... [2018-01-24 16:22:24,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:24" (1/1) ... [2018-01-24 16:22:24,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:24" (1/1) ... [2018-01-24 16:22:24,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:24" (1/1) ... [2018-01-24 16:22:24,722 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:22:24,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:22:24,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:22:24,723 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:22:24,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:24" (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 16:22:24,770 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:22:24,770 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:22:24,770 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-01-24 16:22:24,770 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:22:24,770 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:22:24,770 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:22:24,771 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:22:24,771 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:22:24,771 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:22:24,771 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:22:24,771 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlen [2018-01-24 16:22:24,771 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:22:24,772 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:22:24,772 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:22:24,946 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:22:24,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:24 BoogieIcfgContainer [2018-01-24 16:22:24,947 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:22:24,948 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:22:24,948 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:22:24,948 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:22:24,949 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:24" (1/1) ... [2018-01-24 16:22:25,000 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:22:25,612 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:22:25,632 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:22:25,636 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 16:22:25,638 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:22:25,639 INFO L168 Benchmark]: Toolchain (without parser) took 1162.24 ms. Allocated memory was 303.6 MB in the beginning and 327.2 MB in the end (delta: 23.6 MB). Free memory was 263.6 MB in the beginning and 246.9 MB in the end (delta: 16.7 MB). Peak memory consumption was 40.3 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:25,640 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 303.6 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:22:25,641 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.39 ms. Allocated memory is still 303.6 MB. Free memory was 262.6 MB in the beginning and 252.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:25,641 INFO L168 Benchmark]: Boogie Preprocessor took 36.00 ms. Allocated memory is still 303.6 MB. Free memory was 252.6 MB in the beginning and 251.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-24 16:22:25,642 INFO L168 Benchmark]: RCFGBuilder took 224.51 ms. Allocated memory is still 303.6 MB. Free memory was 251.6 MB in the beginning and 237.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:25,642 INFO L168 Benchmark]: Abstract Interpretation took 690.74 ms. Allocated memory was 303.6 MB in the beginning and 327.2 MB in the end (delta: 23.6 MB). Free memory was 237.0 MB in the beginning and 246.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:25,645 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 303.6 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 202.39 ms. Allocated memory is still 303.6 MB. Free memory was 262.6 MB in the beginning and 252.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.00 ms. Allocated memory is still 303.6 MB. Free memory was 252.6 MB in the beginning and 251.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 224.51 ms. Allocated memory is still 303.6 MB. Free memory was 251.6 MB in the beginning and 237.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 690.74 ms. Allocated memory was 303.6 MB in the beginning and 327.2 MB in the end (delta: 23.6 MB). Free memory was 237.0 MB in the beginning and 246.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 13.7 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 : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 205 LocStat_NO_SUPPORTING_DISEQUALITIES : 26 LocStat_NO_DISJUNCTIONS : -56 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 39 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 47 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 40 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.467436 RENAME_VARIABLES(MILLISECONDS) : 0.030496 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.217889 PROJECTAWAY(MILLISECONDS) : 1.104549 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002401 DISJOIN(MILLISECONDS) : 0.318496 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.055704 ADD_EQUALITY(MILLISECONDS) : 0.061481 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.023530 #CONJOIN_DISJUNCTIVE : 148 #RENAME_VARIABLES : 329 #UNFREEZE : 0 #CONJOIN : 241 #PROJECTAWAY : 236 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 37 #RENAME_VARIABLES_DISJUNCTIVE : 326 #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_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-22-25-657.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_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-22-25-657.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_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-22-25-657.csv Received shutdown request...