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.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 14:01:20,209 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 14:01:20,210 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 14:01:20,224 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 14:01:20,225 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 14:01:20,225 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 14:01:20,227 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 14:01:20,228 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 14:01:20,231 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 14:01:20,231 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 14:01:20,232 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 14:01:20,233 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 14:01:20,234 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 14:01:20,235 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 14:01:20,236 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 14:01:20,238 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 14:01:20,240 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 14:01:20,242 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 14:01:20,243 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 14:01:20,244 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 14:01:20,246 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 14:01:20,251 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 14:01:20,252 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 14:01:20,252 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.epf [2018-01-24 14:01:20,262 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 14:01:20,262 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 14:01:20,263 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 14:01:20,263 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 14:01:20,263 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 14:01:20,264 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 14:01:20,264 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 14:01:20,264 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 14:01:20,265 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 14:01:20,265 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 14:01:20,265 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 14:01:20,265 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 14:01:20,265 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 14:01:20,266 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 14:01:20,266 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 14:01:20,266 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 14:01:20,266 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 14:01:20,266 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 14:01:20,267 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 14:01:20,267 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 14:01:20,267 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 14:01:20,267 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 14:01:20,267 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 14:01:20,268 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 14:01:20,268 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 14:01:20,268 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 14:01:20,268 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 14:01:20,269 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 14:01:20,269 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 14:01:20,269 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 14:01:20,269 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 14:01:20,269 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 14:01:20,270 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 14:01:20,270 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 14:01:20,304 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 14:01:20,316 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 14:01:20,320 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 14:01:20,322 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 14:01:20,322 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 14:01:20,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i [2018-01-24 14:01:20,517 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 14:01:20,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 14:01:20,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 14:01:20,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 14:01:20,530 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 14:01:20,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 02:01:20" (1/1) ... [2018-01-24 14:01:20,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5054e5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:01:20, skipping insertion in model container [2018-01-24 14:01:20,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 02:01:20" (1/1) ... [2018-01-24 14:01:20,546 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 14:01:20,582 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 14:01:20,695 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 14:01:20,710 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 14:01:20,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:01:20 WrapperNode [2018-01-24 14:01:20,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 14:01:20,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 14:01:20,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 14:01:20,717 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 14:01:20,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:01:20" (1/1) ... [2018-01-24 14:01:20,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:01:20" (1/1) ... [2018-01-24 14:01:20,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:01:20" (1/1) ... [2018-01-24 14:01:20,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:01:20" (1/1) ... [2018-01-24 14:01:20,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:01:20" (1/1) ... [2018-01-24 14:01:20,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:01:20" (1/1) ... [2018-01-24 14:01:20,747 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:01:20" (1/1) ... [2018-01-24 14:01:20,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 14:01:20,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 14:01:20,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 14:01:20,749 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 14:01:20,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:01:20" (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 14:01:20,793 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 14:01:20,793 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 14:01:20,793 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrcmp [2018-01-24 14:01:20,793 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 14:01:20,793 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 14:01:20,793 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 14:01:20,793 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 14:01:20,794 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 14:01:20,794 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 14:01:20,794 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 14:01:20,794 INFO L128 BoogieDeclarations]: Found specification of procedure cstrcmp [2018-01-24 14:01:20,794 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 14:01:20,794 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 14:01:20,794 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 14:01:21,006 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 14:01:21,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 02:01:21 BoogieIcfgContainer [2018-01-24 14:01:21,007 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 14:01:21,008 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 14:01:21,008 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 14:01:21,008 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 14:01:21,009 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 02:01:21" (1/1) ... [2018-01-24 14:01:21,053 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 14:01:46,257 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 14:01:46,280 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 14:01:46,284 INFO L268 AbstractInterpreter]: Visited 57 different actions 351 times. Merged at 40 different actions 169 times. Never widened. Found 18 fixpoints after 6 different actions. Largest state had 30 variables. [2018-01-24 14:01:46,286 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 14:01:46,287 INFO L168 Benchmark]: Toolchain (without parser) took 25769.15 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 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 191.0 MB. Max. memory is 5.3 GB. [2018-01-24 14:01:46,288 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 298.3 MB. Free memory is still 264.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 14:01:46,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.78 ms. Allocated memory is still 298.3 MB. Free memory was 257.4 MB in the beginning and 247.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-24 14:01:46,288 INFO L168 Benchmark]: Boogie Preprocessor took 31.93 ms. Allocated memory is still 298.3 MB. Free memory was 247.2 MB in the beginning and 245.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 14:01:46,289 INFO L168 Benchmark]: RCFGBuilder took 258.39 ms. Allocated memory is still 298.3 MB. Free memory was 245.2 MB in the beginning and 227.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 5.3 GB. [2018-01-24 14:01:46,289 INFO L168 Benchmark]: Abstract Interpretation took 25278.23 ms. Allocated memory was 298.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 226.5 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 159.2 MB. Max. memory is 5.3 GB. [2018-01-24 14:01:46,291 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 298.3 MB. Free memory is still 264.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 192.78 ms. Allocated memory is still 298.3 MB. Free memory was 257.4 MB in the beginning and 247.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 31.93 ms. Allocated memory is still 298.3 MB. Free memory was 247.2 MB in the beginning and 245.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 258.39 ms. Allocated memory is still 298.3 MB. Free memory was 245.2 MB in the beginning and 227.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 25278.23 ms. Allocated memory was 298.3 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 226.5 MB in the beginning and 1.4 GB in the end (delta: -1.1 GB). Peak memory consumption was 159.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 45 LocStat_MAX_WEQGRAPH_SIZE : 5 LocStat_MAX_SIZEOF_WEQEDGELABEL : 3 LocStat_NO_SUPPORTING_EQUALITIES : 629 LocStat_NO_SUPPORTING_DISEQUALITIES : 110 LocStat_NO_DISJUNCTIONS : -90 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 63 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 91 TransStat_NO_SUPPORTING_DISEQUALITIES : 14 TransStat_NO_DISJUNCTIONS : 69 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 5.853953 RENAME_VARIABLES(MILLISECONDS) : 0.764903 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 5.815959 PROJECTAWAY(MILLISECONDS) : 5.787949 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.043242 DISJOIN(MILLISECONDS) : 0.245706 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.785927 ADD_EQUALITY(MILLISECONDS) : 0.016340 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.012684 #CONJOIN_DISJUNCTIVE : 593 #RENAME_VARIABLES : 1338 #UNFREEZE : 0 #CONJOIN : 879 #PROJECTAWAY : 785 #ADD_WEAK_EQUALITY : 11 #DISJOIN : 215 #RENAME_VARIABLES_DISJUNCTIVE : 1269 #ADD_EQUALITY : 93 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 12 - 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] int length2 = __VERIFIER_nondet_int(); [L551] COND TRUE length1 < 1 [L552] length1 = 1 [L554] COND TRUE length2 < 1 [L555] length2 = 1 [L557] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L557] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L558] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L558] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L559] 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] int length2 = __VERIFIER_nondet_int(); [L551] COND TRUE length1 < 1 [L552] length1 = 1 [L554] COND TRUE length2 < 1 [L555] length2 = 1 [L557] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L557] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L558] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L558] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L559] FCALL nondetString1[length1-1] = '\0' [L560] 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: [L549] int length1 = __VERIFIER_nondet_int(); [L550] int length2 = __VERIFIER_nondet_int(); [L551] COND TRUE length1 < 1 [L552] length1 = 1 [L554] COND TRUE length2 < 1 [L555] length2 = 1 [L557] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L557] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L558] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L558] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L559] FCALL nondetString1[length1-1] = '\0' [L560] FCALL nondetString2[length2-1] = '\0' [L561] CALL cstrcmp(nondetString1,nondetString2) [L543] FCALL \read(*s1) - 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] int length2 = __VERIFIER_nondet_int(); [L551] COND TRUE length1 < 1 [L552] length1 = 1 [L554] COND TRUE length2 < 1 [L555] length2 = 1 [L557] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L557] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L558] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L558] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L559] FCALL nondetString1[length1-1] = '\0' [L560] FCALL nondetString2[length2-1] = '\0' [L561] CALL cstrcmp(nondetString1,nondetString2) [L543] FCALL \read(*s1) [L543] s2++ - 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] int length2 = __VERIFIER_nondet_int(); [L551] COND TRUE length1 < 1 [L552] length1 = 1 [L554] COND TRUE length2 < 1 [L555] length2 = 1 [L557] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L557] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L558] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L558] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L559] FCALL nondetString1[length1-1] = '\0' [L560] FCALL nondetString2[length2-1] = '\0' [L561] CALL cstrcmp(nondetString1,nondetString2) [L543] EXPR, FCALL \read(*s1) [L543] EXPR s2++ [L543] COND FALSE !(*s1 == *s2++) [L546] FCALL \read(*s1) - 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] int length2 = __VERIFIER_nondet_int(); [L551] COND TRUE length1 < 1 [L552] length1 = 1 [L554] COND TRUE length2 < 1 [L555] length2 = 1 [L557] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L557] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L558] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L558] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L559] FCALL nondetString1[length1-1] = '\0' [L560] FCALL nondetString2[length2-1] = '\0' [L561] CALL cstrcmp(nondetString1,nondetString2) [L543] EXPR, FCALL \read(*s1) [L543] EXPR s2++ [L543] COND TRUE *s1 == *s2++ [L544] s1++ - 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] int length2 = __VERIFIER_nondet_int(); [L551] COND TRUE length1 < 1 [L552] length1 = 1 [L554] COND TRUE length2 < 1 [L555] length2 = 1 [L557] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L557] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L558] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L558] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L559] FCALL nondetString1[length1-1] = '\0' [L560] FCALL nondetString2[length2-1] = '\0' [L561] CALL cstrcmp(nondetString1,nondetString2) [L543] EXPR, FCALL \read(*s1) [L543] EXPR s2++ [L543] COND FALSE !(*s1 == *s2++) [L546] FCALL \read(*s1) [L546] --s2 - 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] int length2 = __VERIFIER_nondet_int(); [L551] COND TRUE length1 < 1 [L552] length1 = 1 [L554] COND TRUE length2 < 1 [L555] length2 = 1 [L557] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L557] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L558] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L558] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L559] FCALL nondetString1[length1-1] = '\0' [L560] FCALL nondetString2[length2-1] = '\0' [L561] CALL, EXPR cstrcmp(nondetString1,nondetString2) [L543] EXPR, FCALL \read(*s1) [L543] EXPR s2++ [L543] COND TRUE *s1 == *s2++ [L544] EXPR s1++ [L544] COND TRUE *s1++ == 0 [L545] RET return (0); [L561] EXPR cstrcmp(nondetString1,nondetString2) [L561] return cstrcmp(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 - 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/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_14-01-46-300.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_14-01-46-300.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_14-01-46-300.csv Received shutdown request...