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/subseq-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:22:54,730 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:22:54,731 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:22:54,744 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:22:54,744 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:22:54,745 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:22:54,746 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:22:54,747 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:22:54,750 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:22:54,750 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:22:54,751 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:22:54,751 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:22:54,752 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:22:54,753 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:22:54,753 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:22:54,755 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:22:54,757 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:22:54,759 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:22:54,760 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:22:54,762 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:22:54,764 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:22:54,769 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:22:54,770 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:22:54,770 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 16:22:54,780 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:22:54,780 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:22:54,781 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:22:54,781 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:22:54,781 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:22:54,782 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:22:54,782 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:22:54,782 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:22:54,783 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:22:54,783 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:22:54,783 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:22:54,783 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:22:54,783 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:22:54,784 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:22:54,784 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:22:54,784 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:22:54,784 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:22:54,784 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:22:54,784 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:22:54,785 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:22:54,785 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:22:54,785 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:22:54,785 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:22:54,785 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:22:54,786 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:22:54,786 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:22:54,786 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:22:54,786 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:22:54,786 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:22:54,787 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:22:54,787 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:22:54,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:22:54,787 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:22:54,788 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:22:54,788 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:22:54,822 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:22:54,836 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:22:54,840 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:22:54,841 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:22:54,842 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:22:54,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/subseq-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:22:55,023 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:22:55,029 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:22:55,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:55,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:22:55,037 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:22:55,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:55" (1/1) ... [2018-01-24 16:22:55,042 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 04:22:55, skipping insertion in model container [2018-01-24 16:22:55,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:55" (1/1) ... [2018-01-24 16:22:55,060 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:55,099 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:55,219 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:55,242 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:55,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:55 WrapperNode [2018-01-24 16:22:55,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:55,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:22:55,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:22:55,250 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:22:55,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:55" (1/1) ... [2018-01-24 16:22:55,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:55" (1/1) ... [2018-01-24 16:22:55,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:55" (1/1) ... [2018-01-24 16:22:55,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:55" (1/1) ... [2018-01-24 16:22:55,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:55" (1/1) ... [2018-01-24 16:22:55,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:55" (1/1) ... [2018-01-24 16:22:55,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:55" (1/1) ... [2018-01-24 16:22:55,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:22:55,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:22:55,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:22:55,279 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:22:55,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:55" (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 16:22:55,329 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:22:55,329 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:22:55,329 INFO L136 BoogieDeclarations]: Found implementation of procedure subseq [2018-01-24 16:22:55,330 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:22:55,330 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:22:55,330 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:22:55,330 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:22:55,330 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:22:55,330 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:22:55,331 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:22:55,331 INFO L128 BoogieDeclarations]: Found specification of procedure subseq [2018-01-24 16:22:55,331 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:22:55,331 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:22:55,331 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:22:55,538 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:22:55,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:55 BoogieIcfgContainer [2018-01-24 16:22:55,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:22:55,540 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:22:55,540 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:22:55,540 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:22:55,541 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:55" (1/1) ... [2018-01-24 16:22:55,591 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:22:58,060 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:22:58,088 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:22:58,092 INFO L268 AbstractInterpreter]: Visited 61 different actions 601 times. Merged at 45 different actions 356 times. Never widened. Found 56 fixpoints after 11 different actions. Largest state had 33 variables. [2018-01-24 16:22:58,095 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:22:58,096 INFO L168 Benchmark]: Toolchain (without parser) took 3072.40 ms. Allocated memory was 305.7 MB in the beginning and 480.2 MB in the end (delta: 174.6 MB). Free memory was 265.7 MB in the beginning and 342.9 MB in the end (delta: -77.2 MB). Peak memory consumption was 97.4 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:58,097 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 305.7 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:22:58,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.36 ms. Allocated memory is still 305.7 MB. Free memory was 264.7 MB in the beginning and 254.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:58,097 INFO L168 Benchmark]: Boogie Preprocessor took 29.18 ms. Allocated memory is still 305.7 MB. Free memory was 254.7 MB in the beginning and 252.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:58,098 INFO L168 Benchmark]: RCFGBuilder took 259.94 ms. Allocated memory is still 305.7 MB. Free memory was 252.7 MB in the beginning and 234.1 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:58,098 INFO L168 Benchmark]: Abstract Interpretation took 2555.35 ms. Allocated memory was 305.7 MB in the beginning and 480.2 MB in the end (delta: 174.6 MB). Free memory was 234.1 MB in the beginning and 342.9 MB in the end (delta: -108.8 MB). Peak memory consumption was 65.8 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:58,100 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 305.7 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 219.36 ms. Allocated memory is still 305.7 MB. Free memory was 264.7 MB in the beginning and 254.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.18 ms. Allocated memory is still 305.7 MB. Free memory was 254.7 MB in the beginning and 252.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 259.94 ms. Allocated memory is still 305.7 MB. Free memory was 252.7 MB in the beginning and 234.1 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 2555.35 ms. Allocated memory was 305.7 MB in the beginning and 480.2 MB in the end (delta: 174.6 MB). Free memory was 234.1 MB in the beginning and 342.9 MB in the end (delta: -108.8 MB). Peak memory consumption was 65.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 48 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 609 LocStat_NO_SUPPORTING_DISEQUALITIES : 119 LocStat_NO_DISJUNCTIONS : -96 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 67 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 97 TransStat_NO_SUPPORTING_DISEQUALITIES : 16 TransStat_NO_DISJUNCTIONS : 75 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.386646 RENAME_VARIABLES(MILLISECONDS) : 0.018089 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.194212 PROJECTAWAY(MILLISECONDS) : 0.665192 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002132 DISJOIN(MILLISECONDS) : 0.353249 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.040554 ADD_EQUALITY(MILLISECONDS) : 0.035310 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.011027 #CONJOIN_DISJUNCTIVE : 974 #RENAME_VARIABLES : 2295 #UNFREEZE : 0 #CONJOIN : 1521 #PROJECTAWAY : 1411 #ADD_WEAK_EQUALITY : 11 #DISJOIN : 273 #RENAME_VARIABLES_DISJUNCTIVE : 2201 #ADD_EQUALITY : 99 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 14 - 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] COND TRUE length1 < 1 [L557] length1 = 1 [L559] COND FALSE !(length2 < 1) [L562] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L562] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L563] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L563] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L564] 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] COND TRUE length1 < 1 [L557] length1 = 1 [L559] COND FALSE !(length2 < 1) [L562] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L562] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L563] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L563] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L564] 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] COND TRUE length1 < 1 [L557] length1 = 1 [L559] COND FALSE !(length2 < 1) [L562] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L562] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L563] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L563] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L564] FCALL nondetString1[length1-1] = '\0' [L565] 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] COND TRUE length1 < 1 [L557] length1 = 1 [L559] COND FALSE !(length2 < 1) [L562] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L562] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L563] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L563] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L564] FCALL nondetString1[length1-1] = '\0' [L565] FCALL nondetString2[length2-1] = '\0' [L566] CALL subseq(nondetString1,nondetString2) [L542] char *ps = s; [L543] char *pt = t; [L544] FCALL \read(*ps) - 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] COND TRUE length1 < 1 [L557] length1 = 1 [L559] COND FALSE !(length2 < 1) [L562] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L562] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L563] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L563] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L564] FCALL nondetString1[length1-1] = '\0' [L565] FCALL nondetString2[length2-1] = '\0' [L566] CALL subseq(nondetString1,nondetString2) [L542] char *ps = s; [L543] char *pt = t; [L544] EXPR, FCALL \read(*ps) [L544] *ps != '\0' && *pt != '\0' [L544] FCALL \read(*pt) - 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] COND TRUE length1 < 1 [L557] length1 = 1 [L559] COND FALSE !(length2 < 1) [L562] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L562] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L563] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L563] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L564] FCALL nondetString1[length1-1] = '\0' [L565] FCALL nondetString2[length2-1] = '\0' [L566] CALL subseq(nondetString1,nondetString2) [L542] char *ps = s; [L543] char *pt = t; [L544] EXPR, FCALL \read(*ps) [L544] *ps != '\0' && *pt != '\0' [L544] COND FALSE !(*ps != '\0' && *pt != '\0') [L550] FCALL \read(*pt) - 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] COND TRUE length1 < 1 [L557] length1 = 1 [L559] COND FALSE !(length2 < 1) [L562] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L562] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L563] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L563] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L564] FCALL nondetString1[length1-1] = '\0' [L565] FCALL nondetString2[length2-1] = '\0' [L566] CALL subseq(nondetString1,nondetString2) [L542] char *ps = s; [L543] char *pt = t; [L544] EXPR, FCALL \read(*ps) [L544] *ps != '\0' && *pt != '\0' [L544] EXPR, FCALL \read(*pt) [L544] *ps != '\0' && *pt != '\0' [L544] COND TRUE *ps != '\0' && *pt != '\0' [L545] FCALL \read(*ps) - 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] COND TRUE length1 < 1 [L557] length1 = 1 [L559] COND FALSE !(length2 < 1) [L562] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L562] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L563] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L563] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L564] FCALL nondetString1[length1-1] = '\0' [L565] FCALL nondetString2[length2-1] = '\0' [L566] CALL subseq(nondetString1,nondetString2) [L542] char *ps = s; [L543] char *pt = t; [L544] EXPR, FCALL \read(*ps) [L544] *ps != '\0' && *pt != '\0' [L544] EXPR, FCALL \read(*pt) [L544] *ps != '\0' && *pt != '\0' [L544] COND TRUE *ps != '\0' && *pt != '\0' [L545] FCALL \read(*ps) [L545] FCALL \read(*pt) - UnprovableResult [Line: 553]: 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] COND TRUE length1 < 1 [L557] length1 = 1 [L559] COND FALSE !(length2 < 1) [L562] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L562] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L563] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L563] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L564] FCALL nondetString1[length1-1] = '\0' [L565] FCALL nondetString2[length2-1] = '\0' [L566] CALL, EXPR subseq(nondetString1,nondetString2) [L542] char *ps = s; [L543] char *pt = t; [L544] EXPR, FCALL \read(*ps) [L544] *ps != '\0' && *pt != '\0' [L544] COND FALSE !(*ps != '\0' && *pt != '\0') [L550] EXPR, FCALL \read(*pt) [L550] COND TRUE *pt == '\0' [L550] RET return 1; [L566] EXPR subseq(nondetString1,nondetString2) [L566] return subseq(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 * 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/subseq-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-22-58-111.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/subseq-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-22-58-111.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/subseq-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-22-58-111.csv Received shutdown request...