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_cstrncat-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:22:27,515 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:22:27,518 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:22:27,534 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:22:27,535 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:22:27,536 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:22:27,537 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:22:27,539 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:22:27,541 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:22:27,542 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:22:27,543 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:22:27,543 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:22:27,544 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:22:27,545 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:22:27,546 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:22:27,549 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:22:27,551 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:22:27,553 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:22:27,555 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:22:27,556 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:22:27,559 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:22:27,564 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:22:27,564 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:22:27,565 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 16:22:27,575 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:22:27,575 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:22:27,576 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:22:27,576 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:22:27,576 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:22:27,577 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:22:27,577 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:22:27,577 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:22:27,578 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:22:27,578 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:22:27,578 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:22:27,578 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:22:27,578 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:22:27,579 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:22:27,579 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:22:27,579 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:22:27,579 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:22:27,579 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:22:27,580 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:22:27,580 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:22:27,580 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:22:27,580 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:22:27,581 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:22:27,581 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:22:27,581 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:22:27,581 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:22:27,581 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:22:27,582 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:22:27,582 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:22:27,582 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:22:27,582 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:22:27,582 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:22:27,583 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:22:27,583 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:22:27,584 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:22:27,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:22:27,633 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:22:27,636 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:22:27,638 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:22:27,638 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:22:27,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:22:27,808 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:22:27,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:22:27,814 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:27,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:22:27,821 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:22:27,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:27" (1/1) ... [2018-01-24 16:22:27,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce9123b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:27, skipping insertion in model container [2018-01-24 16:22:27,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:27" (1/1) ... [2018-01-24 16:22:27,839 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:27,876 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:27,998 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:28,016 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:28,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:28 WrapperNode [2018-01-24 16:22:28,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:28,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:22:28,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:22:28,026 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:22:28,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:28" (1/1) ... [2018-01-24 16:22:28,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:28" (1/1) ... [2018-01-24 16:22:28,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:28" (1/1) ... [2018-01-24 16:22:28,055 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:28" (1/1) ... [2018-01-24 16:22:28,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:28" (1/1) ... [2018-01-24 16:22:28,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:28" (1/1) ... [2018-01-24 16:22:28,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:28" (1/1) ... [2018-01-24 16:22:28,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:22:28,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:22:28,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:22:28,071 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:22:28,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:28" (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 16:22:28,125 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:22:28,125 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:22:28,125 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-01-24 16:22:28,125 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:22:28,125 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:22:28,125 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:22:28,125 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:22:28,126 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:22:28,126 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:22:28,126 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:22:28,126 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-01-24 16:22:28,126 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:22:28,126 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:22:28,126 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:22:28,372 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:22:28,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:28 BoogieIcfgContainer [2018-01-24 16:22:28,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:22:28,373 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:22:28,373 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:22:28,373 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:22:28,374 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:28" (1/1) ... [2018-01-24 16:22:28,426 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:22:31,632 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:22:31,656 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:22:31,660 INFO L268 AbstractInterpreter]: Visited 63 different actions 739 times. Merged at 43 different actions 363 times. Never widened. Found 101 fixpoints after 14 different actions. Largest state had 35 variables. [2018-01-24 16:22:31,662 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:22:31,663 INFO L168 Benchmark]: Toolchain (without parser) took 3855.07 ms. Allocated memory was 308.8 MB in the beginning and 574.6 MB in the end (delta: 265.8 MB). Free memory was 268.8 MB in the beginning and 332.8 MB in the end (delta: -64.0 MB). Peak memory consumption was 201.8 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:31,664 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 308.8 MB. Free memory is still 274.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:22:31,664 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.02 ms. Allocated memory is still 308.8 MB. Free memory was 267.8 MB in the beginning and 257.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:31,665 INFO L168 Benchmark]: Boogie Preprocessor took 44.12 ms. Allocated memory is still 308.8 MB. Free memory was 257.7 MB in the beginning and 255.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:31,665 INFO L168 Benchmark]: RCFGBuilder took 302.30 ms. Allocated memory is still 308.8 MB. Free memory was 255.7 MB in the beginning and 235.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:31,666 INFO L168 Benchmark]: Abstract Interpretation took 3289.28 ms. Allocated memory was 308.8 MB in the beginning and 574.6 MB in the end (delta: 265.8 MB). Free memory was 235.7 MB in the beginning and 332.8 MB in the end (delta: -97.1 MB). Peak memory consumption was 168.8 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:31,667 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 308.8 MB. Free memory is still 274.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 211.02 ms. Allocated memory is still 308.8 MB. Free memory was 267.8 MB in the beginning and 257.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 44.12 ms. Allocated memory is still 308.8 MB. Free memory was 257.7 MB in the beginning and 255.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 302.30 ms. Allocated memory is still 308.8 MB. Free memory was 255.7 MB in the beginning and 235.7 MB in the end (delta: 20.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 3289.28 ms. Allocated memory was 308.8 MB in the beginning and 574.6 MB in the end (delta: 265.8 MB). Free memory was 235.7 MB in the beginning and 332.8 MB in the end (delta: -97.1 MB). Peak memory consumption was 168.8 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 : 538 LocStat_NO_SUPPORTING_DISEQUALITIES : 106 LocStat_NO_DISJUNCTIONS : -96 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 69 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 102 TransStat_NO_SUPPORTING_DISEQUALITIES : 15 TransStat_NO_DISJUNCTIONS : 73 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.143386 RENAME_VARIABLES(MILLISECONDS) : 0.072922 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.130222 PROJECTAWAY(MILLISECONDS) : 0.062933 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001054 DISJOIN(MILLISECONDS) : 0.144809 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.085481 ADD_EQUALITY(MILLISECONDS) : 0.029481 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.015555 #CONJOIN_DISJUNCTIVE : 1218 #RENAME_VARIABLES : 2770 #UNFREEZE : 0 #CONJOIN : 1753 #PROJECTAWAY : 1586 #ADD_WEAK_EQUALITY : 15 #DISJOIN : 348 #RENAME_VARIABLES_DISJUNCTIVE : 2680 #ADD_EQUALITY : 106 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 13 - 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: [L558] int length1 = __VERIFIER_nondet_int(); [L559] int length2 = __VERIFIER_nondet_int(); [L560] int n = __VERIFIER_nondet_int(); [L561] COND TRUE length1 < 1 [L562] length1 = 1 [L564] COND FALSE !(length2 < 1) [L567] COND TRUE n < 1 [L568] n = 1 [L570] COND FALSE !(length1 < n || length1 - n < length2) [L571] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L571] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L572] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L572] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L573] FCALL nondetString1[length1-n-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: [L558] int length1 = __VERIFIER_nondet_int(); [L559] int length2 = __VERIFIER_nondet_int(); [L560] int n = __VERIFIER_nondet_int(); [L561] COND TRUE length1 < 1 [L562] length1 = 1 [L564] COND FALSE !(length2 < 1) [L567] COND TRUE n < 1 [L568] n = 1 [L570] COND FALSE !(length1 < n || length1 - n < length2) [L571] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L571] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L572] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L572] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L573] FCALL nondetString1[length1-n-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: [L558] int length1 = __VERIFIER_nondet_int(); [L559] int length2 = __VERIFIER_nondet_int(); [L560] int n = __VERIFIER_nondet_int(); [L561] COND TRUE length1 < 1 [L562] length1 = 1 [L564] COND FALSE !(length2 < 1) [L567] COND TRUE n < 1 [L568] n = 1 [L570] COND FALSE !(length1 < n || length1 - n < length2) [L571] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L571] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L572] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L572] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L573] FCALL nondetString1[length1-n-1] = '\0' [L574] 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: [L558] int length1 = __VERIFIER_nondet_int(); [L559] int length2 = __VERIFIER_nondet_int(); [L560] int n = __VERIFIER_nondet_int(); [L561] COND TRUE length1 < 1 [L562] length1 = 1 [L564] COND FALSE !(length2 < 1) [L567] COND TRUE n < 1 [L568] n = 1 [L570] COND FALSE !(length1 < n || length1 - n < length2) [L571] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L571] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L572] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L572] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L573] FCALL nondetString1[length1-n-1] = '\0' [L574] FCALL nondetString2[length2-1] = '\0' [L575] CALL cstrncat(nondetString1, nondetString2, n) [L543] COND TRUE n != 0 [L544] char *d = dst; [L545] const char *s = src; [L546] FCALL \read(*d) - 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: [L558] int length1 = __VERIFIER_nondet_int(); [L559] int length2 = __VERIFIER_nondet_int(); [L560] int n = __VERIFIER_nondet_int(); [L561] COND TRUE length1 < 1 [L562] length1 = 1 [L564] COND FALSE !(length2 < 1) [L567] COND TRUE n < 1 [L568] n = 1 [L570] COND FALSE !(length1 < n || length1 - n < length2) [L571] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L571] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L572] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L572] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L573] FCALL nondetString1[length1-n-1] = '\0' [L574] FCALL nondetString2[length2-1] = '\0' [L575] CALL cstrncat(nondetString1, nondetString2, n) [L543] COND TRUE n != 0 [L544] char *d = dst; [L545] const char *s = src; [L546] EXPR, FCALL \read(*d) [L546] COND FALSE !(*d != 0) [L549] s++ - 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: [L558] int length1 = __VERIFIER_nondet_int(); [L559] int length2 = __VERIFIER_nondet_int(); [L560] int n = __VERIFIER_nondet_int(); [L561] COND TRUE length1 < 1 [L562] length1 = 1 [L564] COND FALSE !(length2 < 1) [L567] COND TRUE n < 1 [L568] n = 1 [L570] COND FALSE !(length1 < n || length1 - n < length2) [L571] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L571] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L572] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L572] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L573] FCALL nondetString1[length1-n-1] = '\0' [L574] FCALL nondetString2[length2-1] = '\0' [L575] CALL cstrncat(nondetString1, nondetString2, n) [L543] COND TRUE n != 0 [L544] char *d = dst; [L545] const char *s = src; [L546] EXPR, FCALL \read(*d) [L546] COND FALSE !(*d != 0) [L549] EXPR s++ [L549] FCALL *d = *s++ - 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: [L558] int length1 = __VERIFIER_nondet_int(); [L559] int length2 = __VERIFIER_nondet_int(); [L560] int n = __VERIFIER_nondet_int(); [L561] COND TRUE length1 < 1 [L562] length1 = 1 [L564] COND FALSE !(length2 < 1) [L567] COND TRUE n < 1 [L568] n = 1 [L570] COND FALSE !(length1 < n || length1 - n < length2) [L571] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L571] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L572] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L572] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L573] FCALL nondetString1[length1-n-1] = '\0' [L574] FCALL nondetString2[length2-1] = '\0' [L575] CALL cstrncat(nondetString1, nondetString2, n) [L543] COND TRUE n != 0 [L544] char *d = dst; [L545] const char *s = src; [L546] EXPR, FCALL \read(*d) [L546] COND FALSE !(*d != 0) [L549] EXPR s++ [L549] EXPR, FCALL *d = *s++ [L549] COND TRUE (*d = *s++) == 0 [L553] FCALL *d = 0 - UnprovableResult [Line: 557]: 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: [L558] int length1 = __VERIFIER_nondet_int(); [L559] int length2 = __VERIFIER_nondet_int(); [L560] int n = __VERIFIER_nondet_int(); [L561] COND TRUE length1 < 1 [L562] length1 = 1 [L564] COND FALSE !(length2 < 1) [L567] COND TRUE n < 1 [L568] n = 1 [L570] COND FALSE !(length1 < n || length1 - n < length2) [L571] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L571] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L572] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L572] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L573] FCALL nondetString1[length1-n-1] = '\0' [L574] FCALL nondetString2[length2-1] = '\0' [L575] CALL cstrncat(nondetString1, nondetString2, n) [L543] COND FALSE !(n != 0) [L555] RET return (dst); [L575] cstrncat(nondetString1, nondetString2, n) [L576] return 0; - 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_cstrncat-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-22-31-678.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-22-31-678.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrncat-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-22-31-678.csv Received shutdown request...