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/cstrncat-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:21:37,066 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:21:37,068 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:21:37,084 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:21:37,084 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:21:37,086 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:21:37,087 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:21:37,089 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:21:37,091 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:21:37,092 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:21:37,093 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:21:37,093 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:21:37,094 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:21:37,096 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:21:37,097 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:21:37,099 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:21:37,101 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:21:37,103 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:21:37,105 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:21:37,106 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:21:37,109 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:21:37,115 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:21:37,116 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:21:37,116 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 16:21:37,124 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:21:37,125 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:21:37,125 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:21:37,126 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:21:37,126 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:21:37,126 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:21:37,126 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:21:37,126 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:21:37,126 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:21:37,127 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:21:37,127 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:21:37,127 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:21:37,127 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:21:37,127 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:21:37,127 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:21:37,127 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:21:37,127 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:21:37,128 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:21:37,128 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:21:37,128 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:21:37,128 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:21:37,128 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:21:37,128 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:21:37,129 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:21:37,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:21:37,129 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:21:37,129 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:21:37,129 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:21:37,129 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:21:37,130 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:21:37,130 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:21:37,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:21:37,130 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:21:37,131 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:21:37,131 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:21:37,163 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:21:37,173 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:21:37,176 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:21:37,177 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:21:37,178 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:21:37,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncat-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:21:37,338 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:21:37,343 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:21:37,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:21:37,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:21:37,349 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:21:37,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:21:37" (1/1) ... [2018-01-24 16:21:37,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdf0e68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:37, skipping insertion in model container [2018-01-24 16:21:37,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:21:37" (1/1) ... [2018-01-24 16:21:37,367 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:21:37,403 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:21:37,527 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:21:37,544 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:21:37,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:37 WrapperNode [2018-01-24 16:21:37,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:21:37,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:21:37,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:21:37,553 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:21:37,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:37" (1/1) ... [2018-01-24 16:21:37,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:37" (1/1) ... [2018-01-24 16:21:37,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:37" (1/1) ... [2018-01-24 16:21:37,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:37" (1/1) ... [2018-01-24 16:21:37,586 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:37" (1/1) ... [2018-01-24 16:21:37,589 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:37" (1/1) ... [2018-01-24 16:21:37,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:37" (1/1) ... [2018-01-24 16:21:37,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:21:37,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:21:37,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:21:37,593 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:21:37,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:37" (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 16:21:37,649 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:21:37,649 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:21:37,649 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-01-24 16:21:37,649 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:21:37,649 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:21:37,649 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:21:37,649 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:21:37,649 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:21:37,650 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:21:37,650 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:21:37,650 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncat [2018-01-24 16:21:37,650 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:21:37,650 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:21:37,650 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:21:37,901 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:21:37,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:21:37 BoogieIcfgContainer [2018-01-24 16:21:37,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:21:37,902 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:21:37,902 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:21:37,903 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:21:37,904 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:21:37" (1/1) ... [2018-01-24 16:21:37,946 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:21:41,092 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:21:41,116 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:21:41,121 INFO L268 AbstractInterpreter]: Visited 67 different actions 878 times. Merged at 48 different actions 452 times. Widened at 1 different actions 3 times. Found 96 fixpoints after 17 different actions. Largest state had 35 variables. [2018-01-24 16:21:41,124 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:21:41,125 INFO L168 Benchmark]: Toolchain (without parser) took 3786.92 ms. Allocated memory was 301.5 MB in the beginning and 599.8 MB in the end (delta: 298.3 MB). Free memory was 260.4 MB in the beginning and 482.1 MB in the end (delta: -221.7 MB). Peak memory consumption was 76.6 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:41,126 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 301.5 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:21:41,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.80 ms. Allocated memory is still 301.5 MB. Free memory was 260.4 MB in the beginning and 250.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:41,127 INFO L168 Benchmark]: Boogie Preprocessor took 39.54 ms. Allocated memory is still 301.5 MB. Free memory was 250.4 MB in the beginning and 248.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:41,127 INFO L168 Benchmark]: RCFGBuilder took 309.34 ms. Allocated memory is still 301.5 MB. Free memory was 248.4 MB in the beginning and 227.5 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:41,127 INFO L168 Benchmark]: Abstract Interpretation took 3221.73 ms. Allocated memory was 301.5 MB in the beginning and 599.8 MB in the end (delta: 298.3 MB). Free memory was 227.5 MB in the beginning and 482.1 MB in the end (delta: -254.6 MB). Peak memory consumption was 43.7 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:41,129 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 301.5 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 208.80 ms. Allocated memory is still 301.5 MB. Free memory was 260.4 MB in the beginning and 250.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 39.54 ms. Allocated memory is still 301.5 MB. Free memory was 250.4 MB in the beginning and 248.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 309.34 ms. Allocated memory is still 301.5 MB. Free memory was 248.4 MB in the beginning and 227.5 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 3221.73 ms. Allocated memory was 301.5 MB in the beginning and 599.8 MB in the end (delta: 298.3 MB). Free memory was 227.5 MB in the beginning and 482.1 MB in the end (delta: -254.6 MB). Peak memory consumption was 43.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 51 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 563 LocStat_NO_SUPPORTING_DISEQUALITIES : 113 LocStat_NO_DISJUNCTIONS : -102 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 73 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 111 TransStat_NO_SUPPORTING_DISEQUALITIES : 16 TransStat_NO_DISJUNCTIONS : 80 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.193705 RENAME_VARIABLES(MILLISECONDS) : 0.008536 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.079720 PROJECTAWAY(MILLISECONDS) : 0.367363 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.003418 DISJOIN(MILLISECONDS) : 0.343648 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.017696 ADD_EQUALITY(MILLISECONDS) : 0.096588 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.023328 #CONJOIN_DISJUNCTIVE : 1320 #RENAME_VARIABLES : 2966 #UNFREEZE : 0 #CONJOIN : 1835 #PROJECTAWAY : 1606 #ADD_WEAK_EQUALITY : 15 #DISJOIN : 381 #RENAME_VARIABLES_DISJUNCTIVE : 2815 #ADD_EQUALITY : 115 #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] int n = __VERIFIER_nondet_int(); [L557] COND TRUE length1 < 1 [L558] length1 = 1 [L560] COND FALSE !(length2 < 1) [L563] COND TRUE n < 1 [L564] n = 1 [L566] COND FALSE !(length1 < n || length1 - n < length2) [L567] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L567] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L568] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L568] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L569] 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] int n = __VERIFIER_nondet_int(); [L557] COND TRUE length1 < 1 [L558] length1 = 1 [L560] COND FALSE !(length2 < 1) [L563] COND TRUE n < 1 [L564] n = 1 [L566] COND FALSE !(length1 < n || length1 - n < length2) [L567] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L567] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L568] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L568] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L569] 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] int n = __VERIFIER_nondet_int(); [L557] COND TRUE length1 < 1 [L558] length1 = 1 [L560] COND FALSE !(length2 < 1) [L563] COND TRUE n < 1 [L564] n = 1 [L566] COND FALSE !(length1 < n || length1 - n < length2) [L567] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L567] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L568] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L568] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L569] FCALL nondetString1[length1-n-1] = '\0' [L570] 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] int n = __VERIFIER_nondet_int(); [L557] COND TRUE length1 < 1 [L558] length1 = 1 [L560] COND FALSE !(length2 < 1) [L563] COND TRUE n < 1 [L564] n = 1 [L566] COND FALSE !(length1 < n || length1 - n < length2) [L567] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L567] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L568] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L568] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L569] FCALL nondetString1[length1-n-1] = '\0' [L570] FCALL nondetString2[length2-1] = '\0' [L571] CALL cstrncat(nondetString1, nondetString2, n) [L542] char *s = s1; [L543] FCALL \read(*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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] int n = __VERIFIER_nondet_int(); [L557] COND TRUE length1 < 1 [L558] length1 = 1 [L560] COND FALSE !(length2 < 1) [L563] COND TRUE n < 1 [L564] n = 1 [L566] COND FALSE !(length1 < n || length1 - n < length2) [L567] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L567] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L568] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L568] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L569] FCALL nondetString1[length1-n-1] = '\0' [L570] FCALL nondetString2[length2-1] = '\0' [L571] CALL cstrncat(nondetString1, nondetString2, n) [L542] char *s = s1; [L543] EXPR, FCALL \read(*s) [L543] COND FALSE !(*s != '\0') [L545] n != 0 && (*s = *s2++) != '\0' [L545] 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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] int n = __VERIFIER_nondet_int(); [L557] COND TRUE length1 < 1 [L558] length1 = 1 [L560] COND FALSE !(length2 < 1) [L563] COND TRUE n < 1 [L564] n = 1 [L566] COND FALSE !(length1 < n || length1 - n < length2) [L567] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L567] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L568] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L568] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L569] FCALL nondetString1[length1-n-1] = '\0' [L570] FCALL nondetString2[length2-1] = '\0' [L571] CALL cstrncat(nondetString1, nondetString2, n) [L542] char *s = s1; [L543] EXPR, FCALL \read(*s) [L543] COND FALSE !(*s != '\0') [L545] n != 0 && (*s = *s2++) != '\0' [L545] EXPR s2++ [L545] FCALL *s = *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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] int n = __VERIFIER_nondet_int(); [L557] COND TRUE length1 < 1 [L558] length1 = 1 [L560] COND FALSE !(length2 < 1) [L563] COND FALSE !(n < 1) [L566] COND FALSE !(length1 < n || length1 - n < length2) [L567] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L567] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L568] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L568] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L569] FCALL nondetString1[length1-n-1] = '\0' [L570] FCALL nondetString2[length2-1] = '\0' [L571] CALL cstrncat(nondetString1, nondetString2, n) [L542] char *s = s1; [L543] EXPR, FCALL \read(*s) [L543] COND FALSE !(*s != '\0') [L545] n != 0 && (*s = *s2++) != '\0' [L545] COND FALSE !(n != 0 && (*s = *s2++) != '\0') [L549] FCALL \read(*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: [L554] int length1 = __VERIFIER_nondet_int(); [L555] int length2 = __VERIFIER_nondet_int(); [L556] int n = __VERIFIER_nondet_int(); [L557] COND TRUE length1 < 1 [L558] length1 = 1 [L560] COND FALSE !(length2 < 1) [L563] COND FALSE !(n < 1) [L566] COND FALSE !(length1 < n || length1 - n < length2) [L567] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L567] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L568] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L568] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L569] FCALL nondetString1[length1-n-1] = '\0' [L570] FCALL nondetString2[length2-1] = '\0' [L571] CALL cstrncat(nondetString1, nondetString2, n) [L542] char *s = s1; [L543] EXPR, FCALL \read(*s) [L543] COND TRUE *s != '\0' [L544] s++ [L543] EXPR, FCALL \read(*s) [L543] COND FALSE !(*s != '\0') [L545] n != 0 && (*s = *s2++) != '\0' [L545] COND FALSE !(n != 0 && (*s = *s2++) != '\0') [L549] EXPR, FCALL \read(*s) [L549] COND TRUE *s != '\0' [L550] FCALL *s = '\0' - 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] int n = __VERIFIER_nondet_int(); [L557] COND TRUE length1 < 1 [L558] length1 = 1 [L560] COND FALSE !(length2 < 1) [L563] COND FALSE !(n < 1) [L566] COND FALSE !(length1 < n || length1 - n < length2) [L567] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L567] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L568] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L568] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L569] FCALL nondetString1[length1-n-1] = '\0' [L570] FCALL nondetString2[length2-1] = '\0' [L571] CALL cstrncat(nondetString1, nondetString2, n) [L542] char *s = s1; [L543] EXPR, FCALL \read(*s) [L543] COND FALSE !(*s != '\0') [L545] n != 0 && (*s = *s2++) != '\0' [L545] COND FALSE !(n != 0 && (*s = *s2++) != '\0') [L549] EXPR, FCALL \read(*s) [L549] COND FALSE !(*s != '\0') [L551] RET return s1; [L571] cstrncat(nondetString1, nondetString2, n) [L572] 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 - 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/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_16-21-41-139.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/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_16-21-41-139.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/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_16-21-41-139.csv Received shutdown request...