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_cstpcpy-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:22:09,822 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:22:09,824 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:22:09,839 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:22:09,839 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:22:09,840 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:22:09,842 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:22:09,844 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:22:09,846 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:22:09,847 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:22:09,848 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:22:09,848 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:22:09,849 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:22:09,851 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:22:09,852 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:22:09,854 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:22:09,857 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:22:09,859 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:22:09,861 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:22:09,862 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:22:09,865 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:22:09,869 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:22:09,870 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:22:09,870 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 16:22:09,879 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:22:09,879 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:22:09,880 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:22:09,880 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:22:09,880 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:22:09,880 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:22:09,880 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:22:09,880 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:22:09,881 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:22:09,881 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:22:09,881 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:22:09,881 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:22:09,881 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:22:09,881 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:22:09,882 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:22:09,882 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:22:09,882 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:22:09,882 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:22:09,882 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:22:09,882 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:22:09,882 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:22:09,883 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:22:09,883 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:22:09,883 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:22:09,883 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:22:09,883 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:22:09,884 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:22:09,884 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:22:09,884 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:22:09,884 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:22:09,884 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:22:09,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:22:09,884 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:22:09,885 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:22:09,885 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:22:09,918 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:22:09,929 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:22:09,932 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:22:09,933 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:22:09,934 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:22:09,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:22:10,089 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:22:10,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:22:10,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:10,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:22:10,101 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:22:10,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:10" (1/1) ... [2018-01-24 16:22:10,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e47ad9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:10, skipping insertion in model container [2018-01-24 16:22:10,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:10" (1/1) ... [2018-01-24 16:22:10,123 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:10,163 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:10,280 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:10,296 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:10,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:10 WrapperNode [2018-01-24 16:22:10,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:10,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:22:10,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:22:10,304 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:22:10,320 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:10" (1/1) ... [2018-01-24 16:22:10,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:10" (1/1) ... [2018-01-24 16:22:10,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:10" (1/1) ... [2018-01-24 16:22:10,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:10" (1/1) ... [2018-01-24 16:22:10,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:10" (1/1) ... [2018-01-24 16:22:10,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:10" (1/1) ... [2018-01-24 16:22:10,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:10" (1/1) ... [2018-01-24 16:22:10,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:22:10,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:22:10,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:22:10,341 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:22:10,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:10" (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 16:22:10,385 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:22:10,385 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:22:10,385 INFO L136 BoogieDeclarations]: Found implementation of procedure cstpcpy [2018-01-24 16:22:10,385 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:22:10,385 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:22:10,386 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:22:10,386 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:22:10,386 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:22:10,386 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:22:10,386 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:22:10,386 INFO L128 BoogieDeclarations]: Found specification of procedure cstpcpy [2018-01-24 16:22:10,387 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:22:10,387 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:22:10,387 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:22:10,577 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:22:10,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:10 BoogieIcfgContainer [2018-01-24 16:22:10,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:22:10,579 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:22:10,579 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:22:10,579 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:22:10,580 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:10" (1/1) ... [2018-01-24 16:22:10,631 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:22:11,906 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:22:11,927 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:22:11,930 INFO L268 AbstractInterpreter]: Visited 44 different actions 249 times. Merged at 29 different actions 120 times. Never widened. Found 24 fixpoints after 6 different actions. Largest state had 25 variables. [2018-01-24 16:22:11,932 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:22:11,933 INFO L168 Benchmark]: Toolchain (without parser) took 1843.84 ms. Allocated memory was 306.2 MB in the beginning and 359.1 MB in the end (delta: 53.0 MB). Free memory was 264.5 MB in the beginning and 181.0 MB in the end (delta: 83.5 MB). Peak memory consumption was 136.5 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:11,934 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 306.2 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:22:11,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 207.63 ms. Allocated memory is still 306.2 MB. Free memory was 263.5 MB in the beginning and 253.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:11,934 INFO L168 Benchmark]: Boogie Preprocessor took 37.06 ms. Allocated memory is still 306.2 MB. Free memory was 253.3 MB in the beginning and 252.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-24 16:22:11,934 INFO L168 Benchmark]: RCFGBuilder took 237.07 ms. Allocated memory is still 306.2 MB. Free memory was 252.3 MB in the beginning and 235.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:11,935 INFO L168 Benchmark]: Abstract Interpretation took 1353.81 ms. Allocated memory was 306.2 MB in the beginning and 359.1 MB in the end (delta: 53.0 MB). Free memory was 235.4 MB in the beginning and 181.0 MB in the end (delta: 54.4 MB). Peak memory consumption was 107.3 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:11,937 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 306.2 MB. Free memory is still 270.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 207.63 ms. Allocated memory is still 306.2 MB. Free memory was 263.5 MB in the beginning and 253.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.06 ms. Allocated memory is still 306.2 MB. Free memory was 253.3 MB in the beginning and 252.3 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 237.07 ms. Allocated memory is still 306.2 MB. Free memory was 252.3 MB in the beginning and 235.4 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 1353.81 ms. Allocated memory was 306.2 MB in the beginning and 359.1 MB in the end (delta: 53.0 MB). Free memory was 235.4 MB in the beginning and 181.0 MB in the end (delta: 54.4 MB). Peak memory consumption was 107.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 37 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 316 LocStat_NO_SUPPORTING_DISEQUALITIES : 71 LocStat_NO_DISJUNCTIONS : -74 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 50 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 71 TransStat_NO_SUPPORTING_DISEQUALITIES : 9 TransStat_NO_DISJUNCTIONS : 52 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.031140 RENAME_VARIABLES(MILLISECONDS) : 0.256656 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.001527 PROJECTAWAY(MILLISECONDS) : 0.336598 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002532 DISJOIN(MILLISECONDS) : 0.393216 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.289174 ADD_EQUALITY(MILLISECONDS) : 0.048512 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.019919 #CONJOIN_DISJUNCTIVE : 411 #RENAME_VARIABLES : 906 #UNFREEZE : 0 #CONJOIN : 594 #PROJECTAWAY : 546 #ADD_WEAK_EQUALITY : 11 #DISJOIN : 119 #RENAME_VARIABLES_DISJUNCTIVE : 880 #ADD_EQUALITY : 73 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - 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: [L546] int length1 = __VERIFIER_nondet_int(); [L547] int length2 = __VERIFIER_nondet_int(); [L548] COND TRUE length1 < 1 [L549] length1 = 1 [L551] COND FALSE !(length2 < 1) [L554] COND FALSE !(length1 < length2) [L555] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L555] char* nondetArea = (char*) __builtin_alloca (length1 * sizeof(char)); [L556] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L556] char* nondetString = (char*) __builtin_alloca (length2 * sizeof(char)); [L557] FCALL nondetString[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: [L546] int length1 = __VERIFIER_nondet_int(); [L547] int length2 = __VERIFIER_nondet_int(); [L548] COND TRUE length1 < 1 [L549] length1 = 1 [L551] COND FALSE !(length2 < 1) [L554] COND FALSE !(length1 < length2) [L555] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L555] char* nondetArea = (char*) __builtin_alloca (length1 * sizeof(char)); [L556] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L556] char* nondetString = (char*) __builtin_alloca (length2 * sizeof(char)); [L557] FCALL nondetString[length2-1] = '\0' [L558] CALL cstpcpy(nondetArea,nondetString) [L542] FCALL \read(*from) - 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: [L546] int length1 = __VERIFIER_nondet_int(); [L547] int length2 = __VERIFIER_nondet_int(); [L548] COND TRUE length1 < 1 [L549] length1 = 1 [L551] COND FALSE !(length2 < 1) [L554] COND FALSE !(length1 < length2) [L555] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L555] char* nondetArea = (char*) __builtin_alloca (length1 * sizeof(char)); [L556] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L556] char* nondetString = (char*) __builtin_alloca (length2 * sizeof(char)); [L557] FCALL nondetString[length2-1] = '\0' [L558] CALL cstpcpy(nondetArea,nondetString) [L542] EXPR, FCALL \read(*from) [L542] FCALL *to = *from - 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: [L546] int length1 = __VERIFIER_nondet_int(); [L547] int length2 = __VERIFIER_nondet_int(); [L548] COND TRUE length1 < 1 [L549] length1 = 1 [L551] COND FALSE !(length2 < 1) [L554] COND FALSE !(length1 < length2) [L555] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L555] char* nondetArea = (char*) __builtin_alloca (length1 * sizeof(char)); [L556] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L556] char* nondetString = (char*) __builtin_alloca (length2 * sizeof(char)); [L557] FCALL nondetString[length2-1] = '\0' [L558] CALL cstpcpy(nondetArea,nondetString) [L542] EXPR, FCALL \read(*from) [L542] FCALL *to = *from - UnprovableResult [Line: 545]: 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: [L546] int length1 = __VERIFIER_nondet_int(); [L547] int length2 = __VERIFIER_nondet_int(); [L548] COND TRUE length1 < 1 [L549] length1 = 1 [L551] COND FALSE !(length2 < 1) [L554] COND FALSE !(length1 < length2) [L555] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L555] char* nondetArea = (char*) __builtin_alloca (length1 * sizeof(char)); [L556] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L556] char* nondetString = (char*) __builtin_alloca (length2 * sizeof(char)); [L557] FCALL nondetString[length2-1] = '\0' [L558] CALL cstpcpy(nondetArea,nondetString) [L542] EXPR, FCALL \read(*from) [L542] EXPR, FCALL *to = *from [L542] COND FALSE !((*to = *from) != '\0') [L543] RET return(to); [L558] cstpcpy(nondetArea,nondetString) [L559] 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 * 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_cstpcpy-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-22-11-948.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-22-11-948.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstpcpy-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-22-11-948.csv Received shutdown request...