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_cstrcspn-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:22:19,356 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:22:19,358 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:22:19,372 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:22:19,373 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:22:19,374 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:22:19,375 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:22:19,376 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:22:19,378 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:22:19,379 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:22:19,380 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:22:19,380 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:22:19,381 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:22:19,383 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:22:19,384 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:22:19,386 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:22:19,388 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:22:19,390 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:22:19,391 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:22:19,392 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:22:19,394 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 16:22:19,399 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:22:19,400 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:22:19,400 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 16:22:19,409 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:22:19,410 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:22:19,410 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:22:19,410 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:22:19,411 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:22:19,411 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:22:19,411 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:22:19,411 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:22:19,412 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:22:19,412 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:22:19,412 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:22:19,412 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:22:19,413 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:22:19,413 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:22:19,413 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:22:19,413 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:22:19,413 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:22:19,413 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:22:19,414 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:22:19,414 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:22:19,414 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:22:19,414 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:22:19,414 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:22:19,414 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:22:19,415 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:22:19,415 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:22:19,415 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:22:19,415 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:22:19,415 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:22:19,416 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:22:19,416 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:22:19,416 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:22:19,416 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:22:19,417 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:22:19,417 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:22:19,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:22:19,466 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:22:19,470 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:22:19,471 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:22:19,472 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:22:19,472 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:22:19,658 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:22:19,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:22:19,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:19,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:22:19,668 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:22:19,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:19" (1/1) ... [2018-01-24 16:22:19,671 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 04:22:19, skipping insertion in model container [2018-01-24 16:22:19,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:22:19" (1/1) ... [2018-01-24 16:22:19,685 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:19,723 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:22:19,844 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:19,864 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:22:19,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:19 WrapperNode [2018-01-24 16:22:19,872 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:22:19,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:22:19,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:22:19,873 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:22:19,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:19" (1/1) ... [2018-01-24 16:22:19,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:19" (1/1) ... [2018-01-24 16:22:19,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:19" (1/1) ... [2018-01-24 16:22:19,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:19" (1/1) ... [2018-01-24 16:22:19,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:19" (1/1) ... [2018-01-24 16:22:19,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:19" (1/1) ... [2018-01-24 16:22:19,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:19" (1/1) ... [2018-01-24 16:22:19,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:22:19,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:22:19,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:22:19,909 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:22:19,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:22:19" (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 16:22:19,960 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:22:19,960 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:22:19,960 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrcspn [2018-01-24 16:22:19,960 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:22:19,961 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:22:19,961 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:22:19,961 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:22:19,961 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:22:19,961 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:22:19,961 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:22:19,961 INFO L128 BoogieDeclarations]: Found specification of procedure cstrcspn [2018-01-24 16:22:19,961 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:22:19,961 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:22:19,961 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:22:20,158 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:22:20,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:20 BoogieIcfgContainer [2018-01-24 16:22:20,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:22:20,159 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:22:20,159 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:22:20,160 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:22:20,160 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:22:20" (1/1) ... [2018-01-24 16:22:20,207 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:22:22,360 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:22:22,379 WARN L312 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2018-01-24 16:22:22,381 WARN L312 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2018-01-24 16:22:22,382 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:22:22,384 WARN L312 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2018-01-24 16:22:22,387 INFO L268 AbstractInterpreter]: Visited 51 different actions 446 times. Merged at 36 different actions 231 times. Never widened. Found 52 fixpoints after 7 different actions. Largest state had 31 variables. [2018-01-24 16:22:22,390 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:22:22,391 INFO L168 Benchmark]: Toolchain (without parser) took 2732.57 ms. Allocated memory was 305.1 MB in the beginning and 482.3 MB in the end (delta: 177.2 MB). Free memory was 265.2 MB in the beginning and 425.0 MB in the end (delta: -159.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:22,392 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 305.1 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:22:22,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.85 ms. Allocated memory is still 305.1 MB. Free memory was 264.2 MB in the beginning and 254.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:22,393 INFO L168 Benchmark]: Boogie Preprocessor took 36.44 ms. Allocated memory is still 305.1 MB. Free memory was 254.0 MB in the beginning and 252.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:22,393 INFO L168 Benchmark]: RCFGBuilder took 249.67 ms. Allocated memory is still 305.1 MB. Free memory was 252.0 MB in the beginning and 234.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. [2018-01-24 16:22:22,393 INFO L168 Benchmark]: Abstract Interpretation took 2230.54 ms. Allocated memory was 305.1 MB in the beginning and 482.3 MB in the end (delta: 177.2 MB). Free memory was 234.4 MB in the beginning and 425.0 MB in the end (delta: -190.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:22:22,395 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 305.1 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 209.85 ms. Allocated memory is still 305.1 MB. Free memory was 264.2 MB in the beginning and 254.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.44 ms. Allocated memory is still 305.1 MB. Free memory was 254.0 MB in the beginning and 252.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 249.67 ms. Allocated memory is still 305.1 MB. Free memory was 252.0 MB in the beginning and 234.4 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 2230.54 ms. Allocated memory was 305.1 MB in the beginning and 482.3 MB in the end (delta: 177.2 MB). Free memory was 234.4 MB in the beginning and 425.0 MB in the end (delta: -190.5 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 41 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 470 LocStat_NO_SUPPORTING_DISEQUALITIES : 97 LocStat_NO_DISJUNCTIONS : -82 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 57 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 80 TransStat_NO_SUPPORTING_DISEQUALITIES : 11 TransStat_NO_DISJUNCTIONS : 58 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.843591 RENAME_VARIABLES(MILLISECONDS) : 0.018737 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.419892 PROJECTAWAY(MILLISECONDS) : 1.169428 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001844 DISJOIN(MILLISECONDS) : 0.355328 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.038686 ADD_EQUALITY(MILLISECONDS) : 0.024664 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008983 #CONJOIN_DISJUNCTIVE : 726 #RENAME_VARIABLES : 1586 #UNFREEZE : 0 #CONJOIN : 998 #PROJECTAWAY : 931 #ADD_WEAK_EQUALITY : 11 #DISJOIN : 133 #RENAME_VARIABLES_DISJUNCTIVE : 1598 #ADD_EQUALITY : 82 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 9 - 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: [L555] int length1 = __VERIFIER_nondet_int(); [L556] int length2 = __VERIFIER_nondet_int(); [L557] COND FALSE !(length1 < 1) [L560] COND TRUE length2 < 1 [L561] length2 = 1 [L563] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L563] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L564] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L564] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L565] 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: [L555] int length1 = __VERIFIER_nondet_int(); [L556] int length2 = __VERIFIER_nondet_int(); [L557] COND FALSE !(length1 < 1) [L560] COND TRUE length2 < 1 [L561] length2 = 1 [L563] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L563] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L564] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L564] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L565] 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: [L555] int length1 = __VERIFIER_nondet_int(); [L556] int length2 = __VERIFIER_nondet_int(); [L557] COND FALSE !(length1 < 1) [L560] COND TRUE length2 < 1 [L561] length2 = 1 [L563] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L563] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L564] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L564] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L565] FCALL nondetString1[length1-1] = '\0' [L566] 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: [L555] int length1 = __VERIFIER_nondet_int(); [L556] int length2 = __VERIFIER_nondet_int(); [L557] COND FALSE !(length1 < 1) [L560] COND TRUE length2 < 1 [L561] length2 = 1 [L563] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L563] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L564] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L564] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L565] FCALL nondetString1[length1-1] = '\0' [L566] FCALL nondetString2[length2-1] = '\0' [L567] CALL cstrcspn(nondetString1,nondetString2) [L543] const char *p, *spanp; [L544] char c, sc; [L545] p = s1 [L546] p++ - 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: [L555] int length1 = __VERIFIER_nondet_int(); [L556] int length2 = __VERIFIER_nondet_int(); [L557] COND FALSE !(length1 < 1) [L560] COND TRUE length2 < 1 [L561] length2 = 1 [L563] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L563] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L564] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L564] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L565] FCALL nondetString1[length1-1] = '\0' [L566] FCALL nondetString2[length2-1] = '\0' [L567] CALL cstrcspn(nondetString1,nondetString2) [L543] const char *p, *spanp; [L544] char c, sc; [L545] p = s1 [L546] EXPR p++ [L546] c = *p++ [L547] spanp = s2 [L549] spanp++ - UnprovableResult [Line: 554]: 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: [L555] int length1 = __VERIFIER_nondet_int(); [L556] int length2 = __VERIFIER_nondet_int(); [L557] COND FALSE !(length1 < 1) [L560] COND TRUE length2 < 1 [L561] length2 = 1 [L563] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L563] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L564] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L564] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L565] FCALL nondetString1[length1-1] = '\0' [L566] FCALL nondetString2[length2-1] = '\0' [L567] CALL, EXPR cstrcspn(nondetString1,nondetString2) [L543] const char *p, *spanp; [L544] char c, sc; [L545] p = s1 [L546] EXPR p++ [L546] c = *p++ [L547] spanp = s2 [L549] EXPR spanp++ [L549] EXPR sc = *spanp++ [L549] COND TRUE (sc = *spanp++) == c [L550] RET return (p - 1 - s1); [L567] EXPR cstrcspn(nondetString1,nondetString2) [L567] return cstrcspn(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 * 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_cstrcspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-22-22-405.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-22-22-405.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/openbsd_cstrcspn-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-22-22-405.csv Received shutdown request...