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.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncmp-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 13:56:50,199 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 13:56:50,201 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 13:56:50,220 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 13:56:50,220 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 13:56:50,221 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 13:56:50,222 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 13:56:50,223 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 13:56:50,226 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 13:56:50,226 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 13:56:50,227 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 13:56:50,227 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 13:56:50,228 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 13:56:50,229 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 13:56:50,229 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 13:56:50,232 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 13:56:50,234 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 13:56:50,235 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 13:56:50,237 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 13:56:50,238 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 13:56:50,240 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 13:56:50,245 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 13:56:50,245 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 13:56:50,246 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.epf [2018-01-24 13:56:50,255 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 13:56:50,256 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 13:56:50,256 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 13:56:50,257 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 13:56:50,257 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 13:56:50,257 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 13:56:50,257 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 13:56:50,258 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 13:56:50,258 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 13:56:50,258 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 13:56:50,258 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 13:56:50,259 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 13:56:50,259 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 13:56:50,259 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 13:56:50,259 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 13:56:50,259 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 13:56:50,260 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 13:56:50,260 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 13:56:50,260 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 13:56:50,260 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 13:56:50,260 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 13:56:50,261 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 13:56:50,261 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 13:56:50,261 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 13:56:50,261 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 13:56:50,262 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 13:56:50,262 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 13:56:50,262 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 13:56:50,262 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 13:56:50,262 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 13:56:50,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 13:56:50,263 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 13:56:50,263 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 13:56:50,264 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 13:56:50,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 13:56:50,311 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 13:56:50,315 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 13:56:50,317 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 13:56:50,318 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 13:56:50,318 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-01-24 13:56:50,511 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 13:56:50,517 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 13:56:50,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 13:56:50,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 13:56:50,523 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 13:56:50,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 01:56:50" (1/1) ... [2018-01-24 13:56:50,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f741a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:56:50, skipping insertion in model container [2018-01-24 13:56:50,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 01:56:50" (1/1) ... [2018-01-24 13:56:50,543 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 13:56:50,584 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 13:56:50,702 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 13:56:50,718 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 13:56:50,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:56:50 WrapperNode [2018-01-24 13:56:50,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 13:56:50,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 13:56:50,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 13:56:50,726 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 13:56:50,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:56:50" (1/1) ... [2018-01-24 13:56:50,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:56:50" (1/1) ... [2018-01-24 13:56:50,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:56:50" (1/1) ... [2018-01-24 13:56:50,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:56:50" (1/1) ... [2018-01-24 13:56:50,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:56:50" (1/1) ... [2018-01-24 13:56:50,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:56:50" (1/1) ... [2018-01-24 13:56:50,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:56:50" (1/1) ... [2018-01-24 13:56:50,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 13:56:50,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 13:56:50,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 13:56:50,765 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 13:56:50,765 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 01:56:50" (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 13:56:50,811 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 13:56:50,812 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 13:56:50,812 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncmp [2018-01-24 13:56:50,812 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 13:56:50,812 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 13:56:50,812 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 13:56:50,812 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 13:56:50,812 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 13:56:50,812 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 13:56:50,812 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 13:56:50,813 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncmp [2018-01-24 13:56:50,813 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 13:56:50,813 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 13:56:50,813 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 13:56:51,048 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 13:56:51,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 01:56:51 BoogieIcfgContainer [2018-01-24 13:56:51,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 13:56:51,049 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 13:56:51,049 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 13:56:51,049 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 13:56:51,050 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 01:56:51" (1/1) ... [2018-01-24 13:56:51,095 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 13:57:15,696 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 13:57:15,716 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 13:57:15,721 INFO L268 AbstractInterpreter]: Visited 69 different actions 542 times. Merged at 50 different actions 276 times. Never widened. Found 61 fixpoints after 13 different actions. Largest state had 36 variables. [2018-01-24 13:57:15,723 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 13:57:15,724 INFO L168 Benchmark]: Toolchain (without parser) took 25212.93 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 263.1 MB in the beginning and 627.7 MB in the end (delta: -364.5 MB). Peak memory consumption was 817.2 MB. Max. memory is 5.3 GB. [2018-01-24 13:57:15,725 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 304.1 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 13:57:15,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.17 ms. Allocated memory is still 304.1 MB. Free memory was 263.1 MB in the beginning and 253.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 13:57:15,726 INFO L168 Benchmark]: Boogie Preprocessor took 38.27 ms. Allocated memory is still 304.1 MB. Free memory was 253.1 MB in the beginning and 251.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 13:57:15,726 INFO L168 Benchmark]: RCFGBuilder took 284.22 ms. Allocated memory is still 304.1 MB. Free memory was 251.1 MB in the beginning and 230.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 5.3 GB. [2018-01-24 13:57:15,726 INFO L168 Benchmark]: Abstract Interpretation took 24674.25 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 230.6 MB in the beginning and 627.7 MB in the end (delta: -397.1 MB). Peak memory consumption was 784.6 MB. Max. memory is 5.3 GB. [2018-01-24 13:57:15,728 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 304.1 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 208.17 ms. Allocated memory is still 304.1 MB. Free memory was 263.1 MB in the beginning and 253.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.27 ms. Allocated memory is still 304.1 MB. Free memory was 253.1 MB in the beginning and 251.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 284.22 ms. Allocated memory is still 304.1 MB. Free memory was 251.1 MB in the beginning and 230.6 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 24674.25 ms. Allocated memory was 304.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 230.6 MB in the beginning and 627.7 MB in the end (delta: -397.1 MB). Peak memory consumption was 784.6 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 53 LocStat_MAX_WEQGRAPH_SIZE : 5 LocStat_MAX_SIZEOF_WEQEDGELABEL : 3 LocStat_NO_SUPPORTING_EQUALITIES : 643 LocStat_NO_SUPPORTING_DISEQUALITIES : 160 LocStat_NO_DISJUNCTIONS : -106 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 75 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 115 TransStat_NO_SUPPORTING_DISEQUALITIES : 16 TransStat_NO_DISJUNCTIONS : 85 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.780676 RENAME_VARIABLES(MILLISECONDS) : 0.306732 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.755949 PROJECTAWAY(MILLISECONDS) : 0.169645 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.085551 DISJOIN(MILLISECONDS) : 0.205803 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.333135 ADD_EQUALITY(MILLISECONDS) : 0.030539 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.006836 #CONJOIN_DISJUNCTIVE : 863 #RENAME_VARIABLES : 2041 #UNFREEZE : 0 #CONJOIN : 1380 #PROJECTAWAY : 1224 #ADD_WEAK_EQUALITY : 11 #DISJOIN : 248 #RENAME_VARIABLES_DISJUNCTIVE : 1915 #ADD_EQUALITY : 114 #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: [L556] int length1 = __VERIFIER_nondet_int(); [L557] int length2 = __VERIFIER_nondet_int(); [L558] COND TRUE length1 < 1 [L559] length1 = 1 [L561] COND FALSE !(length2 < 1) [L564] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L564] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L565] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L565] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L566] 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: [L556] int length1 = __VERIFIER_nondet_int(); [L557] int length2 = __VERIFIER_nondet_int(); [L558] COND TRUE length1 < 1 [L559] length1 = 1 [L561] COND FALSE !(length2 < 1) [L564] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L564] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L565] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L565] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L566] FCALL nondetString1[length1-1] = '\0' [L567] 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: [L556] int length1 = __VERIFIER_nondet_int(); [L557] int length2 = __VERIFIER_nondet_int(); [L558] COND TRUE length1 < 1 [L559] length1 = 1 [L561] COND FALSE !(length2 < 1) [L564] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L564] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L565] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L565] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L566] FCALL nondetString1[length1-1] = '\0' [L567] FCALL nondetString2[length2-1] = '\0' [L568] CALL cstrncmp(nondetString1,nondetString2,__VERIFIER_nondet_int()) [L542] unsigned char uc1, uc2; [L543] COND FALSE !(n == 0) [L545] EXPR n-- [L545] n-- > 0 && *s1 == *s2 [L545] FCALL \read(*s1) - 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: [L556] int length1 = __VERIFIER_nondet_int(); [L557] int length2 = __VERIFIER_nondet_int(); [L558] COND TRUE length1 < 1 [L559] length1 = 1 [L561] COND FALSE !(length2 < 1) [L564] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L564] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L565] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L565] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L566] FCALL nondetString1[length1-1] = '\0' [L567] FCALL nondetString2[length2-1] = '\0' [L568] CALL cstrncmp(nondetString1,nondetString2,__VERIFIER_nondet_int()) [L542] unsigned char uc1, uc2; [L543] COND FALSE !(n == 0) [L545] EXPR n-- [L545] n-- > 0 && *s1 == *s2 [L545] FCALL \read(*s1) [L545] FCALL \read(*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: [L556] int length1 = __VERIFIER_nondet_int(); [L557] int length2 = __VERIFIER_nondet_int(); [L558] COND TRUE length1 < 1 [L559] length1 = 1 [L561] COND FALSE !(length2 < 1) [L564] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L564] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L565] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L565] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L566] FCALL nondetString1[length1-1] = '\0' [L567] FCALL nondetString2[length2-1] = '\0' [L568] CALL cstrncmp(nondetString1,nondetString2,__VERIFIER_nondet_int()) [L542] unsigned char uc1, uc2; [L543] COND FALSE !(n == 0) [L545] EXPR n-- [L545] n-- > 0 && *s1 == *s2 [L545] COND FALSE !(n-- > 0 && *s1 == *s2) [L551] FCALL \read(*s1) - 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: [L556] int length1 = __VERIFIER_nondet_int(); [L557] int length2 = __VERIFIER_nondet_int(); [L558] COND TRUE length1 < 1 [L559] length1 = 1 [L561] COND FALSE !(length2 < 1) [L564] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L564] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L565] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L565] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L566] FCALL nondetString1[length1-1] = '\0' [L567] FCALL nondetString2[length2-1] = '\0' [L568] CALL cstrncmp(nondetString1,nondetString2,__VERIFIER_nondet_int()) [L542] unsigned char uc1, uc2; [L543] COND FALSE !(n == 0) [L545] EXPR n-- [L545] n-- > 0 && *s1 == *s2 [L545] COND FALSE !(n-- > 0 && *s1 == *s2) [L551] EXPR, FCALL \read(*s1) [L551] uc1 = (*(unsigned char *) s1) [L552] FCALL \read(*s2) - UnprovableResult [Line: 555]: 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: [L556] int length1 = __VERIFIER_nondet_int(); [L557] int length2 = __VERIFIER_nondet_int(); [L558] COND TRUE length1 < 1 [L559] length1 = 1 [L561] COND FALSE !(length2 < 1) [L564] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L564] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L565] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L565] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L566] FCALL nondetString1[length1-1] = '\0' [L567] FCALL nondetString2[length2-1] = '\0' [L568] CALL, EXPR cstrncmp(nondetString1,nondetString2,__VERIFIER_nondet_int()) [L542] unsigned char uc1, uc2; [L543] COND TRUE n == 0 [L544] RET return 0; [L568] EXPR cstrncmp(nondetString1,nondetString2,__VERIFIER_nondet_int()) [L568] return cstrncmp(nondetString1,nondetString2,__VERIFIER_nondet_int()); - 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: [L556] int length1 = __VERIFIER_nondet_int(); [L557] int length2 = __VERIFIER_nondet_int(); [L558] COND TRUE length1 < 1 [L559] length1 = 1 [L561] COND FALSE !(length2 < 1) [L564] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L564] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L565] EXPR, FCALL __builtin_alloca (length2 * sizeof(char)) [L565] char* nondetString2 = (char*) __builtin_alloca (length2 * sizeof(char)); [L566] FCALL nondetString1[length1-1] = '\0' [L567] FCALL nondetString2[length2-1] = '\0' [L568] CALL cstrncmp(nondetString1,nondetString2,__VERIFIER_nondet_int()) [L542] unsigned char uc1, uc2; [L543] COND FALSE !(n == 0) [L545] EXPR n-- [L545] n-- > 0 && *s1 == *s2 [L545] EXPR, FCALL \read(*s1) [L545] EXPR, FCALL \read(*s2) [L545] n-- > 0 && *s1 == *s2 [L545] COND TRUE n-- > 0 && *s1 == *s2 [L546] n == 0 || *s1 == '\0' [L546] FCALL \read(*s1) - 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 - 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/cstrncmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_13-57-15-737.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_13-57-15-737.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrncmp-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_13-57-15-737.csv Received shutdown request...