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/substring-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 14:05:33,367 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 14:05:33,368 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 14:05:33,385 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 14:05:33,385 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 14:05:33,386 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 14:05:33,387 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 14:05:33,389 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 14:05:33,391 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 14:05:33,392 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 14:05:33,393 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 14:05:33,393 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 14:05:33,395 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 14:05:33,396 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 14:05:33,397 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 14:05:33,400 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 14:05:33,402 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 14:05:33,404 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 14:05:33,406 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 14:05:33,407 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 14:05:33,410 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 14:05:33,416 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 14:05:33,427 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 14:05:33,427 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 14:05:33,428 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 14:05:33,428 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 14:05:33,428 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 14:05:33,428 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 14:05:33,428 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 14:05:33,429 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 14:05:33,429 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 14:05:33,430 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 14:05:33,430 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 14:05:33,430 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 14:05:33,430 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 14:05:33,430 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 14:05:33,431 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 14:05:33,431 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 14:05:33,431 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 14:05:33,431 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 14:05:33,431 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 14:05:33,432 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 14:05:33,432 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 14:05:33,432 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 14:05:33,432 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 14:05:33,432 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 14:05:33,433 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 14:05:33,433 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 14:05:33,433 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 14:05:33,433 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 14:05:33,433 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 14:05:33,434 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 14:05:33,434 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 14:05:33,434 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 14:05:33,435 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 14:05:33,435 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 14:05:33,474 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 14:05:33,487 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 14:05:33,492 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 14:05:33,493 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 14:05:33,494 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 14:05:33,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/substring-alloca_true-valid-memsafety_true-termination.i [2018-01-24 14:05:33,769 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 14:05:33,785 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 14:05:33,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 14:05:33,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 14:05:33,792 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 14:05:33,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 02:05:33" (1/1) ... [2018-01-24 14:05:33,796 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386958ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:05:33, skipping insertion in model container [2018-01-24 14:05:33,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 02:05:33" (1/1) ... [2018-01-24 14:05:33,817 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 14:05:33,909 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 14:05:34,079 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 14:05:34,105 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 14:05:34,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:05:34 WrapperNode [2018-01-24 14:05:34,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 14:05:34,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 14:05:34,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 14:05:34,117 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 14:05:34,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:05:34" (1/1) ... [2018-01-24 14:05:34,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:05:34" (1/1) ... [2018-01-24 14:05:34,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:05:34" (1/1) ... [2018-01-24 14:05:34,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:05:34" (1/1) ... [2018-01-24 14:05:34,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:05:34" (1/1) ... [2018-01-24 14:05:34,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:05:34" (1/1) ... [2018-01-24 14:05:34,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:05:34" (1/1) ... [2018-01-24 14:05:34,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 14:05:34,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 14:05:34,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 14:05:34,171 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 14:05:34,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 02:05:34" (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 14:05:34,238 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 14:05:34,238 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 14:05:34,238 INFO L136 BoogieDeclarations]: Found implementation of procedure substring [2018-01-24 14:05:34,239 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 14:05:34,239 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 14:05:34,240 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 14:05:34,240 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 14:05:34,240 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 14:05:34,240 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 14:05:34,241 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 14:05:34,241 INFO L128 BoogieDeclarations]: Found specification of procedure substring [2018-01-24 14:05:34,241 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 14:05:34,241 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 14:05:34,241 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 14:05:34,772 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 14:05:34,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 02:05:34 BoogieIcfgContainer [2018-01-24 14:05:34,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 14:05:34,774 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 14:05:34,775 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 14:05:34,775 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 14:05:34,776 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 02:05:34" (1/1) ... [2018-01-24 14:05:34,848 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 14:06:07,235 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 14:06:07,256 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 14:06:07,260 INFO L268 AbstractInterpreter]: Visited 63 different actions 788 times. Merged at 45 different actions 400 times. Widened at 1 different actions 4 times. Found 114 fixpoints after 14 different actions. Largest state had 37 variables. [2018-01-24 14:06:07,263 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 14:06:07,264 INFO L168 Benchmark]: Toolchain (without parser) took 33493.98 ms. Allocated memory was 303.0 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 263.1 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 569.8 MB. Max. memory is 5.3 GB. [2018-01-24 14:06:07,264 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 303.0 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 14:06:07,265 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.76 ms. Allocated memory is still 303.0 MB. Free memory was 262.1 MB in the beginning and 252.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 14:06:07,265 INFO L168 Benchmark]: Boogie Preprocessor took 53.37 ms. Allocated memory is still 303.0 MB. Free memory was 252.1 MB in the beginning and 250.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-01-24 14:06:07,265 INFO L168 Benchmark]: RCFGBuilder took 602.05 ms. Allocated memory is still 303.0 MB. Free memory was 250.0 MB in the beginning and 230.4 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 5.3 GB. [2018-01-24 14:06:07,265 INFO L168 Benchmark]: Abstract Interpretation took 32488.70 ms. Allocated memory was 303.0 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 230.4 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 537.2 MB. Max. memory is 5.3 GB. [2018-01-24 14:06:07,267 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 303.0 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 330.76 ms. Allocated memory is still 303.0 MB. Free memory was 262.1 MB in the beginning and 252.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 53.37 ms. Allocated memory is still 303.0 MB. Free memory was 252.1 MB in the beginning and 250.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 602.05 ms. Allocated memory is still 303.0 MB. Free memory was 250.0 MB in the beginning and 230.4 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 32488.70 ms. Allocated memory was 303.0 MB in the beginning and 1.9 GB in the end (delta: 1.6 GB). Free memory was 230.4 MB in the beginning and 1.3 GB in the end (delta: -1.0 GB). Peak memory consumption was 537.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 48 LocStat_MAX_WEQGRAPH_SIZE : 5 LocStat_MAX_SIZEOF_WEQEDGELABEL : 3 LocStat_NO_SUPPORTING_EQUALITIES : 767 LocStat_NO_SUPPORTING_DISEQUALITIES : 133 LocStat_NO_DISJUNCTIONS : -96 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 69 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 101 TransStat_NO_SUPPORTING_DISEQUALITIES : 16 TransStat_NO_DISJUNCTIONS : 76 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 4.112843 RENAME_VARIABLES(MILLISECONDS) : 0.439891 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 1.971855 PROJECTAWAY(MILLISECONDS) : 0.089250 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.052022 DISJOIN(MILLISECONDS) : 0.303028 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.491151 ADD_EQUALITY(MILLISECONDS) : 0.035113 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.013868 #CONJOIN_DISJUNCTIVE : 1307 #RENAME_VARIABLES : 2961 #UNFREEZE : 0 #CONJOIN : 1824 #PROJECTAWAY : 1581 #ADD_WEAK_EQUALITY : 11 #DISJOIN : 341 #RENAME_VARIABLES_DISJUNCTIVE : 2771 #ADD_EQUALITY : 103 #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 substring(nondetString1,nondetString2) [L542] char *ps = s; [L543] FCALL \read(*ps) - 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 substring(nondetString1,nondetString2) [L542] char *ps = s; [L543] EXPR, FCALL \read(*ps) [L543] COND TRUE *ps != '\0' [L544] char *ps2 = ps; [L545] char *pt = t; [L546] FCALL \read(*pt) - 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 substring(nondetString1,nondetString2) [L542] char *ps = s; [L543] EXPR, FCALL \read(*ps) [L543] COND TRUE *ps != '\0' [L544] char *ps2 = ps; [L545] char *pt = t; [L546] EXPR, FCALL \read(*pt) [L546] *pt != '\0' && *pt == *ps2 [L546] FCALL \read(*pt) - 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 substring(nondetString1,nondetString2) [L542] char *ps = s; [L543] EXPR, FCALL \read(*ps) [L543] COND TRUE *ps != '\0' [L544] char *ps2 = ps; [L545] char *pt = t; [L546] EXPR, FCALL \read(*pt) [L546] *pt != '\0' && *pt == *ps2 [L546] COND FALSE !(*pt != '\0' && *pt == *ps2) [L550] FCALL \read(*pt) - 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 substring(nondetString1,nondetString2) [L542] char *ps = s; [L543] EXPR, FCALL \read(*ps) [L543] COND TRUE *ps != '\0' [L544] char *ps2 = ps; [L545] char *pt = t; [L546] EXPR, FCALL \read(*pt) [L546] *pt != '\0' && *pt == *ps2 [L546] FCALL \read(*pt) [L546] FCALL \read(*ps2) - 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 substring(nondetString1,nondetString2) [L542] char *ps = s; [L543] EXPR, FCALL \read(*ps) [L543] COND FALSE !(*ps != '\0') [L553] RET return 0; [L568] EXPR substring(nondetString1,nondetString2) [L568] return substring(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 - 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/substring-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_14-06-07-278.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/substring-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_14-06-07-278.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/substring-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_14-06-07-278.csv Received shutdown request...