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_smtcomp.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrncmp-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 04:04:25,967 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 04:04:25,968 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 04:04:25,984 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 04:04:25,984 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 04:04:25,986 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 04:04:25,987 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 04:04:25,988 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 04:04:25,990 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 04:04:25,991 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 04:04:25,992 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 04:04:25,993 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 04:04:25,994 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 04:04:25,995 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 04:04:25,996 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 04:04:25,999 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 04:04:26,001 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 04:04:26,003 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 04:04:26,004 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 04:04:26,006 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 04:04:26,008 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-25 04:04:26,015 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_smtcomp.epf [2018-01-25 04:04:26,023 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 04:04:26,023 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 04:04:26,024 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 04:04:26,024 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 04:04:26,024 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 04:04:26,025 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 04:04:26,025 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-25 04:04:26,025 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 04:04:26,025 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 04:04:26,025 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 04:04:26,026 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 04:04:26,026 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 04:04:26,026 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 04:04:26,026 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 04:04:26,026 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 04:04:26,026 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 04:04:26,026 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 04:04:26,027 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 04:04:26,027 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 04:04:26,027 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 04:04:26,027 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 04:04:26,027 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 04:04:26,028 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 04:04:26,028 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 04:04:26,028 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 04:04:26,028 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 04:04:26,028 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 04:04:26,029 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 04:04:26,029 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 04:04:26,029 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-25 04:04:26,029 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 04:04:26,029 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 04:04:26,029 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 04:04:26,030 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 04:04:26,030 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 04:04:26,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 04:04:26,075 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 04:04:26,079 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 04:04:26,081 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 04:04:26,081 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 04:04:26,082 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrncmp-alloca_true-valid-memsafety_true-termination.i [2018-01-25 04:04:26,266 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 04:04:26,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 04:04:26,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 04:04:26,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 04:04:26,277 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 04:04:26,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 04:04:26" (1/1) ... [2018-01-25 04:04:26,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1365a45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:04:26, skipping insertion in model container [2018-01-25 04:04:26,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 04:04:26" (1/1) ... [2018-01-25 04:04:26,295 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 04:04:26,338 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 04:04:26,459 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 04:04:26,484 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 04:04:26,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:04:26 WrapperNode [2018-01-25 04:04:26,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 04:04:26,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 04:04:26,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 04:04:26,493 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 04:04:26,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:04:26" (1/1) ... [2018-01-25 04:04:26,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:04:26" (1/1) ... [2018-01-25 04:04:26,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:04:26" (1/1) ... [2018-01-25 04:04:26,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:04:26" (1/1) ... [2018-01-25 04:04:26,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:04:26" (1/1) ... [2018-01-25 04:04:26,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:04:26" (1/1) ... [2018-01-25 04:04:26,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:04:26" (1/1) ... [2018-01-25 04:04:26,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 04:04:26,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 04:04:26,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 04:04:26,533 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 04:04:26,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 04:04:26" (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 [2018-01-25 04:04:26,588 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 04:04:26,588 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 04:04:26,588 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrncmp [2018-01-25 04:04:26,588 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 04:04:26,588 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 04:04:26,589 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 04:04:26,589 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 04:04:26,589 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 04:04:26,589 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 04:04:26,589 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 04:04:26,589 INFO L128 BoogieDeclarations]: Found specification of procedure cstrncmp [2018-01-25 04:04:26,589 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 04:04:26,589 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 04:04:26,589 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 04:04:26,830 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 04:04:26,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 04:04:26 BoogieIcfgContainer [2018-01-25 04:04:26,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 04:04:26,831 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-25 04:04:26,831 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-25 04:04:26,832 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-25 04:04:26,832 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 04:04:26" (1/1) ... [2018-01-25 04:04:26,875 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 04:04:51,765 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 04:04:51,785 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-25 04:04:51,790 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. [2018-01-25 04:04:51,791 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-25 04:04:51,792 INFO L168 Benchmark]: Toolchain (without parser) took 25525.36 ms. Allocated memory was 302.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 262.6 MB in the beginning and 553.0 MB in the end (delta: -290.4 MB). Peak memory consumption was 997.2 MB. Max. memory is 5.3 GB. [2018-01-25 04:04:51,793 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 302.5 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 04:04:51,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.46 ms. Allocated memory is still 302.5 MB. Free memory was 261.6 MB in the beginning and 251.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-25 04:04:51,793 INFO L168 Benchmark]: Boogie Preprocessor took 39.44 ms. Allocated memory is still 302.5 MB. Free memory was 251.4 MB in the beginning and 249.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-25 04:04:51,794 INFO L168 Benchmark]: RCFGBuilder took 297.89 ms. Allocated memory is still 302.5 MB. Free memory was 249.4 MB in the beginning and 229.7 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 5.3 GB. [2018-01-25 04:04:51,794 INFO L168 Benchmark]: Abstract Interpretation took 24960.37 ms. Allocated memory was 302.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 229.7 MB in the beginning and 553.0 MB in the end (delta: -323.4 MB). Peak memory consumption was 964.3 MB. Max. memory is 5.3 GB. [2018-01-25 04:04:51,796 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 302.5 MB. Free memory is still 268.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 221.46 ms. Allocated memory is still 302.5 MB. Free memory was 261.6 MB in the beginning and 251.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 39.44 ms. Allocated memory is still 302.5 MB. Free memory was 251.4 MB in the beginning and 249.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 297.89 ms. Allocated memory is still 302.5 MB. Free memory was 249.4 MB in the beginning and 229.7 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 24960.37 ms. Allocated memory was 302.5 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 229.7 MB in the beginning and 553.0 MB in the end (delta: -323.4 MB). Peak memory consumption was 964.3 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) : 0.767166 RENAME_VARIABLES(MILLISECONDS) : 0.343233 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.739620 PROJECTAWAY(MILLISECONDS) : 0.235648 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.047755 DISJOIN(MILLISECONDS) : 0.179689 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.371968 ADD_EQUALITY(MILLISECONDS) : 0.031306 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.006524 #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_smtcomp.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-25_04-04-51-805.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_smtcomp.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-25_04-04-51-805.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_smtcomp.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-25_04-04-51-805.csv Received shutdown request...