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_preciseopt.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrlen_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-25 00:33:32,235 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-25 00:33:32,236 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-25 00:33:32,251 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-25 00:33:32,252 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-25 00:33:32,253 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-25 00:33:32,254 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-25 00:33:32,255 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-25 00:33:32,257 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-25 00:33:32,258 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-25 00:33:32,259 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-25 00:33:32,259 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-25 00:33:32,260 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-25 00:33:32,261 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-25 00:33:32,262 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-25 00:33:32,265 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-25 00:33:32,267 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-25 00:33:32,269 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-25 00:33:32,270 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-25 00:33:32,272 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-25 00:33:32,274 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-25 00:33:32,279 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-25 00:33:32,280 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-25 00:33:32,280 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_preciseopt.epf [2018-01-25 00:33:32,288 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-25 00:33:32,288 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-25 00:33:32,289 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-25 00:33:32,289 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-25 00:33:32,289 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-25 00:33:32,290 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-25 00:33:32,290 INFO L133 SettingsManager]: * Flatten before fatten=true [2018-01-25 00:33:32,290 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-25 00:33:32,290 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-25 00:33:32,290 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-25 00:33:32,291 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-25 00:33:32,291 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-25 00:33:32,291 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-25 00:33:32,291 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-25 00:33:32,291 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-25 00:33:32,291 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-25 00:33:32,291 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-25 00:33:32,291 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-25 00:33:32,292 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-25 00:33:32,292 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-25 00:33:32,292 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-25 00:33:32,292 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-25 00:33:32,292 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-25 00:33:32,292 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-25 00:33:32,293 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-25 00:33:32,293 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-25 00:33:32,293 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-25 00:33:32,293 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-25 00:33:32,293 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-25 00:33:32,293 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-25 00:33:32,294 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-25 00:33:32,294 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-25 00:33:32,294 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-25 00:33:32,294 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-25 00:33:32,295 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-25 00:33:32,295 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-25 00:33:32,327 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-25 00:33:32,338 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-25 00:33:32,341 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-25 00:33:32,343 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-25 00:33:32,343 INFO L276 PluginConnector]: CDTParser initialized [2018-01-25 00:33:32,344 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrlen_unsafe_false-valid-deref.i [2018-01-25 00:33:32,501 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-25 00:33:32,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-25 00:33:32,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-25 00:33:32,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-25 00:33:32,512 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-25 00:33:32,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:33:32" (1/1) ... [2018-01-25 00:33:32,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@835657b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:33:32, skipping insertion in model container [2018-01-25 00:33:32,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.01 12:33:32" (1/1) ... [2018-01-25 00:33:32,530 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:33:32,567 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-25 00:33:32,682 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:33:32,700 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-25 00:33:32,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:33:32 WrapperNode [2018-01-25 00:33:32,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-25 00:33:32,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-25 00:33:32,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-25 00:33:32,709 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-25 00:33:32,725 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:33:32" (1/1) ... [2018-01-25 00:33:32,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:33:32" (1/1) ... [2018-01-25 00:33:32,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:33:32" (1/1) ... [2018-01-25 00:33:32,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:33:32" (1/1) ... [2018-01-25 00:33:32,738 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:33:32" (1/1) ... [2018-01-25 00:33:32,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:33:32" (1/1) ... [2018-01-25 00:33:32,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:33:32" (1/1) ... [2018-01-25 00:33:32,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-25 00:33:32,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-25 00:33:32,745 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-25 00:33:32,745 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-25 00:33:32,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.01 12:33:32" (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 00:33:32,794 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-25 00:33:32,794 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-25 00:33:32,795 INFO L136 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-01-25 00:33:32,795 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-01-25 00:33:32,795 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-25 00:33:32,795 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-25 00:33:32,795 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-25 00:33:32,795 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-25 00:33:32,795 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-25 00:33:32,796 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-25 00:33:32,796 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-25 00:33:32,796 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-25 00:33:32,796 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-25 00:33:32,796 INFO L128 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-01-25 00:33:32,796 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlen [2018-01-25 00:33:32,797 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-25 00:33:32,797 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-25 00:33:32,797 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-25 00:33:32,952 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-25 00:33:32,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:33:32 BoogieIcfgContainer [2018-01-25 00:33:32,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-25 00:33:32,953 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-25 00:33:32,953 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-25 00:33:32,953 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-25 00:33:32,954 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.01 12:33:32" (1/1) ... [2018-01-25 00:33:32,998 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-25 00:34:16,712 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-25 00:34:16,728 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-25 00:34:16,731 INFO L268 AbstractInterpreter]: Visited 39 different actions 105 times. Merged at 24 different actions 43 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 18 variables. [2018-01-25 00:34:16,732 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-25 00:34:16,733 INFO L168 Benchmark]: Toolchain (without parser) took 44231.60 ms. Allocated memory was 294.6 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 254.7 MB in the beginning and 954.1 MB in the end (delta: -699.4 MB). Peak memory consumption was 997.2 MB. Max. memory is 5.3 GB. [2018-01-25 00:34:16,734 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 294.6 MB. Free memory is still 260.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-25 00:34:16,734 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.04 ms. Allocated memory is still 294.6 MB. Free memory was 253.7 MB in the beginning and 243.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-25 00:34:16,735 INFO L168 Benchmark]: Boogie Preprocessor took 36.25 ms. Allocated memory is still 294.6 MB. Free memory was 243.5 MB in the beginning and 242.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-25 00:34:16,735 INFO L168 Benchmark]: RCFGBuilder took 207.51 ms. Allocated memory is still 294.6 MB. Free memory was 242.5 MB in the beginning and 226.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. [2018-01-25 00:34:16,736 INFO L168 Benchmark]: Abstract Interpretation took 43779.51 ms. Allocated memory was 294.6 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 226.9 MB in the beginning and 954.1 MB in the end (delta: -727.1 MB). Peak memory consumption was 969.4 MB. Max. memory is 5.3 GB. [2018-01-25 00:34:16,738 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 294.6 MB. Free memory is still 260.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 201.04 ms. Allocated memory is still 294.6 MB. Free memory was 253.7 MB in the beginning and 243.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.25 ms. Allocated memory is still 294.6 MB. Free memory was 243.5 MB in the beginning and 242.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 207.51 ms. Allocated memory is still 294.6 MB. Free memory was 242.5 MB in the beginning and 226.9 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 43779.51 ms. Allocated memory was 294.6 MB in the beginning and 2.0 GB in the end (delta: 1.7 GB). Free memory was 226.9 MB in the beginning and 954.1 MB in the end (delta: -727.1 MB). Peak memory consumption was 969.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 32 LocStat_MAX_WEQGRAPH_SIZE : 4 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 244 LocStat_NO_SUPPORTING_DISEQUALITIES : 29 LocStat_NO_DISJUNCTIONS : -64 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 47 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 73 TransStat_NO_SUPPORTING_DISEQUALITIES : 11 TransStat_NO_DISJUNCTIONS : 51 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.788992 RENAME_VARIABLES(MILLISECONDS) : 0.017976 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.588336 PROJECTAWAY(MILLISECONDS) : 0.507093 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.107920 DISJOIN(MILLISECONDS) : 0.207521 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.036157 ADD_EQUALITY(MILLISECONDS) : 0.032245 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.008790 #CONJOIN_DISJUNCTIVE : 171 #RENAME_VARIABLES : 377 #UNFREEZE : 0 #CONJOIN : 309 #PROJECTAWAY : 250 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 41 #RENAME_VARIABLES_DISJUNCTIVE : 356 #ADD_EQUALITY : 66 #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: [L557] CALL build_nondet_String() [L541] int length = __VERIFIER_nondet_int(); [L542] COND TRUE length < 1 [L543] length = 1 [L545] EXPR, FCALL malloc(length * sizeof(char)) [L545] char* nondetString = (char*) malloc(length * sizeof(char)); [L546] FCALL nondetString[length-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: [L557] CALL, EXPR build_nondet_String() [L541] int length = __VERIFIER_nondet_int(); [L542] COND TRUE length < 1 [L543] length = 1 [L545] EXPR, FCALL malloc(length * sizeof(char)) [L545] char* nondetString = (char*) malloc(length * sizeof(char)); [L546] FCALL nondetString[length-1] = '\0' [L547] RET return nondetString; [L557] EXPR build_nondet_String() [L557] char* p = build_nondet_String(); [L558] CALL cstrlen(p) [L551] const char *p = s; [L552] FCALL \read(*p) - UnprovableResult [Line: 556]: 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: [L557] CALL, EXPR build_nondet_String() [L541] int length = __VERIFIER_nondet_int(); [L542] COND TRUE length < 1 [L543] length = 1 [L545] EXPR, FCALL malloc(length * sizeof(char)) [L545] char* nondetString = (char*) malloc(length * sizeof(char)); [L546] FCALL nondetString[length-1] = '\0' [L547] RET return nondetString; [L557] EXPR build_nondet_String() [L557] char* p = build_nondet_String(); [L558] CALL, EXPR cstrlen(p) [L551] const char *p = s; [L552] EXPR, FCALL \read(*p) [L552] COND FALSE !(*p != '\0') [L554] RET return (int)(p - s); [L558] EXPR cstrlen(p) [L558] int res = cstrlen(p); [L559] FCALL free(p) [L560] return res; - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free 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]: free always succeeds For all program executions holds that free 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/cstrlen_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_preciseopt.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-25_00-34-16-749.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrlen_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_preciseopt.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-25_00-34-16-749.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrlen_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_preciseopt.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-25_00-34-16-749.csv Received shutdown request...