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_mostprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrlen_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 17:45:10,827 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 17:45:10,829 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 17:45:10,841 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 17:45:10,841 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 17:45:10,842 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 17:45:10,842 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 17:45:10,843 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 17:45:10,846 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 17:45:10,846 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 17:45:10,847 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 17:45:10,847 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 17:45:10,848 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 17:45:10,849 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 17:45:10,850 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 17:45:10,852 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 17:45:10,854 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 17:45:10,856 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 17:45:10,858 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 17:45:10,859 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 17:45:10,861 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 17:45:10,866 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 17:45:10,866 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 17:45:10,867 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_mostprecise.epf [2018-01-24 17:45:10,876 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 17:45:10,876 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 17:45:10,877 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 17:45:10,877 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 17:45:10,878 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 17:45:10,878 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 17:45:10,878 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 17:45:10,878 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 17:45:10,878 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 17:45:10,879 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 17:45:10,879 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 17:45:10,879 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 17:45:10,880 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 17:45:10,880 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 17:45:10,880 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 17:45:10,880 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 17:45:10,880 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 17:45:10,881 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 17:45:10,881 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 17:45:10,881 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 17:45:10,881 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 17:45:10,881 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 17:45:10,882 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 17:45:10,882 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 17:45:10,882 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 17:45:10,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:45:10,883 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 17:45:10,883 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 17:45:10,883 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 17:45:10,883 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 17:45:10,883 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 17:45:10,883 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 17:45:10,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 17:45:10,884 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 17:45:10,885 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 17:45:10,885 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 17:45:10,920 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 17:45:10,932 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 17:45:10,936 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 17:45:10,938 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 17:45:10,939 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 17:45:10,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrlen_unsafe_false-valid-deref.i [2018-01-24 17:45:11,112 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 17:45:11,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 17:45:11,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 17:45:11,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 17:45:11,124 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 17:45:11,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:45:11" (1/1) ... [2018-01-24 17:45:11,127 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b9b4b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:45:11, skipping insertion in model container [2018-01-24 17:45:11,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:45:11" (1/1) ... [2018-01-24 17:45:11,144 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:45:11,185 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:45:11,301 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:45:11,315 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:45:11,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:45:11 WrapperNode [2018-01-24 17:45:11,321 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 17:45:11,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 17:45:11,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 17:45:11,323 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 17:45:11,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:45:11" (1/1) ... [2018-01-24 17:45:11,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:45:11" (1/1) ... [2018-01-24 17:45:11,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:45:11" (1/1) ... [2018-01-24 17:45:11,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:45:11" (1/1) ... [2018-01-24 17:45:11,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:45:11" (1/1) ... [2018-01-24 17:45:11,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:45:11" (1/1) ... [2018-01-24 17:45:11,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:45:11" (1/1) ... [2018-01-24 17:45:11,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 17:45:11,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 17:45:11,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 17:45:11,358 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 17:45:11,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:45:11" (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 17:45:11,406 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 17:45:11,406 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 17:45:11,406 INFO L136 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-01-24 17:45:11,406 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-01-24 17:45:11,406 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 17:45:11,407 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 17:45:11,407 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 17:45:11,407 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 17:45:11,407 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 17:45:11,407 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 17:45:11,407 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 17:45:11,407 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 17:45:11,407 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 17:45:11,407 INFO L128 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-01-24 17:45:11,407 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlen [2018-01-24 17:45:11,408 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 17:45:11,408 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 17:45:11,408 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 17:45:11,569 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 17:45:11,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:45:11 BoogieIcfgContainer [2018-01-24 17:45:11,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 17:45:11,570 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 17:45:11,570 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 17:45:11,571 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 17:45:11,571 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:45:11" (1/1) ... [2018-01-24 17:45:11,627 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:45:56,358 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:45:56,372 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 17:45:56,375 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. [2018-01-24 17:45:56,376 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 17:45:56,377 INFO L168 Benchmark]: Toolchain (without parser) took 45264.34 ms. Allocated memory was 309.3 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 268.4 MB in the beginning and 508.7 MB in the end (delta: -240.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-24 17:45:56,378 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 309.3 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:45:56,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.25 ms. Allocated memory is still 309.3 MB. Free memory was 268.4 MB in the beginning and 258.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:45:56,379 INFO L168 Benchmark]: Boogie Preprocessor took 35.29 ms. Allocated memory is still 309.3 MB. Free memory was 258.3 MB in the beginning and 256.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:45:56,379 INFO L168 Benchmark]: RCFGBuilder took 211.85 ms. Allocated memory is still 309.3 MB. Free memory was 256.3 MB in the beginning and 241.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. [2018-01-24 17:45:56,380 INFO L168 Benchmark]: Abstract Interpretation took 44806.35 ms. Allocated memory was 309.3 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 241.8 MB in the beginning and 508.7 MB in the end (delta: -266.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-24 17:45:56,383 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 309.3 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 203.25 ms. Allocated memory is still 309.3 MB. Free memory was 268.4 MB in the beginning and 258.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.29 ms. Allocated memory is still 309.3 MB. Free memory was 258.3 MB in the beginning and 256.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 211.85 ms. Allocated memory is still 309.3 MB. Free memory was 256.3 MB in the beginning and 241.8 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 44806.35 ms. Allocated memory was 309.3 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 241.8 MB in the beginning and 508.7 MB in the end (delta: -266.9 MB). Peak memory consumption was 1.1 GB. 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) : 0.496897 RENAME_VARIABLES(MILLISECONDS) : 0.014248 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.359753 PROJECTAWAY(MILLISECONDS) : 0.337427 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.126477 DISJOIN(MILLISECONDS) : 0.137672 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.027644 ADD_EQUALITY(MILLISECONDS) : 0.026540 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.006266 #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_mostprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_17-45-56-395.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_mostprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_17-45-56-395.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_mostprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_17-45-56-395.csv Received shutdown request...