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_precise.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrlen_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 21:09:27,888 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 21:09:27,889 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 21:09:27,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 21:09:27,903 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 21:09:27,904 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 21:09:27,905 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 21:09:27,906 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 21:09:27,908 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 21:09:27,908 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 21:09:27,909 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 21:09:27,909 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 21:09:27,909 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 21:09:27,910 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 21:09:27,911 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 21:09:27,913 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 21:09:27,915 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 21:09:27,917 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 21:09:27,918 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 21:09:27,920 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 21:09:27,922 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 21:09:27,927 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 21:09:27,927 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 21:09:27,928 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_precise.epf [2018-01-24 21:09:27,937 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 21:09:27,938 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 21:09:27,938 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 21:09:27,939 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 21:09:27,939 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 21:09:27,939 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 21:09:27,939 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 21:09:27,939 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 21:09:27,940 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 21:09:27,940 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 21:09:27,940 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 21:09:27,941 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 21:09:27,941 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 21:09:27,941 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 21:09:27,941 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 21:09:27,941 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 21:09:27,942 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 21:09:27,942 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 21:09:27,942 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 21:09:27,942 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 21:09:27,942 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 21:09:27,943 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 21:09:27,943 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 21:09:27,943 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 21:09:27,943 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 21:09:27,943 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 21:09:27,944 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 21:09:27,944 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 21:09:27,944 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 21:09:27,944 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 21:09:27,944 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 21:09:27,944 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 21:09:27,945 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 21:09:27,945 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 21:09:27,946 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 21:09:27,979 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 21:09:27,990 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 21:09:27,993 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 21:09:27,994 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 21:09:27,994 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 21:09:27,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrlen_unsafe_false-valid-deref.i [2018-01-24 21:09:28,148 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 21:09:28,155 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 21:09:28,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 21:09:28,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 21:09:28,163 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 21:09:28,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:09:28" (1/1) ... [2018-01-24 21:09:28,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432f9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:09:28, skipping insertion in model container [2018-01-24 21:09:28,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 09:09:28" (1/1) ... [2018-01-24 21:09:28,185 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:09:28,226 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 21:09:28,333 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:09:28,348 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 21:09:28,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:09:28 WrapperNode [2018-01-24 21:09:28,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 21:09:28,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 21:09:28,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 21:09:28,354 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 21:09:28,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:09:28" (1/1) ... [2018-01-24 21:09:28,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:09:28" (1/1) ... [2018-01-24 21:09:28,374 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:09:28" (1/1) ... [2018-01-24 21:09:28,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:09:28" (1/1) ... [2018-01-24 21:09:28,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:09:28" (1/1) ... [2018-01-24 21:09:28,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:09:28" (1/1) ... [2018-01-24 21:09:28,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:09:28" (1/1) ... [2018-01-24 21:09:28,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 21:09:28,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 21:09:28,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 21:09:28,383 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 21:09:28,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 09:09:28" (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 21:09:28,430 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 21:09:28,431 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 21:09:28,431 INFO L136 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-01-24 21:09:28,431 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrlen [2018-01-24 21:09:28,431 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 21:09:28,431 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 21:09:28,431 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 21:09:28,432 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 21:09:28,432 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 21:09:28,432 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 21:09:28,432 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 21:09:28,432 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 21:09:28,432 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 21:09:28,433 INFO L128 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-01-24 21:09:28,433 INFO L128 BoogieDeclarations]: Found specification of procedure cstrlen [2018-01-24 21:09:28,433 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 21:09:28,433 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 21:09:28,433 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 21:09:28,595 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 21:09:28,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:09:28 BoogieIcfgContainer [2018-01-24 21:09:28,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 21:09:28,596 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 21:09:28,596 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 21:09:28,597 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 21:09:28,598 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 09:09:28" (1/1) ... [2018-01-24 21:09:28,654 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 21:10:13,402 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 21:10:13,421 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 21:10:13,424 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 21:10:13,426 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 21:10:13,427 INFO L168 Benchmark]: Toolchain (without parser) took 45278.17 ms. Allocated memory was 305.7 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 264.4 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 350.8 MB. Max. memory is 5.3 GB. [2018-01-24 21:10:13,428 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 305.7 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 21:10:13,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.18 ms. Allocated memory is still 305.7 MB. Free memory was 264.4 MB in the beginning and 254.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-24 21:10:13,429 INFO L168 Benchmark]: Boogie Preprocessor took 28.13 ms. Allocated memory is still 305.7 MB. Free memory was 254.4 MB in the beginning and 252.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 21:10:13,430 INFO L168 Benchmark]: RCFGBuilder took 213.23 ms. Allocated memory is still 305.7 MB. Free memory was 252.4 MB in the beginning and 237.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. [2018-01-24 21:10:13,430 INFO L168 Benchmark]: Abstract Interpretation took 44830.11 ms. Allocated memory was 305.7 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 237.4 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 323.8 MB. Max. memory is 5.3 GB. [2018-01-24 21:10:13,433 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 305.7 MB. Free memory is still 270.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 197.18 ms. Allocated memory is still 305.7 MB. Free memory was 264.4 MB in the beginning and 254.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.13 ms. Allocated memory is still 305.7 MB. Free memory was 254.4 MB in the beginning and 252.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 213.23 ms. Allocated memory is still 305.7 MB. Free memory was 252.4 MB in the beginning and 237.4 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 44830.11 ms. Allocated memory was 305.7 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 237.4 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 323.8 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) : 0.787869 RENAME_VARIABLES(MILLISECONDS) : 0.017691 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.585102 PROJECTAWAY(MILLISECONDS) : 0.558798 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.129564 DISJOIN(MILLISECONDS) : 0.257079 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.038631 ADD_EQUALITY(MILLISECONDS) : 0.029428 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.012279 #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_precise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_21-10-13-444.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_precise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_21-10-13-444.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_precise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_21-10-13-444.csv Received shutdown request...