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/rec_strlen-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 18:13:40,570 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 18:13:40,571 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 18:13:40,586 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 18:13:40,587 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 18:13:40,588 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 18:13:40,589 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 18:13:40,590 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 18:13:40,593 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 18:13:40,594 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 18:13:40,594 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 18:13:40,595 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 18:13:40,596 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 18:13:40,597 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 18:13:40,598 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 18:13:40,600 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 18:13:40,602 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 18:13:40,604 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 18:13:40,606 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 18:13:40,607 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 18:13:40,609 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 18:13:40,615 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 18:13:40,623 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 18:13:40,623 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 18:13:40,624 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 18:13:40,624 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 18:13:40,624 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 18:13:40,624 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 18:13:40,624 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 18:13:40,624 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 18:13:40,625 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 18:13:40,625 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 18:13:40,625 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 18:13:40,625 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 18:13:40,625 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 18:13:40,626 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 18:13:40,626 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 18:13:40,626 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 18:13:40,626 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 18:13:40,626 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 18:13:40,626 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 18:13:40,626 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 18:13:40,626 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 18:13:40,627 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 18:13:40,627 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 18:13:40,627 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 18:13:40,627 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 18:13:40,627 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 18:13:40,628 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 18:13:40,628 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 18:13:40,628 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 18:13:40,628 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 18:13:40,628 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 18:13:40,628 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 18:13:40,628 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 18:13:40,628 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 18:13:40,629 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 18:13:40,629 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 18:13:40,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 18:13:40,672 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 18:13:40,675 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 18:13:40,676 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 18:13:40,677 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 18:13:40,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/rec_strlen-alloca_true-valid-memsafety_true-termination.i [2018-01-24 18:13:40,832 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 18:13:40,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 18:13:40,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 18:13:40,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 18:13:40,841 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 18:13:40,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 06:13:40" (1/1) ... [2018-01-24 18:13:40,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a54d414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 06:13:40, skipping insertion in model container [2018-01-24 18:13:40,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 06:13:40" (1/1) ... [2018-01-24 18:13:40,857 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 18:13:40,893 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 18:13:41,010 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 18:13:41,028 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 18:13:41,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 06:13:41 WrapperNode [2018-01-24 18:13:41,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 18:13:41,037 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 18:13:41,037 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 18:13:41,038 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 18:13:41,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 06:13:41" (1/1) ... [2018-01-24 18:13:41,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 06:13:41" (1/1) ... [2018-01-24 18:13:41,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 06:13:41" (1/1) ... [2018-01-24 18:13:41,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 06:13:41" (1/1) ... [2018-01-24 18:13:41,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 06:13:41" (1/1) ... [2018-01-24 18:13:41,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 06:13:41" (1/1) ... [2018-01-24 18:13:41,065 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 06:13:41" (1/1) ... [2018-01-24 18:13:41,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 18:13:41,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 18:13:41,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 18:13:41,069 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 18:13:41,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 06:13:41" (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 18:13:41,119 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 18:13:41,119 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 18:13:41,119 INFO L136 BoogieDeclarations]: Found implementation of procedure strlen_rec [2018-01-24 18:13:41,119 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 18:13:41,119 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 18:13:41,119 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 18:13:41,120 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 18:13:41,120 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 18:13:41,120 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 18:13:41,120 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 18:13:41,120 INFO L128 BoogieDeclarations]: Found specification of procedure strlen_rec [2018-01-24 18:13:41,120 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 18:13:41,120 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 18:13:41,120 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 18:13:41,269 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 18:13:41,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 06:13:41 BoogieIcfgContainer [2018-01-24 18:13:41,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 18:13:41,270 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 18:13:41,270 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 18:13:41,270 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 18:13:41,271 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 06:13:41" (1/1) ... [2018-01-24 18:13:41,319 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 18:14:38,766 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 18:14:38,785 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 18:14:38,788 INFO L268 AbstractInterpreter]: Visited 32 different actions 145 times. Merged at 16 different actions 46 times. Never widened. Found 8 fixpoints after 5 different actions. Largest state had 18 variables. [2018-01-24 18:14:38,790 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 18:14:38,791 INFO L168 Benchmark]: Toolchain (without parser) took 57959.33 ms. Allocated memory was 307.8 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 266.7 MB in the beginning and 541.3 MB in the end (delta: -274.6 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. [2018-01-24 18:14:38,792 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 307.8 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 18:14:38,793 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.45 ms. Allocated memory is still 307.8 MB. Free memory was 266.7 MB in the beginning and 256.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. [2018-01-24 18:14:38,793 INFO L168 Benchmark]: Boogie Preprocessor took 30.60 ms. Allocated memory is still 307.8 MB. Free memory was 256.4 MB in the beginning and 254.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 18:14:38,793 INFO L168 Benchmark]: RCFGBuilder took 201.25 ms. Allocated memory is still 307.8 MB. Free memory was 254.5 MB in the beginning and 241.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. [2018-01-24 18:14:38,794 INFO L168 Benchmark]: Abstract Interpretation took 57520.66 ms. Allocated memory was 307.8 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 241.4 MB in the beginning and 541.3 MB in the end (delta: -299.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-24 18:14:38,796 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 307.8 MB. Free memory is still 272.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 200.45 ms. Allocated memory is still 307.8 MB. Free memory was 266.7 MB in the beginning and 256.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.60 ms. Allocated memory is still 307.8 MB. Free memory was 256.4 MB in the beginning and 254.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 201.25 ms. Allocated memory is still 307.8 MB. Free memory was 254.5 MB in the beginning and 241.4 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 57520.66 ms. Allocated memory was 307.8 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 241.4 MB in the beginning and 541.3 MB in the end (delta: -299.9 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 : 27 LocStat_MAX_WEQGRAPH_SIZE : 4 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 208 LocStat_NO_SUPPORTING_DISEQUALITIES : 29 LocStat_NO_DISJUNCTIONS : -54 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 38 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 40 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.971832 RENAME_VARIABLES(MILLISECONDS) : 0.152818 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.926953 PROJECTAWAY(MILLISECONDS) : 0.193725 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.100785 DISJOIN(MILLISECONDS) : 0.206845 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.177794 ADD_EQUALITY(MILLISECONDS) : 0.017003 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.013875 #CONJOIN_DISJUNCTIVE : 207 #RENAME_VARIABLES : 523 #UNFREEZE : 0 #CONJOIN : 399 #PROJECTAWAY : 379 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 99 #RENAME_VARIABLES_DISJUNCTIVE : 512 #ADD_EQUALITY : 47 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 5 - 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: [L547] int length1 = __VERIFIER_nondet_int(); [L548] COND TRUE length1 < 1 [L549] length1 = 1 [L551] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L551] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L552] 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: [L547] int length1 = __VERIFIER_nondet_int(); [L548] COND TRUE length1 < 1 [L549] length1 = 1 [L551] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L551] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L552] FCALL nondetString1[length1-1] = '\0' [L553] CALL strlen_rec(nondetString1) [L541] FCALL \read(*p) - UnprovableResult [Line: 546]: 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: [L547] int length1 = __VERIFIER_nondet_int(); [L548] COND TRUE length1 < 1 [L549] length1 = 1 [L551] EXPR, FCALL __builtin_alloca (length1 * sizeof(char)) [L551] char* nondetString1 = (char*) __builtin_alloca (length1 * sizeof(char)); [L552] FCALL nondetString1[length1-1] = '\0' [L553] CALL strlen_rec(nondetString1) [L541] EXPR, FCALL \read(*p) [L541] COND TRUE *p == '\0' [L542] RET return 0; [L553] strlen_rec(nondetString1) - 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/rec_strlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_mostprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_18-14-38-806.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rec_strlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_mostprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_18-14-38-806.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rec_strlen-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_mostprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_18-14-38-806.csv Received shutdown request...