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_imprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/cstrchr-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 16:21:25,063 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 16:21:25,065 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 16:21:25,081 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 16:21:25,081 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 16:21:25,082 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 16:21:25,083 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 16:21:25,085 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 16:21:25,087 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 16:21:25,088 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 16:21:25,089 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 16:21:25,089 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 16:21:25,090 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 16:21:25,091 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 16:21:25,092 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 16:21:25,095 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 16:21:25,097 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 16:21:25,099 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 16:21:25,101 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 16:21:25,102 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 16:21:25,105 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 16:21:25,105 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 16:21:25,105 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 16:21:25,107 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 16:21:25,108 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 16:21:25,109 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 16:21:25,109 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 16:21:25,110 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 16:21:25,110 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 16:21:25,111 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 16:21:25,111 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 16:21:25,112 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_imprecise.epf [2018-01-24 16:21:25,121 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 16:21:25,121 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 16:21:25,122 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 16:21:25,122 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 16:21:25,122 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 16:21:25,123 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 16:21:25,123 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 16:21:25,123 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 16:21:25,123 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 16:21:25,123 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 16:21:25,124 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 16:21:25,124 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 16:21:25,124 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 16:21:25,124 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 16:21:25,124 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 16:21:25,124 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 16:21:25,124 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 16:21:25,125 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 16:21:25,125 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 16:21:25,125 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 16:21:25,125 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 16:21:25,125 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 16:21:25,125 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 16:21:25,126 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 16:21:25,126 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 16:21:25,126 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 16:21:25,126 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 16:21:25,126 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 16:21:25,126 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 16:21:25,127 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 16:21:25,127 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 16:21:25,127 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 16:21:25,127 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 16:21:25,128 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 16:21:25,128 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 16:21:25,162 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 16:21:25,174 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 16:21:25,177 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 16:21:25,179 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 16:21:25,179 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 16:21:25,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrchr-alloca_true-valid-memsafety_true-termination.i [2018-01-24 16:21:25,345 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 16:21:25,351 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 16:21:25,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 16:21:25,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 16:21:25,357 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 16:21:25,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:21:25" (1/1) ... [2018-01-24 16:21:25,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e47ad9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:25, skipping insertion in model container [2018-01-24 16:21:25,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 04:21:25" (1/1) ... [2018-01-24 16:21:25,377 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:21:25,416 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 16:21:25,544 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:21:25,563 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 16:21:25,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:25 WrapperNode [2018-01-24 16:21:25,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 16:21:25,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 16:21:25,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 16:21:25,572 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 16:21:25,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:25" (1/1) ... [2018-01-24 16:21:25,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:25" (1/1) ... [2018-01-24 16:21:25,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:25" (1/1) ... [2018-01-24 16:21:25,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:25" (1/1) ... [2018-01-24 16:21:25,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:25" (1/1) ... [2018-01-24 16:21:25,600 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:25" (1/1) ... [2018-01-24 16:21:25,601 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:25" (1/1) ... [2018-01-24 16:21:25,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 16:21:25,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 16:21:25,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 16:21:25,605 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 16:21:25,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 04:21:25" (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 16:21:25,660 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 16:21:25,660 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 16:21:25,660 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrchr [2018-01-24 16:21:25,660 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 16:21:25,660 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 16:21:25,661 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 16:21:25,661 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 16:21:25,661 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 16:21:25,661 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 16:21:25,661 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 16:21:25,661 INFO L128 BoogieDeclarations]: Found specification of procedure cstrchr [2018-01-24 16:21:25,662 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 16:21:25,662 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 16:21:25,662 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 16:21:25,857 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 16:21:25,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:21:25 BoogieIcfgContainer [2018-01-24 16:21:25,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 16:21:25,859 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 16:21:25,859 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 16:21:25,860 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 16:21:25,861 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 04:21:25" (1/1) ... [2018-01-24 16:21:25,925 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 16:21:26,966 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 16:21:26,984 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 16:21:26,988 INFO L268 AbstractInterpreter]: Visited 45 different actions 229 times. Merged at 29 different actions 126 times. Never widened. Found 21 fixpoints after 7 different actions. Largest state had 26 variables. [2018-01-24 16:21:26,990 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 16:21:26,991 INFO L168 Benchmark]: Toolchain (without parser) took 1645.27 ms. Allocated memory was 305.7 MB in the beginning and 359.1 MB in the end (delta: 53.5 MB). Free memory was 263.6 MB in the beginning and 194.3 MB in the end (delta: 69.3 MB). Peak memory consumption was 122.8 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:26,992 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 305.7 MB. Free memory is still 269.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 16:21:26,992 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.83 ms. Allocated memory is still 305.7 MB. Free memory was 262.6 MB in the beginning and 252.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:26,992 INFO L168 Benchmark]: Boogie Preprocessor took 32.24 ms. Allocated memory is still 305.7 MB. Free memory was 252.4 MB in the beginning and 251.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-24 16:21:26,992 INFO L168 Benchmark]: RCFGBuilder took 254.22 ms. Allocated memory is still 305.7 MB. Free memory was 251.5 MB in the beginning and 234.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:26,993 INFO L168 Benchmark]: Abstract Interpretation took 1130.70 ms. Allocated memory was 305.7 MB in the beginning and 359.1 MB in the end (delta: 53.5 MB). Free memory was 234.1 MB in the beginning and 194.3 MB in the end (delta: 39.8 MB). Peak memory consumption was 93.3 MB. Max. memory is 5.3 GB. [2018-01-24 16:21:26,994 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 305.7 MB. Free memory is still 269.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 219.83 ms. Allocated memory is still 305.7 MB. Free memory was 262.6 MB in the beginning and 252.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.24 ms. Allocated memory is still 305.7 MB. Free memory was 252.4 MB in the beginning and 251.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 254.22 ms. Allocated memory is still 305.7 MB. Free memory was 251.5 MB in the beginning and 234.1 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 1130.70 ms. Allocated memory was 305.7 MB in the beginning and 359.1 MB in the end (delta: 53.5 MB). Free memory was 234.1 MB in the beginning and 194.3 MB in the end (delta: 39.8 MB). Peak memory consumption was 93.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 36 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 272 LocStat_NO_SUPPORTING_DISEQUALITIES : 33 LocStat_NO_DISJUNCTIONS : -72 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 51 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 71 TransStat_NO_SUPPORTING_DISEQUALITIES : 10 TransStat_NO_DISJUNCTIONS : 56 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.588776 RENAME_VARIABLES(MILLISECONDS) : 0.026470 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.251027 PROJECTAWAY(MILLISECONDS) : 0.753088 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001804 DISJOIN(MILLISECONDS) : 0.236586 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.044368 ADD_EQUALITY(MILLISECONDS) : 0.035522 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.084424 #CONJOIN_DISJUNCTIVE : 382 #RENAME_VARIABLES : 902 #UNFREEZE : 0 #CONJOIN : 640 #PROJECTAWAY : 599 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 87 #RENAME_VARIABLES_DISJUNCTIVE : 865 #ADD_EQUALITY : 72 #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: [L547] int length = __VERIFIER_nondet_int(); [L548] COND FALSE !(length < 1) [L551] EXPR, FCALL __builtin_alloca (length * sizeof(char)) [L551] char* nondetString = (char*) __builtin_alloca (length * sizeof(char)); [L552] 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: [L547] int length = __VERIFIER_nondet_int(); [L548] COND FALSE !(length < 1) [L551] EXPR, FCALL __builtin_alloca (length * sizeof(char)) [L551] char* nondetString = (char*) __builtin_alloca (length * sizeof(char)); [L552] FCALL nondetString[length-1] = '\0' [L553] CALL cstrchr(nondetString,__VERIFIER_nondet_int()) [L542] FCALL \read(*s) - 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 length = __VERIFIER_nondet_int(); [L548] COND FALSE !(length < 1) [L551] EXPR, FCALL __builtin_alloca (length * sizeof(char)) [L551] char* nondetString = (char*) __builtin_alloca (length * sizeof(char)); [L552] FCALL nondetString[length-1] = '\0' [L553] CALL cstrchr(nondetString,__VERIFIER_nondet_int()) [L542] EXPR, FCALL \read(*s) [L542] *s != '\0' && *s != (char)c [L542] FCALL \read(*s) - 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 length = __VERIFIER_nondet_int(); [L548] COND FALSE !(length < 1) [L551] EXPR, FCALL __builtin_alloca (length * sizeof(char)) [L551] char* nondetString = (char*) __builtin_alloca (length * sizeof(char)); [L552] FCALL nondetString[length-1] = '\0' [L553] CALL cstrchr(nondetString,__VERIFIER_nondet_int()) [L542] EXPR, FCALL \read(*s) [L542] *s != '\0' && *s != (char)c [L542] COND FALSE !(*s != '\0' && *s != (char)c) [L544] FCALL \read(*s) - 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 length = __VERIFIER_nondet_int(); [L548] COND FALSE !(length < 1) [L551] EXPR, FCALL __builtin_alloca (length * sizeof(char)) [L551] char* nondetString = (char*) __builtin_alloca (length * sizeof(char)); [L552] FCALL nondetString[length-1] = '\0' [L553] CALL cstrchr(nondetString,__VERIFIER_nondet_int()) [L542] EXPR, FCALL \read(*s) [L542] *s != '\0' && *s != (char)c [L542] COND FALSE !(*s != '\0' && *s != (char)c) [L544] EXPR, FCALL \read(*s) [L544] COND TRUE, EXPR (*s == c) ? (char *) s : 0 [L544] RET return ( (*s == c) ? (char *) s : 0 ); [L553] cstrchr(nondetString,__VERIFIER_nondet_int()) [L554] return 0; - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrchr-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_16-21-27-003.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrchr-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_16-21-27-003.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrchr-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_imprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_16-21-27-003.csv Received shutdown request...