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/cstrchr_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 17:44:56,301 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 17:44:56,303 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 17:44:56,320 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 17:44:56,320 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 17:44:56,321 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 17:44:56,322 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 17:44:56,324 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 17:44:56,326 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 17:44:56,327 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 17:44:56,328 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 17:44:56,328 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 17:44:56,329 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 17:44:56,331 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 17:44:56,332 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 17:44:56,334 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 17:44:56,336 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 17:44:56,338 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 17:44:56,339 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 17:44:56,340 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 17:44:56,342 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 17:44:56,347 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 17:44:56,348 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 17:44:56,348 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 17:44:56,357 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 17:44:56,358 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 17:44:56,358 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 17:44:56,359 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 17:44:56,359 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 17:44:56,359 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 17:44:56,359 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 17:44:56,359 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 17:44:56,360 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 17:44:56,360 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 17:44:56,360 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 17:44:56,361 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 17:44:56,361 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 17:44:56,361 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 17:44:56,361 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 17:44:56,361 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 17:44:56,361 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 17:44:56,362 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 17:44:56,362 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 17:44:56,362 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 17:44:56,362 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 17:44:56,362 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 17:44:56,363 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 17:44:56,363 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 17:44:56,363 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 17:44:56,363 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:44:56,363 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 17:44:56,364 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 17:44:56,364 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 17:44:56,364 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 17:44:56,364 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-24 17:44:56,364 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 17:44:56,364 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 17:44:56,365 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 17:44:56,365 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 17:44:56,366 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 17:44:56,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 17:44:56,411 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 17:44:56,416 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 17:44:56,417 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 17:44:56,418 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 17:44:56,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/cstrchr_unsafe_false-valid-deref.i [2018-01-24 17:44:56,564 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 17:44:56,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 17:44:56,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 17:44:56,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 17:44:56,575 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 17:44:56,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:44:56" (1/1) ... [2018-01-24 17:44:56,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fd0ac53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:44:56, skipping insertion in model container [2018-01-24 17:44:56,579 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:44:56" (1/1) ... [2018-01-24 17:44:56,595 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:44:56,629 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:44:56,742 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:44:56,759 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:44:56,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:44:56 WrapperNode [2018-01-24 17:44:56,767 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 17:44:56,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 17:44:56,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 17:44:56,768 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 17:44:56,785 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:44:56" (1/1) ... [2018-01-24 17:44:56,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:44:56" (1/1) ... [2018-01-24 17:44:56,793 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:44:56" (1/1) ... [2018-01-24 17:44:56,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:44:56" (1/1) ... [2018-01-24 17:44:56,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:44:56" (1/1) ... [2018-01-24 17:44:56,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:44:56" (1/1) ... [2018-01-24 17:44:56,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:44:56" (1/1) ... [2018-01-24 17:44:56,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 17:44:56,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 17:44:56,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 17:44:56,806 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 17:44:56,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:44:56" (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 17:44:56,852 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 17:44:56,852 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 17:44:56,852 INFO L136 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2018-01-24 17:44:56,853 INFO L136 BoogieDeclarations]: Found implementation of procedure cstrchr [2018-01-24 17:44:56,853 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 17:44:56,853 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-24 17:44:56,853 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-24 17:44:56,853 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 17:44:56,853 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 17:44:56,853 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 17:44:56,853 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 17:44:56,853 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 17:44:56,853 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 17:44:56,853 INFO L128 BoogieDeclarations]: Found specification of procedure build_nondet_String [2018-01-24 17:44:56,854 INFO L128 BoogieDeclarations]: Found specification of procedure cstrchr [2018-01-24 17:44:56,854 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 17:44:56,854 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 17:44:56,854 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 17:44:57,035 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 17:44:57,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:44:57 BoogieIcfgContainer [2018-01-24 17:44:57,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 17:44:57,037 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2018-01-24 17:44:57,037 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2018-01-24 17:44:57,037 INFO L276 PluginConnector]: Abstract Interpretation initialized [2018-01-24 17:44:57,038 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:44:57" (1/1) ... [2018-01-24 17:44:57,091 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:45:34,593 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:45:34,617 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 17:45:34,621 INFO L268 AbstractInterpreter]: Visited 54 different actions 266 times. Merged at 37 different actions 144 times. Never widened. Found 24 fixpoints after 10 different actions. Largest state had 26 variables. [2018-01-24 17:45:34,623 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2018-01-24 17:45:34,624 INFO L168 Benchmark]: Toolchain (without parser) took 38059.36 ms. Allocated memory was 300.9 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 261.0 MB in the beginning and 164.5 MB in the end (delta: 96.5 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. [2018-01-24 17:45:34,625 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 300.9 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:45:34,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 196.83 ms. Allocated memory is still 300.9 MB. Free memory was 260.0 MB in the beginning and 249.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-24 17:45:34,626 INFO L168 Benchmark]: Boogie Preprocessor took 37.89 ms. Allocated memory is still 300.9 MB. Free memory was 249.9 MB in the beginning and 247.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. [2018-01-24 17:45:34,626 INFO L168 Benchmark]: RCFGBuilder took 230.35 ms. Allocated memory is still 300.9 MB. Free memory was 247.8 MB in the beginning and 230.2 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. [2018-01-24 17:45:34,626 INFO L168 Benchmark]: Abstract Interpretation took 37586.40 ms. Allocated memory was 300.9 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 230.2 MB in the beginning and 164.5 MB in the end (delta: 65.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. [2018-01-24 17:45:34,628 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 300.9 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 196.83 ms. Allocated memory is still 300.9 MB. Free memory was 260.0 MB in the beginning and 249.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.89 ms. Allocated memory is still 300.9 MB. Free memory was 249.9 MB in the beginning and 247.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 5.3 GB. * RCFGBuilder took 230.35 ms. Allocated memory is still 300.9 MB. Free memory was 247.8 MB in the beginning and 230.2 MB in the end (delta: 17.6 MB). Peak memory consumption was 17.6 MB. Max. memory is 5.3 GB. * Abstract Interpretation took 37586.40 ms. Allocated memory was 300.9 MB in the beginning and 1.6 GB in the end (delta: 1.3 GB). Free memory was 230.2 MB in the beginning and 164.5 MB in the end (delta: 65.7 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 43 LocStat_MAX_WEQGRAPH_SIZE : 4 LocStat_MAX_SIZEOF_WEQEDGELABEL : 1 LocStat_NO_SUPPORTING_EQUALITIES : 341 LocStat_NO_SUPPORTING_DISEQUALITIES : 43 LocStat_NO_DISJUNCTIONS : -86 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 62 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 101 TransStat_NO_SUPPORTING_DISEQUALITIES : 16 TransStat_NO_DISJUNCTIONS : 71 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.966062 RENAME_VARIABLES(MILLISECONDS) : 0.288581 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.932163 PROJECTAWAY(MILLISECONDS) : 0.368380 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.112893 DISJOIN(MILLISECONDS) : 0.152967 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.314654 ADD_EQUALITY(MILLISECONDS) : 0.033336 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.012559 #CONJOIN_DISJUNCTIVE : 423 #RENAME_VARIABLES : 960 #UNFREEZE : 0 #CONJOIN : 687 #PROJECTAWAY : 593 #ADD_WEAK_EQUALITY : 6 #DISJOIN : 106 #RENAME_VARIABLES_DISJUNCTIVE : 894 #ADD_EQUALITY : 94 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 14 - 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: [L556] 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: [L556] 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; [L556] EXPR build_nondet_String() [L556] char* s = build_nondet_String(); [L557] CALL cstrchr(s,__VERIFIER_nondet_int()) [L551] 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: [L556] 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; [L556] EXPR build_nondet_String() [L556] char* s = build_nondet_String(); [L557] CALL cstrchr(s,__VERIFIER_nondet_int()) [L551] EXPR, FCALL \read(*s) [L551] *s != '\0' && *s != (char)c [L551] 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: [L556] 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; [L556] EXPR build_nondet_String() [L556] char* s = build_nondet_String(); [L557] CALL cstrchr(s,__VERIFIER_nondet_int()) [L551] EXPR, FCALL \read(*s) [L551] *s != '\0' && *s != (char)c [L551] COND FALSE !(*s != '\0' && *s != (char)c) [L553] 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: [L556] 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; [L556] EXPR build_nondet_String() [L556] char* s = build_nondet_String(); [L557] CALL cstrchr(s,__VERIFIER_nondet_int()) [L551] EXPR, FCALL \read(*s) [L551] *s != '\0' && *s != (char)c [L551] COND FALSE !(*s != '\0' && *s != (char)c) [L553] EXPR, FCALL \read(*s) [L553] COND FALSE, EXPR !((*s == c) ? (char *) s : 0) [L553] RET return ( (*s == c) ? (char *) s : 0 ); [L557] cstrchr(s,__VERIFIER_nondet_int()) [L557] FCALL cstrchr(s,__VERIFIER_nondet_int()) - 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: [L556] 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; [L556] EXPR build_nondet_String() [L556] char* s = build_nondet_String(); [L557] CALL cstrchr(s,__VERIFIER_nondet_int()) [L551] EXPR, FCALL \read(*s) [L551] *s != '\0' && *s != (char)c [L551] COND FALSE !(*s != '\0' && *s != (char)c) [L553] EXPR, FCALL \read(*s) [L553] COND FALSE, EXPR !((*s == c) ? (char *) s : 0) [L553] RET return ( (*s == c) ? (char *) s : 0 ); [L557] cstrchr(s,__VERIFIER_nondet_int()) [L557] FCALL cstrchr(s,__VERIFIER_nondet_int()) - UnprovableResult [Line: 555]: 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: [L556] 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; [L556] EXPR build_nondet_String() [L556] char* s = build_nondet_String(); [L557] CALL, EXPR cstrchr(s,__VERIFIER_nondet_int()) [L551] EXPR, FCALL \read(*s) [L551] *s != '\0' && *s != (char)c [L551] COND FALSE !(*s != '\0' && *s != (char)c) [L553] EXPR, FCALL \read(*s) [L553] COND TRUE, EXPR (*s == c) ? (char *) s : 0 [L553] RET return ( (*s == c) ? (char *) s : 0 ); [L557] EXPR cstrchr(s,__VERIFIER_nondet_int()) [L557] EXPR, FCALL cstrchr(s,__VERIFIER_nondet_int()) [L557] int res = *cstrchr(s,__VERIFIER_nondet_int()); [L558] FCALL free(s) [L559] return res; - 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 - 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 - 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_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_mostprecise.epf_AbstractInterpretationC.xml/Csv-Benchmark-0-2018-01-24_17-45-34-639.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrchr_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_mostprecise.epf_AbstractInterpretationC.xml/Csv-VPDomainBenchmark-0-2018-01-24_17-45-34-639.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/cstrchr_unsafe_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_mostprecise.epf_AbstractInterpretationC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_17-45-34-639.csv Received shutdown request...