./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c81e125b758f7bd46f8766ed5eff061983b5b8e8 ......................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-03 02:45:22,596 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 02:45:22,597 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 02:45:22,604 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 02:45:22,604 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 02:45:22,605 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 02:45:22,605 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 02:45:22,606 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 02:45:22,607 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 02:45:22,607 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 02:45:22,608 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 02:45:22,608 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 02:45:22,608 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 02:45:22,609 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 02:45:22,609 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 02:45:22,609 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 02:45:22,610 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 02:45:22,611 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 02:45:22,612 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 02:45:22,613 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 02:45:22,613 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 02:45:22,614 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 02:45:22,616 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 02:45:22,616 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 02:45:22,616 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 02:45:22,617 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 02:45:22,617 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 02:45:22,618 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 02:45:22,618 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 02:45:22,618 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 02:45:22,619 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 02:45:22,619 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-03 02:45:22,619 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-03 02:45:22,619 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-03 02:45:22,620 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-03 02:45:22,620 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-03 02:45:22,620 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-12-03 02:45:22,629 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 02:45:22,629 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 02:45:22,630 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 02:45:22,630 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 02:45:22,630 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 02:45:22,630 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 02:45:22,631 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 02:45:22,631 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 02:45:22,631 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 02:45:22,631 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-12-03 02:45:22,631 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 02:45:22,631 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-12-03 02:45:22,632 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 02:45:22,632 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 02:45:22,632 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 02:45:22,632 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 02:45:22,633 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 02:45:22,633 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-03 02:45:22,633 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 02:45:22,633 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 02:45:22,633 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 02:45:22,633 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-03 02:45:22,633 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-03 02:45:22,634 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-03 02:45:22,634 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 02:45:22,634 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 02:45:22,634 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 02:45:22,634 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 02:45:22,634 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-03 02:45:22,635 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 02:45:22,635 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 02:45:22,635 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 02:45:22,635 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 02:45:22,635 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 02:45:22,635 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 02:45:22,635 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 02:45:22,636 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c81e125b758f7bd46f8766ed5eff061983b5b8e8 [2018-12-03 02:45:22,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 02:45:22,665 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 02:45:22,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 02:45:22,668 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-03 02:45:22,668 INFO L276 PluginConnector]: CDTParser initialized [2018-12-03 02:45:22,669 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe_false-valid-deref.i [2018-12-03 02:45:22,706 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/data/247bf6934/70151a45bda64b2997c203eab61b2355/FLAG5c172d440 [2018-12-03 02:45:23,125 INFO L307 CDTParser]: Found 1 translation units. [2018-12-03 02:45:23,125 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe_false-valid-deref.i [2018-12-03 02:45:23,128 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/data/247bf6934/70151a45bda64b2997c203eab61b2355/FLAG5c172d440 [2018-12-03 02:45:23,136 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/data/247bf6934/70151a45bda64b2997c203eab61b2355 [2018-12-03 02:45:23,138 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 02:45:23,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-03 02:45:23,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-03 02:45:23,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-03 02:45:23,142 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-03 02:45:23,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:45:23" (1/1) ... [2018-12-03 02:45:23,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dd63051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23, skipping insertion in model container [2018-12-03 02:45:23,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 02:45:23" (1/1) ... [2018-12-03 02:45:23,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-03 02:45:23,157 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-03 02:45:23,243 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:45:23,250 INFO L191 MainTranslator]: Completed pre-run [2018-12-03 02:45:23,259 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-03 02:45:23,268 INFO L195 MainTranslator]: Completed translation [2018-12-03 02:45:23,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23 WrapperNode [2018-12-03 02:45:23,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-03 02:45:23,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 02:45:23,269 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 02:45:23,269 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 02:45:23,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23" (1/1) ... [2018-12-03 02:45:23,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23" (1/1) ... [2018-12-03 02:45:23,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 02:45:23,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 02:45:23,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 02:45:23,282 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 02:45:23,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23" (1/1) ... [2018-12-03 02:45:23,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23" (1/1) ... [2018-12-03 02:45:23,289 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23" (1/1) ... [2018-12-03 02:45:23,289 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23" (1/1) ... [2018-12-03 02:45:23,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23" (1/1) ... [2018-12-03 02:45:23,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23" (1/1) ... [2018-12-03 02:45:23,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23" (1/1) ... [2018-12-03 02:45:23,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 02:45:23,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 02:45:23,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 02:45:23,297 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 02:45:23,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/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 [2018-12-03 02:45:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-03 02:45:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-12-03 02:45:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-12-03 02:45:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-03 02:45:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-03 02:45:23,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-03 02:45:23,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-03 02:45:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-03 02:45:23,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 02:45:23,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 02:45:23,467 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-03 02:45:23,468 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-03 02:45:23,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:45:23 BoogieIcfgContainer [2018-12-03 02:45:23,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 02:45:23,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 02:45:23,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 02:45:23,470 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 02:45:23,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 02:45:23" (1/3) ... [2018-12-03 02:45:23,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8c7e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:45:23, skipping insertion in model container [2018-12-03 02:45:23,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 02:45:23" (2/3) ... [2018-12-03 02:45:23,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8c7e2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 02:45:23, skipping insertion in model container [2018-12-03 02:45:23,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:45:23" (3/3) ... [2018-12-03 02:45:23,472 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe_false-valid-deref.i [2018-12-03 02:45:23,478 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 02:45:23,483 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-12-03 02:45:23,491 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-12-03 02:45:23,505 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 02:45:23,505 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-03 02:45:23,505 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 02:45:23,506 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 02:45:23,506 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 02:45:23,506 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 02:45:23,506 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 02:45:23,506 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 02:45:23,514 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-12-03 02:45:23,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-03 02:45:23,519 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 02:45:23,519 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-03 02:45:23,520 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr4REQUIRES_VIOLATION, cstrncpyErr5REQUIRES_VIOLATION, cstrncpyErr0REQUIRES_VIOLATION, cstrncpyErr2REQUIRES_VIOLATION, cstrncpyErr1REQUIRES_VIOLATION, cstrncpyErr3REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-03 02:45:23,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 02:45:23,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1937036803, now seen corresponding path program 1 times [2018-12-03 02:45:23,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 02:45:23,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:45:23,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 02:45:23,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 02:45:23,554 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 02:45:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 02:45:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-03 02:45:23,603 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-03 02:45:23,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 02:45:23 BoogieIcfgContainer [2018-12-03 02:45:23,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 02:45:23,618 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-03 02:45:23,618 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-03 02:45:23,618 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-03 02:45:23,618 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 02:45:23" (3/4) ... [2018-12-03 02:45:23,620 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-03 02:45:23,643 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_c2309788-c042-4fdf-9364-16f8a7e7086e/bin-2019/utaipan/witness.graphml [2018-12-03 02:45:23,644 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-03 02:45:23,644 INFO L168 Benchmark]: Toolchain (without parser) took 505.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 950.9 MB in the beginning and 1.1 GB in the end (delta: -143.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:45:23,645 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 976.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:45:23,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 128.64 ms. Allocated memory is still 1.0 GB. Free memory was 950.9 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-03 02:45:23,645 INFO L168 Benchmark]: Boogie Procedure Inliner took 13.53 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-03 02:45:23,646 INFO L168 Benchmark]: Boogie Preprocessor took 13.99 ms. Allocated memory is still 1.0 GB. Free memory was 940.2 MB in the beginning and 937.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-03 02:45:23,646 INFO L168 Benchmark]: RCFGBuilder took 171.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 937.5 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-03 02:45:23,646 INFO L168 Benchmark]: TraceAbstraction took 149.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. [2018-12-03 02:45:23,647 INFO L168 Benchmark]: Witness Printer took 25.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-03 02:45:23,648 INFO L336 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 1.0 GB. Free memory is still 976.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 128.64 ms. Allocated memory is still 1.0 GB. Free memory was 950.9 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 13.53 ms. Allocated memory is still 1.0 GB. Free memory is still 940.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 13.99 ms. Allocated memory is still 1.0 GB. Free memory was 940.2 MB in the beginning and 937.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 171.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 937.5 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 149.30 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 11.5 GB. * Witness Printer took 25.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L21] char *s1; [L22] char *s2; [L23] int n = __VERIFIER_nondet_int(); [L24] CALL cstrncpy(s1, s2, n) VAL [\old(n)=1, s1={5:-2}, s2={4:-1}] [L4] char *dst = s1; [L5] const char *src = s2; [L6] char *us; [L7] int n2; VAL [\old(n)=1, dst={5:-2}, n=1, s1={5:-2}, s1={5:-2}, s2={4:-1}, s2={4:-1}, src={4:-1}] [L8] COND TRUE n > 0 [L9] n-- [L10] dst++ [L10] src++ - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 7 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...