./Ultimate.py --spec ../../sv-benchmarks/c/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 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/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_b7939654-32c9-4653-ba6e-e6241b28d191/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/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 0.1.23-1dbac8b [2018-10-27 04:47:00,708 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 04:47:00,709 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 04:47:00,723 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 04:47:00,724 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 04:47:00,725 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 04:47:00,726 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 04:47:00,727 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 04:47:00,728 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 04:47:00,728 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 04:47:00,729 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 04:47:00,729 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 04:47:00,733 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 04:47:00,735 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 04:47:00,741 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 04:47:00,742 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 04:47:00,743 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 04:47:00,744 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 04:47:00,745 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 04:47:00,748 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 04:47:00,749 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 04:47:00,750 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 04:47:00,751 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 04:47:00,751 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 04:47:00,752 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 04:47:00,752 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 04:47:00,753 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 04:47:00,753 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 04:47:00,756 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 04:47:00,758 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 04:47:00,759 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 04:47:00,760 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 04:47:00,761 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 04:47:00,761 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 04:47:00,762 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 04:47:00,763 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 04:47:00,764 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/bin-2019/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2018-10-27 04:47:00,781 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 04:47:00,781 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 04:47:00,782 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 04:47:00,782 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 04:47:00,783 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 04:47:00,783 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 04:47:00,783 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 04:47:00,784 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 04:47:00,784 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 04:47:00,784 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 04:47:00,784 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 04:47:00,785 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 04:47:00,785 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 04:47:00,785 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 04:47:00,785 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 04:47:00,785 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 04:47:00,785 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 04:47:00,786 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 04:47:00,786 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 04:47:00,786 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-27 04:47:00,786 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-27 04:47:00,786 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-27 04:47:00,786 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 04:47:00,786 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 04:47:00,786 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 04:47:00,787 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 04:47:00,787 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 04:47:00,787 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 04:47:00,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:47:00,787 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 04:47:00,787 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 04:47:00,787 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 04:47:00,788 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 04:47:00,788 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 04:47:00,788 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_b7939654-32c9-4653-ba6e-e6241b28d191/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 [2018-10-27 04:47:00,837 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 04:47:00,845 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 04:47:00,849 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 04:47:00,850 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 04:47:00,851 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 04:47:00,851 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/bin-2019/utaipan/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe_false-valid-deref.i [2018-10-27 04:47:00,904 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/bin-2019/utaipan/data/4d4d6b160/34c990fee05c43e58b3c98c020518567/FLAG3d0a57666 [2018-10-27 04:47:01,284 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 04:47:01,284 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe_false-valid-deref.i [2018-10-27 04:47:01,289 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/bin-2019/utaipan/data/4d4d6b160/34c990fee05c43e58b3c98c020518567/FLAG3d0a57666 [2018-10-27 04:47:01,302 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/bin-2019/utaipan/data/4d4d6b160/34c990fee05c43e58b3c98c020518567 [2018-10-27 04:47:01,305 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 04:47:01,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 04:47:01,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 04:47:01,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 04:47:01,309 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 04:47:01,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:47:01" (1/1) ... [2018-10-27 04:47:01,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@250b1434 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01, skipping insertion in model container [2018-10-27 04:47:01,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:47:01" (1/1) ... [2018-10-27 04:47:01,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 04:47:01,336 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 04:47:01,444 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:47:01,452 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 04:47:01,463 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:47:01,476 INFO L193 MainTranslator]: Completed translation [2018-10-27 04:47:01,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01 WrapperNode [2018-10-27 04:47:01,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 04:47:01,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 04:47:01,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 04:47:01,477 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 04:47:01,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01" (1/1) ... [2018-10-27 04:47:01,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01" (1/1) ... [2018-10-27 04:47:01,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 04:47:01,508 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 04:47:01,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 04:47:01,509 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 04:47:01,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01" (1/1) ... [2018-10-27 04:47:01,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01" (1/1) ... [2018-10-27 04:47:01,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01" (1/1) ... [2018-10-27 04:47:01,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01" (1/1) ... [2018-10-27 04:47:01,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01" (1/1) ... [2018-10-27 04:47:01,523 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01" (1/1) ... [2018-10-27 04:47:01,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01" (1/1) ... [2018-10-27 04:47:01,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 04:47:01,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 04:47:01,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 04:47:01,526 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 04:47:01,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/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 [2018-10-27 04:47:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-10-27 04:47:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-10-27 04:47:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 04:47:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 04:47:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 04:47:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 04:47:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 04:47:01,630 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 04:47:02,068 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 04:47:02,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:47:02 BoogieIcfgContainer [2018-10-27 04:47:02,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 04:47:02,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 04:47:02,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 04:47:02,072 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 04:47:02,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:47:01" (1/3) ... [2018-10-27 04:47:02,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b037c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:47:02, skipping insertion in model container [2018-10-27 04:47:02,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:47:01" (2/3) ... [2018-10-27 04:47:02,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b037c13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:47:02, skipping insertion in model container [2018-10-27 04:47:02,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:47:02" (3/3) ... [2018-10-27 04:47:02,077 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe_false-valid-deref.i [2018-10-27 04:47:02,086 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 04:47:02,093 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-10-27 04:47:02,110 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-10-27 04:47:02,140 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 04:47:02,141 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-27 04:47:02,141 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 04:47:02,141 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 04:47:02,141 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 04:47:02,141 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 04:47:02,141 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 04:47:02,141 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 04:47:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-10-27 04:47:02,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-27 04:47:02,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:47:02,172 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:47:02,174 INFO L424 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, cstrncpyErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, cstrncpyErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, cstrncpyErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, cstrncpyErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, cstrncpyErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-10-27 04:47:02,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:47:02,184 INFO L82 PathProgramCache]: Analyzing trace with hash -350649336, now seen corresponding path program 1 times [2018-10-27 04:47:02,186 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 04:47:02,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:47:02,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:47:02,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:47:02,232 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 04:47:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 04:47:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 04:47:02,326 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 04:47:02,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:47:02 BoogieIcfgContainer [2018-10-27 04:47:02,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 04:47:02,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 04:47:02,359 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 04:47:02,359 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 04:47:02,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:47:02" (3/4) ... [2018-10-27 04:47:02,362 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 04:47:02,399 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_b7939654-32c9-4653-ba6e-e6241b28d191/bin-2019/utaipan/witness.graphml [2018-10-27 04:47:02,399 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 04:47:02,400 INFO L168 Benchmark]: Toolchain (without parser) took 1095.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.9 MB). Free memory was 959.8 MB in the beginning and 1.2 GB in the end (delta: -203.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:47:02,402 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:47:02,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.53 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 947.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. [2018-10-27 04:47:02,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.55 ms. Allocated memory is still 1.0 GB. Free memory was 947.6 MB in the beginning and 944.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:47:02,403 INFO L168 Benchmark]: Boogie Preprocessor took 17.26 ms. Allocated memory is still 1.0 GB. Free memory is still 944.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:47:02,403 INFO L168 Benchmark]: RCFGBuilder took 542.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.9 MB). Free memory was 944.9 MB in the beginning and 1.2 GB in the end (delta: -235.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. [2018-10-27 04:47:02,404 INFO L168 Benchmark]: TraceAbstraction took 289.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. [2018-10-27 04:47:02,405 INFO L168 Benchmark]: Witness Printer took 40.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. [2018-10-27 04:47:02,410 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.53 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 947.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.55 ms. Allocated memory is still 1.0 GB. Free memory was 947.6 MB in the beginning and 944.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.26 ms. Allocated memory is still 1.0 GB. Free memory is still 944.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 542.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.9 MB). Free memory was 944.9 MB in the beginning and 1.2 GB in the end (delta: -235.5 MB). Peak memory consumption was 23.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 289.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 11.5 GB. * Witness Printer took 40.47 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: 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) [L4] char *dst = s1; [L5] const char *src = s2; [L6] char *us; [L7] int n2; [L8] COND TRUE n > 0 [L9] n-- [L10] dst++ [L10] src++ - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 7 error locations. UNSAFE Result, 0.2s 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=35occurred 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, 11 NumberOfCodeBlocks, 11 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...