./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_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer --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 Automizer --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 [2018-12-08 19:49:33,904 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 19:49:33,906 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 19:49:33,914 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 19:49:33,914 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 19:49:33,914 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 19:49:33,915 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 19:49:33,916 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 19:49:33,917 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 19:49:33,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 19:49:33,919 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 19:49:33,919 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 19:49:33,919 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 19:49:33,920 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 19:49:33,921 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 19:49:33,921 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 19:49:33,922 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 19:49:33,923 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 19:49:33,924 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 19:49:33,925 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 19:49:33,926 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 19:49:33,926 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 19:49:33,928 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 19:49:33,928 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 19:49:33,928 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 19:49:33,929 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 19:49:33,929 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 19:49:33,930 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 19:49:33,930 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 19:49:33,931 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 19:49:33,931 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 19:49:33,931 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 19:49:33,932 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 19:49:33,932 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 19:49:33,932 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 19:49:33,933 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 19:49:33,933 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-12-08 19:49:33,940 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 19:49:33,941 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 19:49:33,941 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-08 19:49:33,941 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-08 19:49:33,942 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 19:49:33,942 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 19:49:33,942 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 19:49:33,942 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 19:49:33,942 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 19:49:33,943 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 19:49:33,943 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 19:49:33,943 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 19:49:33,943 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 19:49:33,943 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-12-08 19:49:33,943 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-12-08 19:49:33,943 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-12-08 19:49:33,944 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-08 19:49:33,944 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 19:49:33,944 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 19:49:33,944 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 19:49:33,944 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 19:49:33,944 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-08 19:49:33,945 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-08 19:49:33,945 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-08 19:49:33,945 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 19:49:33,945 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-08 19:49:33,945 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 19:49:33,945 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-08 19:49:33,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in 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_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer 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 -> Automizer 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 [2018-12-08 19:49:33,968 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 19:49:33,974 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 19:49:33,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 19:49:33,977 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 19:49:33,977 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 19:49:33,978 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrncpy_unsafe_false-valid-deref.i [2018-12-08 19:49:34,012 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/data/87e27b745/53fe27bc9aa54708b241513fb84ae39d/FLAG66748067a [2018-12-08 19:49:34,380 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 19:49:34,381 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/sv-benchmarks/c/array-memsafety/cstrncpy_unsafe_false-valid-deref.i [2018-12-08 19:49:34,384 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/data/87e27b745/53fe27bc9aa54708b241513fb84ae39d/FLAG66748067a [2018-12-08 19:49:34,392 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/data/87e27b745/53fe27bc9aa54708b241513fb84ae39d [2018-12-08 19:49:34,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 19:49:34,394 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-12-08 19:49:34,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 19:49:34,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 19:49:34,397 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 19:49:34,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:49:34" (1/1) ... [2018-12-08 19:49:34,399 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 08.12 07:49:34, skipping insertion in model container [2018-12-08 19:49:34,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 07:49:34" (1/1) ... [2018-12-08 19:49:34,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 19:49:34,411 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 19:49:34,498 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:49:34,504 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 19:49:34,513 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 19:49:34,521 INFO L195 MainTranslator]: Completed translation [2018-12-08 19:49:34,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:49:34 WrapperNode [2018-12-08 19:49:34,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 19:49:34,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 19:49:34,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 19:49:34,522 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 19:49:34,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:49:34" (1/1) ... [2018-12-08 19:49:34,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:49:34" (1/1) ... [2018-12-08 19:49:34,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:49:34" (1/1) ... [2018-12-08 19:49:34,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:49:34" (1/1) ... [2018-12-08 19:49:34,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:49:34" (1/1) ... [2018-12-08 19:49:34,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:49:34" (1/1) ... [2018-12-08 19:49:34,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:49:34" (1/1) ... [2018-12-08 19:49:34,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 19:49:34,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 19:49:34,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 19:49:34,543 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 19:49:34,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:49:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/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 [2018-12-08 19:49:34,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-08 19:49:34,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 19:49:34,603 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncpy [2018-12-08 19:49:34,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-08 19:49:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-12-08 19:49:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncpy [2018-12-08 19:49:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-08 19:49:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-12-08 19:49:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-08 19:49:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-08 19:49:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 19:49:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-08 19:49:34,728 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 19:49:34,729 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-08 19:49:34,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:49:34 BoogieIcfgContainer [2018-12-08 19:49:34,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 19:49:34,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-08 19:49:34,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-08 19:49:34,731 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-08 19:49:34,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.12 07:49:34" (1/3) ... [2018-12-08 19:49:34,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f70b754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 07:49:34, skipping insertion in model container [2018-12-08 19:49:34,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 07:49:34" (2/3) ... [2018-12-08 19:49:34,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f70b754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.12 07:49:34, skipping insertion in model container [2018-12-08 19:49:34,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:49:34" (3/3) ... [2018-12-08 19:49:34,734 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncpy_unsafe_false-valid-deref.i [2018-12-08 19:49:34,740 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-08 19:49:34,744 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-12-08 19:49:34,754 INFO L257 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2018-12-08 19:49:34,769 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 19:49:34,770 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-08 19:49:34,770 INFO L383 AbstractCegarLoop]: Hoare is false [2018-12-08 19:49:34,770 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-08 19:49:34,770 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 19:49:34,770 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 19:49:34,770 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-08 19:49:34,770 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 19:49:34,770 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-08 19:49:34,781 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-12-08 19:49:34,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-12-08 19:49:34,787 INFO L394 BasicCegarLoop]: Found error trace [2018-12-08 19:49:34,787 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 19:49:34,789 INFO L423 AbstractCegarLoop]: === Iteration 1 === [cstrncpyErr3REQUIRES_VIOLATION, cstrncpyErr2REQUIRES_VIOLATION, cstrncpyErr4REQUIRES_VIOLATION, cstrncpyErr0REQUIRES_VIOLATION, cstrncpyErr5REQUIRES_VIOLATION, cstrncpyErr1REQUIRES_VIOLATION, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2018-12-08 19:49:34,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 19:49:34,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1937036803, now seen corresponding path program 1 times [2018-12-08 19:49:34,794 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 19:49:34,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 19:49:34,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:49:34,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 19:49:34,824 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 19:49:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:49:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 19:49:34,876 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-08 19:49:34,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.12 07:49:34 BoogieIcfgContainer [2018-12-08 19:49:34,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-08 19:49:34,889 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 19:49:34,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 19:49:34,890 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 19:49:34,890 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 07:49:34" (3/4) ... [2018-12-08 19:49:34,892 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-08 19:49:34,916 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_67185cd6-f4e2-4ddb-8f06-8265d30481d5/bin-2019/uautomizer/witness.graphml [2018-12-08 19:49:34,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 19:49:34,917 INFO L168 Benchmark]: Toolchain (without parser) took 523.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 954.4 MB in the beginning and 1.1 GB in the end (delta: -147.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:49:34,918 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:49:34,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 127.26 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 19:49:34,918 INFO L168 Benchmark]: Boogie Preprocessor took 21.00 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 19:49:34,918 INFO L168 Benchmark]: RCFGBuilder took 185.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. [2018-12-08 19:49:34,919 INFO L168 Benchmark]: TraceAbstraction took 159.84 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2018-12-08 19:49:34,919 INFO L168 Benchmark]: Witness Printer took 27.01 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-12-08 19:49:34,920 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 127.26 ms. Allocated memory is still 1.0 GB. Free memory was 954.4 MB in the beginning and 943.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.00 ms. Allocated memory is still 1.0 GB. Free memory is still 943.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 185.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 943.6 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 159.84 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: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * Witness Printer took 27.01 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: 3.4 MB). Peak memory consumption was 3.4 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...