./Ultimate.py --spec ../../sv-benchmarks/c/MemSafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrncat_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_d241a035-f4b5-4738-b638-33767bdd8f94/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/bin-2019/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/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 ead5f421f9d611f4b4a72e6a7fba37c936b2240c ....................................................................................................................................................................................................................................... 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 04:45:10,940 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 04:45:10,942 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 04:45:10,952 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 04:45:10,952 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 04:45:10,952 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 04:45:10,956 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 04:45:10,957 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 04:45:10,958 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 04:45:10,959 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 04:45:10,959 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 04:45:10,959 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 04:45:10,960 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 04:45:10,961 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 04:45:10,963 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 04:45:10,963 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 04:45:10,964 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 04:45:10,965 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 04:45:10,966 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 04:45:10,967 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 04:45:10,968 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 04:45:10,969 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 04:45:10,975 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 04:45:10,977 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 04:45:10,977 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 04:45:10,978 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 04:45:10,978 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 04:45:10,979 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 04:45:10,979 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 04:45:10,980 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 04:45:10,980 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 04:45:10,980 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 04:45:10,981 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 04:45:10,981 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 04:45:10,984 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 04:45:10,986 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 04:45:10,986 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-27 04:45:10,998 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 04:45:11,000 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 04:45:11,001 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 04:45:11,002 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 04:45:11,002 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 04:45:11,002 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 04:45:11,002 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 04:45:11,003 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 04:45:11,003 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 04:45:11,003 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 04:45:11,003 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 04:45:11,004 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-27 04:45:11,004 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-27 04:45:11,004 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-27 04:45:11,004 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 04:45:11,005 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 04:45:11,005 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 04:45:11,005 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 04:45:11,005 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 04:45:11,005 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 04:45:11,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 04:45:11,005 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 04:45:11,005 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 04:45:11,006 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 04:45:11,006 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 04:45:11,006 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_d241a035-f4b5-4738-b638-33767bdd8f94/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 -> ead5f421f9d611f4b4a72e6a7fba37c936b2240c [2018-10-27 04:45:11,049 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 04:45:11,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 04:45:11,069 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 04:45:11,070 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 04:45:11,071 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 04:45:11,071 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-10-27 04:45:11,118 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/bin-2019/uautomizer/data/06a973670/c257013fe9bd44df83f8576cb7d2fdfb/FLAG49c9b96b0 [2018-10-27 04:45:11,491 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 04:45:11,492 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/sv-benchmarks/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-10-27 04:45:11,496 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/bin-2019/uautomizer/data/06a973670/c257013fe9bd44df83f8576cb7d2fdfb/FLAG49c9b96b0 [2018-10-27 04:45:11,507 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/bin-2019/uautomizer/data/06a973670/c257013fe9bd44df83f8576cb7d2fdfb [2018-10-27 04:45:11,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 04:45:11,510 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 04:45:11,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:11,511 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 04:45:11,514 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 04:45:11,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:11" (1/1) ... [2018-10-27 04:45:11,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5008cc06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:11, skipping insertion in model container [2018-10-27 04:45:11,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:45:11" (1/1) ... [2018-10-27 04:45:11,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 04:45:11,542 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 04:45:11,657 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:11,665 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 04:45:11,676 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 04:45:11,689 INFO L193 MainTranslator]: Completed translation [2018-10-27 04:45:11,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:11 WrapperNode [2018-10-27 04:45:11,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 04:45:11,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 04:45:11,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 04:45:11,690 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 04:45:11,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:11" (1/1) ... [2018-10-27 04:45:11,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:11" (1/1) ... [2018-10-27 04:45:11,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:11" (1/1) ... [2018-10-27 04:45:11,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:11" (1/1) ... [2018-10-27 04:45:11,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:11" (1/1) ... [2018-10-27 04:45:11,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:11" (1/1) ... [2018-10-27 04:45:11,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:11" (1/1) ... [2018-10-27 04:45:11,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 04:45:11,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 04:45:11,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 04:45:11,719 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 04:45:11,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/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 [2018-10-27 04:45:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 04:45:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 04:45:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-10-27 04:45:11,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 04:45:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-10-27 04:45:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2018-10-27 04:45:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-10-27 04:45:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-10-27 04:45:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 04:45:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 04:45:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 04:45:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-10-27 04:45:11,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-10-27 04:45:12,377 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 04:45:12,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:12 BoogieIcfgContainer [2018-10-27 04:45:12,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 04:45:12,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 04:45:12,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 04:45:12,382 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 04:45:12,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:45:11" (1/3) ... [2018-10-27 04:45:12,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437b506c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:12, skipping insertion in model container [2018-10-27 04:45:12,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:45:11" (2/3) ... [2018-10-27 04:45:12,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437b506c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:45:12, skipping insertion in model container [2018-10-27 04:45:12,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:12" (3/3) ... [2018-10-27 04:45:12,386 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe_false-valid-deref.i [2018-10-27 04:45:12,395 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 04:45:12,402 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-10-27 04:45:12,415 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-10-27 04:45:12,437 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 04:45:12,438 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 04:45:12,438 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-27 04:45:12,438 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 04:45:12,438 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 04:45:12,438 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 04:45:12,438 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 04:45:12,438 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 04:45:12,439 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 04:45:12,452 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-10-27 04:45:12,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-27 04:45:12,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 04:45:12,462 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 04:45:12,463 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cstrncatErr2REQUIRES_VIOLATION, cstrncatErr7REQUIRES_VIOLATION, cstrncatErr8REQUIRES_VIOLATION, cstrncatErr3REQUIRES_VIOLATION, cstrncatErr4REQUIRES_VIOLATION, cstrncatErr9REQUIRES_VIOLATION, cstrncatErr0REQUIRES_VIOLATION, cstrncatErr5REQUIRES_VIOLATION, cstrncatErr6REQUIRES_VIOLATION, cstrncatErr1REQUIRES_VIOLATION]=== [2018-10-27 04:45:12,469 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 04:45:12,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1867218439, now seen corresponding path program 1 times [2018-10-27 04:45:12,471 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 04:45:12,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 04:45:12,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:12,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 04:45:12,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 04:45:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 04:45:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 04:45:12,580 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-27 04:45:12,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:45:12 BoogieIcfgContainer [2018-10-27 04:45:12,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 04:45:12,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 04:45:12,603 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 04:45:12,603 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 04:45:12,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:45:12" (3/4) ... [2018-10-27 04:45:12,606 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-10-27 04:45:12,640 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d241a035-f4b5-4738-b638-33767bdd8f94/bin-2019/uautomizer/witness.graphml [2018-10-27 04:45:12,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 04:45:12,641 INFO L168 Benchmark]: Toolchain (without parser) took 1131.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.5 MB). Free memory was 958.5 MB in the beginning and 1.2 GB in the end (delta: -217.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:12,642 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:12,643 INFO L168 Benchmark]: CACSL2BoogieTranslator took 178.72 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:12,643 INFO L168 Benchmark]: Boogie Preprocessor took 29.08 ms. Allocated memory is still 1.0 GB. Free memory was 947.7 MB in the beginning and 942.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:12,644 INFO L168 Benchmark]: RCFGBuilder took 658.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.5 MB). Free memory was 942.4 MB in the beginning and 1.2 GB in the end (delta: -246.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:12,644 INFO L168 Benchmark]: TraceAbstraction took 224.34 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: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. [2018-10-27 04:45:12,645 INFO L168 Benchmark]: Witness Printer took 37.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 04:45:12,648 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 178.72 ms. Allocated memory is still 1.0 GB. Free memory was 958.5 MB in the beginning and 947.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 29.08 ms. Allocated memory is still 1.0 GB. Free memory was 947.7 MB in the beginning and 942.4 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 658.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.5 MB). Free memory was 942.4 MB in the beginning and 1.2 GB in the end (delta: -246.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 224.34 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: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 11.5 GB. * Witness Printer took 37.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L16] char *s1; [L17] char *s2; [L18] int n = __VERIFIER_nondet_int(); [L19] CALL cstrncat(s1, s2, n) VAL [\old(n)=0, s1={5:7}, s2={6:2}] [L4] char *s = s1; VAL [\old(n)=0, n=0, s={5:7}, s1={5:7}, s1={5:7}, s2={6:2}, s2={6:2}] [L5] FCALL \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 40 locations, 11 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=40occurred 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...