./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-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 aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/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_113a274e-c91e-481c-94f3-483894ffee2f/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/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-aa41828 [2018-11-23 01:48:29,120 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 01:48:29,121 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 01:48:29,130 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 01:48:29,130 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 01:48:29,131 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 01:48:29,132 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 01:48:29,133 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 01:48:29,134 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 01:48:29,135 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 01:48:29,136 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 01:48:29,136 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 01:48:29,137 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 01:48:29,138 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 01:48:29,139 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 01:48:29,139 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 01:48:29,140 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 01:48:29,142 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 01:48:29,143 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 01:48:29,144 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 01:48:29,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 01:48:29,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 01:48:29,148 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 01:48:29,148 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 01:48:29,148 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 01:48:29,149 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 01:48:29,150 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 01:48:29,150 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 01:48:29,151 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 01:48:29,152 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 01:48:29,152 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 01:48:29,152 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 01:48:29,153 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 01:48:29,153 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 01:48:29,153 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 01:48:29,154 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 01:48:29,154 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/bin-2019/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-23 01:48:29,163 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 01:48:29,163 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 01:48:29,164 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 01:48:29,164 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 01:48:29,165 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 01:48:29,165 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 01:48:29,165 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 01:48:29,165 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 01:48:29,165 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 01:48:29,166 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 01:48:29,166 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 01:48:29,166 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 01:48:29,166 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 01:48:29,166 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-23 01:48:29,166 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-23 01:48:29,166 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-23 01:48:29,167 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 01:48:29,167 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 01:48:29,167 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 01:48:29,167 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 01:48:29,167 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 01:48:29,167 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 01:48:29,168 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 01:48:29,168 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 01:48:29,168 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 01:48:29,168 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 01:48:29,168 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 01:48:29,168 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 01:48:29,168 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_113a274e-c91e-481c-94f3-483894ffee2f/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 [2018-11-23 01:48:29,194 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 01:48:29,204 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 01:48:29,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 01:48:29,208 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 01:48:29,209 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 01:48:29,209 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/bin-2019/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-11-23 01:48:29,252 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/bin-2019/uautomizer/data/952584e8c/350d328d687a4b5dac43b7d90e840d80/FLAG2c74f8c5a [2018-11-23 01:48:29,662 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 01:48:29,663 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/sv-benchmarks/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-11-23 01:48:29,667 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/bin-2019/uautomizer/data/952584e8c/350d328d687a4b5dac43b7d90e840d80/FLAG2c74f8c5a [2018-11-23 01:48:29,678 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/bin-2019/uautomizer/data/952584e8c/350d328d687a4b5dac43b7d90e840d80 [2018-11-23 01:48:29,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 01:48:29,683 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-23 01:48:29,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 01:48:29,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 01:48:29,688 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 01:48:29,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:29" (1/1) ... [2018-11-23 01:48:29,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4044db79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:29, skipping insertion in model container [2018-11-23 01:48:29,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:48:29" (1/1) ... [2018-11-23 01:48:29,698 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 01:48:29,713 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 01:48:29,832 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:48:29,838 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 01:48:29,847 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:48:29,856 INFO L195 MainTranslator]: Completed translation [2018-11-23 01:48:29,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:29 WrapperNode [2018-11-23 01:48:29,856 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 01:48:29,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 01:48:29,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 01:48:29,857 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 01:48:29,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:29" (1/1) ... [2018-11-23 01:48:29,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:29" (1/1) ... [2018-11-23 01:48:29,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:29" (1/1) ... [2018-11-23 01:48:29,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:29" (1/1) ... [2018-11-23 01:48:29,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:29" (1/1) ... [2018-11-23 01:48:29,884 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:29" (1/1) ... [2018-11-23 01:48:29,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:29" (1/1) ... [2018-11-23 01:48:29,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 01:48:29,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 01:48:29,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 01:48:29,887 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 01:48:29,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/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 [2018-11-23 01:48:29,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 01:48:29,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 01:48:29,969 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-11-23 01:48:29,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 01:48:29,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-23 01:48:29,969 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2018-11-23 01:48:29,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 01:48:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 01:48:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 01:48:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 01:48:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 01:48:29,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 01:48:30,154 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 01:48:30,154 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-23 01:48:30,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:30 BoogieIcfgContainer [2018-11-23 01:48:30,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 01:48:30,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 01:48:30,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 01:48:30,158 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 01:48:30,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:48:29" (1/3) ... [2018-11-23 01:48:30,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378c2aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:30, skipping insertion in model container [2018-11-23 01:48:30,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:48:29" (2/3) ... [2018-11-23 01:48:30,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378c2aaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:48:30, skipping insertion in model container [2018-11-23 01:48:30,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:30" (3/3) ... [2018-11-23 01:48:30,162 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe_false-valid-deref.i [2018-11-23 01:48:30,169 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 01:48:30,176 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-11-23 01:48:30,191 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-11-23 01:48:30,218 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 01:48:30,219 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 01:48:30,219 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-23 01:48:30,219 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 01:48:30,219 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 01:48:30,219 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 01:48:30,219 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 01:48:30,219 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 01:48:30,219 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 01:48:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-11-23 01:48:30,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 01:48:30,245 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:48:30,246 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:48:30,248 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cstrncatErr3REQUIRES_VIOLATION, cstrncatErr9REQUIRES_VIOLATION, cstrncatErr8REQUIRES_VIOLATION, cstrncatErr7REQUIRES_VIOLATION, cstrncatErr2REQUIRES_VIOLATION, cstrncatErr0REQUIRES_VIOLATION, cstrncatErr1REQUIRES_VIOLATION, cstrncatErr6REQUIRES_VIOLATION, cstrncatErr4REQUIRES_VIOLATION, cstrncatErr5REQUIRES_VIOLATION]=== [2018-11-23 01:48:30,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:48:30,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1122182536, now seen corresponding path program 1 times [2018-11-23 01:48:30,256 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 01:48:30,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 01:48:30,306 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:48:30,307 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:48:30,307 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:48:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:48:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 01:48:30,371 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); VAL [|#NULL.base|=8, |#NULL.offset|=3, |old(#NULL.base)|=8, |old(#NULL.offset)|=3] [?] #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; VAL [|#NULL.base|=0, |#NULL.offset|=0, |old(#NULL.base)|=8, |old(#NULL.offset)|=3] [?] assume true; VAL [|#NULL.base|=0, |#NULL.offset|=0, |old(#NULL.base)|=8, |old(#NULL.offset)|=3] [?] RET #66#return; VAL [|#NULL.base|=0, |#NULL.offset|=0] [?] CALL call #t~ret10 := main(); VAL [|#NULL.base|=0, |#NULL.offset|=0] [?] havoc ~s1~0.base, ~s1~0.offset;havoc ~s2~0.base, ~s2~0.offset;assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647;~n~0 := #t~nondet8;havoc #t~nondet8; VAL [main_~n~0=0, |#NULL.base|=0, |#NULL.offset|=0] [?] CALL call #t~ret9.base, #t~ret9.offset := cstrncat(~s1~0.base, ~s1~0.offset, ~s2~0.base, ~s2~0.offset, ~n~0); VAL [|#NULL.base|=0, |#NULL.offset|=0, |cstrncat_#in~n|=0, |cstrncat_#in~s1.base|=6, |cstrncat_#in~s1.offset|=5, |cstrncat_#in~s2.base|=7, |cstrncat_#in~s2.offset|=2] [?] ~s1.base, ~s1.offset := #in~s1.base, #in~s1.offset;~s2.base, ~s2.offset := #in~s2.base, #in~s2.offset;~n := #in~n;~s~0.base, ~s~0.offset := ~s1.base, ~s1.offset; VAL [cstrncat_~n=0, cstrncat_~s1.base=6, cstrncat_~s1.offset=5, cstrncat_~s2.base=7, cstrncat_~s2.offset=2, cstrncat_~s~0.base=6, cstrncat_~s~0.offset=5, |#NULL.base|=0, |#NULL.offset|=0, |cstrncat_#in~n|=0, |cstrncat_#in~s1.base|=6, |cstrncat_#in~s1.offset|=5, |cstrncat_#in~s2.base|=7, |cstrncat_#in~s2.offset|=2] [?] assume !(1 == #valid[~s~0.base]); VAL [cstrncat_~n=0, cstrncat_~s1.base=6, cstrncat_~s1.offset=5, cstrncat_~s2.base=7, cstrncat_~s2.offset=2, cstrncat_~s~0.base=6, cstrncat_~s~0.offset=5, |#NULL.base|=0, |#NULL.offset|=0, |cstrncat_#in~n|=0, |cstrncat_#in~s1.base|=6, |cstrncat_#in~s1.offset|=5, |cstrncat_#in~s2.base|=7, |cstrncat_#in~s2.offset|=2] [?] CALL call ULTIMATE.init(); VAL [#NULL.base=8, #NULL.offset=3, old(#NULL.base)=8, old(#NULL.offset)=3] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=8, old(#NULL.offset)=3] [?] ensures true; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=8, old(#NULL.offset)=3] [?] RET call ULTIMATE.init(); VAL [#NULL.base=0, #NULL.offset=0] [?] CALL call #t~ret10 := main(); VAL [#NULL.base=0, #NULL.offset=0] [L16] havoc ~s1~0.base, ~s1~0.offset; [L17] havoc ~s2~0.base, ~s2~0.offset; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; VAL [#NULL.base=0, #NULL.offset=0, ~n~0=0] [L19] CALL call #t~ret9.base, #t~ret9.offset := cstrncat(~s1~0.base, ~s1~0.offset, ~s2~0.base, ~s2~0.offset, ~n~0); VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0] [L2-L14] ~s1.base, ~s1.offset := #in~s1.base, #in~s1.offset; [L2-L14] ~s2.base, ~s2.offset := #in~s2.base, #in~s2.offset; [L2-L14] ~n := #in~n; [L4] ~s~0.base, ~s~0.offset := ~s1.base, ~s1.offset; VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0, ~n=0, ~s1.base=6, ~s1.offset=5, ~s2.base=7, ~s2.offset=2, ~s~0.base=6, ~s~0.offset=5] [L5] call #t~mem0 := read~int(~s~0.base, ~s~0.offset, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0, ~n=0, ~s1.base=6, ~s1.offset=5, ~s2.base=7, ~s2.offset=2, ~s~0.base=6, ~s~0.offset=5] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); VAL [#NULL.base=8, #NULL.offset=3, old(#NULL.base)=8, old(#NULL.offset)=3] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=8, old(#NULL.offset)=3] [?] ensures true; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=8, old(#NULL.offset)=3] [?] RET call ULTIMATE.init(); VAL [#NULL.base=0, #NULL.offset=0] [?] CALL call #t~ret10 := main(); VAL [#NULL.base=0, #NULL.offset=0] [L16] havoc ~s1~0.base, ~s1~0.offset; [L17] havoc ~s2~0.base, ~s2~0.offset; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; VAL [#NULL.base=0, #NULL.offset=0, ~n~0=0] [L19] CALL call #t~ret9.base, #t~ret9.offset := cstrncat(~s1~0.base, ~s1~0.offset, ~s2~0.base, ~s2~0.offset, ~n~0); VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0] [L2-L14] ~s1.base, ~s1.offset := #in~s1.base, #in~s1.offset; [L2-L14] ~s2.base, ~s2.offset := #in~s2.base, #in~s2.offset; [L2-L14] ~n := #in~n; [L4] ~s~0.base, ~s~0.offset := ~s1.base, ~s1.offset; VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0, ~n=0, ~s1.base=6, ~s1.offset=5, ~s2.base=7, ~s2.offset=2, ~s~0.base=6, ~s~0.offset=5] [L5] call #t~mem0 := read~int(~s~0.base, ~s~0.offset, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0, ~n=0, ~s1.base=6, ~s1.offset=5, ~s2.base=7, ~s2.offset=2, ~s~0.base=6, ~s~0.offset=5] [?] CALL call ULTIMATE.init(); VAL [#NULL!base=8, #NULL!offset=3, old(#NULL!base)=8, old(#NULL!offset)=3] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; VAL [#NULL!base=0, #NULL!offset=0, old(#NULL!base)=8, old(#NULL!offset)=3] [?] RET call ULTIMATE.init(); VAL [#NULL!base=0, #NULL!offset=0] [?] CALL call #t~ret10 := main(); VAL [#NULL!base=0, #NULL!offset=0] [L16] havoc ~s1~0; [L17] havoc ~s2~0; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; VAL [#NULL!base=0, #NULL!offset=0, ~n~0=0] [L19] CALL call #t~ret9 := cstrncat(~s1~0, ~s2~0, ~n~0); VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0] [L2-L14] ~s1 := #in~s1; [L2-L14] ~s2 := #in~s2; [L2-L14] ~n := #in~n; [L4] ~s~0 := ~s1; VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0, ~n=0, ~s1!base=6, ~s1!offset=5, ~s2!base=7, ~s2!offset=2, ~s~0!base=6, ~s~0!offset=5] [L5] FCALL call #t~mem0 := read~int(~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0, ~n=0, ~s1!base=6, ~s1!offset=5, ~s2!base=7, ~s2!offset=2, ~s~0!base=6, ~s~0!offset=5] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); VAL [#NULL!base=8, #NULL!offset=3, old(#NULL!base)=8, old(#NULL!offset)=3] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; VAL [#NULL!base=0, #NULL!offset=0, old(#NULL!base)=8, old(#NULL!offset)=3] [?] RET call ULTIMATE.init(); VAL [#NULL!base=0, #NULL!offset=0] [?] CALL call #t~ret10 := main(); VAL [#NULL!base=0, #NULL!offset=0] [L16] havoc ~s1~0; [L17] havoc ~s2~0; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; VAL [#NULL!base=0, #NULL!offset=0, ~n~0=0] [L19] CALL call #t~ret9 := cstrncat(~s1~0, ~s2~0, ~n~0); VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0] [L2-L14] ~s1 := #in~s1; [L2-L14] ~s2 := #in~s2; [L2-L14] ~n := #in~n; [L4] ~s~0 := ~s1; VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0, ~n=0, ~s1!base=6, ~s1!offset=5, ~s2!base=7, ~s2!offset=2, ~s~0!base=6, ~s~0!offset=5] [L5] FCALL call #t~mem0 := read~int(~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0, ~n=0, ~s1!base=6, ~s1!offset=5, ~s2!base=7, ~s2!offset=2, ~s~0!base=6, ~s~0!offset=5] [L16] char *s1; [L17] char *s2; [L18] int n = __VERIFIER_nondet_int(); [L19] CALL cstrncat(s1, s2, n) VAL [\old(n)=0, s1={6:5}, s2={7:2}] [L4] char *s = s1; VAL [\old(n)=0, n=0, s={6:5}, s1={6:5}, s1={6:5}, s2={7:2}, s2={7:2}] [L5] \read(*s) ----- [2018-11-23 01:48:30,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:48:30 BoogieIcfgContainer [2018-11-23 01:48:30,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 01:48:30,394 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 01:48:30,394 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 01:48:30,394 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 01:48:30,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:48:30" (3/4) ... [2018-11-23 01:48:30,396 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); VAL [|#NULL.base|=8, |#NULL.offset|=3, |old(#NULL.base)|=8, |old(#NULL.offset)|=3] [?] #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; VAL [|#NULL.base|=0, |#NULL.offset|=0, |old(#NULL.base)|=8, |old(#NULL.offset)|=3] [?] assume true; VAL [|#NULL.base|=0, |#NULL.offset|=0, |old(#NULL.base)|=8, |old(#NULL.offset)|=3] [?] RET #66#return; VAL [|#NULL.base|=0, |#NULL.offset|=0] [?] CALL call #t~ret10 := main(); VAL [|#NULL.base|=0, |#NULL.offset|=0] [?] havoc ~s1~0.base, ~s1~0.offset;havoc ~s2~0.base, ~s2~0.offset;assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647;~n~0 := #t~nondet8;havoc #t~nondet8; VAL [main_~n~0=0, |#NULL.base|=0, |#NULL.offset|=0] [?] CALL call #t~ret9.base, #t~ret9.offset := cstrncat(~s1~0.base, ~s1~0.offset, ~s2~0.base, ~s2~0.offset, ~n~0); VAL [|#NULL.base|=0, |#NULL.offset|=0, |cstrncat_#in~n|=0, |cstrncat_#in~s1.base|=6, |cstrncat_#in~s1.offset|=5, |cstrncat_#in~s2.base|=7, |cstrncat_#in~s2.offset|=2] [?] ~s1.base, ~s1.offset := #in~s1.base, #in~s1.offset;~s2.base, ~s2.offset := #in~s2.base, #in~s2.offset;~n := #in~n;~s~0.base, ~s~0.offset := ~s1.base, ~s1.offset; VAL [cstrncat_~n=0, cstrncat_~s1.base=6, cstrncat_~s1.offset=5, cstrncat_~s2.base=7, cstrncat_~s2.offset=2, cstrncat_~s~0.base=6, cstrncat_~s~0.offset=5, |#NULL.base|=0, |#NULL.offset|=0, |cstrncat_#in~n|=0, |cstrncat_#in~s1.base|=6, |cstrncat_#in~s1.offset|=5, |cstrncat_#in~s2.base|=7, |cstrncat_#in~s2.offset|=2] [?] assume !(1 == #valid[~s~0.base]); VAL [cstrncat_~n=0, cstrncat_~s1.base=6, cstrncat_~s1.offset=5, cstrncat_~s2.base=7, cstrncat_~s2.offset=2, cstrncat_~s~0.base=6, cstrncat_~s~0.offset=5, |#NULL.base|=0, |#NULL.offset|=0, |cstrncat_#in~n|=0, |cstrncat_#in~s1.base|=6, |cstrncat_#in~s1.offset|=5, |cstrncat_#in~s2.base|=7, |cstrncat_#in~s2.offset|=2] [?] CALL call ULTIMATE.init(); VAL [#NULL.base=8, #NULL.offset=3, old(#NULL.base)=8, old(#NULL.offset)=3] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=8, old(#NULL.offset)=3] [?] ensures true; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=8, old(#NULL.offset)=3] [?] RET call ULTIMATE.init(); VAL [#NULL.base=0, #NULL.offset=0] [?] CALL call #t~ret10 := main(); VAL [#NULL.base=0, #NULL.offset=0] [L16] havoc ~s1~0.base, ~s1~0.offset; [L17] havoc ~s2~0.base, ~s2~0.offset; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; VAL [#NULL.base=0, #NULL.offset=0, ~n~0=0] [L19] CALL call #t~ret9.base, #t~ret9.offset := cstrncat(~s1~0.base, ~s1~0.offset, ~s2~0.base, ~s2~0.offset, ~n~0); VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0] [L2-L14] ~s1.base, ~s1.offset := #in~s1.base, #in~s1.offset; [L2-L14] ~s2.base, ~s2.offset := #in~s2.base, #in~s2.offset; [L2-L14] ~n := #in~n; [L4] ~s~0.base, ~s~0.offset := ~s1.base, ~s1.offset; VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0, ~n=0, ~s1.base=6, ~s1.offset=5, ~s2.base=7, ~s2.offset=2, ~s~0.base=6, ~s~0.offset=5] [L5] call #t~mem0 := read~int(~s~0.base, ~s~0.offset, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0, ~n=0, ~s1.base=6, ~s1.offset=5, ~s2.base=7, ~s2.offset=2, ~s~0.base=6, ~s~0.offset=5] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); VAL [#NULL.base=8, #NULL.offset=3, old(#NULL.base)=8, old(#NULL.offset)=3] [?] #NULL.base, #NULL.offset := 0, 0; [?] #valid := #valid[0 := 0]; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=8, old(#NULL.offset)=3] [?] ensures true; VAL [#NULL.base=0, #NULL.offset=0, old(#NULL.base)=8, old(#NULL.offset)=3] [?] RET call ULTIMATE.init(); VAL [#NULL.base=0, #NULL.offset=0] [?] CALL call #t~ret10 := main(); VAL [#NULL.base=0, #NULL.offset=0] [L16] havoc ~s1~0.base, ~s1~0.offset; [L17] havoc ~s2~0.base, ~s2~0.offset; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; VAL [#NULL.base=0, #NULL.offset=0, ~n~0=0] [L19] CALL call #t~ret9.base, #t~ret9.offset := cstrncat(~s1~0.base, ~s1~0.offset, ~s2~0.base, ~s2~0.offset, ~n~0); VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0] [L2-L14] ~s1.base, ~s1.offset := #in~s1.base, #in~s1.offset; [L2-L14] ~s2.base, ~s2.offset := #in~s2.base, #in~s2.offset; [L2-L14] ~n := #in~n; [L4] ~s~0.base, ~s~0.offset := ~s1.base, ~s1.offset; VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0, ~n=0, ~s1.base=6, ~s1.offset=5, ~s2.base=7, ~s2.offset=2, ~s~0.base=6, ~s~0.offset=5] [L5] call #t~mem0 := read~int(~s~0.base, ~s~0.offset, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#in~n=0, #in~s1.base=6, #in~s1.offset=5, #in~s2.base=7, #in~s2.offset=2, #NULL.base=0, #NULL.offset=0, ~n=0, ~s1.base=6, ~s1.offset=5, ~s2.base=7, ~s2.offset=2, ~s~0.base=6, ~s~0.offset=5] [?] CALL call ULTIMATE.init(); VAL [#NULL!base=8, #NULL!offset=3, old(#NULL!base)=8, old(#NULL!offset)=3] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; VAL [#NULL!base=0, #NULL!offset=0, old(#NULL!base)=8, old(#NULL!offset)=3] [?] RET call ULTIMATE.init(); VAL [#NULL!base=0, #NULL!offset=0] [?] CALL call #t~ret10 := main(); VAL [#NULL!base=0, #NULL!offset=0] [L16] havoc ~s1~0; [L17] havoc ~s2~0; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; VAL [#NULL!base=0, #NULL!offset=0, ~n~0=0] [L19] CALL call #t~ret9 := cstrncat(~s1~0, ~s2~0, ~n~0); VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0] [L2-L14] ~s1 := #in~s1; [L2-L14] ~s2 := #in~s2; [L2-L14] ~n := #in~n; [L4] ~s~0 := ~s1; VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0, ~n=0, ~s1!base=6, ~s1!offset=5, ~s2!base=7, ~s2!offset=2, ~s~0!base=6, ~s~0!offset=5] [L5] FCALL call #t~mem0 := read~int(~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0, ~n=0, ~s1!base=6, ~s1!offset=5, ~s2!base=7, ~s2!offset=2, ~s~0!base=6, ~s~0!offset=5] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); VAL [#NULL!base=8, #NULL!offset=3, old(#NULL!base)=8, old(#NULL!offset)=3] [?] #NULL := { base: 0, offset: 0 }; [?] #valid[0] := 0; VAL [#NULL!base=0, #NULL!offset=0, old(#NULL!base)=8, old(#NULL!offset)=3] [?] RET call ULTIMATE.init(); VAL [#NULL!base=0, #NULL!offset=0] [?] CALL call #t~ret10 := main(); VAL [#NULL!base=0, #NULL!offset=0] [L16] havoc ~s1~0; [L17] havoc ~s2~0; [L18] assume -2147483648 <= #t~nondet8 && #t~nondet8 <= 2147483647; [L18] ~n~0 := #t~nondet8; [L18] havoc #t~nondet8; VAL [#NULL!base=0, #NULL!offset=0, ~n~0=0] [L19] CALL call #t~ret9 := cstrncat(~s1~0, ~s2~0, ~n~0); VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0] [L2-L14] ~s1 := #in~s1; [L2-L14] ~s2 := #in~s2; [L2-L14] ~n := #in~n; [L4] ~s~0 := ~s1; VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0, ~n=0, ~s1!base=6, ~s1!offset=5, ~s2!base=7, ~s2!offset=2, ~s~0!base=6, ~s~0!offset=5] [L5] FCALL call #t~mem0 := read~int(~s~0, 1); [?] requires 1 == #valid[#ptr.base]; VAL [#in~n=0, #in~s1!base=6, #in~s1!offset=5, #in~s2!base=7, #in~s2!offset=2, #NULL!base=0, #NULL!offset=0, ~n=0, ~s1!base=6, ~s1!offset=5, ~s2!base=7, ~s2!offset=2, ~s~0!base=6, ~s~0!offset=5] [L16] char *s1; [L17] char *s2; [L18] int n = __VERIFIER_nondet_int(); [L19] CALL cstrncat(s1, s2, n) VAL [\old(n)=0, s1={6:5}, s2={7:2}] [L4] char *s = s1; VAL [\old(n)=0, n=0, s={6:5}, s1={6:5}, s1={6:5}, s2={7:2}, s2={7:2}] [L5] \read(*s) ----- [2018-11-23 01:48:30,429 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_113a274e-c91e-481c-94f3-483894ffee2f/bin-2019/uautomizer/witness.graphml [2018-11-23 01:48:30,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 01:48:30,430 INFO L168 Benchmark]: Toolchain (without parser) took 748.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -117.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:48:30,431 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:48:30,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 172.54 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 945.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 01:48:30,432 INFO L168 Benchmark]: Boogie Preprocessor took 30.36 ms. Allocated memory is still 1.0 GB. Free memory was 945.8 MB in the beginning and 943.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 01:48:30,433 INFO L168 Benchmark]: RCFGBuilder took 267.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -148.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-11-23 01:48:30,433 INFO L168 Benchmark]: TraceAbstraction took 238.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. [2018-11-23 01:48:30,434 INFO L168 Benchmark]: Witness Printer took 36.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 11.5 GB. [2018-11-23 01:48:30,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 172.54 ms. Allocated memory is still 1.0 GB. Free memory was 956.6 MB in the beginning and 945.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.36 ms. Allocated memory is still 1.0 GB. Free memory was 945.8 MB in the beginning and 943.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 267.42 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.6 MB). Free memory was 943.2 MB in the beginning and 1.1 GB in the end (delta: -148.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 238.24 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 11.5 GB. * Witness Printer took 36.04 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. 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={6:5}, s2={7:2}] [L4] char *s = s1; VAL [\old(n)=0, n=0, s={6:5}, s1={6:5}, s1={6:5}, s2={7:2}, s2={7:2}] [L5] \read(*s) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 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=38occurred 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, 9 NumberOfCodeBlocks, 9 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...