./Ultimate.py --spec /storage/repos/svcomp/c/properties/valid-memsafety.prp --file /storage/repos/svcomp/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/svcomp/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.1.24-91b1670 [2018-11-28 22:43:08,122 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 22:43:08,124 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 22:43:08,138 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 22:43:08,139 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 22:43:08,140 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 22:43:08,141 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 22:43:08,144 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 22:43:08,145 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 22:43:08,146 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 22:43:08,147 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 22:43:08,147 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 22:43:08,148 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 22:43:08,150 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 22:43:08,151 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 22:43:08,152 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 22:43:08,153 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 22:43:08,154 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 22:43:08,157 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 22:43:08,158 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 22:43:08,159 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 22:43:08,163 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 22:43:08,166 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 22:43:08,166 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 22:43:08,166 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 22:43:08,167 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 22:43:08,169 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 22:43:08,169 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 22:43:08,170 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 22:43:08,171 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 22:43:08,172 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 22:43:08,172 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 22:43:08,172 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 22:43:08,173 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 22:43:08,175 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 22:43:08,177 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 22:43:08,178 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-11-28 22:43:08,202 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 22:43:08,202 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 22:43:08,203 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 22:43:08,203 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 22:43:08,207 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 22:43:08,207 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 22:43:08,208 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 22:43:08,208 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 22:43:08,208 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 22:43:08,208 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 22:43:08,208 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 22:43:08,208 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 22:43:08,211 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 22:43:08,211 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-11-28 22:43:08,211 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-11-28 22:43:08,211 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-11-28 22:43:08,211 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 22:43:08,213 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 22:43:08,214 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 22:43:08,214 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 22:43:08,214 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 22:43:08,214 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 22:43:08,215 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 22:43:08,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 22:43:08,215 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 22:43:08,215 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 22:43:08,215 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 22:43:08,215 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 22:43:08,216 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2018-11-28 22:43:08,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 22:43:08,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 22:43:08,289 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 22:43:08,291 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 22:43:08,292 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 22:43:08,292 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-11-28 22:43:08,356 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3628b54de/03969fd638514bbf908036ae22d07a3f/FLAGf3b6ecdad [2018-11-28 22:43:08,840 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 22:43:08,841 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2018-11-28 22:43:08,846 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3628b54de/03969fd638514bbf908036ae22d07a3f/FLAGf3b6ecdad [2018-11-28 22:43:09,168 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3628b54de/03969fd638514bbf908036ae22d07a3f [2018-11-28 22:43:09,172 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 22:43:09,174 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-28 22:43:09,175 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:09,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 22:43:09,179 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 22:43:09,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:09" (1/1) ... [2018-11-28 22:43:09,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4187cae6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09, skipping insertion in model container [2018-11-28 22:43:09,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:43:09" (1/1) ... [2018-11-28 22:43:09,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 22:43:09,208 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 22:43:09,419 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:09,433 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 22:43:09,458 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 22:43:09,484 INFO L195 MainTranslator]: Completed translation [2018-11-28 22:43:09,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09 WrapperNode [2018-11-28 22:43:09,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 22:43:09,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 22:43:09,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 22:43:09,486 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 22:43:09,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09" (1/1) ... [2018-11-28 22:43:09,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09" (1/1) ... [2018-11-28 22:43:09,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09" (1/1) ... [2018-11-28 22:43:09,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09" (1/1) ... [2018-11-28 22:43:09,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09" (1/1) ... [2018-11-28 22:43:09,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09" (1/1) ... [2018-11-28 22:43:09,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09" (1/1) ... [2018-11-28 22:43:09,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 22:43:09,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 22:43:09,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 22:43:09,525 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 22:43:09,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 22:43:09,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 22:43:09,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 22:43:09,668 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2018-11-28 22:43:09,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 22:43:09,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-28 22:43:09,669 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2018-11-28 22:43:09,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 22:43:09,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 22:43:09,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 22:43:09,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 22:43:09,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 22:43:09,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 22:43:10,126 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 22:43:10,126 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-11-28 22:43:10,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:10 BoogieIcfgContainer [2018-11-28 22:43:10,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 22:43:10,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 22:43:10,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 22:43:10,132 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 22:43:10,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 10:43:09" (1/3) ... [2018-11-28 22:43:10,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2104fc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:10, skipping insertion in model container [2018-11-28 22:43:10,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:43:09" (2/3) ... [2018-11-28 22:43:10,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2104fc86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 10:43:10, skipping insertion in model container [2018-11-28 22:43:10,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:10" (3/3) ... [2018-11-28 22:43:10,137 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe_false-valid-deref.i [2018-11-28 22:43:10,148 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 22:43:10,158 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-11-28 22:43:10,177 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2018-11-28 22:43:10,205 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 22:43:10,206 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 22:43:10,206 INFO L383 AbstractCegarLoop]: Hoare is false [2018-11-28 22:43:10,206 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 22:43:10,207 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 22:43:10,207 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 22:43:10,207 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 22:43:10,207 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 22:43:10,207 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 22:43:10,225 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-11-28 22:43:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 22:43:10,235 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 22:43:10,237 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 22:43:10,240 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cstrncatErr1REQUIRES_VIOLATION, cstrncatErr8REQUIRES_VIOLATION, cstrncatErr3REQUIRES_VIOLATION, cstrncatErr6REQUIRES_VIOLATION, cstrncatErr2REQUIRES_VIOLATION, cstrncatErr7REQUIRES_VIOLATION, cstrncatErr4REQUIRES_VIOLATION, cstrncatErr5REQUIRES_VIOLATION, cstrncatErr0REQUIRES_VIOLATION, cstrncatErr9REQUIRES_VIOLATION]=== [2018-11-28 22:43:10,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 22:43:10,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1122182536, now seen corresponding path program 1 times [2018-11-28 22:43:10,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 22:43:10,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 22:43:10,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:10,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 22:43:10,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 22:43:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:43:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 22:43:10,397 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 22:43:10,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 10:43:10 BoogieIcfgContainer [2018-11-28 22:43:10,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 22:43:10,421 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 22:43:10,421 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 22:43:10,421 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 22:43:10,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:43:10" (3/4) ... [2018-11-28 22:43:10,425 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 22:43:10,473 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 22:43:10,473 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 22:43:10,474 INFO L168 Benchmark]: Toolchain (without parser) took 1301.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 948.7 MB in the beginning and 1.1 GB in the end (delta: -132.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:43:10,476 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:43:10,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.05 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:10,478 INFO L168 Benchmark]: Boogie Preprocessor took 37.92 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 22:43:10,479 INFO L168 Benchmark]: RCFGBuilder took 602.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -163.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:10,480 INFO L168 Benchmark]: TraceAbstraction took 292.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:10,481 INFO L168 Benchmark]: Witness Printer took 52.39 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-28 22:43:10,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 310.05 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 37.92 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 602.87 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -163.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 292.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Witness Printer took 52.39 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: 6.7 MB). Peak memory consumption was 6.7 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, 0.2s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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...