./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 2e94e6aa 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 0.1.24-2e94e6a [2019-01-01 17:12:34,832 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 17:12:34,834 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 17:12:34,847 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 17:12:34,848 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 17:12:34,849 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 17:12:34,851 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 17:12:34,853 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 17:12:34,855 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 17:12:34,856 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 17:12:34,857 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 17:12:34,858 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 17:12:34,859 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 17:12:34,860 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 17:12:34,862 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 17:12:34,863 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 17:12:34,864 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 17:12:34,867 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 17:12:34,869 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 17:12:34,871 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 17:12:34,873 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 17:12:34,875 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 17:12:34,878 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 17:12:34,878 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 17:12:34,878 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 17:12:34,880 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 17:12:34,881 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 17:12:34,882 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 17:12:34,883 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 17:12:34,885 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 17:12:34,886 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 17:12:34,886 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 17:12:34,887 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 17:12:34,887 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 17:12:34,889 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 17:12:34,890 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 17:12:34,890 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-01-01 17:12:34,907 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 17:12:34,907 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 17:12:34,909 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 17:12:34,909 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 17:12:34,909 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 17:12:34,909 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 17:12:34,910 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-01 17:12:34,910 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 17:12:34,910 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 17:12:34,910 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-01 17:12:34,910 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 17:12:34,911 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-01-01 17:12:34,911 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2019-01-01 17:12:34,911 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-01-01 17:12:34,911 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-01 17:12:34,911 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-01 17:12:34,911 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 17:12:34,913 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 17:12:34,913 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 17:12:34,914 INFO L133 SettingsManager]: * To the following directory=./dump/ [2019-01-01 17:12:34,914 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-01 17:12:34,914 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-01-01 17:12:34,914 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 17:12:34,914 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-01 17:12:34,914 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 17:12:34,916 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-01 17:12:34,916 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 [2019-01-01 17:12:34,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 17:12:34,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 17:12:34,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 17:12:34,975 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 17:12:34,975 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 17:12:34,976 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2019-01-01 17:12:35,040 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2056e8d5c/cbd10af70eb843a98b73d23fe01d07da/FLAGbc6f7a91c [2019-01-01 17:12:35,518 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 17:12:35,519 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/array-memsafety/cstrncat_unsafe_false-valid-deref.i [2019-01-01 17:12:35,524 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2056e8d5c/cbd10af70eb843a98b73d23fe01d07da/FLAGbc6f7a91c [2019-01-01 17:12:35,880 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2056e8d5c/cbd10af70eb843a98b73d23fe01d07da [2019-01-01 17:12:35,884 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 17:12:35,886 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-01-01 17:12:35,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 17:12:35,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 17:12:35,894 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 17:12:35,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 05:12:35" (1/1) ... [2019-01-01 17:12:35,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4327ac50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:35, skipping insertion in model container [2019-01-01 17:12:35,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 05:12:35" (1/1) ... [2019-01-01 17:12:35,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 17:12:35,930 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 17:12:36,152 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 17:12:36,170 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 17:12:36,194 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 17:12:36,220 INFO L195 MainTranslator]: Completed translation [2019-01-01 17:12:36,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36 WrapperNode [2019-01-01 17:12:36,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 17:12:36,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 17:12:36,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 17:12:36,223 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 17:12:36,240 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (1/1) ... [2019-01-01 17:12:36,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 17:12:36,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 17:12:36,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 17:12:36,277 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 17:12:36,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (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 [2019-01-01 17:12:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-01-01 17:12:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 17:12:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrncat [2019-01-01 17:12:36,410 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-01-01 17:12:36,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-01-01 17:12:36,410 INFO L130 BoogieDeclarations]: Found specification of procedure cstrncat [2019-01-01 17:12:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-01-01 17:12:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-01-01 17:12:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-01-01 17:12:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-01-01 17:12:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 17:12:36,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-01-01 17:12:36,932 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 17:12:36,932 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2019-01-01 17:12:36,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:12:36 BoogieIcfgContainer [2019-01-01 17:12:36,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 17:12:36,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-01-01 17:12:36,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-01-01 17:12:36,938 INFO L276 PluginConnector]: TraceAbstraction initialized [2019-01-01 17:12:36,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.01 05:12:35" (1/3) ... [2019-01-01 17:12:36,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea29f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 05:12:36, skipping insertion in model container [2019-01-01 17:12:36,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 05:12:36" (2/3) ... [2019-01-01 17:12:36,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ea29f70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.01 05:12:36, skipping insertion in model container [2019-01-01 17:12:36,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:12:36" (3/3) ... [2019-01-01 17:12:36,942 INFO L112 eAbstractionObserver]: Analyzing ICFG cstrncat_unsafe_false-valid-deref.i [2019-01-01 17:12:36,953 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-01-01 17:12:36,963 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2019-01-01 17:12:36,982 INFO L257 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2019-01-01 17:12:37,015 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 17:12:37,015 INFO L382 AbstractCegarLoop]: Interprodecural is true [2019-01-01 17:12:37,016 INFO L383 AbstractCegarLoop]: Hoare is false [2019-01-01 17:12:37,016 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-01-01 17:12:37,017 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 17:12:37,017 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 17:12:37,017 INFO L387 AbstractCegarLoop]: Difference is false [2019-01-01 17:12:37,017 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 17:12:37,017 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-01-01 17:12:37,035 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-01-01 17:12:37,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-01-01 17:12:37,045 INFO L394 BasicCegarLoop]: Found error trace [2019-01-01 17:12:37,046 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-01-01 17:12:37,049 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, cstrncatErr9REQUIRES_VIOLATION, cstrncatErr4REQUIRES_VIOLATION, cstrncatErr2REQUIRES_VIOLATION, cstrncatErr3REQUIRES_VIOLATION, cstrncatErr8REQUIRES_VIOLATION, cstrncatErr1REQUIRES_VIOLATION, cstrncatErr6REQUIRES_VIOLATION, cstrncatErr7REQUIRES_VIOLATION, cstrncatErr5REQUIRES_VIOLATION, cstrncatErr0REQUIRES_VIOLATION]=== [2019-01-01 17:12:37,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 17:12:37,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1122182536, now seen corresponding path program 1 times [2019-01-01 17:12:37,058 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 17:12:37,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 17:12:37,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:12:37,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 17:12:37,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 17:12:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 17:12:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 17:12:37,201 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2019-01-01 17:12:37,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.01 05:12:37 BoogieIcfgContainer [2019-01-01 17:12:37,231 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-01-01 17:12:37,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 17:12:37,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 17:12:37,232 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 17:12:37,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 05:12:36" (3/4) ... [2019-01-01 17:12:37,236 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2019-01-01 17:12:37,287 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 17:12:37,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 17:12:37,288 INFO L168 Benchmark]: Toolchain (without parser) took 1403.41 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 55.1 MB). Free memory was 952.7 MB in the beginning and 1.0 GB in the end (delta: -53.8 MB). Peak memory consumption was 1.2 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:37,291 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 17:12:37,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.07 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:37,293 INFO L168 Benchmark]: Boogie Preprocessor took 53.45 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 17:12:37,293 INFO L168 Benchmark]: RCFGBuilder took 656.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 55.1 MB). Free memory was 942.0 MB in the beginning and 1.0 GB in the end (delta: -85.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:37,294 INFO L168 Benchmark]: TraceAbstraction took 297.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:37,295 INFO L168 Benchmark]: Witness Printer took 55.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 11.5 GB. [2019-01-01 17:12:37,301 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 335.07 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 53.45 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 656.55 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 55.1 MB). Free memory was 942.0 MB in the beginning and 1.0 GB in the end (delta: -85.9 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 297.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * Witness Printer took 55.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 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...