./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-libowfat/wcsstr_true-termination.c.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination 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/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-libowfat/wcsstr_true-termination.c.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a42eedf37918bfaebd682f32b41eb77361e43f9a ............................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:18:21,055 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:18:21,057 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:18:21,073 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:18:21,073 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:18:21,075 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:18:21,076 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:18:21,079 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:18:21,080 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:18:21,081 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:18:21,082 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:18:21,082 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:18:21,084 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:18:21,085 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:18:21,087 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:18:21,088 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:18:21,089 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:18:21,091 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:18:21,093 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:18:21,096 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:18:21,097 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:18:21,098 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:18:21,101 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:18:21,102 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:18:21,102 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:18:21,103 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:18:21,105 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:18:21,106 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:18:21,107 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:18:21,109 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:18:21,109 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:18:21,110 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:18:21,110 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:18:21,110 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:18:21,112 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:18:21,113 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:18:21,113 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:18:21,133 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:18:21,133 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:18:21,135 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:18:21,135 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:18:21,135 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:18:21,135 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:18:21,136 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:18:21,136 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:18:21,137 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:18:21,137 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:18:21,137 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:18:21,137 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:18:21,137 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:18:21,138 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:18:21,138 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:18:21,138 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:18:21,138 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:18:21,138 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:18:21,138 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:18:21,140 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:18:21,140 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:18:21,140 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:18:21,141 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:18:21,141 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:18:21,141 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:18:21,141 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:18:21,141 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:18:21,143 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:18:21,144 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:18:21,144 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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(F end) ) 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a42eedf37918bfaebd682f32b41eb77361e43f9a [2018-11-28 23:18:21,199 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:18:21,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:18:21,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:18:21,227 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:18:21,230 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:18:21,232 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-libowfat/wcsstr_true-termination.c.i [2018-11-28 23:18:21,303 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc30f745/5590e538624949d6b0eac9547a16df2d/FLAG02a207b18 [2018-11-28 23:18:21,854 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:18:21,856 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-libowfat/wcsstr_true-termination.c.i [2018-11-28 23:18:21,872 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc30f745/5590e538624949d6b0eac9547a16df2d/FLAG02a207b18 [2018-11-28 23:18:22,133 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcc30f745/5590e538624949d6b0eac9547a16df2d [2018-11-28 23:18:22,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:18:22,142 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:18:22,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:18:22,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:18:22,148 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:18:22,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:18:22" (1/1) ... [2018-11-28 23:18:22,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37e3ec09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22, skipping insertion in model container [2018-11-28 23:18:22,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:18:22" (1/1) ... [2018-11-28 23:18:22,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:18:22,224 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:18:22,700 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:18:22,720 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:18:22,769 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:18:22,835 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:18:22,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22 WrapperNode [2018-11-28 23:18:22,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:18:22,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:18:22,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:18:22,837 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:18:22,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22" (1/1) ... [2018-11-28 23:18:22,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22" (1/1) ... [2018-11-28 23:18:23,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:18:23,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:18:23,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:18:23,004 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:18:23,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22" (1/1) ... [2018-11-28 23:18:23,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22" (1/1) ... [2018-11-28 23:18:23,028 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22" (1/1) ... [2018-11-28 23:18:23,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22" (1/1) ... [2018-11-28 23:18:23,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22" (1/1) ... [2018-11-28 23:18:23,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22" (1/1) ... [2018-11-28 23:18:23,066 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22" (1/1) ... [2018-11-28 23:18:23,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:18:23,070 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:18:23,070 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:18:23,071 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:18:23,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22" (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:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:18:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 23:18:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 23:18:23,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 23:18:23,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 23:18:23,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:18:23,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:18:23,722 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:18:23,723 INFO L280 CfgBuilder]: Removed 8 assue(true) statements. [2018-11-28 23:18:23,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:18:23 BoogieIcfgContainer [2018-11-28 23:18:23,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:18:23,725 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:18:23,726 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:18:23,731 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:18:23,732 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:18:23,733 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:18:22" (1/3) ... [2018-11-28 23:18:23,734 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27108699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:18:23, skipping insertion in model container [2018-11-28 23:18:23,734 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:18:23,734 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:18:22" (2/3) ... [2018-11-28 23:18:23,736 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@27108699 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:18:23, skipping insertion in model container [2018-11-28 23:18:23,736 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:18:23,736 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:18:23" (3/3) ... [2018-11-28 23:18:23,739 INFO L375 chiAutomizerObserver]: Analyzing ICFG wcsstr_true-termination.c.i [2018-11-28 23:18:23,812 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:18:23,813 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:18:23,814 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:18:23,814 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:18:23,814 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:18:23,814 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:18:23,816 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:18:23,816 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:18:23,816 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:18:23,836 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2018-11-28 23:18:23,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 23:18:23,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:18:23,868 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:18:23,877 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:18:23,878 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-28 23:18:23,878 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:18:23,878 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2018-11-28 23:18:23,880 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 23:18:23,881 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:18:23,881 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:18:23,881 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:18:23,881 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-28 23:18:23,893 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 12#L-1true havoc main_#res;havoc main_#t~nondet10, main_#t~malloc11.base, main_#t~malloc11.offset, main_#t~nondet12, main_#t~malloc13.base, main_#t~malloc13.offset, main_#t~ret14.base, main_#t~ret14.offset, main_~in_len~0, main_~hay~0.base, main_~hay~0.offset, main_~out_len~0, main_~needle~0.base, main_~needle~0.offset;main_~in_len~0 := main_#t~nondet10;havoc main_#t~nondet10; 3#L516true assume !(main_~in_len~0 < 1);call main_#t~malloc11.base, main_#t~malloc11.offset := #Ultimate.alloc(main_~in_len~0);main_~hay~0.base, main_~hay~0.offset := main_#t~malloc11.base, main_#t~malloc11.offset;call write~int(0, main_~hay~0.base, main_~hay~0.offset + 4 * (main_~in_len~0 - 1), 4);main_~out_len~0 := main_#t~nondet12;havoc main_#t~nondet12; 15#L520true assume !(main_~out_len~0 < 1);call main_#t~malloc13.base, main_#t~malloc13.offset := #Ultimate.alloc(main_~out_len~0);main_~needle~0.base, main_~needle~0.offset := main_#t~malloc13.base, main_#t~malloc13.offset;call write~int(0, main_~needle~0.base, main_~needle~0.offset + 4 * (main_~out_len~0 - 1), 4);wcsstr_#in~haystack.base, wcsstr_#in~haystack.offset, wcsstr_#in~needle.base, wcsstr_#in~needle.offset := main_~hay~0.base, main_~hay~0.offset, main_~needle~0.base, main_~needle~0.offset;havoc wcsstr_#res.base, wcsstr_#res.offset;havoc wcsstr_#t~pre3, wcsstr_#t~mem6, wcsstr_#t~mem4, wcsstr_#t~mem5, wcsstr_#t~short7, wcsstr_#t~mem8, wcsstr_#t~pre2, wcsstr_#t~mem9, wcsstr_~haystack.base, wcsstr_~haystack.offset, wcsstr_~needle.base, wcsstr_~needle.offset, wcsstr_~i~0, wcsstr_~j~0;wcsstr_~haystack.base, wcsstr_~haystack.offset := wcsstr_#in~haystack.base, wcsstr_#in~haystack.offset;wcsstr_~needle.base, wcsstr_~needle.offset := wcsstr_#in~needle.base, wcsstr_#in~needle.offset;havoc wcsstr_~i~0;havoc wcsstr_~j~0;wcsstr_~i~0 := 0; 5#L508-4true [2018-11-28 23:18:23,894 INFO L796 eck$LassoCheckResult]: Loop: 5#L508-4true call wcsstr_#t~mem9 := read~int(wcsstr_~haystack.base, wcsstr_~haystack.offset + 4 * (wcsstr_~i~0 % 4294967296), 4); 18#L508-1true assume !!(0 != wcsstr_#t~mem9);havoc wcsstr_#t~mem9;wcsstr_~j~0 := 0; 8#L509-6true assume !true; 9#L509-7true call wcsstr_#t~mem8 := read~int(wcsstr_~needle.base, wcsstr_~needle.offset + 4 * (wcsstr_~j~0 % 4294967296), 4); 13#L510true assume !(0 == wcsstr_#t~mem8);havoc wcsstr_#t~mem8; 4#L508-3true wcsstr_#t~pre2 := 1 + wcsstr_~i~0;wcsstr_~i~0 := 1 + wcsstr_~i~0;havoc wcsstr_#t~pre2; 5#L508-4true [2018-11-28 23:18:23,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:18:23,903 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2018-11-28 23:18:23,906 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:18:23,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:18:23,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:18:23,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:18:23,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:18:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:18:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:18:24,064 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:18:24,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:18:24,070 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 23:18:24,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:18:24,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1366197546, now seen corresponding path program 1 times [2018-11-28 23:18:24,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:18:24,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:18:24,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:18:24,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:18:24,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:18:24,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:18:24,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:18:24,102 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:18:24,102 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:18:24,104 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 23:18:24,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-28 23:18:24,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-28 23:18:24,127 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-11-28 23:18:24,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:18:24,139 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2018-11-28 23:18:24,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 23:18:24,142 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 5 transitions. [2018-11-28 23:18:24,144 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:18:24,148 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2018-11-28 23:18:24,150 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:18:24,150 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:18:24,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:18:24,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:18:24,151 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:18:24,151 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:18:24,151 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:18:24,151 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:18:24,153 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:18:24,153 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:18:24,153 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:18:24,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:18:24 BoogieIcfgContainer [2018-11-28 23:18:24,161 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:18:24,162 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:18:24,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:18:24,164 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:18:24,165 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:18:23" (3/4) ... [2018-11-28 23:18:24,169 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:18:24,170 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:18:24,171 INFO L168 Benchmark]: Toolchain (without parser) took 2032.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -117.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:18:24,174 INFO L168 Benchmark]: CDTParser took 0.24 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 23:18:24,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.19 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 924.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:18:24,175 INFO L168 Benchmark]: Boogie Procedure Inliner took 166.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 924.5 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:18:24,176 INFO L168 Benchmark]: Boogie Preprocessor took 66.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:18:24,178 INFO L168 Benchmark]: RCFGBuilder took 654.12 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:18:24,180 INFO L168 Benchmark]: BuchiAutomizer took 435.69 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:18:24,182 INFO L168 Benchmark]: Witness Printer took 7.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:18:24,190 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 693.19 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 924.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 166.58 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 113.8 MB). Free memory was 924.5 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 66.14 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 654.12 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: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 435.69 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Witness Printer took 7.85 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic). 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI1 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...