./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/apache-get-tag.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loop-invgen/apache-get-tag.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad8e21886f5f45a7c58400298498a881b4f628bf6fff913be81ab14cf250dd19 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 23:27:12,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 23:27:12,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 23:27:12,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 23:27:12,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 23:27:12,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 23:27:12,866 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 23:27:12,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 23:27:12,869 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 23:27:12,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 23:27:12,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 23:27:12,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 23:27:12,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 23:27:12,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 23:27:12,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 23:27:12,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 23:27:12,876 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 23:27:12,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 23:27:12,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 23:27:12,880 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 23:27:12,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 23:27:12,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 23:27:12,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 23:27:12,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 23:27:12,901 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 23:27:12,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 23:27:12,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 23:27:12,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 23:27:12,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 23:27:12,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 23:27:12,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 23:27:12,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 23:27:12,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 23:27:12,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 23:27:12,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 23:27:12,918 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 23:27:12,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 23:27:12,919 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 23:27:12,919 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 23:27:12,921 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 23:27:12,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 23:27:12,923 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-14 23:27:12,952 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 23:27:12,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 23:27:12,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 23:27:12,953 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 23:27:12,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 23:27:12,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 23:27:12,955 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 23:27:12,955 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 23:27:12,955 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 23:27:12,955 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 23:27:12,955 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 23:27:12,956 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 23:27:12,956 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 23:27:12,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 23:27:12,956 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 23:27:12,956 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 23:27:12,957 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 23:27:12,957 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 23:27:12,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 23:27:12,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 23:27:12,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 23:27:12,958 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 23:27:12,958 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 23:27:12,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 23:27:12,958 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 23:27:12,958 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 23:27:12,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 23:27:12,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 23:27:12,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 23:27:12,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 23:27:12,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 23:27:12,960 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 23:27:12,960 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 23:27:12,960 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad8e21886f5f45a7c58400298498a881b4f628bf6fff913be81ab14cf250dd19 [2021-12-14 23:27:13,194 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 23:27:13,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 23:27:13,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 23:27:13,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 23:27:13,222 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 23:27:13,223 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-12-14 23:27:13,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50195fb1/2793f52529fc446886864dd33736c784/FLAGd8f6e2175 [2021-12-14 23:27:13,663 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 23:27:13,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i [2021-12-14 23:27:13,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50195fb1/2793f52529fc446886864dd33736c784/FLAGd8f6e2175 [2021-12-14 23:27:14,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c50195fb1/2793f52529fc446886864dd33736c784 [2021-12-14 23:27:14,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 23:27:14,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 23:27:14,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 23:27:14,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 23:27:14,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 23:27:14,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a8d5f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14, skipping insertion in model container [2021-12-14 23:27:14,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 23:27:14,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 23:27:14,267 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-12-14 23:27:14,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:27:14,284 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 23:27:14,294 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/apache-get-tag.i[893,906] [2021-12-14 23:27:14,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 23:27:14,311 INFO L208 MainTranslator]: Completed translation [2021-12-14 23:27:14,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14 WrapperNode [2021-12-14 23:27:14,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 23:27:14,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 23:27:14,313 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 23:27:14,313 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 23:27:14,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,339 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,365 INFO L137 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 174 [2021-12-14 23:27:14,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 23:27:14,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 23:27:14,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 23:27:14,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 23:27:14,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,392 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 23:27:14,409 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 23:27:14,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 23:27:14,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 23:27:14,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14" (1/1) ... [2021-12-14 23:27:14,416 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:27:14,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:27:14,440 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:27:14,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-14 23:27:14,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 23:27:14,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 23:27:14,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 23:27:14,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 23:27:14,529 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 23:27:14,531 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 23:27:14,679 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 23:27:14,686 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 23:27:14,686 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-14 23:27:14,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:27:14 BoogieIcfgContainer [2021-12-14 23:27:14,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 23:27:14,689 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 23:27:14,689 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 23:27:14,692 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 23:27:14,692 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:27:14,692 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 11:27:14" (1/3) ... [2021-12-14 23:27:14,693 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ba7e850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:27:14, skipping insertion in model container [2021-12-14 23:27:14,694 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:27:14,694 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 11:27:14" (2/3) ... [2021-12-14 23:27:14,694 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2ba7e850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 11:27:14, skipping insertion in model container [2021-12-14 23:27:14,694 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 23:27:14,694 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:27:14" (3/3) ... [2021-12-14 23:27:14,695 INFO L388 chiAutomizerObserver]: Analyzing ICFG apache-get-tag.i [2021-12-14 23:27:14,730 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 23:27:14,731 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 23:27:14,731 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 23:27:14,731 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 23:27:14,731 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 23:27:14,731 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 23:27:14,731 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 23:27:14,732 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 23:27:14,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 68 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:27:14,763 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2021-12-14 23:27:14,764 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:27:14,764 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:27:14,768 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-14 23:27:14,768 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:27:14,769 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 23:27:14,769 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 68 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:27:14,775 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 28 [2021-12-14 23:27:14,775 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 23:27:14,776 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 23:27:14,776 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-12-14 23:27:14,776 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-14 23:27:14,782 INFO L791 eck$LassoCheckResult]: Stem: 56#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2); 45#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet1#1, main_#t~pre2#1, main_#t~nondet3#1, main_#t~post4#1, main_#t~post5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~post8#1, main_#t~nondet9#1, main_#t~post10#1, main_~tagbuf_len~0#1, main_~t~0#1;havoc main_~tagbuf_len~0#1;havoc main_~t~0#1;main_~tagbuf_len~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 25#L29true assume main_~tagbuf_len~0#1 >= 1; 57#L29-1true main_~t~0#1 := 0;main_#t~pre2#1 := main_~tagbuf_len~0#1 - 1;main_~tagbuf_len~0#1 := main_~tagbuf_len~0#1 - 1;havoc main_#t~pre2#1; 47#L32-2true [2021-12-14 23:27:14,782 INFO L793 eck$LassoCheckResult]: Loop: 47#L32-2true assume !false; 26#L33true assume !(main_~t~0#1 == main_~tagbuf_len~0#1); 66#L38true assume !(0 != main_#t~nondet3#1);havoc main_#t~nondet3#1;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if 0 <= main_~t~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 52#L18-6true assume !(0 == __VERIFIER_assert_~cond#1); 46#L18-8true assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if main_~t~0#1 <= main_~tagbuf_len~0#1 then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; 59#L18-9true assume !(0 == __VERIFIER_assert_~cond#1); 34#L18-11true assume { :end_inline___VERIFIER_assert } true;main_#t~post4#1 := main_~t~0#1;main_~t~0#1 := 1 + main_#t~post4#1;havoc main_#t~post4#1; 47#L32-2true [2021-12-14 23:27:14,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:27:14,791 INFO L85 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2021-12-14 23:27:14,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:27:14,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394377477] [2021-12-14 23:27:14,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:27:14,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:27:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:27:14,927 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:27:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:27:14,964 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:27:14,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:27:14,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1815086236, now seen corresponding path program 1 times [2021-12-14 23:27:14,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:27:14,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187758194] [2021-12-14 23:27:14,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:27:14,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:27:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:27:15,001 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:27:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:27:15,025 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:27:15,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:27:15,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2133582282, now seen corresponding path program 1 times [2021-12-14 23:27:15,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 23:27:15,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495890017] [2021-12-14 23:27:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 23:27:15,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 23:27:15,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:27:15,057 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 23:27:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 23:27:15,078 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 23:27:15,274 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:27:15,274 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:27:15,274 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:27:15,274 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:27:15,275 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 23:27:15,275 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:27:15,275 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:27:15,276 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:27:15,276 INFO L133 ssoRankerPreferences]: Filename of dumped script: apache-get-tag.i_Iteration1_Loop [2021-12-14 23:27:15,277 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:27:15,277 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:27:15,290 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:27:15,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:27:15,305 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:27:15,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:27:15,379 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:27:15,379 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 23:27:15,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:27:15,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:27:15,383 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:27:15,386 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 23:27:15,386 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:27:15,399 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-12-14 23:27:15,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-12-14 23:27:15,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:27:15,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:27:15,440 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:27:15,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-12-14 23:27:15,443 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 23:27:15,443 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 23:27:15,493 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 23:27:15,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-12-14 23:27:15,499 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 23:27:15,500 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 23:27:15,500 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 23:27:15,500 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 23:27:15,500 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 23:27:15,500 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:27:15,500 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 23:27:15,500 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 23:27:15,500 INFO L133 ssoRankerPreferences]: Filename of dumped script: apache-get-tag.i_Iteration1_Loop [2021-12-14 23:27:15,500 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 23:27:15,500 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 23:27:15,502 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:27:15,510 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:27:15,522 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:27:15,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-12-14 23:27:15,591 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 23:27:15,595 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 23:27:15,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:27:15,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:27:15,604 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:27:15,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-12-14 23:27:15,614 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:27:15,622 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:27:15,622 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:27:15,623 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:27:15,623 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:27:15,623 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:27:15,625 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:27:15,625 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:27:15,639 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-12-14 23:27:15,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-12-14 23:27:15,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:27:15,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:27:15,663 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:27:15,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-12-14 23:27:15,665 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-12-14 23:27:15,671 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 23:27:15,671 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 23:27:15,671 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 23:27:15,671 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 23:27:15,672 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 23:27:15,673 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 23:27:15,673 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 23:27:15,675 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 23:27:15,681 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 23:27:15,681 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-12-14 23:27:15,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 23:27:15,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 23:27:15,687 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-14 23:27:15,694 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 23:27:15,694 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 23:27:15,695 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 23:27:15,695 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~tagbuf_len~0#1, ULTIMATE.start_main_~t~0#1) = 1*ULTIMATE.start_main_~tagbuf_len~0#1 - 1*ULTIMATE.start_main_~t~0#1 Supporting invariants [] [2021-12-14 23:27:15,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-12-14 23:27:15,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-12-14 23:27:15,720 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 23:27:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 23:27:15,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:27:15,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-14 23:27:15,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:27:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 23:27:15,778 WARN L261 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-14 23:27:15,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 23:27:15,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 23:27:15,953 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2021-12-14 23:27:15,954 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 68 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:27:15,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-12-14 23:27:16,186 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 68 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 207 states and 265 transitions. Complement of second has 11 states. [2021-12-14 23:27:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2021-12-14 23:27:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 23:27:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2021-12-14 23:27:16,193 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 191 transitions. Stem has 4 letters. Loop has 7 letters. [2021-12-14 23:27:16,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:27:16,194 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 191 transitions. Stem has 11 letters. Loop has 7 letters. [2021-12-14 23:27:16,194 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:27:16,195 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 191 transitions. Stem has 4 letters. Loop has 14 letters. [2021-12-14 23:27:16,195 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 23:27:16,195 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 207 states and 265 transitions. [2021-12-14 23:27:16,205 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 23:27:16,207 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 207 states to 0 states and 0 transitions. [2021-12-14 23:27:16,208 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-14 23:27:16,208 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-14 23:27:16,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-14 23:27:16,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 23:27:16,208 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:27:16,208 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:27:16,209 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 23:27:16,209 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 23:27:16,209 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-14 23:27:16,209 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 23:27:16,209 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-14 23:27:16,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 11:27:16 BoogieIcfgContainer [2021-12-14 23:27:16,214 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 23:27:16,215 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 23:27:16,215 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 23:27:16,215 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 23:27:16,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 11:27:14" (3/4) ... [2021-12-14 23:27:16,217 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 23:27:16,218 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 23:27:16,218 INFO L158 Benchmark]: Toolchain (without parser) took 2115.78ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 65.7MB in the beginning and 94.6MB in the end (delta: -28.9MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2021-12-14 23:27:16,219 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:27:16,219 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.91ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 65.4MB in the beginning and 110.5MB in the end (delta: -45.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-14 23:27:16,220 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.12ms. Allocated memory is still 134.2MB. Free memory was 110.5MB in the beginning and 108.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:27:16,220 INFO L158 Benchmark]: Boogie Preprocessor took 41.50ms. Allocated memory is still 134.2MB. Free memory was 108.3MB in the beginning and 106.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 23:27:16,221 INFO L158 Benchmark]: RCFGBuilder took 279.15ms. Allocated memory is still 134.2MB. Free memory was 106.9MB in the beginning and 94.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 23:27:16,221 INFO L158 Benchmark]: BuchiAutomizer took 1525.74ms. Allocated memory is still 134.2MB. Free memory was 94.9MB in the beginning and 95.3MB in the end (delta: -407.9kB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB. [2021-12-14 23:27:16,221 INFO L158 Benchmark]: Witness Printer took 2.81ms. Allocated memory is still 134.2MB. Free memory was 95.3MB in the beginning and 94.6MB in the end (delta: 740.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 23:27:16,224 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 96.5MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.91ms. Allocated memory was 96.5MB in the beginning and 134.2MB in the end (delta: 37.7MB). Free memory was 65.4MB in the beginning and 110.5MB in the end (delta: -45.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.12ms. Allocated memory is still 134.2MB. Free memory was 110.5MB in the beginning and 108.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.50ms. Allocated memory is still 134.2MB. Free memory was 108.3MB in the beginning and 106.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 279.15ms. Allocated memory is still 134.2MB. Free memory was 106.9MB in the beginning and 94.9MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 1525.74ms. Allocated memory is still 134.2MB. Free memory was 94.9MB in the beginning and 95.3MB in the end (delta: -407.9kB). Peak memory consumption was 1.5MB. Max. memory is 16.1GB. * Witness Printer took 2.81ms. Allocated memory is still 134.2MB. Free memory was 95.3MB in the beginning and 94.6MB in the end (delta: 740.7kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -1 * t + tagbuf_len and consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. 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 [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 72 mSDsluCounter, 158 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 110 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 128 IncrementalHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 48 mSDtfsCounter, 128 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital26 mio100 ax100 hnf100 lsp65 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq158 hnf96 smp73 dnf100 smp100 tf110 neg95 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 43ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-12-14 23:27:16,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE