./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-numeric/LeUserDefRec.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/termination-numeric/LeUserDefRec.c -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 f7a7969fc6cc20e98c11cb81158885b6cad7da26c6b558e299f4dcaf9719967a --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 22:59:35,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 22:59:35,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 22:59:35,329 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 22:59:35,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 22:59:35,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 22:59:35,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 22:59:35,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 22:59:35,336 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 22:59:35,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 22:59:35,339 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 22:59:35,340 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 22:59:35,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 22:59:35,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 22:59:35,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 22:59:35,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 22:59:35,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 22:59:35,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 22:59:35,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 22:59:35,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 22:59:35,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 22:59:35,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 22:59:35,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 22:59:35,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 22:59:35,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 22:59:35,361 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 22:59:35,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 22:59:35,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 22:59:35,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 22:59:35,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 22:59:35,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 22:59:35,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 22:59:35,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 22:59:35,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 22:59:35,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 22:59:35,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 22:59:35,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 22:59:35,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 22:59:35,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 22:59:35,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 22:59:35,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 22:59:35,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-12-14 22:59:35,393 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 22:59:35,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 22:59:35,394 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 22:59:35,394 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 22:59:35,395 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 22:59:35,395 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 22:59:35,395 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 22:59:35,395 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-14 22:59:35,395 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-14 22:59:35,396 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-14 22:59:35,396 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-14 22:59:35,396 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-14 22:59:35,396 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-14 22:59:35,397 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 22:59:35,397 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-14 22:59:35,397 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 22:59:35,397 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 22:59:35,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-14 22:59:35,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-14 22:59:35,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-14 22:59:35,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 22:59:35,398 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-14 22:59:35,398 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 22:59:35,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-14 22:59:35,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 22:59:35,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 22:59:35,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 22:59:35,399 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 22:59:35,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 22:59:35,400 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-14 22:59:35,400 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7a7969fc6cc20e98c11cb81158885b6cad7da26c6b558e299f4dcaf9719967a [2021-12-14 22:59:35,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 22:59:35,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 22:59:35,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 22:59:35,602 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 22:59:35,602 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 22:59:35,603 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/LeUserDefRec.c [2021-12-14 22:59:35,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf7f048/271c3fb46cdd442cb795475903e0ba3c/FLAG974416a64 [2021-12-14 22:59:35,997 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 22:59:35,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/LeUserDefRec.c [2021-12-14 22:59:36,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf7f048/271c3fb46cdd442cb795475903e0ba3c/FLAG974416a64 [2021-12-14 22:59:36,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bf7f048/271c3fb46cdd442cb795475903e0ba3c [2021-12-14 22:59:36,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 22:59:36,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 22:59:36,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 22:59:36,014 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 22:59:36,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 22:59:36,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,018 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75fa7032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36, skipping insertion in model container [2021-12-14 22:59:36,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,022 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 22:59:36,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 22:59:36,157 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:59:36,176 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 22:59:36,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 22:59:36,198 INFO L208 MainTranslator]: Completed translation [2021-12-14 22:59:36,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36 WrapperNode [2021-12-14 22:59:36,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 22:59:36,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 22:59:36,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 22:59:36,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 22:59:36,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,230 INFO L137 Inliner]: procedures = 6, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2021-12-14 22:59:36,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 22:59:36,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 22:59:36,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 22:59:36,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 22:59:36,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 22:59:36,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 22:59:36,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 22:59:36,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 22:59:36,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36" (1/1) ... [2021-12-14 22:59:36,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:36,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:36,329 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 22:59:36,331 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 22:59:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure le [2021-12-14 22:59:36,379 INFO L138 BoogieDeclarations]: Found implementation of procedure le [2021-12-14 22:59:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 22:59:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 22:59:36,432 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 22:59:36,442 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 22:59:36,545 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 22:59:36,553 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 22:59:36,553 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 22:59:36,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:59:36 BoogieIcfgContainer [2021-12-14 22:59:36,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 22:59:36,556 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-14 22:59:36,556 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-14 22:59:36,560 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-14 22:59:36,561 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:59:36,561 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.12 10:59:36" (1/3) ... [2021-12-14 22:59:36,564 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a41b215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:59:36, skipping insertion in model container [2021-12-14 22:59:36,564 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:59:36,565 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 10:59:36" (2/3) ... [2021-12-14 22:59:36,568 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2a41b215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.12 10:59:36, skipping insertion in model container [2021-12-14 22:59:36,583 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-14 22:59:36,583 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:59:36" (3/3) ... [2021-12-14 22:59:36,585 INFO L388 chiAutomizerObserver]: Analyzing ICFG LeUserDefRec.c [2021-12-14 22:59:36,629 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-14 22:59:36,629 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-14 22:59:36,629 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-14 22:59:36,629 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-14 22:59:36,629 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-14 22:59:36,629 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-14 22:59:36,629 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-14 22:59:36,629 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-14 22:59:36,638 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 22:59:36,651 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-14 22:59:36,651 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:59:36,651 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:59:36,655 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-14 22:59:36,655 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 22:59:36,655 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-14 22:59:36,656 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-14 22:59:36,657 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-12-14 22:59:36,657 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-14 22:59:36,657 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-14 22:59:36,657 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2021-12-14 22:59:36,657 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-12-14 22:59:36,661 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_#t~ret3#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 15#L23true assume !(main_~x~0#1 < 0);main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1; 9#L26true assume !(main_~y~0#1 < 0);main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 7#L29true call main_#t~ret3#1 := le(main_~x~0#1, main_~y~0#1);< 4#leENTRYtrue [2021-12-14 22:59:36,661 INFO L793 eck$LassoCheckResult]: Loop: 4#leENTRYtrue ~x := #in~x;~y := #in~y; 10#L42true assume ~x > 0 && ~y > 0; 12#L43true call #t~ret5 := le(~x - 1, ~y - 1);< 4#leENTRYtrue [2021-12-14 22:59:36,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:36,665 INFO L85 PathProgramCache]: Analyzing trace with hash 36330292, now seen corresponding path program 1 times [2021-12-14 22:59:36,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:36,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069535427] [2021-12-14 22:59:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:36,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:36,720 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:36,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:36,732 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:36,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:36,734 INFO L85 PathProgramCache]: Analyzing trace with hash 29910, now seen corresponding path program 1 times [2021-12-14 22:59:36,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:36,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888816792] [2021-12-14 22:59:36,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:36,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:36,740 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:36,744 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:36,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:36,746 INFO L85 PathProgramCache]: Analyzing trace with hash -16029501, now seen corresponding path program 1 times [2021-12-14 22:59:36,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 22:59:36,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892847377] [2021-12-14 22:59:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 22:59:36,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 22:59:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:36,768 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 22:59:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 22:59:36,778 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 22:59:36,918 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:59:36,918 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:59:36,918 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:59:36,918 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:59:36,919 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-12-14 22:59:36,919 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:36,919 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:59:36,919 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:59:36,919 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeUserDefRec.c_Iteration1_Loop [2021-12-14 22:59:36,919 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:59:36,919 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:59:36,929 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 22:59:36,933 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 22:59:36,940 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 22:59:36,945 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 22:59:36,947 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 22:59:36,949 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 22:59:36,987 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:59:36,988 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-12-14 22:59:36,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:36,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:37,004 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 22:59:37,005 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 22:59:37,006 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:37,006 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:37,027 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-12-14 22:59:37,027 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {le_~y=0} Honda state: {le_~y=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-12-14 22:59:37,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2021-12-14 22:59:37,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:37,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:37,045 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 22:59:37,046 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 22:59:37,047 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-12-14 22:59:37,047 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:37,084 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 22:59:37,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:37,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:37,085 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 22:59:37,093 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 22:59:37,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-12-14 22:59:37,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-12-14 22:59:37,171 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-12-14 22:59:37,175 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 22:59:37,176 INFO L210 LassoAnalysis]: Preferences: [2021-12-14 22:59:37,176 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-12-14 22:59:37,176 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-12-14 22:59:37,176 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-12-14 22:59:37,176 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-12-14 22:59:37,176 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:37,176 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-12-14 22:59:37,176 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-12-14 22:59:37,176 INFO L133 ssoRankerPreferences]: Filename of dumped script: LeUserDefRec.c_Iteration1_Loop [2021-12-14 22:59:37,176 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-12-14 22:59:37,176 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-12-14 22:59:37,178 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 22:59:37,188 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 22:59:37,190 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 22:59:37,193 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 22:59:37,213 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 22:59:37,215 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 22:59:37,257 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-12-14 22:59:37,260 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-12-14 22:59:37,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:37,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:37,276 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 22:59:37,282 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 22:59:37,289 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-12-14 22:59:37,289 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-12-14 22:59:37,290 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-12-14 22:59:37,290 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-12-14 22:59:37,290 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-12-14 22:59:37,291 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-12-14 22:59:37,291 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-12-14 22:59:37,305 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 22:59:37,311 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-12-14 22:59:37,313 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-12-14 22:59:37,314 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-12-14 22:59:37,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-14 22:59:37,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 22:59:37,316 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 22:59:37,317 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 22:59:37,362 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-12-14 22:59:37,362 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-12-14 22:59:37,363 INFO L513 LassoAnalysis]: Proved termination. [2021-12-14 22:59:37,364 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(le_#in~y) = 1*le_#in~y Supporting invariants [] [2021-12-14 22:59:37,383 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 22:59:37,386 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-12-14 22:59:37,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 22:59:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:37,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-14 22:59:37,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 22:59:37,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-14 22:59:37,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 22:59:37,459 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 22:59:37,479 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2021-12-14 22:59:37,480 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:59:37,529 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2). Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 33 states and 38 transitions. Complement of second has 12 states. [2021-12-14 22:59:37,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2021-12-14 22:59:37,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 22:59:37,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2021-12-14 22:59:37,534 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 3 letters. [2021-12-14 22:59:37,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:37,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 8 letters. Loop has 3 letters. [2021-12-14 22:59:37,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:37,535 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 6 letters. [2021-12-14 22:59:37,535 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-12-14 22:59:37,536 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 38 transitions. [2021-12-14 22:59:37,538 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 22:59:37,539 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 0 states and 0 transitions. [2021-12-14 22:59:37,540 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-12-14 22:59:37,540 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-12-14 22:59:37,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-12-14 22:59:37,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-14 22:59:37,540 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:59:37,540 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:59:37,541 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 22:59:37,541 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-14 22:59:37,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-12-14 22:59:37,541 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-12-14 22:59:37,541 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-12-14 22:59:37,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.12 10:59:37 BoogieIcfgContainer [2021-12-14 22:59:37,545 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-14 22:59:37,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 22:59:37,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 22:59:37,546 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 22:59:37,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 10:59:36" (3/4) ... [2021-12-14 22:59:37,548 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 22:59:37,548 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 22:59:37,549 INFO L158 Benchmark]: Toolchain (without parser) took 1535.48ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 51.8MB in the beginning and 42.7MB in the end (delta: 9.1MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2021-12-14 22:59:37,549 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 81.8MB. Free memory was 41.1MB in the beginning and 41.1MB in the end (delta: 38.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:59:37,550 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.27ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 51.6MB in the beginning and 102.1MB in the end (delta: -50.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2021-12-14 22:59:37,550 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.52ms. Allocated memory is still 123.7MB. Free memory was 101.4MB in the beginning and 100.7MB in the end (delta: 708.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:59:37,550 INFO L158 Benchmark]: Boogie Preprocessor took 27.30ms. Allocated memory is still 123.7MB. Free memory was 100.7MB in the beginning and 99.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 22:59:37,551 INFO L158 Benchmark]: RCFGBuilder took 296.53ms. Allocated memory is still 123.7MB. Free memory was 99.3MB in the beginning and 90.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-14 22:59:37,551 INFO L158 Benchmark]: BuchiAutomizer took 989.27ms. Allocated memory is still 123.7MB. Free memory was 90.9MB in the beginning and 43.4MB in the end (delta: 47.5MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2021-12-14 22:59:37,551 INFO L158 Benchmark]: Witness Printer took 2.57ms. Allocated memory is still 123.7MB. Free memory was 43.4MB in the beginning and 42.7MB in the end (delta: 690.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 22:59:37,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 81.8MB. Free memory was 41.1MB in the beginning and 41.1MB in the end (delta: 38.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 184.27ms. Allocated memory was 81.8MB in the beginning and 123.7MB in the end (delta: 41.9MB). Free memory was 51.6MB in the beginning and 102.1MB in the end (delta: -50.5MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.52ms. Allocated memory is still 123.7MB. Free memory was 101.4MB in the beginning and 100.7MB in the end (delta: 708.5kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.30ms. Allocated memory is still 123.7MB. Free memory was 100.7MB in the beginning and 99.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 296.53ms. Allocated memory is still 123.7MB. Free memory was 99.3MB in the beginning and 90.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 989.27ms. Allocated memory is still 123.7MB. Free memory was 90.9MB in the beginning and 43.4MB in the end (delta: 47.5MB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. * Witness Printer took 2.57ms. Allocated memory is still 123.7MB. Free memory was 43.4MB in the beginning and 42.7MB in the end (delta: 690.6kB). 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 \old(y) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. 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, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 16 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 11 mSDtfsCounter, 16 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq150 hnf94 smp100 dnf100 smp100 tf111 neg100 sie110 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 101ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 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 22:59:37,576 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 22:59:37,790 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