./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/b.16.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 35987657 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-restricted-15/b.16.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 bd5ab01fc166812a75c8bdc5c42111290012e12e0fb0aba380271d0f3f7f7767 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-22 01:31:49,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 01:31:49,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 01:31:49,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 01:31:49,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 01:31:49,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 01:31:49,349 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 01:31:49,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 01:31:49,353 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 01:31:49,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 01:31:49,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 01:31:49,360 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 01:31:49,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 01:31:49,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 01:31:49,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 01:31:49,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 01:31:49,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 01:31:49,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 01:31:49,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 01:31:49,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 01:31:49,377 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 01:31:49,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 01:31:49,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 01:31:49,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 01:31:49,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 01:31:49,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 01:31:49,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 01:31:49,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 01:31:49,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 01:31:49,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 01:31:49,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 01:31:49,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 01:31:49,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 01:31:49,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 01:31:49,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 01:31:49,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 01:31:49,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 01:31:49,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 01:31:49,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 01:31:49,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 01:31:49,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 01:31:49,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 01:31:49,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-07-22 01:31:49,437 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 01:31:49,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 01:31:49,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 01:31:49,439 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 01:31:49,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 01:31:49,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 01:31:49,440 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 01:31:49,440 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-07-22 01:31:49,441 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-07-22 01:31:49,441 INFO L138 SettingsManager]: * Use old map elimination=false [2022-07-22 01:31:49,442 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-07-22 01:31:49,442 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-07-22 01:31:49,442 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-07-22 01:31:49,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 01:31:49,452 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-22 01:31:49,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 01:31:49,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 01:31:49,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-07-22 01:31:49,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-07-22 01:31:49,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-07-22 01:31:49,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 01:31:49,454 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-07-22 01:31:49,454 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 01:31:49,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-07-22 01:31:49,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 01:31:49,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 01:31:49,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 01:31:49,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 01:31:49,457 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-07-22 01:31:49,458 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5ab01fc166812a75c8bdc5c42111290012e12e0fb0aba380271d0f3f7f7767 [2022-07-22 01:31:49,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 01:31:49,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 01:31:49,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 01:31:49,795 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 01:31:49,796 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 01:31:49,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/b.16.c [2022-07-22 01:31:49,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae895c979/4c07b8620ecc42cf89014ab906fa1fb4/FLAGd1fa56950 [2022-07-22 01:31:50,241 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 01:31:50,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/b.16.c [2022-07-22 01:31:50,246 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae895c979/4c07b8620ecc42cf89014ab906fa1fb4/FLAGd1fa56950 [2022-07-22 01:31:50,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae895c979/4c07b8620ecc42cf89014ab906fa1fb4 [2022-07-22 01:31:50,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 01:31:50,258 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 01:31:50,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 01:31:50,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 01:31:50,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 01:31:50,267 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ffe824 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50, skipping insertion in model container [2022-07-22 01:31:50,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 01:31:50,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 01:31:50,390 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:31:50,392 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 01:31:50,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 01:31:50,411 INFO L208 MainTranslator]: Completed translation [2022-07-22 01:31:50,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50 WrapperNode [2022-07-22 01:31:50,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 01:31:50,413 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 01:31:50,413 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 01:31:50,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 01:31:50,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,468 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-07-22 01:31:50,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 01:31:50,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 01:31:50,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 01:31:50,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 01:31:50,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 01:31:50,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 01:31:50,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 01:31:50,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 01:31:50,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50" (1/1) ... [2022-07-22 01:31:50,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:50,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:50,512 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) [2022-07-22 01:31:50,542 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 [2022-07-22 01:31:50,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 01:31:50,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 01:31:50,604 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 01:31:50,606 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 01:31:50,664 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 01:31:50,670 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 01:31:50,670 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-22 01:31:50,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:31:50 BoogieIcfgContainer [2022-07-22 01:31:50,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 01:31:50,672 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-07-22 01:31:50,672 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-07-22 01:31:50,675 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-07-22 01:31:50,675 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:31:50,675 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.07 01:31:50" (1/3) ... [2022-07-22 01:31:50,676 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@287afc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:31:50, skipping insertion in model container [2022-07-22 01:31:50,676 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:31:50,677 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:31:50" (2/3) ... [2022-07-22 01:31:50,677 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@287afc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.07 01:31:50, skipping insertion in model container [2022-07-22 01:31:50,677 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-07-22 01:31:50,677 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:31:50" (3/3) ... [2022-07-22 01:31:50,678 INFO L354 chiAutomizerObserver]: Analyzing ICFG b.16.c [2022-07-22 01:31:50,727 INFO L255 stractBuchiCegarLoop]: Interprodecural is true [2022-07-22 01:31:50,727 INFO L256 stractBuchiCegarLoop]: Hoare is false [2022-07-22 01:31:50,727 INFO L257 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-07-22 01:31:50,727 INFO L258 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-07-22 01:31:50,728 INFO L259 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-07-22 01:31:50,728 INFO L260 stractBuchiCegarLoop]: Difference is false [2022-07-22 01:31:50,728 INFO L261 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-07-22 01:31:50,728 INFO L265 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-07-22 01:31:50,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2022-07-22 01:31:50,747 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:31:50,747 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:31:50,748 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:31:50,752 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 01:31:50,752 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:31:50,753 INFO L287 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-07-22 01:31:50,753 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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) [2022-07-22 01:31:50,754 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-07-22 01:31:50,755 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:31:50,755 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:31:50,755 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-07-22 01:31:50,755 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-07-22 01:31:50,761 INFO L752 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#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_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 9#L11-2true [2022-07-22 01:31:50,761 INFO L754 eck$LassoCheckResult]: Loop: 9#L11-2true assume !!(main_~x~0#1 > 0); 2#L12-2true assume !(main_~y~0#1 > 0); 6#L12-3true main_~x~0#1 := main_~x~0#1 - 1; 9#L11-2true [2022-07-22 01:31:50,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-07-22 01:31:50,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:50,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105289140] [2022-07-22 01:31:50,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:50,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:50,846 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:50,872 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:50,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash 40944, now seen corresponding path program 1 times [2022-07-22 01:31:50,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:50,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994194073] [2022-07-22 01:31:50,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:50,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:50,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:50,899 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:50,906 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:50,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash 28699886, now seen corresponding path program 1 times [2022-07-22 01:31:50,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:50,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335089101] [2022-07-22 01:31:50,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:50,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:50,922 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:50,935 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:51,036 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:51,036 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:51,037 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:51,037 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:51,037 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:31:51,037 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,037 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:51,037 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:51,038 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration1_Loop [2022-07-22 01:31:51,038 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:51,038 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:51,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,060 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,144 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:51,144 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:31:51,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:51,148 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) [2022-07-22 01:31:51,152 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:51,153 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:51,164 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 [2022-07-22 01:31:51,187 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 [2022-07-22 01:31:51,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:51,189 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) [2022-07-22 01:31:51,193 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 [2022-07-22 01:31:51,194 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:31:51,194 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:51,252 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:31:51,262 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 [2022-07-22 01:31:51,263 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:51,263 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:51,263 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:51,263 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:51,263 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:31:51,263 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,263 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:51,264 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:51,264 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration1_Loop [2022-07-22 01:31:51,264 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:51,264 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:51,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,276 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,348 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:51,352 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:31:51,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:51,355 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) [2022-07-22 01:31:51,356 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 [2022-07-22 01:31:51,357 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 [2022-07-22 01:31:51,365 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:51,365 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:31:51,366 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:51,366 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:31:51,366 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:51,368 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:31:51,368 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:31:51,371 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:31:51,377 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:31:51,378 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-22 01:31:51,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:51,381 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) [2022-07-22 01:31:51,385 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 [2022-07-22 01:31:51,385 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:31:51,385 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:31:51,386 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:31:51,386 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0#1) = 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2022-07-22 01:31:51,412 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 [2022-07-22 01:31:51,415 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:31:51,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:51,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:31:51,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:51,463 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:31:51,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:51,523 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2022-07-22 01:31:51,524 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-07-22 01:31:51,562 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 8 states have internal predecessors, (12), 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 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 24 states and 36 transitions. Complement of second has 7 states. [2022-07-22 01:31:51,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2022-07-22 01:31:51,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-07-22 01:31:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2022-07-22 01:31:51,571 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 3 letters. [2022-07-22 01:31:51,571 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:51,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 5 letters. Loop has 3 letters. [2022-07-22 01:31:51,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:51,572 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 6 letters. [2022-07-22 01:31:51,572 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:51,573 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 36 transitions. [2022-07-22 01:31:51,577 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-22 01:31:51,580 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 8 states and 11 transitions. [2022-07-22 01:31:51,581 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2022-07-22 01:31:51,581 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2022-07-22 01:31:51,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2022-07-22 01:31:51,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2022-07-22 01:31:51,582 INFO L369 hiAutomatonCegarLoop]: Abstraction has 8 states and 11 transitions. [2022-07-22 01:31:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2022-07-22 01:31:51,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-07-22 01:31:51,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 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) [2022-07-22 01:31:51,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2022-07-22 01:31:51,607 INFO L392 hiAutomatonCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-07-22 01:31:51,607 INFO L374 stractBuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2022-07-22 01:31:51,607 INFO L287 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2022-07-22 01:31:51,608 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2022-07-22 01:31:51,608 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2022-07-22 01:31:51,609 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-07-22 01:31:51,609 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-07-22 01:31:51,609 INFO L179 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2022-07-22 01:31:51,609 INFO L180 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2022-07-22 01:31:51,609 INFO L752 eck$LassoCheckResult]: Stem: 78#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 79#L-1 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_~c~0#1, main_~x~0#1, main_~y~0#1;havoc main_~c~0#1;havoc main_~x~0#1;havoc main_~y~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~c~0#1 := 0; 81#L11-2 assume !!(main_~x~0#1 > 0); 75#L12-2 [2022-07-22 01:31:51,610 INFO L754 eck$LassoCheckResult]: Loop: 75#L12-2 assume !!(main_~y~0#1 > 0);main_~y~0#1 := main_~y~0#1 - 1; 75#L12-2 [2022-07-22 01:31:51,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:51,611 INFO L85 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2022-07-22 01:31:51,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:51,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195913598] [2022-07-22 01:31:51,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:51,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:51,620 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:51,623 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:51,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash 51, now seen corresponding path program 1 times [2022-07-22 01:31:51,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:51,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207424276] [2022-07-22 01:31:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:51,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:51,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:51,631 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:51,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:51,637 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:51,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:51,637 INFO L85 PathProgramCache]: Analyzing trace with hash 925804, now seen corresponding path program 1 times [2022-07-22 01:31:51,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 01:31:51,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941018406] [2022-07-22 01:31:51,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 01:31:51,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 01:31:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:51,647 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 01:31:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 01:31:51,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 01:31:51,675 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:51,676 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:51,676 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:51,676 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:51,676 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2022-07-22 01:31:51,676 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,676 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:51,676 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:51,676 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration2_Loop [2022-07-22 01:31:51,676 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:51,676 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:51,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,684 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,745 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:51,745 INFO L404 LassoAnalysis]: Checking for nontermination... [2022-07-22 01:31:51,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:51,747 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) [2022-07-22 01:31:51,748 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 [2022-07-22 01:31:51,750 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:51,750 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:51,771 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:31:51,772 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:31:51,788 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 [2022-07-22 01:31:51,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:51,789 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2022-07-22 01:31:51,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2022-07-22 01:31:51,792 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:51,792 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:51,811 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2022-07-22 01:31:51,811 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2022-07-22 01:31:51,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2022-07-22 01:31:51,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:51,837 INFO L229 MonitoredProcess]: Starting monitored process 8 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) [2022-07-22 01:31:51,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2022-07-22 01:31:51,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:51,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2022-07-22 01:31:51,879 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2022-07-22 01:31:51,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:51,882 INFO L229 MonitoredProcess]: Starting monitored process 9 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) [2022-07-22 01:31:51,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2022-07-22 01:31:51,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2022-07-22 01:31:51,884 INFO L160 nArgumentSynthesizer]: Using integer mode. [2022-07-22 01:31:51,931 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2022-07-22 01:31:51,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:51,938 INFO L210 LassoAnalysis]: Preferences: [2022-07-22 01:31:51,938 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2022-07-22 01:31:51,938 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2022-07-22 01:31:51,938 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2022-07-22 01:31:51,938 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2022-07-22 01:31:51,939 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,939 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2022-07-22 01:31:51,939 INFO L132 ssoRankerPreferences]: Path of dumped script: [2022-07-22 01:31:51,939 INFO L133 ssoRankerPreferences]: Filename of dumped script: b.16.c_Iteration2_Loop [2022-07-22 01:31:51,939 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2022-07-22 01:31:51,939 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2022-07-22 01:31:51,940 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,947 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2022-07-22 01:31:51,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2022-07-22 01:31:51,996 INFO L294 LassoAnalysis]: Preprocessing complete. [2022-07-22 01:31:51,996 INFO L490 LassoAnalysis]: Using template 'affine'. [2022-07-22 01:31:51,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:51,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:52,000 INFO L229 MonitoredProcess]: Starting monitored process 10 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) [2022-07-22 01:31:52,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2022-07-22 01:31:52,010 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 [2022-07-22 01:31:52,017 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:52,017 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:52,017 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:31:52,017 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:52,021 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:31:52,022 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:31:52,043 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:31:52,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:52,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:52,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:52,064 INFO L229 MonitoredProcess]: Starting monitored process 11 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) [2022-07-22 01:31:52,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2022-07-22 01:31:52,066 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 [2022-07-22 01:31:52,072 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:52,073 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:52,073 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:31:52,073 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:52,076 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2022-07-22 01:31:52,076 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2022-07-22 01:31:52,087 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2022-07-22 01:31:52,102 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Ended with exit code 0 [2022-07-22 01:31:52,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:52,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:52,104 INFO L229 MonitoredProcess]: Starting monitored process 12 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) [2022-07-22 01:31:52,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2022-07-22 01:31:52,106 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 [2022-07-22 01:31:52,112 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2022-07-22 01:31:52,112 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2022-07-22 01:31:52,113 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2022-07-22 01:31:52,113 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2022-07-22 01:31:52,113 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2022-07-22 01:31:52,114 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2022-07-22 01:31:52,114 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2022-07-22 01:31:52,116 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2022-07-22 01:31:52,120 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2022-07-22 01:31:52,120 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2022-07-22 01:31:52,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-07-22 01:31:52,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 01:31:52,122 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2022-07-22 01:31:52,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2022-07-22 01:31:52,126 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2022-07-22 01:31:52,126 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2022-07-22 01:31:52,126 INFO L513 LassoAnalysis]: Proved termination. [2022-07-22 01:31:52,127 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1) = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2022-07-22 01:31:52,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Ended with exit code 0 [2022-07-22 01:31:52,143 INFO L293 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2022-07-22 01:31:52,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 01:31:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:52,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 01:31:52,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 01:31:52,173 WARN L261 TraceCheckSpWp]: Trace formula consists of 5 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 01:31:52,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 01:31:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 01:31:52,174 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2022-07-22 01:31:52,175 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-07-22 01:31:52,184 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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 14 states and 19 transitions. Complement of second has 4 states. [2022-07-22 01:31:52,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2022-07-22 01:31:52,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-07-22 01:31:52,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2022-07-22 01:31:52,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 1 letters. [2022-07-22 01:31:52,186 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:52,186 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 4 letters. Loop has 1 letters. [2022-07-22 01:31:52,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:52,187 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 3 letters. Loop has 2 letters. [2022-07-22 01:31:52,187 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2022-07-22 01:31:52,187 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2022-07-22 01:31:52,189 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:31:52,189 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 0 states and 0 transitions. [2022-07-22 01:31:52,189 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2022-07-22 01:31:52,189 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2022-07-22 01:31:52,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2022-07-22 01:31:52,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 01:31:52,189 INFO L369 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:31:52,189 INFO L392 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:31:52,189 INFO L374 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 01:31:52,190 INFO L287 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2022-07-22 01:31:52,190 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2022-07-22 01:31:52,190 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2022-07-22 01:31:52,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2022-07-22 01:31:52,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.07 01:31:52 BoogieIcfgContainer [2022-07-22 01:31:52,201 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-07-22 01:31:52,201 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 01:31:52,201 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 01:31:52,202 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 01:31:52,202 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:31:50" (3/4) ... [2022-07-22 01:31:52,206 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 01:31:52,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 01:31:52,208 INFO L158 Benchmark]: Toolchain (without parser) took 1949.53ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 45.6MB in the beginning and 57.8MB in the end (delta: -12.2MB). Peak memory consumption was 10.3MB. Max. memory is 16.1GB. [2022-07-22 01:31:52,208 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 65.0MB. Free memory was 46.8MB in the beginning and 46.8MB in the end (delta: 50.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:31:52,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 149.13ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 36.8MB in the end (delta: 8.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 01:31:52,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.06ms. Allocated memory is still 65.0MB. Free memory was 36.7MB in the beginning and 49.1MB in the end (delta: -12.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 01:31:52,209 INFO L158 Benchmark]: Boogie Preprocessor took 14.79ms. Allocated memory is still 65.0MB. Free memory was 49.1MB in the beginning and 48.3MB in the end (delta: 784.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:31:52,211 INFO L158 Benchmark]: RCFGBuilder took 186.62ms. Allocated memory is still 65.0MB. Free memory was 48.0MB in the beginning and 40.3MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 01:31:52,212 INFO L158 Benchmark]: BuchiAutomizer took 1528.58ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 40.3MB in the beginning and 58.4MB in the end (delta: -18.1MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-07-22 01:31:52,212 INFO L158 Benchmark]: Witness Printer took 6.06ms. Allocated memory is still 88.1MB. Free memory was 58.4MB in the beginning and 57.8MB in the end (delta: 601.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 01:31:52,214 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 65.0MB. Free memory was 46.8MB in the beginning and 46.8MB in the end (delta: 50.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 149.13ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 36.8MB in the end (delta: 8.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.06ms. Allocated memory is still 65.0MB. Free memory was 36.7MB in the beginning and 49.1MB in the end (delta: -12.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.79ms. Allocated memory is still 65.0MB. Free memory was 49.1MB in the beginning and 48.3MB in the end (delta: 784.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 186.62ms. Allocated memory is still 65.0MB. Free memory was 48.0MB in the beginning and 40.3MB in the end (delta: 7.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * BuchiAutomizer took 1528.58ms. Allocated memory was 65.0MB in the beginning and 88.1MB in the end (delta: 23.1MB). Free memory was 40.3MB in the beginning and 58.4MB in the end (delta: -18.1MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Witness Printer took 6.06ms. Allocated memory is still 88.1MB. Free memory was 58.4MB in the beginning and 57.8MB in the end (delta: 601.1kB). 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 2 terminating modules (0 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. 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 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 12 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax202 hnf100 lsp41 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 46ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2022-07-22 01:31:52,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2022-07-22 01:31:52,452 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE