./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 574ddb4e 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-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.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 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 09:40:12,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 09:40:12,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 09:40:12,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 09:40:12,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 09:40:12,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 09:40:12,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 09:40:12,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 09:40:12,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 09:40:12,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 09:40:12,933 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 09:40:12,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 09:40:12,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 09:40:12,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 09:40:12,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 09:40:12,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 09:40:12,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 09:40:12,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 09:40:12,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 09:40:12,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 09:40:12,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 09:40:12,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 09:40:12,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 09:40:12,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 09:40:12,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 09:40:12,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 09:40:12,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 09:40:12,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 09:40:12,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 09:40:12,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 09:40:12,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 09:40:12,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 09:40:12,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 09:40:12,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 09:40:12,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 09:40:12,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 09:40:12,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 09:40:12,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 09:40:12,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 09:40:12,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 09:40:12,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 09:40:12,963 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-17 09:40:12,983 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 09:40:12,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 09:40:12,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 09:40:12,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 09:40:12,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 09:40:12,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 09:40:12,990 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 09:40:12,990 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-17 09:40:12,990 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-17 09:40:12,990 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-17 09:40:12,991 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-17 09:40:12,991 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-17 09:40:12,991 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-17 09:40:12,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 09:40:12,992 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 09:40:12,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 09:40:12,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 09:40:12,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-17 09:40:12,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-17 09:40:12,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-17 09:40:12,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 09:40:12,993 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-17 09:40:12,993 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 09:40:12,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-17 09:40:12,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 09:40:12,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 09:40:12,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 09:40:12,993 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 09:40:12,995 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-17 09:40:12,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2023-02-17 09:40:13,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 09:40:13,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 09:40:13,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 09:40:13,227 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 09:40:13,228 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 09:40:13,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-17 09:40:14,194 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 09:40:14,323 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 09:40:14,323 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-17 09:40:14,327 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a4b9e23/a0d8a2dc1c6a4732b445b7ef3ff8ebdc/FLAGba6e06ecb [2023-02-17 09:40:14,336 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a4b9e23/a0d8a2dc1c6a4732b445b7ef3ff8ebdc [2023-02-17 09:40:14,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 09:40:14,338 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 09:40:14,339 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 09:40:14,339 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 09:40:14,342 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 09:40:14,343 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c456f48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14, skipping insertion in model container [2023-02-17 09:40:14,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 09:40:14,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 09:40:14,437 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:40:14,440 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 09:40:14,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 09:40:14,456 INFO L208 MainTranslator]: Completed translation [2023-02-17 09:40:14,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14 WrapperNode [2023-02-17 09:40:14,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 09:40:14,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 09:40:14,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 09:40:14,458 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 09:40:14,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,474 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-02-17 09:40:14,475 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 09:40:14,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 09:40:14,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 09:40:14,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 09:40:14,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,484 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,485 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 09:40:14,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 09:40:14,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 09:40:14,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 09:40:14,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (1/1) ... [2023-02-17 09:40:14,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:14,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:14,514 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) [2023-02-17 09:40:14,516 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 [2023-02-17 09:40:14,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 09:40:14,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 09:40:14,583 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 09:40:14,584 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 09:40:14,626 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 09:40:14,629 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 09:40:14,629 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 09:40:14,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:40:14 BoogieIcfgContainer [2023-02-17 09:40:14,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 09:40:14,631 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-17 09:40:14,631 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-17 09:40:14,633 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-17 09:40:14,634 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 09:40:14,634 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.02 09:40:14" (1/3) ... [2023-02-17 09:40:14,635 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@243d1aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 09:40:14, skipping insertion in model container [2023-02-17 09:40:14,635 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 09:40:14,635 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 09:40:14" (2/3) ... [2023-02-17 09:40:14,635 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@243d1aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.02 09:40:14, skipping insertion in model container [2023-02-17 09:40:14,635 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-17 09:40:14,635 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:40:14" (3/3) ... [2023-02-17 09:40:14,636 INFO L332 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-17 09:40:14,666 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-17 09:40:14,666 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-17 09:40:14,666 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-17 09:40:14,667 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-17 09:40:14,667 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-17 09:40:14,667 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-17 09:40:14,667 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-17 09:40:14,667 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-17 09:40:14,670 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2023-02-17 09:40:14,679 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-17 09:40:14,679 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 09:40:14,679 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 09:40:14,682 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-17 09:40:14,682 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-17 09:40:14,683 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-17 09:40:14,683 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2023-02-17 09:40:14,684 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-17 09:40:14,684 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 09:40:14,684 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 09:40:14,684 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-17 09:40:14,684 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-17 09:40:14,713 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 5#L21true assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 8#L22-2true [2023-02-17 09:40:14,714 INFO L750 eck$LassoCheckResult]: Loop: 8#L22-2true assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 3#L24-2true assume !(main_~y~0#1 < main_~z~0#1); 9#L24-3true main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 8#L22-2true [2023-02-17 09:40:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:14,734 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-17 09:40:14,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:14,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307119329] [2023-02-17 09:40:14,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:14,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:14,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:14,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:14,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash 43923, now seen corresponding path program 1 times [2023-02-17 09:40:14,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:14,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271007498] [2023-02-17 09:40:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:14,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:14,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:14,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:14,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash 889513810, now seen corresponding path program 1 times [2023-02-17 09:40:14,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:14,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527305799] [2023-02-17 09:40:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:14,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:14,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:14,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:14,924 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:14,925 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:14,925 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:14,926 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:14,926 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 09:40:14,926 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:14,926 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:14,926 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:14,926 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2023-02-17 09:40:14,926 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:14,927 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:14,939 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:14,946 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:14,948 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:14,960 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:14,961 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 09:40:14,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:14,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:14,964 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) [2023-02-17 09:40:14,966 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 [2023-02-17 09:40:14,968 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:14,968 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:14,989 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 09:40:14,990 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 09:40:14,998 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 [2023-02-17 09:40:14,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:14,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,000 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) [2023-02-17 09:40:15,010 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 [2023-02-17 09:40:15,010 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:15,010 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:15,037 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 09:40:15,037 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 09:40:15,059 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 [2023-02-17 09:40:15,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,066 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) [2023-02-17 09:40:15,068 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 [2023-02-17 09:40:15,071 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:15,071 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:15,099 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 [2023-02-17 09:40:15,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,101 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) [2023-02-17 09:40:15,101 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 [2023-02-17 09:40:15,103 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 09:40:15,103 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:15,263 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 09:40:15,267 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 [2023-02-17 09:40:15,268 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:15,268 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:15,268 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:15,268 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:15,268 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 09:40:15,268 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,268 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:15,268 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:15,268 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2023-02-17 09:40:15,268 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:15,268 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:15,270 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:15,278 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:15,279 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:15,292 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:15,295 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 09:40:15,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,305 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) [2023-02-17 09:40:15,308 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 [2023-02-17 09:40:15,311 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 [2023-02-17 09:40:15,322 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:15,323 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:15,323 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:15,323 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:15,327 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 09:40:15,327 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 09:40:15,349 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:15,355 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 [2023-02-17 09:40:15,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,356 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) [2023-02-17 09:40:15,367 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 [2023-02-17 09:40:15,367 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 [2023-02-17 09:40:15,374 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:15,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:15,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:15,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:15,376 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 09:40:15,376 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 09:40:15,397 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:15,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:15,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,406 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) [2023-02-17 09:40:15,407 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 [2023-02-17 09:40:15,409 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 [2023-02-17 09:40:15,416 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:15,416 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 09:40:15,416 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:15,416 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:15,416 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:15,418 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 09:40:15,418 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 09:40:15,427 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:15,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:15,430 INFO L490 LassoAnalysis]: Using template '2-nested'. [2023-02-17 09:40:15,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,432 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) [2023-02-17 09:40:15,434 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 [2023-02-17 09:40:15,435 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 [2023-02-17 09:40:15,442 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:15,442 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:15,442 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:15,443 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-17 09:40:15,448 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2023-02-17 09:40:15,448 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2023-02-17 09:40:15,464 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:15,480 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 [2023-02-17 09:40:15,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,482 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) [2023-02-17 09:40:15,483 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 [2023-02-17 09:40:15,485 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 [2023-02-17 09:40:15,491 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:15,492 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:15,492 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:15,492 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-17 09:40:15,494 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2023-02-17 09:40:15,494 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2023-02-17 09:40:15,505 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:15,511 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 [2023-02-17 09:40:15,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,512 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) [2023-02-17 09:40:15,515 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 [2023-02-17 09:40:15,515 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 [2023-02-17 09:40:15,522 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:15,522 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 09:40:15,522 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:15,522 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:15,522 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-17 09:40:15,524 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2023-02-17 09:40:15,524 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 09:40:15,533 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 09:40:15,538 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-17 09:40:15,538 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. [2023-02-17 09:40:15,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,542 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) [2023-02-17 09:40:15,546 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 [2023-02-17 09:40:15,547 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 09:40:15,547 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 09:40:15,547 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 09:40:15,547 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 Supporting invariants [] [2023-02-17 09:40:15,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:15,554 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 09:40:15,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:15,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 09:40:15,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:15,593 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:40:15,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:15,684 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-17 09:40:15,686 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 09:40:15,722 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 35 states and 48 transitions. Complement of second has 8 states. [2023-02-17 09:40:15,724 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 [2023-02-17 09:40:15,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 09:40:15,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2023-02-17 09:40:15,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 3 letters. [2023-02-17 09:40:15,729 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:15,729 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 6 letters. Loop has 3 letters. [2023-02-17 09:40:15,730 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:15,730 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 6 letters. [2023-02-17 09:40:15,731 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:15,731 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2023-02-17 09:40:15,734 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-17 09:40:15,736 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 11 states and 15 transitions. [2023-02-17 09:40:15,737 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-02-17 09:40:15,737 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-17 09:40:15,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2023-02-17 09:40:15,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 09:40:15,737 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 15 transitions. [2023-02-17 09:40:15,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2023-02-17 09:40:15,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-17 09:40:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 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) [2023-02-17 09:40:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2023-02-17 09:40:15,752 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 15 transitions. [2023-02-17 09:40:15,752 INFO L428 stractBuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2023-02-17 09:40:15,753 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-17 09:40:15,753 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2023-02-17 09:40:15,753 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-17 09:40:15,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 09:40:15,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 09:40:15,754 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-02-17 09:40:15,754 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-17 09:40:15,754 INFO L748 eck$LassoCheckResult]: Stem: 99#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 100#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~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_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 97#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 98#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 93#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 94#L24-2 [2023-02-17 09:40:15,754 INFO L750 eck$LassoCheckResult]: Loop: 94#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 94#L24-2 [2023-02-17 09:40:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash 28693995, now seen corresponding path program 1 times [2023-02-17 09:40:15,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:15,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024288547] [2023-02-17 09:40:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:15,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:15,760 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:15,763 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:15,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:15,764 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2023-02-17 09:40:15,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:15,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101365706] [2023-02-17 09:40:15,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:15,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:15,767 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:15,769 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:15,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:15,769 INFO L85 PathProgramCache]: Analyzing trace with hash 889513868, now seen corresponding path program 2 times [2023-02-17 09:40:15,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:15,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449042129] [2023-02-17 09:40:15,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:15,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:15,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:15,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:15,780 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:15,780 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:15,780 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:15,781 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:15,781 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 09:40:15,781 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,781 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:15,781 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:15,781 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2023-02-17 09:40:15,781 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:15,781 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:15,782 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:15,783 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:15,784 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:15,785 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:15,787 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:15,787 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 09:40:15,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,788 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) [2023-02-17 09:40:15,795 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:15,795 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:15,804 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 [2023-02-17 09:40:15,806 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 09:40:15,806 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: [] [2023-02-17 09:40:15,809 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 [2023-02-17 09:40:15,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,810 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-02-17 09:40:15,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2023-02-17 09:40:15,815 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:15,815 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:15,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:15,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,852 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-02-17 09:40:15,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2023-02-17 09:40:15,855 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 09:40:15,856 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:15,878 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 09:40:15,878 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0#1=0} Honda state: {ULTIMATE.start_main_~x~0#1=0} Generalized eigenvectors: [{ULTIMATE.start_main_~x~0#1=-2}, {ULTIMATE.start_main_~x~0#1=-2}, {ULTIMATE.start_main_~x~0#1=5}] Lambdas: [1, 1, 1] Nus: [0, 0] [2023-02-17 09:40:15,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Ended with exit code 0 [2023-02-17 09:40:15,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,899 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-02-17 09:40:15,921 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:15,921 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:15,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2023-02-17 09:40:15,937 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 09:40:15,937 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: [] [2023-02-17 09:40:15,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:15,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,944 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-02-17 09:40:15,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2023-02-17 09:40:15,947 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:15,947 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:15,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:15,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:15,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:15,977 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-02-17 09:40:15,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2023-02-17 09:40:15,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 09:40:15,980 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:16,096 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 09:40:16,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Ended with exit code 0 [2023-02-17 09:40:16,102 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:16,102 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:16,102 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:16,102 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:16,102 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 09:40:16,102 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,108 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:16,108 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:16,108 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2023-02-17 09:40:16,108 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:16,108 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:16,109 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:16,110 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:16,113 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:16,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:16,123 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:16,126 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:16,130 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 09:40:16,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,132 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-02-17 09:40:16,139 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 [2023-02-17 09:40:16,145 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:16,145 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:16,145 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:16,145 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:16,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2023-02-17 09:40:16,168 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 09:40:16,168 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 09:40:16,190 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:16,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:16,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,196 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-02-17 09:40:16,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2023-02-17 09:40:16,201 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 [2023-02-17 09:40:16,207 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:16,207 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 09:40:16,207 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:16,207 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:16,207 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:16,207 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 09:40:16,208 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 09:40:16,223 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:16,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:16,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,229 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-02-17 09:40:16,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2023-02-17 09:40:16,231 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 [2023-02-17 09:40:16,237 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:16,237 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:16,237 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:16,237 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:16,239 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 09:40:16,239 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 09:40:16,249 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:16,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:16,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,255 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-02-17 09:40:16,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2023-02-17 09:40:16,265 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 [2023-02-17 09:40:16,272 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:16,272 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 09:40:16,272 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:16,272 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:16,272 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:16,273 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 09:40:16,273 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 09:40:16,288 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 09:40:16,292 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-17 09:40:16,292 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-17 09:40:16,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,294 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-02-17 09:40:16,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2023-02-17 09:40:16,297 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 09:40:16,297 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 09:40:16,297 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 09:40:16,297 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~z~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2023-02-17 09:40:16,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Ended with exit code 0 [2023-02-17 09:40:16,301 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 09:40:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:16,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 09:40:16,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:16,325 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 09:40:16,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:16,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:16,327 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-17 09:40:16,327 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 6 Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-17 09:40:16,341 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 15 transitions. cyclomatic complexity: 6. Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 18 states and 29 transitions. Complement of second has 6 states. [2023-02-17 09:40:16,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2023-02-17 09:40:16,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-17 09:40:16,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-02-17 09:40:16,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 1 letters. [2023-02-17 09:40:16,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:16,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 1 letters. [2023-02-17 09:40:16,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:16,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-17 09:40:16,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:16,343 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 29 transitions. [2023-02-17 09:40:16,351 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-17 09:40:16,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 20 transitions. [2023-02-17 09:40:16,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-02-17 09:40:16,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-17 09:40:16,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2023-02-17 09:40:16,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 09:40:16,353 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2023-02-17 09:40:16,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2023-02-17 09:40:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-02-17 09:40:16,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 12 states have internal predecessors, (19), 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) [2023-02-17 09:40:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2023-02-17 09:40:16,356 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-02-17 09:40:16,356 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-02-17 09:40:16,356 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-17 09:40:16,356 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2023-02-17 09:40:16,359 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-17 09:40:16,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 09:40:16,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 09:40:16,361 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-02-17 09:40:16,361 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-17 09:40:16,361 INFO L748 eck$LassoCheckResult]: Stem: 165#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 166#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 163#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 164#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 169#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 172#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 161#L24-3 [2023-02-17 09:40:16,362 INFO L750 eck$LassoCheckResult]: Loop: 161#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 167#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 160#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 161#L24-3 [2023-02-17 09:40:16,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:16,362 INFO L85 PathProgramCache]: Analyzing trace with hash 889513866, now seen corresponding path program 1 times [2023-02-17 09:40:16,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:16,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253627504] [2023-02-17 09:40:16,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:16,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:16,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:16,379 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:16,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:16,379 INFO L85 PathProgramCache]: Analyzing trace with hash 56193, now seen corresponding path program 2 times [2023-02-17 09:40:16,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:16,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200839250] [2023-02-17 09:40:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:16,382 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:16,384 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:16,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:16,385 INFO L85 PathProgramCache]: Analyzing trace with hash -440607912, now seen corresponding path program 1 times [2023-02-17 09:40:16,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:16,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461125943] [2023-02-17 09:40:16,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:16,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:16,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:16,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:16,395 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:16,395 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:16,395 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:16,395 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:16,395 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 09:40:16,396 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,396 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:16,396 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:16,396 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2023-02-17 09:40:16,396 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:16,396 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:16,397 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:16,398 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:16,399 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:16,401 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:16,401 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 09:40:16,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,404 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-02-17 09:40:16,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2023-02-17 09:40:16,407 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:16,407 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:16,428 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 09:40:16,429 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 09:40:16,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Ended with exit code 0 [2023-02-17 09:40:16,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,434 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-02-17 09:40:16,442 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:16,442 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:16,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2023-02-17 09:40:16,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Ended with exit code 0 [2023-02-17 09:40:16,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,460 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-02-17 09:40:16,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Waiting until timeout for monitored process [2023-02-17 09:40:16,463 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 09:40:16,463 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:16,581 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 09:40:16,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Ended with exit code 0 [2023-02-17 09:40:16,585 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:16,585 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:16,585 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:16,585 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:16,585 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 09:40:16,585 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,585 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:16,585 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:16,585 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2023-02-17 09:40:16,585 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:16,585 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:16,586 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:16,588 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:16,589 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:16,591 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:16,591 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 09:40:16,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,594 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-02-17 09:40:16,601 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 [2023-02-17 09:40:16,607 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:16,607 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:16,607 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:16,607 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:16,608 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 09:40:16,608 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 09:40:16,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2023-02-17 09:40:16,629 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:16,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:16,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,633 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-02-17 09:40:16,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2023-02-17 09:40:16,636 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 [2023-02-17 09:40:16,642 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:16,643 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 09:40:16,643 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:16,643 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:16,643 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:16,644 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 09:40:16,644 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 09:40:16,658 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:16,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:16,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,676 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-02-17 09:40:16,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2023-02-17 09:40:16,679 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 [2023-02-17 09:40:16,685 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:16,686 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:16,686 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:16,686 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:16,687 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 09:40:16,687 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 09:40:16,702 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:16,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:16,717 INFO L490 LassoAnalysis]: Using template '2-nested'. [2023-02-17 09:40:16,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,718 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-02-17 09:40:16,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2023-02-17 09:40:16,721 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 [2023-02-17 09:40:16,728 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:16,728 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:16,728 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:16,728 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-17 09:40:16,733 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2023-02-17 09:40:16,733 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2023-02-17 09:40:16,748 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:16,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2023-02-17 09:40:16,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,752 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-02-17 09:40:16,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Waiting until timeout for monitored process [2023-02-17 09:40:16,755 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 [2023-02-17 09:40:16,761 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:16,761 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 09:40:16,762 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:16,762 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:16,762 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-17 09:40:16,763 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2023-02-17 09:40:16,763 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 09:40:16,778 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 09:40:16,781 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-17 09:40:16,782 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-17 09:40:16,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:16,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,783 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-02-17 09:40:16,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2023-02-17 09:40:16,785 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 09:40:16,785 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 09:40:16,785 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 09:40:16,785 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-02-17 09:40:16,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (31)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:16,789 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 09:40:16,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:16,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 09:40:16,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:16,810 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:40:16,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:16,855 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-17 09:40:16,855 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9 Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-02-17 09:40:16,873 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 13 states and 19 transitions. cyclomatic complexity: 9. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 31 states and 46 transitions. Complement of second has 8 states. [2023-02-17 09:40:16,874 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 [2023-02-17 09:40:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2023-02-17 09:40:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2023-02-17 09:40:16,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 3 letters. [2023-02-17 09:40:16,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:16,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-17 09:40:16,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:16,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 6 letters. [2023-02-17 09:40:16,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:16,875 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 46 transitions. [2023-02-17 09:40:16,876 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-17 09:40:16,876 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 23 states and 34 transitions. [2023-02-17 09:40:16,876 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-02-17 09:40:16,877 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-17 09:40:16,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 34 transitions. [2023-02-17 09:40:16,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 09:40:16,877 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 34 transitions. [2023-02-17 09:40:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 34 transitions. [2023-02-17 09:40:16,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-02-17 09:40:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 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) [2023-02-17 09:40:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2023-02-17 09:40:16,879 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 27 transitions. [2023-02-17 09:40:16,879 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2023-02-17 09:40:16,879 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-17 09:40:16,879 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2023-02-17 09:40:16,880 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-17 09:40:16,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 09:40:16,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 09:40:16,880 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-02-17 09:40:16,880 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-17 09:40:16,880 INFO L748 eck$LassoCheckResult]: Stem: 266#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 267#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~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_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 264#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 265#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 275#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 277#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 274#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 259#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 260#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 271#L24-3 [2023-02-17 09:40:16,880 INFO L750 eck$LassoCheckResult]: Loop: 271#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 268#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 263#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 271#L24-3 [2023-02-17 09:40:16,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:16,880 INFO L85 PathProgramCache]: Analyzing trace with hash -442288422, now seen corresponding path program 2 times [2023-02-17 09:40:16,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:16,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708498095] [2023-02-17 09:40:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:16,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:16,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:16,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:16,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:16,889 INFO L85 PathProgramCache]: Analyzing trace with hash 56193, now seen corresponding path program 3 times [2023-02-17 09:40:16,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:16,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331895077] [2023-02-17 09:40:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:16,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:16,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:16,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:16,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash 745310728, now seen corresponding path program 3 times [2023-02-17 09:40:16,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:16,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497467320] [2023-02-17 09:40:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:16,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:16,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 09:40:16,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497467320] [2023-02-17 09:40:16,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497467320] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 09:40:16,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13134091] [2023-02-17 09:40:16,968 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 09:40:16,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 09:40:16,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:16,970 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 09:40:16,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-02-17 09:40:16,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-17 09:40:16,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 09:40:16,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 09:40:16,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:17,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:17,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 09:40:17,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:17,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13134091] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 09:40:17,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 09:40:17,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-02-17 09:40:17,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83187947] [2023-02-17 09:40:17,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 09:40:17,039 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:17,039 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:17,039 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:17,039 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:17,039 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 09:40:17,039 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,039 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:17,039 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:17,040 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2023-02-17 09:40:17,040 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:17,040 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:17,040 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:17,041 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:17,042 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:17,043 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:17,043 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 09:40:17,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,046 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-02-17 09:40:17,049 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:17,049 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:17,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2023-02-17 09:40:17,066 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 09:40:17,066 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 09:40:17,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,074 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-02-17 09:40:17,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2023-02-17 09:40:17,077 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:17,077 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:17,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,089 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-02-17 09:40:17,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Waiting until timeout for monitored process [2023-02-17 09:40:17,092 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 09:40:17,092 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:17,253 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 09:40:17,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (36)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,259 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:17,260 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:17,260 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:17,260 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:17,260 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 09:40:17,260 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,260 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:17,260 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:17,260 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2023-02-17 09:40:17,260 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:17,260 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:17,261 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:17,264 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:17,265 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:17,269 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:17,269 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 09:40:17,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,270 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-02-17 09:40:17,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Waiting until timeout for monitored process [2023-02-17 09:40:17,273 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 [2023-02-17 09:40:17,279 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:17,279 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 09:40:17,280 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:17,280 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:17,280 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:17,281 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 09:40:17,281 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 09:40:17,292 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:17,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (37)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,301 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-02-17 09:40:17,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Waiting until timeout for monitored process [2023-02-17 09:40:17,304 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 [2023-02-17 09:40:17,310 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:17,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:17,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:17,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:17,312 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 09:40:17,312 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 09:40:17,322 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:17,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,328 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-02-17 09:40:17,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Waiting until timeout for monitored process [2023-02-17 09:40:17,331 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 [2023-02-17 09:40:17,338 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:17,338 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:17,338 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:17,338 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:17,339 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 09:40:17,339 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 09:40:17,354 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:17,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (39)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,359 INFO L490 LassoAnalysis]: Using template '2-nested'. [2023-02-17 09:40:17,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,361 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-02-17 09:40:17,371 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 [2023-02-17 09:40:17,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Waiting until timeout for monitored process [2023-02-17 09:40:17,377 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:17,377 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 09:40:17,378 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:17,378 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:17,378 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-17 09:40:17,379 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2023-02-17 09:40:17,379 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 09:40:17,394 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 09:40:17,399 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2023-02-17 09:40:17,399 INFO L444 ModelExtractionUtils]: 2 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. [2023-02-17 09:40:17,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,401 INFO L229 MonitoredProcess]: Starting monitored process 41 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) [2023-02-17 09:40:17,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Waiting until timeout for monitored process [2023-02-17 09:40:17,404 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 09:40:17,404 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 09:40:17,404 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 09:40:17,412 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0#1 f1 = 1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~x~0#1 Supporting invariants [] [2023-02-17 09:40:17,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (40)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,420 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 09:40:17,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Ended with exit code 0 [2023-02-17 09:40:17,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:17,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 09:40:17,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:17,448 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:40:17,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:17,493 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-17 09:40:17,493 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:40:17,513 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 28 states and 40 transitions. Complement of second has 7 states. [2023-02-17 09:40:17,513 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 [2023-02-17 09:40:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:40:17,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-02-17 09:40:17,515 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-17 09:40:17,515 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:17,515 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-17 09:40:17,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:17,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 09:40:17,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:17,539 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:40:17,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:17,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:17,581 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-17 09:40:17,581 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:40:17,604 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 25 states and 34 transitions. Complement of second has 7 states. [2023-02-17 09:40:17,604 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 [2023-02-17 09:40:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:40:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-02-17 09:40:17,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-17 09:40:17,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:17,606 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-17 09:40:17,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:17,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 09:40:17,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:17,628 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 09:40:17,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:17,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:17,651 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2023-02-17 09:40:17,651 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13 Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:40:17,668 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 27 transitions. cyclomatic complexity: 13. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 37 states and 53 transitions. Complement of second has 7 states. [2023-02-17 09:40:17,669 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 [2023-02-17 09:40:17,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 09:40:17,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2023-02-17 09:40:17,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-17 09:40:17,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:17,671 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 12 letters. Loop has 3 letters. [2023-02-17 09:40:17,672 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:17,672 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 9 letters. Loop has 6 letters. [2023-02-17 09:40:17,673 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:17,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 53 transitions. [2023-02-17 09:40:17,674 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-17 09:40:17,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 25 states and 35 transitions. [2023-02-17 09:40:17,675 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-02-17 09:40:17,675 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-02-17 09:40:17,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 35 transitions. [2023-02-17 09:40:17,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 09:40:17,675 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 35 transitions. [2023-02-17 09:40:17,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 35 transitions. [2023-02-17 09:40:17,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2023-02-17 09:40:17,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 16 states have (on average 1.375) internal successors, (22), 15 states have internal predecessors, (22), 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) [2023-02-17 09:40:17,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2023-02-17 09:40:17,678 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 22 transitions. [2023-02-17 09:40:17,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 09:40:17,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-17 09:40:17,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-17 09:40:17,681 INFO L87 Difference]: Start difference. First operand 16 states and 22 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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) [2023-02-17 09:40:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 09:40:17,730 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2023-02-17 09:40:17,730 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2023-02-17 09:40:17,732 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-17 09:40:17,733 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 29 transitions. [2023-02-17 09:40:17,733 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-02-17 09:40:17,733 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-17 09:40:17,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 29 transitions. [2023-02-17 09:40:17,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 09:40:17,733 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-02-17 09:40:17,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 29 transitions. [2023-02-17 09:40:17,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-02-17 09:40:17,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.35) internal successors, (27), 19 states have internal predecessors, (27), 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) [2023-02-17 09:40:17,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2023-02-17 09:40:17,736 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 27 transitions. [2023-02-17 09:40:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 09:40:17,737 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2023-02-17 09:40:17,737 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-17 09:40:17,737 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 27 transitions. [2023-02-17 09:40:17,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-17 09:40:17,738 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 09:40:17,738 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 09:40:17,738 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-02-17 09:40:17,738 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-17 09:40:17,738 INFO L748 eck$LassoCheckResult]: Stem: 649#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 650#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 647#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 648#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 643#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 644#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 657#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 656#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 662#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 659#L24-2 [2023-02-17 09:40:17,738 INFO L750 eck$LassoCheckResult]: Loop: 659#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 659#L24-2 [2023-02-17 09:40:17,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:17,739 INFO L85 PathProgramCache]: Analyzing trace with hash -440607910, now seen corresponding path program 4 times [2023-02-17 09:40:17,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:17,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704555171] [2023-02-17 09:40:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:17,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:17,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:17,767 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:17,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:17,767 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 2 times [2023-02-17 09:40:17,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:17,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974745607] [2023-02-17 09:40:17,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:17,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:17,769 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:17,771 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:17,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:17,771 INFO L85 PathProgramCache]: Analyzing trace with hash -773943299, now seen corresponding path program 5 times [2023-02-17 09:40:17,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:17,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832509354] [2023-02-17 09:40:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:17,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:17,775 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:17,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:17,780 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:17,780 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:17,780 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:17,780 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:17,780 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 09:40:17,780 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,780 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:17,780 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:17,780 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2023-02-17 09:40:17,780 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:17,781 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:17,781 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:17,782 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:17,782 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:17,783 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:17,785 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:17,785 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 09:40:17,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,799 INFO L229 MonitoredProcess]: Starting monitored process 42 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) [2023-02-17 09:40:17,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Waiting until timeout for monitored process [2023-02-17 09:40:17,801 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:17,801 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:17,829 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 09:40:17,829 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 09:40:17,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (42)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,836 INFO L229 MonitoredProcess]: Starting monitored process 43 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) [2023-02-17 09:40:17,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:17,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:17,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Waiting until timeout for monitored process [2023-02-17 09:40:17,865 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 09:40:17,865 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 09:40:17,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,870 INFO L229 MonitoredProcess]: Starting monitored process 44 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) [2023-02-17 09:40:17,877 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:17,877 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:17,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Waiting until timeout for monitored process [2023-02-17 09:40:17,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (44)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:17,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:17,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:17,899 INFO L229 MonitoredProcess]: Starting monitored process 45 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) [2023-02-17 09:40:17,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Waiting until timeout for monitored process [2023-02-17 09:40:17,903 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 09:40:17,903 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:18,023 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 09:40:18,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Ended with exit code 0 [2023-02-17 09:40:18,027 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:18,027 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:18,027 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:18,027 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:18,027 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 09:40:18,027 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,027 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:18,027 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:18,027 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2023-02-17 09:40:18,027 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:18,027 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:18,028 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:18,030 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:18,030 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:18,031 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:18,034 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:18,034 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 09:40:18,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:18,036 INFO L229 MonitoredProcess]: Starting monitored process 46 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) [2023-02-17 09:40:18,041 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 [2023-02-17 09:40:18,047 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:18,048 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:18,048 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:18,048 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:18,050 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 09:40:18,050 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 09:40:18,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Waiting until timeout for monitored process [2023-02-17 09:40:18,061 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:18,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:18,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:18,065 INFO L229 MonitoredProcess]: Starting monitored process 47 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) [2023-02-17 09:40:18,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Waiting until timeout for monitored process [2023-02-17 09:40:18,068 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 [2023-02-17 09:40:18,074 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:18,074 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:18,074 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:18,074 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:18,075 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 09:40:18,075 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 09:40:18,085 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:18,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (47)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:18,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:18,090 INFO L229 MonitoredProcess]: Starting monitored process 48 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) [2023-02-17 09:40:18,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Waiting until timeout for monitored process [2023-02-17 09:40:18,152 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 [2023-02-17 09:40:18,159 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:18,159 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 09:40:18,159 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:18,159 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:18,159 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:18,160 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 09:40:18,160 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 09:40:18,174 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 09:40:18,177 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-17 09:40:18,177 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-17 09:40:18,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:18,178 INFO L229 MonitoredProcess]: Starting monitored process 49 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) [2023-02-17 09:40:18,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Waiting until timeout for monitored process [2023-02-17 09:40:18,182 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 09:40:18,182 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 09:40:18,182 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 09:40:18,182 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0#1, ULTIMATE.start_main_~z~0#1) = -1*ULTIMATE.start_main_~y~0#1 + 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2023-02-17 09:40:18,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:18,186 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 09:40:18,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:18,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 09:40:18,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:18,204 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 09:40:18,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:18,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:18,205 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-17 09:40:18,205 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-02-17 09:40:18,212 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 23 states and 31 transitions. Complement of second has 5 states. [2023-02-17 09:40:18,212 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 [2023-02-17 09:40:18,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-02-17 09:40:18,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-17 09:40:18,213 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-17 09:40:18,213 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:18,213 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-17 09:40:18,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:18,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 09:40:18,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:18,229 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 09:40:18,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:18,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:18,229 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-17 09:40:18,229 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-02-17 09:40:18,234 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 23 states and 31 transitions. Complement of second has 5 states. [2023-02-17 09:40:18,235 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 [2023-02-17 09:40:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-02-17 09:40:18,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-17 09:40:18,235 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-17 09:40:18,235 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:18,235 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-17 09:40:18,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:18,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 09:40:18,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:18,253 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-17 09:40:18,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:18,254 INFO L141 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2023-02-17 09:40:18,254 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12 Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-02-17 09:40:18,259 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states and 27 transitions. cyclomatic complexity: 12. Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 25 states and 35 transitions. Complement of second has 4 states. [2023-02-17 09:40:18,260 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 [2023-02-17 09:40:18,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-02-17 09:40:18,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-02-17 09:40:18,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-17 09:40:18,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:18,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 1 letters. [2023-02-17 09:40:18,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:18,261 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2023-02-17 09:40:18,261 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:18,261 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 35 transitions. [2023-02-17 09:40:18,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-17 09:40:18,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 22 states and 30 transitions. [2023-02-17 09:40:18,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-02-17 09:40:18,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-17 09:40:18,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 30 transitions. [2023-02-17 09:40:18,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-17 09:40:18,262 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-02-17 09:40:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 30 transitions. [2023-02-17 09:40:18,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2023-02-17 09:40:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 19 states have (on average 1.368421052631579) internal successors, (26), 18 states have internal predecessors, (26), 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) [2023-02-17 09:40:18,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2023-02-17 09:40:18,263 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 26 transitions. [2023-02-17 09:40:18,263 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2023-02-17 09:40:18,263 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-02-17 09:40:18,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2023-02-17 09:40:18,263 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-17 09:40:18,263 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-17 09:40:18,263 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-17 09:40:18,264 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-02-17 09:40:18,264 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-17 09:40:18,264 INFO L748 eck$LassoCheckResult]: Stem: 856#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 857#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_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~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_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 854#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 855#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 850#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 851#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 853#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 868#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 867#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 865#L24-2 [2023-02-17 09:40:18,264 INFO L750 eck$LassoCheckResult]: Loop: 865#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 858#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 859#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 866#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 865#L24-2 [2023-02-17 09:40:18,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:18,264 INFO L85 PathProgramCache]: Analyzing trace with hash -440607910, now seen corresponding path program 6 times [2023-02-17 09:40:18,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:18,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422249004] [2023-02-17 09:40:18,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:18,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:18,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:18,270 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:18,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:18,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1575536, now seen corresponding path program 1 times [2023-02-17 09:40:18,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:18,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809194714] [2023-02-17 09:40:18,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:18,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:18,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:18,273 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:18,274 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1160408759, now seen corresponding path program 7 times [2023-02-17 09:40:18,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 09:40:18,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369588560] [2023-02-17 09:40:18,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 09:40:18,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 09:40:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:18,278 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 09:40:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 09:40:18,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 09:40:18,285 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:18,285 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:18,285 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:18,285 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:18,285 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-17 09:40:18,285 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,285 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:18,285 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:18,285 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2023-02-17 09:40:18,285 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:18,285 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:18,285 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:18,286 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:18,287 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:18,288 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:18,289 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-17 09:40:18,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:18,290 INFO L229 MonitoredProcess]: Starting monitored process 50 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) [2023-02-17 09:40:18,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Waiting until timeout for monitored process [2023-02-17 09:40:18,293 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:18,293 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:18,327 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 09:40:18,327 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 09:40:18,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:18,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:18,332 INFO L229 MonitoredProcess]: Starting monitored process 51 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) [2023-02-17 09:40:18,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Waiting until timeout for monitored process [2023-02-17 09:40:18,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:18,337 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:18,357 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-17 09:40:18,358 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2023-02-17 09:40:18,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (51)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:18,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:18,362 INFO L229 MonitoredProcess]: Starting monitored process 52 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) [2023-02-17 09:40:18,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Waiting until timeout for monitored process [2023-02-17 09:40:18,365 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-17 09:40:18,365 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:18,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (52)] Ended with exit code 0 [2023-02-17 09:40:18,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:18,385 INFO L229 MonitoredProcess]: Starting monitored process 53 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) [2023-02-17 09:40:18,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Waiting until timeout for monitored process [2023-02-17 09:40:18,388 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-17 09:40:18,388 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-17 09:40:18,518 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-17 09:40:18,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Ended with exit code 0 [2023-02-17 09:40:18,522 INFO L210 LassoAnalysis]: Preferences: [2023-02-17 09:40:18,522 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-17 09:40:18,522 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-17 09:40:18,522 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-17 09:40:18,522 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-17 09:40:18,522 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,522 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-17 09:40:18,522 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-17 09:40:18,522 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2023-02-17 09:40:18,522 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-17 09:40:18,522 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-17 09:40:18,523 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:18,529 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:18,530 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-17 09:40:18,532 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-17 09:40:18,532 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-17 09:40:18,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:18,533 INFO L229 MonitoredProcess]: Starting monitored process 54 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) [2023-02-17 09:40:18,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Waiting until timeout for monitored process [2023-02-17 09:40:18,536 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 [2023-02-17 09:40:18,542 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:18,542 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:18,542 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:18,542 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:18,543 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-17 09:40:18,543 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-17 09:40:18,558 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-17 09:40:18,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (54)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:18,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:18,562 INFO L229 MonitoredProcess]: Starting monitored process 55 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) [2023-02-17 09:40:18,569 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 [2023-02-17 09:40:18,575 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-17 09:40:18,575 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-17 09:40:18,576 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-17 09:40:18,576 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-17 09:40:18,576 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-17 09:40:18,577 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-17 09:40:18,577 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-17 09:40:18,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Waiting until timeout for monitored process [2023-02-17 09:40:18,603 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-17 09:40:18,605 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2023-02-17 09:40:18,605 INFO L444 ModelExtractionUtils]: 3 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2023-02-17 09:40:18,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-17 09:40:18,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 09:40:18,606 INFO L229 MonitoredProcess]: Starting monitored process 56 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) [2023-02-17 09:40:18,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Waiting until timeout for monitored process [2023-02-17 09:40:18,609 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-17 09:40:18,609 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-17 09:40:18,609 INFO L513 LassoAnalysis]: Proved termination. [2023-02-17 09:40:18,609 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0#1) = 1*ULTIMATE.start_main_~z~0#1 Supporting invariants [] [2023-02-17 09:40:18,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (55)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:18,613 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-17 09:40:18,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 09:40:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:18,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 09:40:18,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:18,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (56)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 09:40:18,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 09:40:18,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 09:40:18,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (49)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 09:40:18,641 INFO L141 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2023-02-17 09:40:18,641 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11 Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-02-17 09:40:18,652 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 19 states and 26 transitions. cyclomatic complexity: 11. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) Result 36 states and 54 transitions. Complement of second has 6 states. [2023-02-17 09:40:18,652 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 [2023-02-17 09:40:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2023-02-17 09:40:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-02-17 09:40:18,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2023-02-17 09:40:18,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:18,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 13 letters. Loop has 4 letters. [2023-02-17 09:40:18,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:18,661 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2023-02-17 09:40:18,661 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-17 09:40:18,661 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2023-02-17 09:40:18,662 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-17 09:40:18,662 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2023-02-17 09:40:18,662 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-17 09:40:18,662 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-17 09:40:18,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-17 09:40:18,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 09:40:18,662 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 09:40:18,662 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 09:40:18,662 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-17 09:40:18,662 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-02-17 09:40:18,662 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-17 09:40:18,662 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-17 09:40:18,662 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-17 09:40:18,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.02 09:40:18 BoogieIcfgContainer [2023-02-17 09:40:18,667 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-17 09:40:18,667 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 09:40:18,667 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 09:40:18,668 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 09:40:18,668 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 09:40:14" (3/4) ... [2023-02-17 09:40:18,669 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-17 09:40:18,669 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 09:40:18,670 INFO L158 Benchmark]: Toolchain (without parser) took 4331.31ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 93.0MB in the beginning and 121.2MB in the end (delta: -28.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:40:18,670 INFO L158 Benchmark]: CDTParser took 4.11ms. Allocated memory is still 109.1MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:40:18,670 INFO L158 Benchmark]: CACSL2BoogieTranslator took 117.54ms. Allocated memory is still 132.1MB. Free memory was 92.8MB in the beginning and 83.9MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 09:40:18,670 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.41ms. Allocated memory is still 132.1MB. Free memory was 83.7MB in the beginning and 82.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:40:18,670 INFO L158 Benchmark]: Boogie Preprocessor took 10.23ms. Allocated memory is still 132.1MB. Free memory was 82.4MB in the beginning and 81.5MB in the end (delta: 936.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 09:40:18,671 INFO L158 Benchmark]: RCFGBuilder took 139.98ms. Allocated memory is still 132.1MB. Free memory was 81.1MB in the beginning and 72.9MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 09:40:18,671 INFO L158 Benchmark]: BuchiAutomizer took 4035.84ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 72.7MB in the beginning and 121.2MB in the end (delta: -48.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:40:18,671 INFO L158 Benchmark]: Witness Printer took 2.04ms. Allocated memory is still 159.4MB. Free memory is still 121.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 09:40:18,672 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.11ms. Allocated memory is still 109.1MB. Free memory is still 83.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 117.54ms. Allocated memory is still 132.1MB. Free memory was 92.8MB in the beginning and 83.9MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.41ms. Allocated memory is still 132.1MB. Free memory was 83.7MB in the beginning and 82.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.23ms. Allocated memory is still 132.1MB. Free memory was 82.4MB in the beginning and 81.5MB in the end (delta: 936.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 139.98ms. Allocated memory is still 132.1MB. Free memory was 81.1MB in the beginning and 72.9MB in the end (delta: 8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 4035.84ms. Allocated memory was 132.1MB in the beginning and 159.4MB in the end (delta: 27.3MB). Free memory was 72.7MB in the beginning and 121.2MB in the end (delta: -48.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.04ms. Allocated memory is still 159.4MB. Free memory is still 121.2MB. 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 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 5 locations. One deterministic module has affine ranking function -1 * y + z and consists of 4 locations. One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 5 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 5 locations. One nondeterministic module has affine ranking function -1 * y + z and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 10 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.0s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 3.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 19 StatesRemovedByMinimization, 5 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 [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 91 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 141 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 78 mSDtfsCounter, 141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax165 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq163 hnf93 smp100 dnf100 smp100 tf108 neg98 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 33ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.3s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-17 09:40:18,681 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-02-17 09:40:18,886 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