./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 a31fd051 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-?-a31fd05 [2023-02-15 14:13:51,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 14:13:51,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 14:13:51,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 14:13:51,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 14:13:51,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 14:13:51,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 14:13:51,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 14:13:51,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 14:13:51,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 14:13:51,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 14:13:51,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 14:13:51,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 14:13:51,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 14:13:51,486 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 14:13:51,487 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 14:13:51,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 14:13:51,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 14:13:51,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 14:13:51,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 14:13:51,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 14:13:51,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 14:13:51,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 14:13:51,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 14:13:51,502 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 14:13:51,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 14:13:51,503 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 14:13:51,504 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 14:13:51,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 14:13:51,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 14:13:51,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 14:13:51,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 14:13:51,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 14:13:51,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 14:13:51,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 14:13:51,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 14:13:51,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 14:13:51,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 14:13:51,510 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 14:13:51,512 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 14:13:51,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 14:13:51,513 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-02-15 14:13:51,536 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 14:13:51,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 14:13:51,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 14:13:51,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 14:13:51,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 14:13:51,538 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 14:13:51,538 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 14:13:51,538 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-02-15 14:13:51,538 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-02-15 14:13:51,539 INFO L138 SettingsManager]: * Use old map elimination=false [2023-02-15 14:13:51,539 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2023-02-15 14:13:51,539 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2023-02-15 14:13:51,539 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-02-15 14:13:51,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 14:13:51,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 14:13:51,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 14:13:51,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 14:13:51,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-02-15 14:13:51,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-02-15 14:13:51,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-02-15 14:13:51,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 14:13:51,541 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-02-15 14:13:51,541 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 14:13:51,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-02-15 14:13:51,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 14:13:51,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 14:13:51,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 14:13:51,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 14:13:51,543 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-02-15 14:13:51,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33be026e9ca846df0a8faa91fc9c2bbf64ee20dbba0f4f48a9cd42fbefb372d5 [2023-02-15 14:13:51,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 14:13:51,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 14:13:51,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 14:13:51,731 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 14:13:51,732 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 14:13:51,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-15 14:13:52,815 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 14:13:52,970 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 14:13:52,971 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-15 14:13:52,976 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23b003638/fa1a3823ece94dbd84e2996eb661ed41/FLAG5b2e0c89c [2023-02-15 14:13:53,002 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23b003638/fa1a3823ece94dbd84e2996eb661ed41 [2023-02-15 14:13:53,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 14:13:53,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 14:13:53,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 14:13:53,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 14:13:53,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 14:13:53,009 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8a5ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53, skipping insertion in model container [2023-02-15 14:13:53,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 14:13:53,028 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 14:13:53,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:13:53,120 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 14:13:53,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 14:13:53,136 INFO L208 MainTranslator]: Completed translation [2023-02-15 14:13:53,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53 WrapperNode [2023-02-15 14:13:53,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 14:13:53,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 14:13:53,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 14:13:53,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 14:13:53,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,157 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2023-02-15 14:13:53,157 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 14:13:53,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 14:13:53,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 14:13:53,158 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 14:13:53,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,170 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 14:13:53,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 14:13:53,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 14:13:53,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 14:13:53,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (1/1) ... [2023-02-15 14:13:53,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:53,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:53,194 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) [2023-02-15 14:13:53,224 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 [2023-02-15 14:13:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 14:13:53,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 14:13:53,282 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 14:13:53,284 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 14:13:53,339 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 14:13:53,343 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 14:13:53,343 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 14:13:53,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:13:53 BoogieIcfgContainer [2023-02-15 14:13:53,344 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 14:13:53,345 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-02-15 14:13:53,345 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2023-02-15 14:13:53,348 INFO L275 PluginConnector]: BuchiAutomizer initialized [2023-02-15 14:13:53,348 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:13:53,348 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 15.02 02:13:53" (1/3) ... [2023-02-15 14:13:53,349 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e888349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:13:53, skipping insertion in model container [2023-02-15 14:13:53,349 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:13:53,349 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 02:13:53" (2/3) ... [2023-02-15 14:13:53,350 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e888349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 15.02 02:13:53, skipping insertion in model container [2023-02-15 14:13:53,350 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-02-15 14:13:53,350 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:13:53" (3/3) ... [2023-02-15 14:13:53,351 INFO L332 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2023-02-15 14:13:53,382 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-02-15 14:13:53,382 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-02-15 14:13:53,382 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-02-15 14:13:53,382 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-02-15 14:13:53,382 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-02-15 14:13:53,383 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-02-15 14:13:53,383 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-02-15 14:13:53,383 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-02-15 14:13:53,386 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) [2023-02-15 14:13:53,400 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 14:13:53,401 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:53,401 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:53,404 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-15 14:13:53,404 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 14:13:53,404 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-02-15 14:13:53,404 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) [2023-02-15 14:13:53,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 14:13:53,405 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:53,405 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:53,405 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-02-15 14:13:53,405 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 14:13:53,410 INFO L748 eck$LassoCheckResult]: Stem: 6#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 5#L21true assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 8#L22-2true [2023-02-15 14:13:53,410 INFO L750 eck$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 [2023-02-15 14:13:53,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:53,414 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-02-15 14:13:53,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:53,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561013266] [2023-02-15 14:13:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:53,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:53,479 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:53,503 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:53,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:53,505 INFO L85 PathProgramCache]: Analyzing trace with hash 43923, now seen corresponding path program 1 times [2023-02-15 14:13:53,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:53,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437373879] [2023-02-15 14:13:53,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:53,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:53,520 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:53,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:53,525 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:53,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:53,526 INFO L85 PathProgramCache]: Analyzing trace with hash 889513810, now seen corresponding path program 1 times [2023-02-15 14:13:53,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:53,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264486502] [2023-02-15 14:13:53,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:53,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:53,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:53,543 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:53,601 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:53,601 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:53,602 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:53,602 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:53,602 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 14:13:53,602 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:53,602 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:53,602 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:53,602 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2023-02-15 14:13:53,603 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:53,603 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:53,625 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:53,634 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:53,637 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:53,695 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:53,696 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 14:13:53,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:53,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:53,700 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) [2023-02-15 14:13:53,723 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 [2023-02-15 14:13:53,724 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:53,724 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:53,751 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:53,751 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: [] [2023-02-15 14:13:53,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Ended with exit code 0 [2023-02-15 14:13:53,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:53,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:53,759 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) [2023-02-15 14:13:53,761 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 [2023-02-15 14:13:53,763 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:53,763 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:53,778 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:53,779 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: [] [2023-02-15 14:13:53,782 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 [2023-02-15 14:13:53,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:53,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:53,792 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) [2023-02-15 14:13:53,803 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 [2023-02-15 14:13:53,804 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:53,804 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:53,837 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 [2023-02-15 14:13:53,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:53,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:53,838 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) [2023-02-15 14:13:53,840 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 [2023-02-15 14:13:53,842 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:13:53,842 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:53,982 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 14:13:53,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2023-02-15 14:13:53,987 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:53,987 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:53,987 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:53,987 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:53,987 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:13:53,987 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:53,987 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:53,988 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:53,988 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2023-02-15 14:13:53,988 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:53,988 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:53,989 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:53,994 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:54,002 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:54,082 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:54,085 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:13:54,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,087 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) [2023-02-15 14:13:54,113 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 [2023-02-15 14:13:54,116 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 [2023-02-15 14:13:54,123 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:54,123 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:54,123 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:54,123 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:54,130 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:54,132 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:54,153 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:54,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Ended with exit code 0 [2023-02-15 14:13:54,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,193 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) [2023-02-15 14:13:54,198 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 [2023-02-15 14:13:54,201 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 [2023-02-15 14:13:54,208 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:54,208 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:54,209 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:54,209 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:54,225 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:54,225 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:54,243 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:54,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Ended with exit code 0 [2023-02-15 14:13:54,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,248 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) [2023-02-15 14:13:54,258 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 [2023-02-15 14:13:54,259 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 [2023-02-15 14:13:54,266 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:54,266 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:54,266 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:54,266 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:54,267 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:54,269 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:13:54,269 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:54,271 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:54,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Ended with exit code 0 [2023-02-15 14:13:54,310 INFO L490 LassoAnalysis]: Using template '2-nested'. [2023-02-15 14:13:54,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,311 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) [2023-02-15 14:13:54,313 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 [2023-02-15 14:13:54,315 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 [2023-02-15 14:13:54,321 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:54,321 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:54,321 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:54,321 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-15 14:13:54,329 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2023-02-15 14:13:54,329 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2023-02-15 14:13:54,337 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:54,340 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 [2023-02-15 14:13:54,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,343 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) [2023-02-15 14:13:54,349 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 [2023-02-15 14:13:54,349 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 [2023-02-15 14:13:54,355 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:54,356 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:54,356 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:54,356 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-15 14:13:54,373 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2023-02-15 14:13:54,373 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2023-02-15 14:13:54,393 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:54,396 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 [2023-02-15 14:13:54,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,410 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) [2023-02-15 14:13:54,411 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 [2023-02-15 14:13:54,415 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 [2023-02-15 14:13:54,423 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:54,424 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:54,424 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:54,424 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:54,424 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-15 14:13:54,429 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2023-02-15 14:13:54,430 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:54,440 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:13:54,447 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2023-02-15 14:13:54,447 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-02-15 14:13:54,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,450 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) [2023-02-15 14:13:54,461 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 [2023-02-15 14:13:54,461 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:13:54,461 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 14:13:54,462 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:13:54,462 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 [] [2023-02-15 14:13:54,481 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 [2023-02-15 14:13:54,484 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 14:13:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:54,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:54,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:54,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:54,537 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 14:13:54,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:54,700 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 [2023-02-15 14:13:54,702 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) [2023-02-15 14:13:54,736 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. [2023-02-15 14:13:54,738 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 [2023-02-15 14:13:54,741 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) [2023-02-15 14:13:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2023-02-15 14:13:54,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 3 letters. [2023-02-15 14:13:54,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:54,743 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 6 letters. Loop has 3 letters. [2023-02-15 14:13:54,743 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:54,744 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 3 letters. Loop has 6 letters. [2023-02-15 14:13:54,744 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:54,744 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2023-02-15 14:13:54,746 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 14:13:54,749 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 11 states and 15 transitions. [2023-02-15 14:13:54,749 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2023-02-15 14:13:54,749 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2023-02-15 14:13:54,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2023-02-15 14:13:54,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 14:13:54,750 INFO L218 hiAutomatonCegarLoop]: Abstraction has 11 states and 15 transitions. [2023-02-15 14:13:54,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2023-02-15 14:13:54,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-15 14:13:54,766 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) [2023-02-15 14:13:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2023-02-15 14:13:54,767 INFO L240 hiAutomatonCegarLoop]: Abstraction has 11 states and 15 transitions. [2023-02-15 14:13:54,768 INFO L428 stractBuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2023-02-15 14:13:54,768 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2023-02-15 14:13:54,768 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2023-02-15 14:13:54,768 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 14:13:54,768 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:54,768 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:54,769 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2023-02-15 14:13:54,769 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-15 14:13:54,769 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 [2023-02-15 14:13:54,769 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 [2023-02-15 14:13:54,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash 28693995, now seen corresponding path program 1 times [2023-02-15 14:13:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:54,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197383910] [2023-02-15 14:13:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:54,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:54,776 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:54,779 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:54,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:54,780 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 1 times [2023-02-15 14:13:54,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:54,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264853992] [2023-02-15 14:13:54,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:54,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:54,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:54,794 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:54,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:54,794 INFO L85 PathProgramCache]: Analyzing trace with hash 889513868, now seen corresponding path program 2 times [2023-02-15 14:13:54,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:54,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006168058] [2023-02-15 14:13:54,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:54,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:54,800 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:54,804 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:54,819 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:54,819 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:54,819 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:54,819 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:54,819 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 14:13:54,819 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,819 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:54,819 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:54,820 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2023-02-15 14:13:54,820 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:54,820 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:54,821 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:54,823 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:54,826 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:54,828 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:54,869 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:54,869 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 14:13:54,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,871 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) [2023-02-15 14:13:54,873 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 [2023-02-15 14:13:54,875 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:54,875 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:54,895 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:54,896 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: [] [2023-02-15 14:13:54,908 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 [2023-02-15 14:13:54,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,909 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) [2023-02-15 14:13:54,911 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 [2023-02-15 14:13:54,913 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:54,913 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:54,922 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 [2023-02-15 14:13:54,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,924 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) [2023-02-15 14:13:54,926 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 [2023-02-15 14:13:54,927 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:13:54,927 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:54,955 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:54,955 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=1}, {ULTIMATE.start_main_~x~0#1=7}, {ULTIMATE.start_main_~x~0#1=-7}] Lambdas: [1, 2, 1] Nus: [0, 1] [2023-02-15 14:13:54,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:54,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,960 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) [2023-02-15 14:13:54,962 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 [2023-02-15 14:13:54,963 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:54,963 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:54,984 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:54,985 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: [] [2023-02-15 14:13:54,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Ended with exit code 0 [2023-02-15 14:13:54,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:54,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:54,991 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) [2023-02-15 14:13:54,993 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 [2023-02-15 14:13:54,994 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:54,994 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:55,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Ended with exit code 0 [2023-02-15 14:13:55,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,019 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) [2023-02-15 14:13:55,021 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 [2023-02-15 14:13:55,023 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:13:55,023 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:55,164 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 14:13:55,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:55,168 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:55,168 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:55,168 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:55,168 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:55,168 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:13:55,168 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,169 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:55,169 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:55,170 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2023-02-15 14:13:55,170 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:55,170 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:55,171 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:55,173 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:55,176 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:55,178 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:55,212 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:55,213 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:13:55,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,226 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) [2023-02-15 14:13:55,227 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 [2023-02-15 14:13:55,229 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 [2023-02-15 14:13:55,236 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:55,236 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:55,236 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:55,236 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:55,238 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:55,238 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:55,252 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:55,279 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 [2023-02-15 14:13:55,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,281 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) [2023-02-15 14:13:55,311 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 [2023-02-15 14:13:55,318 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:55,319 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:55,319 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:55,319 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:55,319 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:55,320 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:13:55,320 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:55,320 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 [2023-02-15 14:13:55,336 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:55,355 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 [2023-02-15 14:13:55,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,363 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) [2023-02-15 14:13:55,364 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 [2023-02-15 14:13:55,373 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 [2023-02-15 14:13:55,380 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:55,380 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:55,380 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:55,380 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:55,383 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:55,383 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:55,400 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:55,406 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 [2023-02-15 14:13:55,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,413 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) [2023-02-15 14:13:55,415 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 [2023-02-15 14:13:55,484 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 [2023-02-15 14:13:55,491 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:55,491 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:55,491 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:55,491 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:55,491 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:55,492 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:13:55,492 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:55,509 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:13:55,512 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-15 14:13:55,512 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 14:13:55,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,520 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) [2023-02-15 14:13:55,521 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 [2023-02-15 14:13:55,523 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:13:55,523 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 14:13:55,523 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:13:55,524 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 [] [2023-02-15 14:13:55,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:55,528 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 14:13:55,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:55,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:55,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:55,572 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:13:55,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:55,574 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 [2023-02-15 14:13:55,574 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) [2023-02-15 14:13:55,582 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. [2023-02-15 14:13:55,583 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 [2023-02-15 14:13:55,583 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) [2023-02-15 14:13:55,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2023-02-15 14:13:55,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 1 letters. [2023-02-15 14:13:55,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:55,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 6 letters. Loop has 1 letters. [2023-02-15 14:13:55,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:55,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 5 letters. Loop has 2 letters. [2023-02-15 14:13:55,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:55,584 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 18 states and 29 transitions. [2023-02-15 14:13:55,585 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 14:13:55,586 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 18 states to 14 states and 20 transitions. [2023-02-15 14:13:55,586 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2023-02-15 14:13:55,586 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2023-02-15 14:13:55,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2023-02-15 14:13:55,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 14:13:55,586 INFO L218 hiAutomatonCegarLoop]: Abstraction has 14 states and 20 transitions. [2023-02-15 14:13:55,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2023-02-15 14:13:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2023-02-15 14:13:55,587 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) [2023-02-15 14:13:55,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 19 transitions. [2023-02-15 14:13:55,588 INFO L240 hiAutomatonCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-02-15 14:13:55,588 INFO L428 stractBuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2023-02-15 14:13:55,588 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2023-02-15 14:13:55,588 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states and 19 transitions. [2023-02-15 14:13:55,589 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 14:13:55,589 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:55,589 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:55,590 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2023-02-15 14:13:55,590 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 14:13:55,590 INFO L748 eck$LassoCheckResult]: Stem: 165#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 166#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 163#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 164#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 169#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 172#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 161#L24-3 [2023-02-15 14:13:55,590 INFO L750 eck$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 [2023-02-15 14:13:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:55,591 INFO L85 PathProgramCache]: Analyzing trace with hash 889513866, now seen corresponding path program 1 times [2023-02-15 14:13:55,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:55,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746112528] [2023-02-15 14:13:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:55,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:55,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:55,599 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:55,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:55,599 INFO L85 PathProgramCache]: Analyzing trace with hash 56193, now seen corresponding path program 2 times [2023-02-15 14:13:55,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:55,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214361192] [2023-02-15 14:13:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:55,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:55,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:55,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:55,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:55,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:55,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:55,604 INFO L85 PathProgramCache]: Analyzing trace with hash -440607912, now seen corresponding path program 1 times [2023-02-15 14:13:55,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:55,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136257697] [2023-02-15 14:13:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:55,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:55,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:55,613 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:55,628 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:55,628 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:55,628 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:55,628 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:55,629 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 14:13:55,629 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,629 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:55,629 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:55,629 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2023-02-15 14:13:55,629 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:55,629 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:55,630 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:55,632 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:55,637 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:55,666 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:55,666 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 14:13:55,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,667 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) [2023-02-15 14:13:55,675 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 [2023-02-15 14:13:55,676 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:55,676 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:55,688 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:55,688 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: [] [2023-02-15 14:13:55,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:55,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,695 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) [2023-02-15 14:13:55,696 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 [2023-02-15 14:13:55,698 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:55,698 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:55,709 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 [2023-02-15 14:13:55,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,710 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) [2023-02-15 14:13:55,712 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 [2023-02-15 14:13:55,713 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:13:55,713 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:55,837 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 14:13:55,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (26)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:55,841 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:55,841 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:55,841 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:55,841 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:55,841 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:13:55,841 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,841 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:55,841 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:55,841 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2023-02-15 14:13:55,842 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:55,842 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:55,842 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:55,845 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:55,851 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:55,884 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:55,884 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:13:55,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,885 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) [2023-02-15 14:13:55,887 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 [2023-02-15 14:13:55,888 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 [2023-02-15 14:13:55,894 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:55,894 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:55,894 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:55,894 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:55,896 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:55,896 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:55,909 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:55,922 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 [2023-02-15 14:13:55,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,923 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) [2023-02-15 14:13:55,945 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 [2023-02-15 14:13:55,946 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 [2023-02-15 14:13:55,952 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:55,952 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:55,952 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:55,952 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:55,952 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:55,953 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:13:55,953 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:55,968 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:55,971 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 [2023-02-15 14:13:55,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:55,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:55,972 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) [2023-02-15 14:13:55,974 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 [2023-02-15 14:13:55,975 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 [2023-02-15 14:13:55,981 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:55,982 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:55,982 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:55,982 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:55,983 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:55,983 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:55,995 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:56,000 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 [2023-02-15 14:13:56,000 INFO L490 LassoAnalysis]: Using template '2-nested'. [2023-02-15 14:13:56,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,001 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) [2023-02-15 14:13:56,003 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 [2023-02-15 14:13:56,004 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 [2023-02-15 14:13:56,010 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:56,011 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:56,011 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:56,011 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-15 14:13:56,012 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2023-02-15 14:13:56,013 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2023-02-15 14:13:56,025 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:56,027 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 [2023-02-15 14:13:56,032 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 [2023-02-15 14:13:56,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:56,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,034 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) [2023-02-15 14:13:56,049 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 [2023-02-15 14:13:56,050 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 [2023-02-15 14:13:56,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:56,057 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:56,057 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:56,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:56,057 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-15 14:13:56,061 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2023-02-15 14:13:56,061 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:56,073 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:13:56,081 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-15 14:13:56,081 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-02-15 14:13:56,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,096 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) [2023-02-15 14:13:56,097 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 [2023-02-15 14:13:56,099 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:13:56,099 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 14:13:56,099 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:13:56,099 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 [] [2023-02-15 14:13:56,104 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 [2023-02-15 14:13:56,105 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 14:13:56,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:56,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:56,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:56,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:56,136 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 14:13:56,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:56,240 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 [2023-02-15 14:13:56,240 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) [2023-02-15 14:13:56,256 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. [2023-02-15 14:13:56,257 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 [2023-02-15 14:13:56,257 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) [2023-02-15 14:13:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 16 transitions. [2023-02-15 14:13:56,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 3 letters. [2023-02-15 14:13:56,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:56,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-15 14:13:56,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:56,258 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 16 transitions. Stem has 6 letters. Loop has 6 letters. [2023-02-15 14:13:56,258 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:56,258 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 46 transitions. [2023-02-15 14:13:56,259 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 14:13:56,259 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 23 states and 34 transitions. [2023-02-15 14:13:56,259 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-02-15 14:13:56,259 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-15 14:13:56,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 34 transitions. [2023-02-15 14:13:56,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 14:13:56,260 INFO L218 hiAutomatonCegarLoop]: Abstraction has 23 states and 34 transitions. [2023-02-15 14:13:56,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 34 transitions. [2023-02-15 14:13:56,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19. [2023-02-15 14:13:56,261 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) [2023-02-15 14:13:56,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2023-02-15 14:13:56,261 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 27 transitions. [2023-02-15 14:13:56,261 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2023-02-15 14:13:56,262 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2023-02-15 14:13:56,262 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 27 transitions. [2023-02-15 14:13:56,262 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-02-15 14:13:56,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:56,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:56,262 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-02-15 14:13:56,262 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-02-15 14:13:56,263 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 [2023-02-15 14:13:56,263 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 [2023-02-15 14:13:56,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:56,263 INFO L85 PathProgramCache]: Analyzing trace with hash -442288422, now seen corresponding path program 2 times [2023-02-15 14:13:56,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:56,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957553246] [2023-02-15 14:13:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:56,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:56,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:56,272 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash 56193, now seen corresponding path program 3 times [2023-02-15 14:13:56,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:56,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127195672] [2023-02-15 14:13:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:56,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:56,275 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:56,277 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:56,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:56,277 INFO L85 PathProgramCache]: Analyzing trace with hash 745310728, now seen corresponding path program 3 times [2023-02-15 14:13:56,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:56,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073994298] [2023-02-15 14:13:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:56,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:56,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:56,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 14:13:56,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073994298] [2023-02-15 14:13:56,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073994298] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 14:13:56,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747380438] [2023-02-15 14:13:56,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 14:13:56,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 14:13:56,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,361 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) [2023-02-15 14:13:56,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-02-15 14:13:56,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 14:13:56,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 14:13:56,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 14:13:56,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:56,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:56,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 14:13:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:56,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747380438] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 14:13:56,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 14:13:56,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2023-02-15 14:13:56,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393540641] [2023-02-15 14:13:56,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 14:13:56,473 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:56,473 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:56,474 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:56,474 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:56,474 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 14:13:56,474 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,474 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:56,474 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:56,474 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2023-02-15 14:13:56,474 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:56,474 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:56,474 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:56,476 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:56,482 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:56,507 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:56,507 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 14:13:56,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,508 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) [2023-02-15 14:13:56,510 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 [2023-02-15 14:13:56,512 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:56,512 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:56,523 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:56,523 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: [] [2023-02-15 14:13:56,526 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 [2023-02-15 14:13:56,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,527 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) [2023-02-15 14:13:56,528 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 [2023-02-15 14:13:56,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:56,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:56,539 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 [2023-02-15 14:13:56,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,540 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) [2023-02-15 14:13:56,541 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 [2023-02-15 14:13:56,543 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:13:56,543 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:56,672 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 14:13:56,676 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 [2023-02-15 14:13:56,676 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:56,676 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:56,676 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:56,676 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:56,676 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:13:56,676 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,676 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:56,677 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:56,677 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2023-02-15 14:13:56,677 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:56,677 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:56,677 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:56,690 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:56,692 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:56,722 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:56,722 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:13:56,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,723 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) [2023-02-15 14:13:56,725 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 [2023-02-15 14:13:56,727 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 [2023-02-15 14:13:56,733 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:56,733 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:56,733 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:56,733 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:56,733 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:56,734 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:13:56,734 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:56,737 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:56,739 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 [2023-02-15 14:13:56,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,741 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) [2023-02-15 14:13:56,742 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 [2023-02-15 14:13:56,744 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 [2023-02-15 14:13:56,750 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:56,750 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:56,750 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:56,750 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:56,752 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:56,752 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:56,771 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:56,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (38)] Ended with exit code 0 [2023-02-15 14:13:56,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,800 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) [2023-02-15 14:13:56,809 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 [2023-02-15 14:13:56,814 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 [2023-02-15 14:13:56,820 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:56,820 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:56,820 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:56,820 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:56,822 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:56,822 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:56,836 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:56,852 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 [2023-02-15 14:13:56,852 INFO L490 LassoAnalysis]: Using template '2-nested'. [2023-02-15 14:13:56,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,853 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) [2023-02-15 14:13:56,858 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 [2023-02-15 14:13:56,858 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 [2023-02-15 14:13:56,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:56,865 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:56,865 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:56,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:56,865 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2023-02-15 14:13:56,867 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2023-02-15 14:13:56,867 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:56,869 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:13:56,873 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-15 14:13:56,873 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. [2023-02-15 14:13:56,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:56,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:56,875 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) [2023-02-15 14:13:56,876 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 [2023-02-15 14:13:56,877 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:13:56,877 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 14:13:56,877 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:13:56,877 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 [] [2023-02-15 14:13:56,883 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 [2023-02-15 14:13:56,884 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 14:13:56,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:56,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:56,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:56,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:56,922 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 14:13:56,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:56,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:56,981 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 [2023-02-15 14:13:56,981 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) [2023-02-15 14:13:56,998 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. [2023-02-15 14:13:56,998 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 [2023-02-15 14:13:56,999 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) [2023-02-15 14:13:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 10 transitions. [2023-02-15 14:13:56,999 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 10 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-15 14:13:56,999 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:56,999 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 14:13:57,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:57,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:57,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:57,026 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 14:13:57,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:57,087 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 [2023-02-15 14:13:57,087 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) [2023-02-15 14:13:57,103 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. [2023-02-15 14:13:57,103 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 [2023-02-15 14:13:57,103 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) [2023-02-15 14:13:57,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2023-02-15 14:13:57,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-15 14:13:57,104 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:57,104 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 14:13:57,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:57,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:57,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:57,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:57,129 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 14:13:57,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:57,185 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 [2023-02-15 14:13:57,185 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) [2023-02-15 14:13:57,201 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. [2023-02-15 14:13:57,202 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 [2023-02-15 14:13:57,202 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) [2023-02-15 14:13:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2023-02-15 14:13:57,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 9 letters. Loop has 3 letters. [2023-02-15 14:13:57,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:57,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 12 letters. Loop has 3 letters. [2023-02-15 14:13:57,203 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:57,203 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 9 letters. Loop has 6 letters. [2023-02-15 14:13:57,204 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:57,204 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 53 transitions. [2023-02-15 14:13:57,205 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2023-02-15 14:13:57,205 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 25 states and 35 transitions. [2023-02-15 14:13:57,205 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-02-15 14:13:57,205 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2023-02-15 14:13:57,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 35 transitions. [2023-02-15 14:13:57,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 14:13:57,206 INFO L218 hiAutomatonCegarLoop]: Abstraction has 25 states and 35 transitions. [2023-02-15 14:13:57,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states and 35 transitions. [2023-02-15 14:13:57,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2023-02-15 14:13:57,207 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) [2023-02-15 14:13:57,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions. [2023-02-15 14:13:57,207 INFO L240 hiAutomatonCegarLoop]: Abstraction has 16 states and 22 transitions. [2023-02-15 14:13:57,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 14:13:57,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 14:13:57,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-15 14:13:57,210 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) [2023-02-15 14:13:57,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 14:13:57,284 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2023-02-15 14:13:57,284 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 29 transitions. [2023-02-15 14:13:57,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 14:13:57,285 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 22 states and 29 transitions. [2023-02-15 14:13:57,285 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2023-02-15 14:13:57,285 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-15 14:13:57,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 29 transitions. [2023-02-15 14:13:57,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 14:13:57,285 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 29 transitions. [2023-02-15 14:13:57,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 29 transitions. [2023-02-15 14:13:57,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2023-02-15 14:13:57,286 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) [2023-02-15 14:13:57,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 27 transitions. [2023-02-15 14:13:57,287 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 27 transitions. [2023-02-15 14:13:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 14:13:57,289 INFO L428 stractBuchiCegarLoop]: Abstraction has 20 states and 27 transitions. [2023-02-15 14:13:57,290 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2023-02-15 14:13:57,290 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 27 transitions. [2023-02-15 14:13:57,290 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2023-02-15 14:13:57,290 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:57,290 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:57,290 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-02-15 14:13:57,290 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1] [2023-02-15 14:13:57,290 INFO L748 eck$LassoCheckResult]: Stem: 649#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true; 650#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet1#1, main_#t~nondet2#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1;main_~y~0#1 := main_#t~nondet1#1;havoc main_#t~nondet1#1;main_~z~0#1 := main_#t~nondet2#1;havoc main_#t~nondet2#1; 647#L21 assume ((main_~x~0#1 <= 10000 && main_~x~0#1 >= -10000) && main_~y~0#1 <= 10000) && main_~z~0#1 <= 10000; 648#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 643#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 644#L24-2 assume !(main_~y~0#1 < main_~z~0#1); 657#L24-3 main_~y~0#1 := main_~x~0#1 + main_~y~0#1; 656#L22-2 assume !!(main_~y~0#1 >= 1);main_~x~0#1 := main_~x~0#1 - 1; 662#L24-2 assume !!(main_~y~0#1 < main_~z~0#1);main_~x~0#1 := 1 + main_~x~0#1;main_~z~0#1 := main_~z~0#1 - 1; 659#L24-2 [2023-02-15 14:13:57,290 INFO L750 eck$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 [2023-02-15 14:13:57,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:57,291 INFO L85 PathProgramCache]: Analyzing trace with hash -440607910, now seen corresponding path program 4 times [2023-02-15 14:13:57,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:57,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132640075] [2023-02-15 14:13:57,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:57,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:57,295 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:57,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:57,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:57,298 INFO L85 PathProgramCache]: Analyzing trace with hash 54, now seen corresponding path program 2 times [2023-02-15 14:13:57,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:57,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378905372] [2023-02-15 14:13:57,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:57,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:57,300 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:57,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash -773943299, now seen corresponding path program 5 times [2023-02-15 14:13:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:57,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044244586] [2023-02-15 14:13:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:57,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:57,335 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:57,350 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:57,362 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:57,362 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:57,362 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:57,362 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:57,362 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 14:13:57,362 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:57,362 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:57,363 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:57,363 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2023-02-15 14:13:57,363 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:57,363 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:57,363 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:57,365 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:57,367 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:57,371 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:57,401 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:57,401 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 14:13:57,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:57,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:57,428 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) [2023-02-15 14:13:57,429 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 [2023-02-15 14:13:57,431 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:57,431 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:57,451 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:57,451 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: [] [2023-02-15 14:13:57,494 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 [2023-02-15 14:13:57,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:57,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:57,496 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) [2023-02-15 14:13:57,515 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 [2023-02-15 14:13:57,515 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:57,515 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:57,536 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:57,537 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: [] [2023-02-15 14:13:57,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (43)] Ended with exit code 0 [2023-02-15 14:13:57,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:57,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:57,566 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) [2023-02-15 14:13:57,568 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 [2023-02-15 14:13:57,569 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:57,569 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:57,606 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 [2023-02-15 14:13:57,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:57,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:57,613 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) [2023-02-15 14:13:57,628 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 [2023-02-15 14:13:57,629 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:13:57,629 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:57,770 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 14:13:57,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (45)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:57,774 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:57,774 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:57,774 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:57,774 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:57,774 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:13:57,774 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:57,774 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:57,774 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:57,774 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2023-02-15 14:13:57,774 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:57,774 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:57,775 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:57,777 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:57,779 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:57,782 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:57,818 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:57,818 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:13:57,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:57,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:57,829 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) [2023-02-15 14:13:57,831 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 [2023-02-15 14:13:57,832 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 [2023-02-15 14:13:57,837 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:57,837 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:57,837 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:57,837 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:57,839 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:57,839 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:57,854 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:57,857 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (46)] Ended with exit code 0 [2023-02-15 14:13:57,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:57,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:57,866 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) [2023-02-15 14:13:57,868 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 [2023-02-15 14:13:57,869 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 [2023-02-15 14:13:57,875 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:57,875 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:57,875 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:57,875 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:57,876 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:57,876 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:57,892 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:57,894 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 [2023-02-15 14:13:57,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:57,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:57,896 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) [2023-02-15 14:13:57,897 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 [2023-02-15 14:13:57,899 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 [2023-02-15 14:13:57,906 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:57,906 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:57,906 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:57,906 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:57,906 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:57,907 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:13:57,907 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:57,909 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:13:57,913 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2023-02-15 14:13:57,913 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 14:13:57,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:57,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:57,924 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) [2023-02-15 14:13:57,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Ended with exit code 0 [2023-02-15 14:13:57,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (41)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:57,939 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 [2023-02-15 14:13:57,939 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:13:57,940 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 14:13:57,940 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:13:57,940 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 [] [2023-02-15 14:13:57,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (48)] Ended with exit code 0 [2023-02-15 14:13:57,943 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 14:13:57,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:57,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:57,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:57,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:57,980 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:13:57,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:57,981 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 [2023-02-15 14:13:57,981 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) [2023-02-15 14:13:57,988 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. [2023-02-15 14:13:57,989 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 [2023-02-15 14:13:57,989 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) [2023-02-15 14:13:57,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-15 14:13:57,989 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-15 14:13:57,989 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:57,989 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 14:13:57,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:58,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:58,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:58,011 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:13:58,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:58,012 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 [2023-02-15 14:13:58,012 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) [2023-02-15 14:13:58,017 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. [2023-02-15 14:13:58,017 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 [2023-02-15 14:13:58,017 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) [2023-02-15 14:13:58,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2023-02-15 14:13:58,018 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-15 14:13:58,018 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:58,018 INFO L681 stractBuchiCegarLoop]: Bad chosen interpolant automaton: word not accepted [2023-02-15 14:13:58,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:58,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:58,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:58,042 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 14:13:58,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:58,042 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 [2023-02-15 14:13:58,043 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) [2023-02-15 14:13:58,048 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. [2023-02-15 14:13:58,049 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 [2023-02-15 14:13:58,049 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) [2023-02-15 14:13:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 10 transitions. [2023-02-15 14:13:58,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 1 letters. [2023-02-15 14:13:58,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:58,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 10 letters. Loop has 1 letters. [2023-02-15 14:13:58,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:58,050 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 10 transitions. Stem has 9 letters. Loop has 2 letters. [2023-02-15 14:13:58,050 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:58,050 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 35 transitions. [2023-02-15 14:13:58,051 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-15 14:13:58,051 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 22 states and 30 transitions. [2023-02-15 14:13:58,051 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2023-02-15 14:13:58,051 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2023-02-15 14:13:58,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 30 transitions. [2023-02-15 14:13:58,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2023-02-15 14:13:58,052 INFO L218 hiAutomatonCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-02-15 14:13:58,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 30 transitions. [2023-02-15 14:13:58,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2023-02-15 14:13:58,053 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) [2023-02-15 14:13:58,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2023-02-15 14:13:58,053 INFO L240 hiAutomatonCegarLoop]: Abstraction has 19 states and 26 transitions. [2023-02-15 14:13:58,053 INFO L428 stractBuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2023-02-15 14:13:58,053 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2023-02-15 14:13:58,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 19 states and 26 transitions. [2023-02-15 14:13:58,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2023-02-15 14:13:58,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-02-15 14:13:58,054 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-02-15 14:13:58,054 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2023-02-15 14:13:58,054 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2023-02-15 14:13:58,054 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 [2023-02-15 14:13:58,055 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 [2023-02-15 14:13:58,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:58,055 INFO L85 PathProgramCache]: Analyzing trace with hash -440607910, now seen corresponding path program 6 times [2023-02-15 14:13:58,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:58,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665288568] [2023-02-15 14:13:58,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:58,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:58,059 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:58,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:58,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:58,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1575536, now seen corresponding path program 1 times [2023-02-15 14:13:58,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:58,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620189946] [2023-02-15 14:13:58,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:58,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:58,065 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:58,067 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:58,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:58,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1160408759, now seen corresponding path program 7 times [2023-02-15 14:13:58,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 14:13:58,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547383474] [2023-02-15 14:13:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 14:13:58,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 14:13:58,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:58,072 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-15 14:13:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-15 14:13:58,075 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-15 14:13:58,097 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:58,097 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:58,098 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:58,098 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:58,098 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2023-02-15 14:13:58,098 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:58,098 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:58,098 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:58,098 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2023-02-15 14:13:58,098 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:58,098 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:58,099 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:58,100 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:58,102 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:58,165 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:58,166 INFO L404 LassoAnalysis]: Checking for nontermination... [2023-02-15 14:13:58,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:58,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:58,191 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) [2023-02-15 14:13:58,202 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 [2023-02-15 14:13:58,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:58,203 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:58,216 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:58,216 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: [] [2023-02-15 14:13:58,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (50)] Ended with exit code 0 [2023-02-15 14:13:58,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:58,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:58,220 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) [2023-02-15 14:13:58,223 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 [2023-02-15 14:13:58,225 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:58,225 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:58,257 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2023-02-15 14:13:58,257 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: [] [2023-02-15 14:13:58,273 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 [2023-02-15 14:13:58,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:58,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:58,275 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) [2023-02-15 14:13:58,277 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 [2023-02-15 14:13:58,278 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2023-02-15 14:13:58,278 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:58,292 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 [2023-02-15 14:13:58,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:58,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:58,294 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) [2023-02-15 14:13:58,296 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 [2023-02-15 14:13:58,297 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2023-02-15 14:13:58,297 INFO L160 nArgumentSynthesizer]: Using integer mode. [2023-02-15 14:13:58,429 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2023-02-15 14:13:58,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (53)] Forceful destruction successful, exit code 0 [2023-02-15 14:13:58,433 INFO L210 LassoAnalysis]: Preferences: [2023-02-15 14:13:58,433 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2023-02-15 14:13:58,433 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2023-02-15 14:13:58,433 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2023-02-15 14:13:58,433 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2023-02-15 14:13:58,433 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:58,434 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2023-02-15 14:13:58,434 INFO L132 ssoRankerPreferences]: Path of dumped script: [2023-02-15 14:13:58,434 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2023-02-15 14:13:58,434 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2023-02-15 14:13:58,434 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2023-02-15 14:13:58,434 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:58,436 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:58,455 INFO L117 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2023-02-15 14:13:58,491 INFO L294 LassoAnalysis]: Preprocessing complete. [2023-02-15 14:13:58,491 INFO L490 LassoAnalysis]: Using template 'affine'. [2023-02-15 14:13:58,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:58,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:58,493 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) [2023-02-15 14:13:58,521 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 [2023-02-15 14:13:58,522 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 [2023-02-15 14:13:58,528 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:58,528 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:58,528 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:58,528 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:58,529 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2023-02-15 14:13:58,529 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2023-02-15 14:13:58,531 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2023-02-15 14:13:58,534 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 [2023-02-15 14:13:58,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:58,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:58,535 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) [2023-02-15 14:13:58,537 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 [2023-02-15 14:13:58,538 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 [2023-02-15 14:13:58,544 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2023-02-15 14:13:58,544 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2023-02-15 14:13:58,545 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2023-02-15 14:13:58,545 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2023-02-15 14:13:58,545 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2023-02-15 14:13:58,545 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2023-02-15 14:13:58,545 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2023-02-15 14:13:58,565 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2023-02-15 14:13:58,575 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2023-02-15 14:13:58,575 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2023-02-15 14:13:58,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-02-15 14:13:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 14:13:58,585 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) [2023-02-15 14:13:58,589 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2023-02-15 14:13:58,589 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2023-02-15 14:13:58,589 INFO L513 LassoAnalysis]: Proved termination. [2023-02-15 14:13:58,589 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 [] [2023-02-15 14:13:58,592 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 [2023-02-15 14:13:58,601 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 [2023-02-15 14:13:58,602 INFO L156 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2023-02-15 14:13:58,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 14:13:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:58,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-15 14:13:58,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:58,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 14:13:58,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 14:13:58,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 14:13:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 14:13:58,635 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 [2023-02-15 14:13:58,635 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) [2023-02-15 14:13:58,650 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. [2023-02-15 14:13:58,651 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 [2023-02-15 14:13:58,652 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) [2023-02-15 14:13:58,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2023-02-15 14:13:58,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 4 letters. [2023-02-15 14:13:58,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:58,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 13 letters. Loop has 4 letters. [2023-02-15 14:13:58,652 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:58,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2023-02-15 14:13:58,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2023-02-15 14:13:58,653 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 54 transitions. [2023-02-15 14:13:58,654 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 14:13:58,654 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 0 states and 0 transitions. [2023-02-15 14:13:58,654 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2023-02-15 14:13:58,654 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2023-02-15 14:13:58,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2023-02-15 14:13:58,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-15 14:13:58,654 INFO L218 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 14:13:58,654 INFO L240 hiAutomatonCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 14:13:58,654 INFO L428 stractBuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 14:13:58,654 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2023-02-15 14:13:58,655 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2023-02-15 14:13:58,655 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2023-02-15 14:13:58,655 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2023-02-15 14:13:58,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 15.02 02:13:58 BoogieIcfgContainer [2023-02-15 14:13:58,660 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-02-15 14:13:58,660 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 14:13:58,660 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 14:13:58,661 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 14:13:58,661 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 02:13:53" (3/4) ... [2023-02-15 14:13:58,663 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 14:13:58,663 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 14:13:58,663 INFO L158 Benchmark]: Toolchain (without parser) took 5657.35ms. Allocated memory was 163.6MB in the beginning and 234.9MB in the end (delta: 71.3MB). Free memory was 117.0MB in the beginning and 152.4MB in the end (delta: -35.4MB). Peak memory consumption was 36.9MB. Max. memory is 16.1GB. [2023-02-15 14:13:58,663 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 163.6MB. Free memory was 108.8MB in the beginning and 108.6MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:13:58,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 131.04ms. Allocated memory is still 163.6MB. Free memory was 117.0MB in the beginning and 107.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 14:13:58,664 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.19ms. Allocated memory is still 163.6MB. Free memory was 107.6MB in the beginning and 105.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 14:13:58,664 INFO L158 Benchmark]: Boogie Preprocessor took 15.38ms. Allocated memory is still 163.6MB. Free memory was 105.9MB in the beginning and 104.9MB in the end (delta: 926.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 14:13:58,664 INFO L158 Benchmark]: RCFGBuilder took 170.73ms. Allocated memory is still 163.6MB. Free memory was 104.9MB in the beginning and 96.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 14:13:58,664 INFO L158 Benchmark]: BuchiAutomizer took 5314.87ms. Allocated memory was 163.6MB in the beginning and 234.9MB in the end (delta: 71.3MB). Free memory was 96.0MB in the beginning and 153.5MB in the end (delta: -57.5MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-02-15 14:13:58,665 INFO L158 Benchmark]: Witness Printer took 2.38ms. Allocated memory is still 234.9MB. Free memory is still 152.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 14:13:58,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 163.6MB. Free memory was 108.8MB in the beginning and 108.6MB in the end (delta: 140.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 131.04ms. Allocated memory is still 163.6MB. Free memory was 117.0MB in the beginning and 107.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.19ms. Allocated memory is still 163.6MB. Free memory was 107.6MB in the beginning and 105.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.38ms. Allocated memory is still 163.6MB. Free memory was 105.9MB in the beginning and 104.9MB in the end (delta: 926.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 170.73ms. Allocated memory is still 163.6MB. Free memory was 104.9MB in the beginning and 96.5MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 5314.87ms. Allocated memory was 163.6MB in the beginning and 234.9MB in the end (delta: 71.3MB). Free memory was 96.0MB in the beginning and 153.5MB in the end (delta: -57.5MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Witness Printer took 2.38ms. Allocated memory is still 234.9MB. Free memory is still 152.4MB. 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 x + y) 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 x + y) 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 5.2s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 4.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.9s. 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: inital18 mio100 ax166 hnf100 lsp54 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq162 hnf100 smp100 dnf93 smp100 tf108 neg97 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 26ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 1 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.4s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2023-02-15 14:13:58,685 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 [2023-02-15 14:13:58,873 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 [2023-02-15 14:13:59,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-02-15 14:13:59,279 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